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Gav Wood 2015-02-20 21:59:21 +01:00
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636
AST.cpp
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/*
This file is part of cpp-ethereum.
cpp-ethereum is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
cpp-ethereum is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @author Christian <c@ethdev.com>
* @date 2014
* Solidity abstract syntax tree.
*/
#include <algorithm>
#include <libsolidity/Utils.h>
#include <libsolidity/AST.h>
#include <libsolidity/ASTVisitor.h>
#include <libsolidity/Exceptions.h>
#include <libsolidity/AST_accept.h>
#include <libdevcrypto/SHA3.h>
using namespace std;
namespace dev
{
namespace solidity
{
TypeError ASTNode::createTypeError(string const& _description) const
{
return TypeError() << errinfo_sourceLocation(getLocation()) << errinfo_comment(_description);
}
TypePointer ContractDefinition::getType(ContractDefinition const* _currentContract) const
{
return make_shared<TypeType>(make_shared<ContractType>(*this), _currentContract);
}
void ContractDefinition::checkTypeRequirements()
{
for (ASTPointer<InheritanceSpecifier> const& baseSpecifier: getBaseContracts())
baseSpecifier->checkTypeRequirements();
checkIllegalOverrides();
FunctionDefinition const* constructor = getConstructor();
if (constructor && !constructor->getReturnParameters().empty())
BOOST_THROW_EXCEPTION(constructor->getReturnParameterList()->createTypeError(
"Non-empty \"returns\" directive for constructor."));
FunctionDefinition const* fallbackFunction = nullptr;
for (ASTPointer<FunctionDefinition> const& function: getDefinedFunctions())
if (function->getName().empty())
{
if (fallbackFunction)
BOOST_THROW_EXCEPTION(DeclarationError() << errinfo_comment("Only one fallback function is allowed."));
else
{
fallbackFunction = function.get();
if (!fallbackFunction->getParameters().empty())
BOOST_THROW_EXCEPTION(fallbackFunction->getParameterList().createTypeError("Fallback function cannot take parameters."));
}
}
for (ASTPointer<ModifierDefinition> const& modifier: getFunctionModifiers())
modifier->checkTypeRequirements();
for (ASTPointer<FunctionDefinition> const& function: getDefinedFunctions())
function->checkTypeRequirements();
// check for hash collisions in function signatures
set<FixedHash<4>> hashes;
for (auto const& it: getInterfaceFunctionList())
{
FixedHash<4> const& hash = it.first;
if (hashes.count(hash))
BOOST_THROW_EXCEPTION(createTypeError(
std::string("Function signature hash collision for ") +
it.second->getCanonicalSignature()));
hashes.insert(hash);
}
}
map<FixedHash<4>, FunctionTypePointer> ContractDefinition::getInterfaceFunctions() const
{
auto exportedFunctionList = getInterfaceFunctionList();
map<FixedHash<4>, FunctionTypePointer> exportedFunctions;
for (auto const& it: exportedFunctionList)
exportedFunctions.insert(it);
solAssert(exportedFunctionList.size() == exportedFunctions.size(),
"Hash collision at Function Definition Hash calculation");
return exportedFunctions;
}
FunctionDefinition const* ContractDefinition::getConstructor() const
{
for (ASTPointer<FunctionDefinition> const& f: m_definedFunctions)
if (f->isConstructor())
return f.get();
return nullptr;
}
FunctionDefinition const* ContractDefinition::getFallbackFunction() const
{
for (ContractDefinition const* contract: getLinearizedBaseContracts())
for (ASTPointer<FunctionDefinition> const& f: contract->getDefinedFunctions())
if (f->getName().empty())
return f.get();
return nullptr;
}
void ContractDefinition::checkIllegalOverrides() const
{
// TODO unify this at a later point. for this we need to put the constness and the access specifier
// into the types
map<string, FunctionDefinition const*> functions;
map<string, ModifierDefinition const*> modifiers;
// We search from derived to base, so the stored item causes the error.
for (ContractDefinition const* contract: getLinearizedBaseContracts())
{
for (ASTPointer<FunctionDefinition> const& function: contract->getDefinedFunctions())
{
if (function->isConstructor())
continue; // constructors can neither be overridden nor override anything
string const& name = function->getName();
if (modifiers.count(name))
BOOST_THROW_EXCEPTION(modifiers[name]->createTypeError("Override changes function to modifier."));
FunctionDefinition const*& override = functions[name];
if (!override)
override = function.get();
else if (override->getVisibility() != function->getVisibility() ||
override->isDeclaredConst() != function->isDeclaredConst() ||
FunctionType(*override) != FunctionType(*function))
BOOST_THROW_EXCEPTION(override->createTypeError("Override changes extended function signature."));
}
for (ASTPointer<ModifierDefinition> const& modifier: contract->getFunctionModifiers())
{
string const& name = modifier->getName();
if (functions.count(name))
BOOST_THROW_EXCEPTION(functions[name]->createTypeError("Override changes modifier to function."));
ModifierDefinition const*& override = modifiers[name];
if (!override)
override = modifier.get();
else if (ModifierType(*override) != ModifierType(*modifier))
BOOST_THROW_EXCEPTION(override->createTypeError("Override changes modifier signature."));
}
}
}
std::vector<ASTPointer<EventDefinition>> const& ContractDefinition::getInterfaceEvents() const
{
if (!m_interfaceEvents)
{
set<string> eventsSeen;
m_interfaceEvents.reset(new std::vector<ASTPointer<EventDefinition>>());
for (ContractDefinition const* contract: getLinearizedBaseContracts())
for (ASTPointer<EventDefinition> const& e: contract->getEvents())
if (eventsSeen.count(e->getName()) == 0)
{
eventsSeen.insert(e->getName());
m_interfaceEvents->push_back(e);
}
}
return *m_interfaceEvents;
}
vector<pair<FixedHash<4>, FunctionTypePointer>> const& ContractDefinition::getInterfaceFunctionList() const
{
if (!m_interfaceFunctionList)
{
set<string> functionsSeen;
m_interfaceFunctionList.reset(new vector<pair<FixedHash<4>, FunctionTypePointer>>());
for (ContractDefinition const* contract: getLinearizedBaseContracts())
{
for (ASTPointer<FunctionDefinition> const& f: contract->getDefinedFunctions())
if (f->isPublic() && !f->isConstructor() && !f->getName().empty() && functionsSeen.count(f->getName()) == 0)
{
functionsSeen.insert(f->getName());
FixedHash<4> hash(dev::sha3(f->getCanonicalSignature()));
m_interfaceFunctionList->push_back(make_pair(hash, make_shared<FunctionType>(*f, false)));
}
for (ASTPointer<VariableDeclaration> const& v: contract->getStateVariables())
if (v->isPublic() && functionsSeen.count(v->getName()) == 0)
{
FunctionType ftype(*v);
functionsSeen.insert(v->getName());
FixedHash<4> hash(dev::sha3(ftype.getCanonicalSignature(v->getName())));
m_interfaceFunctionList->push_back(make_pair(hash, make_shared<FunctionType>(*v)));
}
}
}
return *m_interfaceFunctionList;
}
TypePointer EnumValue::getType(ContractDefinition const*) const
{
EnumDefinition const* parentDef = dynamic_cast<EnumDefinition const*>(getScope());
solAssert(parentDef, "Enclosing Scope of EnumValue was not set");
return make_shared<EnumType>(*parentDef);
}
void InheritanceSpecifier::checkTypeRequirements()
{
m_baseName->checkTypeRequirements();
for (ASTPointer<Expression> const& argument: m_arguments)
argument->checkTypeRequirements();
ContractDefinition const* base = dynamic_cast<ContractDefinition const*>(m_baseName->getReferencedDeclaration());
solAssert(base, "Base contract not available.");
TypePointers parameterTypes = ContractType(*base).getConstructorType()->getParameterTypes();
if (parameterTypes.size() != m_arguments.size())
BOOST_THROW_EXCEPTION(createTypeError("Wrong argument count for constructor call."));
for (size_t i = 0; i < m_arguments.size(); ++i)
if (!m_arguments[i]->getType()->isImplicitlyConvertibleTo(*parameterTypes[i]))
BOOST_THROW_EXCEPTION(createTypeError("Invalid type for argument in constructer call."));
}
TypePointer StructDefinition::getType(ContractDefinition const*) const
{
return make_shared<TypeType>(make_shared<StructType>(*this));
}
void StructDefinition::checkMemberTypes() const
{
for (ASTPointer<VariableDeclaration> const& member: getMembers())
if (!member->getType()->canBeStored())
BOOST_THROW_EXCEPTION(member->createTypeError("Type cannot be used in struct."));
}
void StructDefinition::checkRecursion() const
{
set<StructDefinition const*> definitionsSeen;
vector<StructDefinition const*> queue = {this};
while (!queue.empty())
{
StructDefinition const* def = queue.back();
queue.pop_back();
if (definitionsSeen.count(def))
BOOST_THROW_EXCEPTION(ParserError() << errinfo_sourceLocation(def->getLocation())
<< errinfo_comment("Recursive struct definition."));
definitionsSeen.insert(def);
for (ASTPointer<VariableDeclaration> const& member: def->getMembers())
if (member->getType()->getCategory() == Type::Category::Struct)
{
UserDefinedTypeName const& typeName = dynamic_cast<UserDefinedTypeName const&>(*member->getTypeName());
queue.push_back(&dynamic_cast<StructDefinition const&>(*typeName.getReferencedDeclaration()));
}
}
}
TypePointer EnumDefinition::getType(ContractDefinition const*) const
{
return make_shared<TypeType>(make_shared<EnumType>(*this));
}
TypePointer FunctionDefinition::getType(ContractDefinition const*) const
{
return make_shared<FunctionType>(*this);
}
void FunctionDefinition::checkTypeRequirements()
{
for (ASTPointer<VariableDeclaration> const& var: getParameters() + getReturnParameters())
if (!var->getType()->canLiveOutsideStorage())
BOOST_THROW_EXCEPTION(var->createTypeError("Type is required to live outside storage."));
for (ASTPointer<ModifierInvocation> const& modifier: m_functionModifiers)
modifier->checkTypeRequirements();
m_body->checkTypeRequirements();
}
string FunctionDefinition::getCanonicalSignature() const
{
return FunctionType(*this).getCanonicalSignature(getName());
}
bool VariableDeclaration::isLValue() const
{
// External function parameters are Read-Only
return !isExternalFunctionParameter();
}
bool VariableDeclaration::isExternalFunctionParameter() const
{
auto const* function = dynamic_cast<FunctionDefinition const*>(getScope());
if (!function || function->getVisibility() != Declaration::Visibility::External)
return false;
for (auto const& variable: function->getParameters())
if (variable.get() == this)
return true;
return false;
}
TypePointer ModifierDefinition::getType(ContractDefinition const*) const
{
return make_shared<ModifierType>(*this);
}
void ModifierDefinition::checkTypeRequirements()
{
m_body->checkTypeRequirements();
}
void ModifierInvocation::checkTypeRequirements()
{
m_modifierName->checkTypeRequirements();
for (ASTPointer<Expression> const& argument: m_arguments)
argument->checkTypeRequirements();
ModifierDefinition const* modifier = dynamic_cast<ModifierDefinition const*>(m_modifierName->getReferencedDeclaration());
solAssert(modifier, "Function modifier not found.");
vector<ASTPointer<VariableDeclaration>> const& parameters = modifier->getParameters();
if (parameters.size() != m_arguments.size())
BOOST_THROW_EXCEPTION(createTypeError("Wrong argument count for modifier invocation."));
for (size_t i = 0; i < m_arguments.size(); ++i)
if (!m_arguments[i]->getType()->isImplicitlyConvertibleTo(*parameters[i]->getType()))
BOOST_THROW_EXCEPTION(createTypeError("Invalid type for argument in modifier invocation."));
}
void EventDefinition::checkTypeRequirements()
{
int numIndexed = 0;
for (ASTPointer<VariableDeclaration> const& var: getParameters())
{
if (var->isIndexed())
numIndexed++;
if (!var->getType()->canLiveOutsideStorage())
BOOST_THROW_EXCEPTION(var->createTypeError("Type is required to live outside storage."));
}
if (numIndexed > 3)
BOOST_THROW_EXCEPTION(createTypeError("More than 3 indexed arguments for event."));
}
void Block::checkTypeRequirements()
{
for (shared_ptr<Statement> const& statement: m_statements)
statement->checkTypeRequirements();
}
void IfStatement::checkTypeRequirements()
{
m_condition->expectType(BoolType());
m_trueBody->checkTypeRequirements();
if (m_falseBody)
m_falseBody->checkTypeRequirements();
}
void WhileStatement::checkTypeRequirements()
{
m_condition->expectType(BoolType());
m_body->checkTypeRequirements();
}
void ForStatement::checkTypeRequirements()
{
if (m_initExpression)
m_initExpression->checkTypeRequirements();
if (m_condExpression)
m_condExpression->expectType(BoolType());
if (m_loopExpression)
m_loopExpression->checkTypeRequirements();
m_body->checkTypeRequirements();
}
void Return::checkTypeRequirements()
{
if (!m_expression)
return;
if (!m_returnParameters)
BOOST_THROW_EXCEPTION(createTypeError("Return arguments not allowed."));
if (m_returnParameters->getParameters().size() != 1)
BOOST_THROW_EXCEPTION(createTypeError("Different number of arguments in return statement "
"than in returns declaration."));
// this could later be changed such that the paramaters type is an anonymous struct type,
// but for now, we only allow one return parameter
m_expression->expectType(*m_returnParameters->getParameters().front()->getType());
}
void VariableDefinition::checkTypeRequirements()
{
// Variables can be declared without type (with "var"), in which case the first assignment
// sets the type.
// Note that assignments before the first declaration are legal because of the special scoping
// rules inherited from JavaScript.
if (m_value)
{
if (m_variable->getType())
m_value->expectType(*m_variable->getType());
else
{
// no type declared and no previous assignment, infer the type
m_value->checkTypeRequirements();
TypePointer type = m_value->getType();
if (type->getCategory() == Type::Category::IntegerConstant)
{
auto intType = dynamic_pointer_cast<IntegerConstantType const>(type)->getIntegerType();
if (!intType)
BOOST_THROW_EXCEPTION(m_value->createTypeError("Invalid integer constant " + type->toString()));
type = intType;
}
else if (type->getCategory() == Type::Category::Void)
BOOST_THROW_EXCEPTION(m_variable->createTypeError("var cannot be void type"));
m_variable->setType(type);
}
}
}
void Assignment::checkTypeRequirements()
{
m_leftHandSide->checkTypeRequirements();
m_leftHandSide->requireLValue();
if (m_leftHandSide->getType()->getCategory() == Type::Category::Mapping)
BOOST_THROW_EXCEPTION(createTypeError("Mappings cannot be assigned to."));
m_type = m_leftHandSide->getType();
if (m_assigmentOperator == Token::Assign)
m_rightHandSide->expectType(*m_type);
else
{
// compound assignment
m_rightHandSide->checkTypeRequirements();
TypePointer resultType = m_type->binaryOperatorResult(Token::AssignmentToBinaryOp(m_assigmentOperator),
m_rightHandSide->getType());
if (!resultType || *resultType != *m_type)
BOOST_THROW_EXCEPTION(createTypeError("Operator " + string(Token::toString(m_assigmentOperator)) +
" not compatible with types " +
m_type->toString() + " and " +
m_rightHandSide->getType()->toString()));
}
}
void ExpressionStatement::checkTypeRequirements()
{
m_expression->checkTypeRequirements();
if (m_expression->getType()->getCategory() == Type::Category::IntegerConstant)
if (!dynamic_pointer_cast<IntegerConstantType const>(m_expression->getType())->getIntegerType())
BOOST_THROW_EXCEPTION(m_expression->createTypeError("Invalid integer constant."));
}
void Expression::expectType(Type const& _expectedType)
{
checkTypeRequirements();
Type const& type = *getType();
if (!type.isImplicitlyConvertibleTo(_expectedType))
BOOST_THROW_EXCEPTION(createTypeError("Type " + type.toString() +
" not implicitly convertible to expected type "
+ _expectedType.toString() + "."));
}
void Expression::requireLValue()
{
if (!isLValue())
BOOST_THROW_EXCEPTION(createTypeError("Expression has to be an lvalue."));
m_lvalueRequested = true;
}
void UnaryOperation::checkTypeRequirements()
{
// Inc, Dec, Add, Sub, Not, BitNot, Delete
m_subExpression->checkTypeRequirements();
if (m_operator == Token::Value::Inc || m_operator == Token::Value::Dec || m_operator == Token::Value::Delete)
m_subExpression->requireLValue();
m_type = m_subExpression->getType()->unaryOperatorResult(m_operator);
if (!m_type)
BOOST_THROW_EXCEPTION(createTypeError("Unary operator not compatible with type."));
}
void BinaryOperation::checkTypeRequirements()
{
m_left->checkTypeRequirements();
m_right->checkTypeRequirements();
m_commonType = m_left->getType()->binaryOperatorResult(m_operator, m_right->getType());
if (!m_commonType)
BOOST_THROW_EXCEPTION(createTypeError("Operator " + string(Token::toString(m_operator)) +
" not compatible with types " +
m_left->getType()->toString() + " and " +
m_right->getType()->toString()));
m_type = Token::isCompareOp(m_operator) ? make_shared<BoolType>() : m_commonType;
}
void FunctionCall::checkTypeRequirements()
{
m_expression->checkTypeRequirements();
for (ASTPointer<Expression> const& argument: m_arguments)
argument->checkTypeRequirements();
Type const* expressionType = m_expression->getType().get();
if (isTypeConversion())
{
TypeType const& type = dynamic_cast<TypeType const&>(*expressionType);
//@todo for structs, we have to check the number of arguments to be equal to the
// number of non-mapping members
if (m_arguments.size() != 1)
BOOST_THROW_EXCEPTION(createTypeError("More than one argument for explicit type conversion."));
if (!m_names.empty())
BOOST_THROW_EXCEPTION(createTypeError("Type conversion cannot allow named arguments."));
if (!m_arguments.front()->getType()->isExplicitlyConvertibleTo(*type.getActualType()))
BOOST_THROW_EXCEPTION(createTypeError("Explicit type conversion not allowed."));
m_type = type.getActualType();
}
else if (FunctionType const* functionType = dynamic_cast<FunctionType const*>(expressionType))
{
//@todo would be nice to create a struct type from the arguments
// and then ask if that is implicitly convertible to the struct represented by the
// function parameters
TypePointers const& parameterTypes = functionType->getParameterTypes();
if (!functionType->takesArbitraryParameters() && parameterTypes.size() != m_arguments.size())
BOOST_THROW_EXCEPTION(createTypeError("Wrong argument count for function call."));
if (m_names.empty())
{
for (size_t i = 0; i < m_arguments.size(); ++i)
if (!functionType->takesArbitraryParameters() &&
!m_arguments[i]->getType()->isImplicitlyConvertibleTo(*parameterTypes[i]))
BOOST_THROW_EXCEPTION(m_arguments[i]->createTypeError("Invalid type for argument in function call."));
}
else
{
if (functionType->takesArbitraryParameters())
BOOST_THROW_EXCEPTION(createTypeError("Named arguments cannnot be used for functions "
"that take arbitrary parameters."));
auto const& parameterNames = functionType->getParameterNames();
if (parameterNames.size() != m_names.size())
BOOST_THROW_EXCEPTION(createTypeError("Some argument names are missing."));
// check duplicate names
for (size_t i = 0; i < m_names.size(); i++)
for (size_t j = i + 1; j < m_names.size(); j++)
if (*m_names[i] == *m_names[j])
BOOST_THROW_EXCEPTION(m_arguments[i]->createTypeError("Duplicate named argument."));
for (size_t i = 0; i < m_names.size(); i++) {
bool found = false;
for (size_t j = 0; j < parameterNames.size(); j++) {
if (parameterNames[j] == *m_names[i]) {
// check type convertible
if (!m_arguments[i]->getType()->isImplicitlyConvertibleTo(*parameterTypes[j]))
BOOST_THROW_EXCEPTION(createTypeError("Invalid type for argument in function call."));
found = true;
break;
}
}
if (!found)
BOOST_THROW_EXCEPTION(createTypeError("Named argument does not match function declaration."));
}
}
// @todo actually the return type should be an anonymous struct,
// but we change it to the type of the first return value until we have structs
if (functionType->getReturnParameterTypes().empty())
m_type = make_shared<VoidType>();
else
m_type = functionType->getReturnParameterTypes().front();
}
else
BOOST_THROW_EXCEPTION(createTypeError("Type is not callable."));
}
bool FunctionCall::isTypeConversion() const
{
return m_expression->getType()->getCategory() == Type::Category::TypeType;
}
void NewExpression::checkTypeRequirements()
{
m_contractName->checkTypeRequirements();
m_contract = dynamic_cast<ContractDefinition const*>(m_contractName->getReferencedDeclaration());
if (!m_contract)
BOOST_THROW_EXCEPTION(createTypeError("Identifier is not a contract."));
shared_ptr<ContractType const> contractType = make_shared<ContractType>(*m_contract);
TypePointers const& parameterTypes = contractType->getConstructorType()->getParameterTypes();
m_type = make_shared<FunctionType>(parameterTypes, TypePointers{contractType},
FunctionType::Location::Creation);
}
void MemberAccess::checkTypeRequirements()
{
m_expression->checkTypeRequirements();
Type const& type = *m_expression->getType();
m_type = type.getMemberType(*m_memberName);
if (!m_type)
BOOST_THROW_EXCEPTION(createTypeError("Member \"" + *m_memberName + "\" not found or not "
"visible in " + type.toString()));
m_isLValue = (type.getCategory() == Type::Category::Struct);
}
void IndexAccess::checkTypeRequirements()
{
m_base->checkTypeRequirements();
if (m_base->getType()->getCategory() != Type::Category::Mapping)
BOOST_THROW_EXCEPTION(m_base->createTypeError("Indexed expression has to be a mapping (is " +
m_base->getType()->toString() + ")"));
MappingType const& type = dynamic_cast<MappingType const&>(*m_base->getType());
m_index->expectType(*type.getKeyType());
m_type = type.getValueType();
m_isLValue = true;
}
void Identifier::checkTypeRequirements()
{
solAssert(m_referencedDeclaration, "Identifier not resolved.");
m_isLValue = m_referencedDeclaration->isLValue();
m_type = m_referencedDeclaration->getType(m_currentContract);
if (!m_type)
BOOST_THROW_EXCEPTION(createTypeError("Declaration referenced before type could be determined."));
}
void ElementaryTypeNameExpression::checkTypeRequirements()
{
m_type = make_shared<TypeType>(Type::fromElementaryTypeName(m_typeToken));
}
void Literal::checkTypeRequirements()
{
m_type = Type::forLiteral(*this);
if (!m_type)
BOOST_THROW_EXCEPTION(createTypeError("Invalid literal value."));
}
}
}

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AST.h
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ASTForward.h
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/*
This file is part of cpp-ethereum.
cpp-ethereum is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
cpp-ethereum is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @author Christian <c@ethdev.com>
* @date 2014
* Forward-declarations of AST classes.
*/
#pragma once
#include <string>
#include <memory>
#include <vector>
// Forward-declare all AST node types
namespace dev
{
namespace solidity
{
class ASTNode;
class SourceUnit;
class ImportDirective;
class Declaration;
class ContractDefinition;
class InheritanceSpecifier;
class StructDefinition;
class EnumDefinition;
class EnumValue;
class ParameterList;
class FunctionDefinition;
class VariableDeclaration;
class ModifierDefinition;
class ModifierInvocation;
class EventDefinition;
class MagicVariableDeclaration;
class TypeName;
class ElementaryTypeName;
class UserDefinedTypeName;
class Mapping;
class Statement;
class Block;
class PlaceholderStatement;
class IfStatement;
class BreakableStatement;
class WhileStatement;
class ForStatement;
class Continue;
class Break;
class Return;
class VariableDefinition;
class ExpressionStatement;
class Expression;
class Assignment;
class UnaryOperation;
class BinaryOperation;
class FunctionCall;
class NewExpression;
class MemberAccess;
class IndexAccess;
class PrimaryExpression;
class Identifier;
class ElementaryTypeNameExpression;
class Literal;
class VariableScope;
// Used as pointers to AST nodes, to be replaced by more clever pointers, e.g. pointers which do
// not do reference counting but point to a special memory area that is completely released
// explicitly.
template <class T>
using ASTPointer = std::shared_ptr<T>;
using ASTString = std::string;
}
}

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/*
This file is part of cpp-ethereum.
cpp-ethereum is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
cpp-ethereum is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @author Lefteris <lefteris@ethdev.com>
* @date 2015
* Converts the AST into json format
*/
#include <libsolidity/ASTJsonConverter.h>
#include <libsolidity/AST.h>
using namespace std;
namespace dev
{
namespace solidity
{
void ASTJsonConverter::addKeyValue(Json::Value& _obj, string const& _key, string const& _val)
{
// special handling for booleans
if (_key == "const" || _key == "public" || _key == "local" ||
_key == "lvalue" || _key == "local_lvalue" || _key == "prefix")
_obj[_key] = (_val == "1") ? true : false;
else
// else simply add it as a string
_obj[_key] = _val;
}
void ASTJsonConverter::addJsonNode(string const& _nodeName,
initializer_list<pair<string const, string const>> _list,
bool _hasChildren = false)
{
Json::Value node;
node["name"] = _nodeName;
if (_list.size() != 0)
{
Json::Value attrs;
for (auto& e: _list)
addKeyValue(attrs, e.first, e.second);
node["attributes"] = attrs;
}
m_jsonNodePtrs.top()->append(node);
if (_hasChildren)
{
Json::Value& addedNode = (*m_jsonNodePtrs.top())[m_jsonNodePtrs.top()->size() - 1];
Json::Value children(Json::arrayValue);
addedNode["children"] = children;
m_jsonNodePtrs.push(&addedNode["children"]);
}
}
ASTJsonConverter::ASTJsonConverter(ASTNode const& _ast): m_ast(&_ast)
{
Json::Value children(Json::arrayValue);
m_astJson["name"] = "root";
m_astJson["children"] = children;
m_jsonNodePtrs.push(&m_astJson["children"]);
}
void ASTJsonConverter::print(ostream& _stream)
{
m_ast->accept(*this);
_stream << m_astJson;
}
bool ASTJsonConverter::visit(ImportDirective const& _node)
{
addJsonNode("Import", { make_pair("file", _node.getIdentifier())});
return true;
}
bool ASTJsonConverter::visit(ContractDefinition const& _node)
{
addJsonNode("Contract", { make_pair("name", _node.getName()) }, true);
return true;
}
bool ASTJsonConverter::visit(StructDefinition const& _node)
{
addJsonNode("Struct", { make_pair("name", _node.getName()) }, true);
return true;
}
bool ASTJsonConverter::visit(ParameterList const&)
{
addJsonNode("ParameterList", {}, true);
return true;
}
bool ASTJsonConverter::visit(FunctionDefinition const& _node)
{
addJsonNode("Function",
{ make_pair("name", _node.getName()),
make_pair("public", boost::lexical_cast<std::string>(_node.isPublic())),
make_pair("const", boost::lexical_cast<std::string>(_node.isDeclaredConst())) },
true);
return true;
}
bool ASTJsonConverter::visit(VariableDeclaration const& _node)
{
addJsonNode("VariableDeclaration", { make_pair("name", _node.getName()) }, true);
return true;
}
bool ASTJsonConverter::visit(TypeName const&)
{
return true;
}
bool ASTJsonConverter::visit(ElementaryTypeName const& _node)
{
addJsonNode("ElementaryTypeName", { make_pair("name", Token::toString(_node.getTypeName())) });
return true;
}
bool ASTJsonConverter::visit(UserDefinedTypeName const& _node)
{
addJsonNode("UserDefinedTypeName", { make_pair("name", _node.getName()) });
return true;
}
bool ASTJsonConverter::visit(Mapping const&)
{
addJsonNode("Mapping", {}, true);
return true;
}
bool ASTJsonConverter::visit(Statement const&)
{
addJsonNode("Statement", {}, true);
return true;
}
bool ASTJsonConverter::visit(Block const&)
{
addJsonNode("Block", {}, true);
return true;
}
bool ASTJsonConverter::visit(IfStatement const&)
{
addJsonNode("IfStatement", {}, true);
return true;
}
bool ASTJsonConverter::visit(BreakableStatement const&)
{
return true;
}
bool ASTJsonConverter::visit(WhileStatement const&)
{
addJsonNode("WhileStatement", {}, true);
return true;
}
bool ASTJsonConverter::visit(ForStatement const&)
{
addJsonNode("ForStatement", {}, true);
return true;
}
bool ASTJsonConverter::visit(Continue const&)
{
addJsonNode("Continue", {});
return true;
}
bool ASTJsonConverter::visit(Break const&)
{
addJsonNode("Break", {});
return true;
}
bool ASTJsonConverter::visit(Return const&)
{
addJsonNode("Return", {}, true);;
return true;
}
bool ASTJsonConverter::visit(VariableDefinition const&)
{
addJsonNode("VariableDefinition", {}, true);
return true;
}
bool ASTJsonConverter::visit(ExpressionStatement const&)
{
addJsonNode("ExpressionStatement", {}, true);
return true;
}
bool ASTJsonConverter::visit(Expression const& _node)
{
addJsonNode(
"Expression",
{ make_pair("type", getType(_node)),
make_pair("lvalue", boost::lexical_cast<std::string>(_node.isLValue())) },
true
);
return true;
}
bool ASTJsonConverter::visit(Assignment const& _node)
{
addJsonNode("Assignment",
{ make_pair("operator", Token::toString(_node.getAssignmentOperator())),
make_pair("type", getType(_node)) },
true);
return true;
}
bool ASTJsonConverter::visit(UnaryOperation const& _node)
{
addJsonNode("UnaryOperation",
{ make_pair("prefix", boost::lexical_cast<std::string>(_node.isPrefixOperation())),
make_pair("operator", Token::toString(_node.getOperator())),
make_pair("type", getType(_node)) },
true);
return true;
}
bool ASTJsonConverter::visit(BinaryOperation const& _node)
{
addJsonNode("BinaryOperation",
{ make_pair("operator", Token::toString(_node.getOperator())),
make_pair("type", getType(_node))},
true);
return true;
}
bool ASTJsonConverter::visit(FunctionCall const& _node)
{
addJsonNode("FunctionCall",
{ make_pair("type_conversion", boost::lexical_cast<std::string>(_node.isTypeConversion())),
make_pair("type", getType(_node)) },
true);
return true;
}
bool ASTJsonConverter::visit(NewExpression const& _node)
{
addJsonNode("NewExpression", { make_pair("type", getType(_node)) }, true);
return true;
}
bool ASTJsonConverter::visit(MemberAccess const& _node)
{
addJsonNode("MemberAccess",
{ make_pair("member_name", _node.getMemberName()),
make_pair("type", getType(_node)) },
true);
return true;
}
bool ASTJsonConverter::visit(IndexAccess const& _node)
{
addJsonNode("IndexAccess", { make_pair("type", getType(_node)) }, true);
return true;
}
bool ASTJsonConverter::visit(PrimaryExpression const&)
{
return true;
}
bool ASTJsonConverter::visit(Identifier const& _node)
{
addJsonNode("Identifier",
{ make_pair("value", _node.getName()), make_pair("type", getType(_node)) });
return true;
}
bool ASTJsonConverter::visit(ElementaryTypeNameExpression const& _node)
{
addJsonNode("ElementaryTypenameExpression",
{ make_pair("value", Token::toString(_node.getTypeToken())), make_pair("type", getType(_node)) });
return true;
}
bool ASTJsonConverter::visit(Literal const& _node)
{
char const* tokenString = Token::toString(_node.getToken());
addJsonNode("Literal",
{ make_pair("string", (tokenString) ? tokenString : "null"),
make_pair("value", _node.getValue()),
make_pair("type", getType(_node)) });
return true;
}
void ASTJsonConverter::endVisit(ImportDirective const&)
{
}
void ASTJsonConverter::endVisit(ContractDefinition const&)
{
goUp();
}
void ASTJsonConverter::endVisit(StructDefinition const&)
{
goUp();
}
void ASTJsonConverter::endVisit(ParameterList const&)
{
goUp();
}
void ASTJsonConverter::endVisit(FunctionDefinition const&)
{
goUp();
}
void ASTJsonConverter::endVisit(VariableDeclaration const&)
{
}
void ASTJsonConverter::endVisit(TypeName const&)
{
}
void ASTJsonConverter::endVisit(ElementaryTypeName const&)
{
}
void ASTJsonConverter::endVisit(UserDefinedTypeName const&)
{
}
void ASTJsonConverter::endVisit(Mapping const&)
{
}
void ASTJsonConverter::endVisit(Statement const&)
{
goUp();
}
void ASTJsonConverter::endVisit(Block const&)
{
goUp();
}
void ASTJsonConverter::endVisit(IfStatement const&)
{
goUp();
}
void ASTJsonConverter::endVisit(BreakableStatement const&)
{
}
void ASTJsonConverter::endVisit(WhileStatement const&)
{
goUp();
}
void ASTJsonConverter::endVisit(ForStatement const&)
{
goUp();
}
void ASTJsonConverter::endVisit(Continue const&)
{
}
void ASTJsonConverter::endVisit(Break const&)
{
}
void ASTJsonConverter::endVisit(Return const&)
{
goUp();
}
void ASTJsonConverter::endVisit(VariableDefinition const&)
{
goUp();
}
void ASTJsonConverter::endVisit(ExpressionStatement const&)
{
goUp();
}
void ASTJsonConverter::endVisit(Expression const&)
{
goUp();
}
void ASTJsonConverter::endVisit(Assignment const&)
{
goUp();
}
void ASTJsonConverter::endVisit(UnaryOperation const&)
{
goUp();
}
void ASTJsonConverter::endVisit(BinaryOperation const&)
{
goUp();
}
void ASTJsonConverter::endVisit(FunctionCall const&)
{
goUp();
}
void ASTJsonConverter::endVisit(NewExpression const&)
{
goUp();
}
void ASTJsonConverter::endVisit(MemberAccess const&)
{
goUp();
}
void ASTJsonConverter::endVisit(IndexAccess const&)
{
goUp();
}
void ASTJsonConverter::endVisit(PrimaryExpression const&)
{
}
void ASTJsonConverter::endVisit(Identifier const&)
{
}
void ASTJsonConverter::endVisit(ElementaryTypeNameExpression const&)
{
}
void ASTJsonConverter::endVisit(Literal const&)
{
}
string ASTJsonConverter::getType(Expression const& _expression)
{
return (_expression.getType()) ? _expression.getType()->toString() : "Unknown";
}
}
}

135
ASTJsonConverter.h
View File

@ -1,135 +0,0 @@
/*
This file is part of cpp-ethereum.
cpp-ethereum is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
cpp-ethereum is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @author Lefteris <lefteris@ethdev.com>
* @date 2015
* Converts the AST into json format
*/
#pragma once
#include <ostream>
#include <stack>
#include <libsolidity/ASTVisitor.h>
#include <libsolidity/Exceptions.h>
#include <libsolidity/Utils.h>
#include <json/json.h>
namespace dev
{
namespace solidity
{
/**
* Converter of the AST into JSON format
*/
class ASTJsonConverter: public ASTConstVisitor
{
public:
/// Create a converter to JSON for the given abstract syntax tree.
ASTJsonConverter(ASTNode const& _ast);
/// Output the json representation of the AST to _stream.
void print(std::ostream& _stream);
bool visit(ImportDirective const& _node) override;
bool visit(ContractDefinition const& _node) override;
bool visit(StructDefinition const& _node) override;
bool visit(ParameterList const& _node) override;
bool visit(FunctionDefinition const& _node) override;
bool visit(VariableDeclaration const& _node) override;
bool visit(TypeName const& _node) override;
bool visit(ElementaryTypeName const& _node) override;
bool visit(UserDefinedTypeName const& _node) override;
bool visit(Mapping const& _node) override;
bool visit(Statement const& _node) override;
bool visit(Block const& _node) override;
bool visit(IfStatement const& _node) override;
bool visit(BreakableStatement const& _node) override;
bool visit(WhileStatement const& _node) override;
bool visit(ForStatement const& _node) override;
bool visit(Continue const& _node) override;
bool visit(Break const& _node) override;
bool visit(Return const& _node) override;
bool visit(VariableDefinition const& _node) override;
bool visit(ExpressionStatement const& _node) override;
bool visit(Expression const& _node) override;
bool visit(Assignment const& _node) override;
bool visit(UnaryOperation const& _node) override;
bool visit(BinaryOperation const& _node) override;
bool visit(FunctionCall const& _node) override;
bool visit(NewExpression const& _node) override;
bool visit(MemberAccess const& _node) override;
bool visit(IndexAccess const& _node) override;
bool visit(PrimaryExpression const& _node) override;
bool visit(Identifier const& _node) override;
bool visit(ElementaryTypeNameExpression const& _node) override;
bool visit(Literal const& _node) override;
void endVisit(ImportDirective const&) override;
void endVisit(ContractDefinition const&) override;
void endVisit(StructDefinition const&) override;
void endVisit(ParameterList const&) override;
void endVisit(FunctionDefinition const&) override;
void endVisit(VariableDeclaration const&) override;
void endVisit(TypeName const&) override;
void endVisit(ElementaryTypeName const&) override;
void endVisit(UserDefinedTypeName const&) override;
void endVisit(Mapping const&) override;
void endVisit(Statement const&) override;
void endVisit(Block const&) override;
void endVisit(IfStatement const&) override;
void endVisit(BreakableStatement const&) override;
void endVisit(WhileStatement const&) override;
void endVisit(ForStatement const&) override;
void endVisit(Continue const&) override;
void endVisit(Break const&) override;
void endVisit(Return const&) override;
void endVisit(VariableDefinition const&) override;
void endVisit(ExpressionStatement const&) override;
void endVisit(Expression const&) override;
void endVisit(Assignment const&) override;
void endVisit(UnaryOperation const&) override;
void endVisit(BinaryOperation const&) override;
void endVisit(FunctionCall const&) override;
void endVisit(NewExpression const&) override;
void endVisit(MemberAccess const&) override;
void endVisit(IndexAccess const&) override;
void endVisit(PrimaryExpression const&) override;
void endVisit(Identifier const&) override;
void endVisit(ElementaryTypeNameExpression const&) override;
void endVisit(Literal const&) override;
private:
void addKeyValue(Json::Value& _obj, std::string const& _key, std::string const& _val);
void addJsonNode(std::string const& _nodeName,
std::initializer_list<std::pair<std::string const, std::string const>> _list,
bool _hasChildren);
std::string getType(Expression const& _expression);
inline void goUp()
{
solAssert(!m_jsonNodePtrs.empty(), "Uneven json nodes stack. Internal error.");
m_jsonNodePtrs.pop();
};
Json::Value m_astJson;
std::stack<Json::Value*> m_jsonNodePtrs;
std::string m_source;
ASTNode const* m_ast;
};
}
}

571
ASTPrinter.cpp
View File

@ -1,571 +0,0 @@
/*
This file is part of cpp-ethereum.
cpp-ethereum is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
cpp-ethereum is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @author Christian <c@ethdev.com>
* @date 2014
* Pretty-printer for the abstract syntax tree (the "pretty" is arguable), used for debugging.
*/
#include <libsolidity/ASTPrinter.h>
#include <libsolidity/AST.h>
using namespace std;
namespace dev
{
namespace solidity
{
ASTPrinter::ASTPrinter(ASTNode const& _ast, string const& _source):
m_indentation(0), m_source(_source), m_ast(&_ast)
{
}
void ASTPrinter::print(ostream& _stream)
{
m_ostream = &_stream;
m_ast->accept(*this);
m_ostream = nullptr;
}
bool ASTPrinter::visit(ImportDirective const& _node)
{
writeLine("ImportDirective \"" + _node.getIdentifier() + "\"");
printSourcePart(_node);
return goDeeper();
}
bool ASTPrinter::visit(ContractDefinition const& _node)
{
writeLine("ContractDefinition \"" + _node.getName() + "\"");
printSourcePart(_node);
return goDeeper();
}
bool ASTPrinter::visit(InheritanceSpecifier const& _node)
{
writeLine("InheritanceSpecifier \"" + _node.getName()->getName() + "\"");
printSourcePart(_node);
return goDeeper();
}
bool ASTPrinter::visit(StructDefinition const& _node)
{
writeLine("StructDefinition \"" + _node.getName() + "\"");
printSourcePart(_node);
return goDeeper();
}
bool ASTPrinter::visit(EnumDefinition const& _node)
{
writeLine("EnumDefinition \"" + _node.getName() + "\"");
return goDeeper();
}
bool ASTPrinter::visit(EnumValue const& _node)
{
writeLine("EnumValue \"" + _node.getName() + "\"");
return goDeeper();
}
bool ASTPrinter::visit(ParameterList const& _node)
{
writeLine("ParameterList");
printSourcePart(_node);
return goDeeper();
}
bool ASTPrinter::visit(FunctionDefinition const& _node)
{
writeLine("FunctionDefinition \"" + _node.getName() + "\"" +
(_node.isPublic() ? " - public" : "") +
(_node.isDeclaredConst() ? " - const" : ""));
printSourcePart(_node);
return goDeeper();
}
bool ASTPrinter::visit(VariableDeclaration const& _node)
{
writeLine("VariableDeclaration \"" + _node.getName() + "\"");
printSourcePart(_node);
return goDeeper();
}
bool ASTPrinter::visit(ModifierDefinition const& _node)
{
writeLine("ModifierDefinition \"" + _node.getName() + "\"");
printSourcePart(_node);
return goDeeper();
}
bool ASTPrinter::visit(ModifierInvocation const& _node)
{
writeLine("ModifierInvocation \"" + _node.getName()->getName() + "\"");
printSourcePart(_node);
return goDeeper();
}
bool ASTPrinter::visit(EventDefinition const& _node)
{
writeLine("EventDefinition \"" + _node.getName() + "\"");
printSourcePart(_node);
return goDeeper();
}
bool ASTPrinter::visit(TypeName const& _node)
{
writeLine("TypeName");
printSourcePart(_node);
return goDeeper();
}
bool ASTPrinter::visit(ElementaryTypeName const& _node)
{
writeLine(string("ElementaryTypeName ") + Token::toString(_node.getTypeName()));
printSourcePart(_node);
return goDeeper();
}
bool ASTPrinter::visit(UserDefinedTypeName const& _node)
{
writeLine("UserDefinedTypeName \"" + _node.getName() + "\"");
printSourcePart(_node);
return goDeeper();
}
bool ASTPrinter::visit(Mapping const& _node)
{
writeLine("Mapping");
printSourcePart(_node);
return goDeeper();
}
bool ASTPrinter::visit(Statement const& _node)
{
writeLine("Statement");
printSourcePart(_node);
return goDeeper();
}
bool ASTPrinter::visit(Block const& _node)
{
writeLine("Block");
printSourcePart(_node);
return goDeeper();
}
bool ASTPrinter::visit(PlaceholderStatement const& _node)
{
writeLine("PlaceholderStatement");
printSourcePart(_node);
return goDeeper();
}
bool ASTPrinter::visit(IfStatement const& _node)
{
writeLine("IfStatement");
printSourcePart(_node);
return goDeeper();
}
bool ASTPrinter::visit(BreakableStatement const& _node)
{
writeLine("BreakableStatement");
printSourcePart(_node);
return goDeeper();
}
bool ASTPrinter::visit(WhileStatement const& _node)
{
writeLine("WhileStatement");
printSourcePart(_node);
return goDeeper();
}
bool ASTPrinter::visit(ForStatement const& _node)
{
writeLine("ForStatement");
printSourcePart(_node);
return goDeeper();
}
bool ASTPrinter::visit(Continue const& _node)
{
writeLine("Continue");
printSourcePart(_node);
return goDeeper();
}
bool ASTPrinter::visit(Break const& _node)
{
writeLine("Break");
printSourcePart(_node);
return goDeeper();
}
bool ASTPrinter::visit(Return const& _node)
{
writeLine("Return");
printSourcePart(_node);
return goDeeper();
}
bool ASTPrinter::visit(VariableDefinition const& _node)
{
writeLine("VariableDefinition");
printSourcePart(_node);
return goDeeper();
}
bool ASTPrinter::visit(ExpressionStatement const& _node)
{
writeLine("ExpressionStatement");
printSourcePart(_node);
return goDeeper();
}
bool ASTPrinter::visit(Expression const& _node)
{
writeLine("Expression");
printType(_node);
printSourcePart(_node);
return goDeeper();
}
bool ASTPrinter::visit(Assignment const& _node)
{
writeLine(string("Assignment using operator ") + Token::toString(_node.getAssignmentOperator()));
printType(_node);
printSourcePart(_node);
return goDeeper();
}
bool ASTPrinter::visit(UnaryOperation const& _node)
{
writeLine(string("UnaryOperation (") + (_node.isPrefixOperation() ? "prefix" : "postfix") +
") " + Token::toString(_node.getOperator()));
printType(_node);
printSourcePart(_node);
return goDeeper();
}
bool ASTPrinter::visit(BinaryOperation const& _node)
{
writeLine(string("BinaryOperation using operator ") + Token::toString(_node.getOperator()));
printType(_node);
printSourcePart(_node);
return goDeeper();
}
bool ASTPrinter::visit(FunctionCall const& _node)
{
writeLine("FunctionCall");
printType(_node);
printSourcePart(_node);
return goDeeper();
}
bool ASTPrinter::visit(NewExpression const& _node)
{
writeLine("NewExpression");
printType(_node);
printSourcePart(_node);
return goDeeper();
}
bool ASTPrinter::visit(MemberAccess const& _node)
{
writeLine("MemberAccess to member " + _node.getMemberName());
printType(_node);
printSourcePart(_node);
return goDeeper();
}
bool ASTPrinter::visit(IndexAccess const& _node)
{
writeLine("IndexAccess");
printType(_node);
printSourcePart(_node);
return goDeeper();
}
bool ASTPrinter::visit(PrimaryExpression const& _node)
{
writeLine("PrimaryExpression");
printType(_node);
printSourcePart(_node);
return goDeeper();
}
bool ASTPrinter::visit(Identifier const& _node)
{
writeLine(string("Identifier ") + _node.getName());
printType(_node);
printSourcePart(_node);
return goDeeper();
}
bool ASTPrinter::visit(ElementaryTypeNameExpression const& _node)
{
writeLine(string("ElementaryTypeNameExpression ") + Token::toString(_node.getTypeToken()));
printType(_node);
printSourcePart(_node);
return goDeeper();
}
bool ASTPrinter::visit(Literal const& _node)
{
char const* tokenString = Token::toString(_node.getToken());
if (!tokenString)
tokenString = "[no token]";
writeLine(string("Literal, token: ") + tokenString + " value: " + _node.getValue());
printType(_node);
printSourcePart(_node);
return goDeeper();
}
void ASTPrinter::endVisit(ImportDirective const&)
{
m_indentation--;
}
void ASTPrinter::endVisit(ContractDefinition const&)
{
m_indentation--;
}
void ASTPrinter::endVisit(InheritanceSpecifier const&)
{
m_indentation--;
}
void ASTPrinter::endVisit(StructDefinition const&)
{
m_indentation--;
}
void ASTPrinter::endVisit(EnumDefinition const&)
{
m_indentation--;
}
void ASTPrinter::endVisit(EnumValue const&)
{
m_indentation--;
}
void ASTPrinter::endVisit(ParameterList const&)
{
m_indentation--;
}
void ASTPrinter::endVisit(FunctionDefinition const&)
{
m_indentation--;
}
void ASTPrinter::endVisit(VariableDeclaration const&)
{
m_indentation--;
}
void ASTPrinter::endVisit(ModifierDefinition const&)
{
m_indentation--;
}
void ASTPrinter::endVisit(ModifierInvocation const&)
{
m_indentation--;
}
void ASTPrinter::endVisit(EventDefinition const&)
{
m_indentation--;
}
void ASTPrinter::endVisit(TypeName const&)
{
m_indentation--;
}
void ASTPrinter::endVisit(ElementaryTypeName const&)
{
m_indentation--;
}
void ASTPrinter::endVisit(UserDefinedTypeName const&)
{
m_indentation--;
}
void ASTPrinter::endVisit(Mapping const&)
{
m_indentation--;
}
void ASTPrinter::endVisit(Statement const&)
{
m_indentation--;
}
void ASTPrinter::endVisit(Block const&)
{
m_indentation--;
}
void ASTPrinter::endVisit(PlaceholderStatement const&)
{
m_indentation--;
}
void ASTPrinter::endVisit(IfStatement const&)
{
m_indentation--;
}
void ASTPrinter::endVisit(BreakableStatement const&)
{
m_indentation--;
}
void ASTPrinter::endVisit(WhileStatement const&)
{
m_indentation--;
}
void ASTPrinter::endVisit(ForStatement const&)
{
m_indentation--;
}
void ASTPrinter::endVisit(Continue const&)
{
m_indentation--;
}
void ASTPrinter::endVisit(Break const&)
{
m_indentation--;
}
void ASTPrinter::endVisit(Return const&)
{
m_indentation--;
}
void ASTPrinter::endVisit(VariableDefinition const&)
{
m_indentation--;
}
void ASTPrinter::endVisit(ExpressionStatement const&)
{
m_indentation--;
}
void ASTPrinter::endVisit(Expression const&)
{
m_indentation--;
}
void ASTPrinter::endVisit(Assignment const&)
{
m_indentation--;
}
void ASTPrinter::endVisit(UnaryOperation const&)
{
m_indentation--;
}
void ASTPrinter::endVisit(BinaryOperation const&)
{
m_indentation--;
}
void ASTPrinter::endVisit(FunctionCall const&)
{
m_indentation--;
}
void ASTPrinter::endVisit(NewExpression const&)
{
m_indentation--;
}
void ASTPrinter::endVisit(MemberAccess const&)
{
m_indentation--;
}
void ASTPrinter::endVisit(IndexAccess const&)
{
m_indentation--;
}
void ASTPrinter::endVisit(PrimaryExpression const&)
{
m_indentation--;
}
void ASTPrinter::endVisit(Identifier const&)
{
m_indentation--;
}
void ASTPrinter::endVisit(ElementaryTypeNameExpression const&)
{
m_indentation--;
}
void ASTPrinter::endVisit(Literal const&)
{
m_indentation--;
}
void ASTPrinter::printSourcePart(ASTNode const& _node)
{
if (!m_source.empty())
{
Location const& location(_node.getLocation());
*m_ostream << getIndentation() << " Source: "
<< escaped(m_source.substr(location.start, location.end - location.start), false) << endl;
}
}
void ASTPrinter::printType(Expression const& _expression)
{
if (_expression.getType())
*m_ostream << getIndentation() << " Type: " << _expression.getType()->toString() << "\n";
else
*m_ostream << getIndentation() << " Type unknown.\n";
}
string ASTPrinter::getIndentation() const
{
return string(m_indentation * 2, ' ');
}
void ASTPrinter::writeLine(string const& _line)
{
*m_ostream << getIndentation() << _line << endl;
}
}
}

141
ASTPrinter.h
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@ -1,141 +0,0 @@
/*
This file is part of cpp-ethereum.
cpp-ethereum is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
cpp-ethereum is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @author Christian <c@ethdev.com>
* @date 2014
* Pretty-printer for the abstract syntax tree (the "pretty" is arguable), used for debugging.
*/
#pragma once
#include <ostream>
#include <libsolidity/ASTVisitor.h>
namespace dev
{
namespace solidity
{
/**
* Pretty-printer for the abstract syntax tree (the "pretty" is arguable) for debugging purposes.
*/
class ASTPrinter: public ASTConstVisitor
{
public:
/// Create a printer for the given abstract syntax tree. If the source is specified,
/// the corresponding parts of the source are printed with each node.
ASTPrinter(ASTNode const& _ast, std::string const& _source = std::string());
/// Output the string representation of the AST to _stream.
void print(std::ostream& _stream);
bool visit(ImportDirective const& _node) override;
bool visit(ContractDefinition const& _node) override;
bool visit(InheritanceSpecifier const& _node) override;
bool visit(StructDefinition const& _node) override;
bool visit(EnumDefinition const& _node) override;
bool visit(EnumValue const& _node) override;
bool visit(ParameterList const& _node) override;
bool visit(FunctionDefinition const& _node) override;
bool visit(VariableDeclaration const& _node) override;
bool visit(ModifierDefinition const& _node) override;
bool visit(ModifierInvocation const& _node) override;
bool visit(EventDefinition const& _node) override;
bool visit(TypeName const& _node) override;
bool visit(ElementaryTypeName const& _node) override;
bool visit(UserDefinedTypeName const& _node) override;
bool visit(Mapping const& _node) override;
bool visit(Statement const& _node) override;
bool visit(Block const& _node) override;
bool visit(PlaceholderStatement const& _node) override;
bool visit(IfStatement const& _node) override;
bool visit(BreakableStatement const& _node) override;
bool visit(WhileStatement const& _node) override;
bool visit(ForStatement const& _node) override;
bool visit(Continue const& _node) override;
bool visit(Break const& _node) override;
bool visit(Return const& _node) override;
bool visit(VariableDefinition const& _node) override;
bool visit(ExpressionStatement const& _node) override;
bool visit(Expression const& _node) override;
bool visit(Assignment const& _node) override;
bool visit(UnaryOperation const& _node) override;
bool visit(BinaryOperation const& _node) override;
bool visit(FunctionCall const& _node) override;
bool visit(NewExpression const& _node) override;
bool visit(MemberAccess const& _node) override;
bool visit(IndexAccess const& _node) override;
bool visit(PrimaryExpression const& _node) override;
bool visit(Identifier const& _node) override;
bool visit(ElementaryTypeNameExpression const& _node) override;
bool visit(Literal const& _node) override;
void endVisit(ImportDirective const&) override;
void endVisit(ContractDefinition const&) override;
void endVisit(InheritanceSpecifier const&) override;
void endVisit(StructDefinition const&) override;
void endVisit(EnumDefinition const&) override;
void endVisit(EnumValue const&) override;
void endVisit(ParameterList const&) override;
void endVisit(FunctionDefinition const&) override;
void endVisit(VariableDeclaration const&) override;
void endVisit(ModifierDefinition const&) override;
void endVisit(ModifierInvocation const&) override;
void endVisit(EventDefinition const&) override;
void endVisit(TypeName const&) override;
void endVisit(ElementaryTypeName const&) override;
void endVisit(UserDefinedTypeName const&) override;
void endVisit(Mapping const&) override;
void endVisit(Statement const&) override;
void endVisit(Block const&) override;
void endVisit(PlaceholderStatement const&) override;
void endVisit(IfStatement const&) override;
void endVisit(BreakableStatement const&) override;
void endVisit(WhileStatement const&) override;
void endVisit(ForStatement const&) override;
void endVisit(Continue const&) override;
void endVisit(Break const&) override;
void endVisit(Return const&) override;
void endVisit(VariableDefinition const&) override;
void endVisit(ExpressionStatement const&) override;
void endVisit(Expression const&) override;
void endVisit(Assignment const&) override;
void endVisit(UnaryOperation const&) override;
void endVisit(BinaryOperation const&) override;
void endVisit(FunctionCall const&) override;
void endVisit(NewExpression const&) override;
void endVisit(MemberAccess const&) override;
void endVisit(IndexAccess const&) override;
void endVisit(PrimaryExpression const&) override;
void endVisit(Identifier const&) override;
void endVisit(ElementaryTypeNameExpression const&) override;
void endVisit(Literal const&) override;
private:
void printSourcePart(ASTNode const& _node);
void printType(Expression const& _expression);
std::string getIndentation() const;
void writeLine(std::string const& _line);
bool goDeeper() { m_indentation++; return true; }
int m_indentation;
std::string m_source;
ASTNode const* m_ast;
std::ostream* m_ostream;
};
}
}

222
ASTVisitor.h
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/*
This file is part of cpp-ethereum.
cpp-ethereum is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
cpp-ethereum is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @author Christian <c@ethdev.com>
* @date 2014
* AST visitor base class.
*/
#pragma once
#include <libsolidity/ASTForward.h>
#include <string>
namespace dev
{
namespace solidity
{
/**
* Visitor interface for the abstract syntax tree. This class is tightly bound to the
* implementation of @ref ASTNode::accept and its overrides. After a call to
* @ref ASTNode::accept, the function visit for the appropriate parameter is called and then
* (if it returns true) this continues recursively for all child nodes in document order
* (there is an exception for contracts). After all child nodes have been visited, endVisit is
* called for the node.
*/
class ASTVisitor
{
public:
virtual bool visit(ASTNode&) { return true; }
virtual bool visit(SourceUnit&) { return true; }
virtual bool visit(ImportDirective&) { return true; }
virtual bool visit(ContractDefinition&) { return true; }
virtual bool visit(InheritanceSpecifier&) { return true; }
virtual bool visit(StructDefinition&) { return true; }
virtual bool visit(EnumDefinition&) { return true; }
virtual bool visit(EnumValue&) { return true; }
virtual bool visit(ParameterList&) { return true; }
virtual bool visit(FunctionDefinition&) { return true; }
virtual bool visit(VariableDeclaration&) { return true; }
virtual bool visit(ModifierDefinition&) { return true; }
virtual bool visit(ModifierInvocation&) { return true; }
virtual bool visit(EventDefinition&) { return true; }
virtual bool visit(TypeName&) { return true; }
virtual bool visit(ElementaryTypeName&) { return true; }
virtual bool visit(UserDefinedTypeName&) { return true; }
virtual bool visit(Mapping&) { return true; }
virtual bool visit(Statement&) { return true; }
virtual bool visit(Block&) { return true; }
virtual bool visit(PlaceholderStatement&) { return true; }
virtual bool visit(IfStatement&) { return true; }
virtual bool visit(BreakableStatement&) { return true; }
virtual bool visit(WhileStatement&) { return true; }
virtual bool visit(ForStatement&) { return true; }
virtual bool visit(Continue&) { return true; }
virtual bool visit(Break&) { return true; }
virtual bool visit(Return&) { return true; }
virtual bool visit(VariableDefinition&) { return true; }
virtual bool visit(ExpressionStatement&) { return true; }
virtual bool visit(Expression&) { return true; }
virtual bool visit(Assignment&) { return true; }
virtual bool visit(UnaryOperation&) { return true; }
virtual bool visit(BinaryOperation&) { return true; }
virtual bool visit(FunctionCall&) { return true; }
virtual bool visit(NewExpression&) { return true; }
virtual bool visit(MemberAccess&) { return true; }
virtual bool visit(IndexAccess&) { return true; }
virtual bool visit(PrimaryExpression&) { return true; }
virtual bool visit(Identifier&) { return true; }
virtual bool visit(ElementaryTypeNameExpression&) { return true; }
virtual bool visit(Literal&) { return true; }
virtual void endVisit(ASTNode&) { }
virtual void endVisit(SourceUnit&) { }
virtual void endVisit(ImportDirective&) { }
virtual void endVisit(ContractDefinition&) { }
virtual void endVisit(InheritanceSpecifier&) { }
virtual void endVisit(StructDefinition&) { }
virtual void endVisit(EnumDefinition&) { }
virtual void endVisit(EnumValue&) { }
virtual void endVisit(ParameterList&) { }
virtual void endVisit(FunctionDefinition&) { }
virtual void endVisit(VariableDeclaration&) { }
virtual void endVisit(ModifierDefinition&) { }
virtual void endVisit(ModifierInvocation&) { }
virtual void endVisit(EventDefinition&) { }
virtual void endVisit(TypeName&) { }
virtual void endVisit(ElementaryTypeName&) { }
virtual void endVisit(UserDefinedTypeName&) { }
virtual void endVisit(Mapping&) { }
virtual void endVisit(Statement&) { }
virtual void endVisit(Block&) { }
virtual void endVisit(PlaceholderStatement&) { }
virtual void endVisit(IfStatement&) { }
virtual void endVisit(BreakableStatement&) { }
virtual void endVisit(WhileStatement&) { }
virtual void endVisit(ForStatement&) { }
virtual void endVisit(Continue&) { }
virtual void endVisit(Break&) { }
virtual void endVisit(Return&) { }
virtual void endVisit(VariableDefinition&) { }
virtual void endVisit(ExpressionStatement&) { }
virtual void endVisit(Expression&) { }
virtual void endVisit(Assignment&) { }
virtual void endVisit(UnaryOperation&) { }
virtual void endVisit(BinaryOperation&) { }
virtual void endVisit(FunctionCall&) { }
virtual void endVisit(NewExpression&) { }
virtual void endVisit(MemberAccess&) { }
virtual void endVisit(IndexAccess&) { }
virtual void endVisit(PrimaryExpression&) { }
virtual void endVisit(Identifier&) { }
virtual void endVisit(ElementaryTypeNameExpression&) { }
virtual void endVisit(Literal&) { }
};
class ASTConstVisitor
{
public:
virtual bool visit(ASTNode const&) { return true; }
virtual bool visit(SourceUnit const&) { return true; }
virtual bool visit(ImportDirective const&) { return true; }
virtual bool visit(ContractDefinition const&) { return true; }
virtual bool visit(InheritanceSpecifier const&) { return true; }
virtual bool visit(StructDefinition const&) { return true; }
virtual bool visit(EnumDefinition const&) { return true; }
virtual bool visit(EnumValue const&) { return true; }
virtual bool visit(ParameterList const&) { return true; }
virtual bool visit(FunctionDefinition const&) { return true; }
virtual bool visit(VariableDeclaration const&) { return true; }
virtual bool visit(ModifierDefinition const&) { return true; }
virtual bool visit(ModifierInvocation const&) { return true; }
virtual bool visit(EventDefinition const&) { return true; }
virtual bool visit(TypeName const&) { return true; }
virtual bool visit(ElementaryTypeName const&) { return true; }
virtual bool visit(UserDefinedTypeName const&) { return true; }
virtual bool visit(Mapping const&) { return true; }
virtual bool visit(Statement const&) { return true; }
virtual bool visit(Block const&) { return true; }
virtual bool visit(PlaceholderStatement const&) { return true; }
virtual bool visit(IfStatement const&) { return true; }
virtual bool visit(BreakableStatement const&) { return true; }
virtual bool visit(WhileStatement const&) { return true; }
virtual bool visit(ForStatement const&) { return true; }
virtual bool visit(Continue const&) { return true; }
virtual bool visit(Break const&) { return true; }
virtual bool visit(Return const&) { return true; }
virtual bool visit(VariableDefinition const&) { return true; }
virtual bool visit(ExpressionStatement const&) { return true; }
virtual bool visit(Expression const&) { return true; }
virtual bool visit(Assignment const&) { return true; }
virtual bool visit(UnaryOperation const&) { return true; }
virtual bool visit(BinaryOperation const&) { return true; }
virtual bool visit(FunctionCall const&) { return true; }
virtual bool visit(NewExpression const&) { return true; }
virtual bool visit(MemberAccess const&) { return true; }
virtual bool visit(IndexAccess const&) { return true; }
virtual bool visit(PrimaryExpression const&) { return true; }
virtual bool visit(Identifier const&) { return true; }
virtual bool visit(ElementaryTypeNameExpression const&) { return true; }
virtual bool visit(Literal const&) { return true; }
virtual void endVisit(ASTNode const&) { }
virtual void endVisit(SourceUnit const&) { }
virtual void endVisit(ImportDirective const&) { }
virtual void endVisit(ContractDefinition const&) { }
virtual void endVisit(InheritanceSpecifier const&) { }
virtual void endVisit(StructDefinition const&) { }
virtual void endVisit(EnumDefinition const&) { }
virtual void endVisit(EnumValue const&) { }
virtual void endVisit(ParameterList const&) { }
virtual void endVisit(FunctionDefinition const&) { }
virtual void endVisit(VariableDeclaration const&) { }
virtual void endVisit(ModifierDefinition const&) { }
virtual void endVisit(ModifierInvocation const&) { }
virtual void endVisit(EventDefinition const&) { }
virtual void endVisit(TypeName const&) { }
virtual void endVisit(ElementaryTypeName const&) { }
virtual void endVisit(UserDefinedTypeName const&) { }
virtual void endVisit(Mapping const&) { }
virtual void endVisit(Statement const&) { }
virtual void endVisit(Block const&) { }
virtual void endVisit(PlaceholderStatement const&) { }
virtual void endVisit(IfStatement const&) { }
virtual void endVisit(BreakableStatement const&) { }
virtual void endVisit(WhileStatement const&) { }
virtual void endVisit(ForStatement const&) { }
virtual void endVisit(Continue const&) { }
virtual void endVisit(Break const&) { }
virtual void endVisit(Return const&) { }
virtual void endVisit(VariableDefinition const&) { }
virtual void endVisit(ExpressionStatement const&) { }
virtual void endVisit(Expression const&) { }
virtual void endVisit(Assignment const&) { }
virtual void endVisit(UnaryOperation const&) { }
virtual void endVisit(BinaryOperation const&) { }
virtual void endVisit(FunctionCall const&) { }
virtual void endVisit(NewExpression const&) { }
virtual void endVisit(MemberAccess const&) { }
virtual void endVisit(IndexAccess const&) { }
virtual void endVisit(PrimaryExpression const&) { }
virtual void endVisit(Identifier const&) { }
virtual void endVisit(ElementaryTypeNameExpression const&) { }
virtual void endVisit(Literal const&) { }
};
}
}

659
AST_accept.h
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@ -1,659 +0,0 @@
/*
This file is part of cpp-ethereum.
cpp-ethereum is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
cpp-ethereum is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @author Christian <c@ethdev.com>
* @date 2014
* Implementation of the accept functions of AST nodes, included by AST.cpp to not clutter that
* file with these mechanical implementations.
*/
#pragma once
#include <libsolidity/AST.h>
#include <libsolidity/ASTVisitor.h>
namespace dev
{
namespace solidity
{
void SourceUnit::accept(ASTVisitor& _visitor)
{
if (_visitor.visit(*this))
listAccept(m_nodes, _visitor);
_visitor.endVisit(*this);
}
void SourceUnit::accept(ASTConstVisitor& _visitor) const
{
if (_visitor.visit(*this))
listAccept(m_nodes, _visitor);
_visitor.endVisit(*this);
}
void ImportDirective::accept(ASTVisitor& _visitor)
{
_visitor.visit(*this);
_visitor.endVisit(*this);
}
void ImportDirective::accept(ASTConstVisitor& _visitor) const
{
_visitor.visit(*this);
_visitor.endVisit(*this);
}
void ContractDefinition::accept(ASTVisitor& _visitor)
{
if (_visitor.visit(*this))
{
listAccept(m_baseContracts, _visitor);
listAccept(m_definedStructs, _visitor);
listAccept(m_definedEnums, _visitor);
listAccept(m_stateVariables, _visitor);
listAccept(m_events, _visitor);
listAccept(m_functionModifiers, _visitor);
listAccept(m_definedFunctions, _visitor);
}
_visitor.endVisit(*this);
}
void ContractDefinition::accept(ASTConstVisitor& _visitor) const
{
if (_visitor.visit(*this))
{
listAccept(m_baseContracts, _visitor);
listAccept(m_definedStructs, _visitor);
listAccept(m_definedEnums, _visitor);
listAccept(m_stateVariables, _visitor);
listAccept(m_events, _visitor);
listAccept(m_functionModifiers, _visitor);
listAccept(m_definedFunctions, _visitor);
}
_visitor.endVisit(*this);
}
void InheritanceSpecifier::accept(ASTVisitor& _visitor)
{
if (_visitor.visit(*this))
{
m_baseName->accept(_visitor);
listAccept(m_arguments, _visitor);
}
_visitor.endVisit(*this);
}
void InheritanceSpecifier::accept(ASTConstVisitor& _visitor) const
{
if (_visitor.visit(*this))
{
m_baseName->accept(_visitor);
listAccept(m_arguments, _visitor);
}
_visitor.endVisit(*this);
}
void EnumDefinition::accept(ASTVisitor& _visitor)
{
if (_visitor.visit(*this))
listAccept(m_members, _visitor);
_visitor.endVisit(*this);
}
void EnumDefinition::accept(ASTConstVisitor& _visitor) const
{
if (_visitor.visit(*this))
listAccept(m_members, _visitor);
_visitor.endVisit(*this);
}
void EnumValue::accept(ASTVisitor& _visitor)
{
_visitor.visit(*this);
_visitor.endVisit(*this);
}
void EnumValue::accept(ASTConstVisitor& _visitor) const
{
_visitor.visit(*this);
_visitor.endVisit(*this);
}
void StructDefinition::accept(ASTVisitor& _visitor)
{
if (_visitor.visit(*this))
listAccept(m_members, _visitor);
_visitor.endVisit(*this);
}
void StructDefinition::accept(ASTConstVisitor& _visitor) const
{
if (_visitor.visit(*this))
listAccept(m_members, _visitor);
_visitor.endVisit(*this);
}
void StructDefinition::checkValidityOfMembers() const
{
checkMemberTypes();
checkRecursion();
}
void ParameterList::accept(ASTVisitor& _visitor)
{
if (_visitor.visit(*this))
listAccept(m_parameters, _visitor);
_visitor.endVisit(*this);
}
void ParameterList::accept(ASTConstVisitor& _visitor) const
{
if (_visitor.visit(*this))
listAccept(m_parameters, _visitor);
_visitor.endVisit(*this);
}
void FunctionDefinition::accept(ASTVisitor& _visitor)
{
if (_visitor.visit(*this))
{
m_parameters->accept(_visitor);
if (m_returnParameters)
m_returnParameters->accept(_visitor);
listAccept(m_functionModifiers, _visitor);
m_body->accept(_visitor);
}
_visitor.endVisit(*this);
}
void FunctionDefinition::accept(ASTConstVisitor& _visitor) const
{
if (_visitor.visit(*this))
{
m_parameters->accept(_visitor);
if (m_returnParameters)
m_returnParameters->accept(_visitor);
listAccept(m_functionModifiers, _visitor);
m_body->accept(_visitor);
}
_visitor.endVisit(*this);
}
void VariableDeclaration::accept(ASTVisitor& _visitor)
{
if (_visitor.visit(*this))
if (m_typeName)
m_typeName->accept(_visitor);
_visitor.endVisit(*this);
}
void VariableDeclaration::accept(ASTConstVisitor& _visitor) const
{
if (_visitor.visit(*this))
if (m_typeName)
m_typeName->accept(_visitor);
_visitor.endVisit(*this);
}
void ModifierDefinition::accept(ASTVisitor& _visitor)
{
if (_visitor.visit(*this))
{
m_parameters->accept(_visitor);
m_body->accept(_visitor);
}
_visitor.endVisit(*this);
}
void ModifierDefinition::accept(ASTConstVisitor& _visitor) const
{
if (_visitor.visit(*this))
{
m_parameters->accept(_visitor);
m_body->accept(_visitor);
}
_visitor.endVisit(*this);
}
void ModifierInvocation::accept(ASTVisitor& _visitor)
{
if (_visitor.visit(*this))
{
m_modifierName->accept(_visitor);
listAccept(m_arguments, _visitor);
}
_visitor.endVisit(*this);
}
void ModifierInvocation::accept(ASTConstVisitor& _visitor) const
{
if (_visitor.visit(*this))
{
m_modifierName->accept(_visitor);
listAccept(m_arguments, _visitor);
}
_visitor.endVisit(*this);
}
void EventDefinition::accept(ASTVisitor& _visitor)
{
if (_visitor.visit(*this))
m_parameters->accept(_visitor);
_visitor.endVisit(*this);
}
void EventDefinition::accept(ASTConstVisitor& _visitor) const
{
if (_visitor.visit(*this))
m_parameters->accept(_visitor);
_visitor.endVisit(*this);
}
void TypeName::accept(ASTVisitor& _visitor)
{
_visitor.visit(*this);
_visitor.endVisit(*this);
}
void TypeName::accept(ASTConstVisitor& _visitor) const
{
_visitor.visit(*this);
_visitor.endVisit(*this);
}
void ElementaryTypeName::accept(ASTVisitor& _visitor)
{
_visitor.visit(*this);
_visitor.endVisit(*this);
}
void ElementaryTypeName::accept(ASTConstVisitor& _visitor) const
{
_visitor.visit(*this);
_visitor.endVisit(*this);
}
void UserDefinedTypeName::accept(ASTVisitor& _visitor)
{
_visitor.visit(*this);
_visitor.endVisit(*this);
}
void UserDefinedTypeName::accept(ASTConstVisitor& _visitor) const
{
_visitor.visit(*this);
_visitor.endVisit(*this);
}
void Mapping::accept(ASTVisitor& _visitor)
{
if (_visitor.visit(*this))
{
m_keyType->accept(_visitor);
m_valueType->accept(_visitor);
}
_visitor.endVisit(*this);
}
void Mapping::accept(ASTConstVisitor& _visitor) const
{
if (_visitor.visit(*this))
{
m_keyType->accept(_visitor);
m_valueType->accept(_visitor);
}
_visitor.endVisit(*this);
}
void Block::accept(ASTVisitor& _visitor)
{
if (_visitor.visit(*this))
listAccept(m_statements, _visitor);
_visitor.endVisit(*this);
}
void Block::accept(ASTConstVisitor& _visitor) const
{
if (_visitor.visit(*this))
listAccept(m_statements, _visitor);
_visitor.endVisit(*this);
}
void PlaceholderStatement::accept(ASTVisitor& _visitor)
{
_visitor.visit(*this);
_visitor.endVisit(*this);
}
void PlaceholderStatement::accept(ASTConstVisitor& _visitor) const
{
_visitor.visit(*this);
_visitor.endVisit(*this);
}
void IfStatement::accept(ASTVisitor& _visitor)
{
if (_visitor.visit(*this))
{
m_condition->accept(_visitor);
m_trueBody->accept(_visitor);
if (m_falseBody)
m_falseBody->accept(_visitor);
}
_visitor.endVisit(*this);
}
void IfStatement::accept(ASTConstVisitor& _visitor) const
{
if (_visitor.visit(*this))
{
m_condition->accept(_visitor);
m_trueBody->accept(_visitor);
if (m_falseBody)
m_falseBody->accept(_visitor);
}
_visitor.endVisit(*this);
}
void WhileStatement::accept(ASTVisitor& _visitor)
{
if (_visitor.visit(*this))
{
m_condition->accept(_visitor);
m_body->accept(_visitor);
}
_visitor.endVisit(*this);
}
void WhileStatement::accept(ASTConstVisitor& _visitor) const
{
if (_visitor.visit(*this))
{
m_condition->accept(_visitor);
m_body->accept(_visitor);
}
_visitor.endVisit(*this);
}
void ForStatement::accept(ASTVisitor& _visitor)
{
if (_visitor.visit(*this))
{
if (m_initExpression)
m_initExpression->accept(_visitor);
if (m_condExpression)
m_condExpression->accept(_visitor);
if (m_loopExpression)
m_loopExpression->accept(_visitor);
m_body->accept(_visitor);
}
_visitor.endVisit(*this);
}
void ForStatement::accept(ASTConstVisitor& _visitor) const
{
if (_visitor.visit(*this))
{
if (m_initExpression)
m_initExpression->accept(_visitor);
if (m_condExpression)
m_condExpression->accept(_visitor);
if (m_loopExpression)
m_loopExpression->accept(_visitor);
m_body->accept(_visitor);
}
_visitor.endVisit(*this);
}
void Continue::accept(ASTVisitor& _visitor)
{
_visitor.visit(*this);
_visitor.endVisit(*this);
}
void Continue::accept(ASTConstVisitor& _visitor) const
{
_visitor.visit(*this);
_visitor.endVisit(*this);
}
void Break::accept(ASTVisitor& _visitor)
{
_visitor.visit(*this);
_visitor.endVisit(*this);
}
void Break::accept(ASTConstVisitor& _visitor) const
{
_visitor.visit(*this);
_visitor.endVisit(*this);
}
void Return::accept(ASTVisitor& _visitor)
{
if (_visitor.visit(*this))
if (m_expression)
m_expression->accept(_visitor);
_visitor.endVisit(*this);
}
void Return::accept(ASTConstVisitor& _visitor) const
{
if (_visitor.visit(*this))
if (m_expression)
m_expression->accept(_visitor);
_visitor.endVisit(*this);
}
void ExpressionStatement::accept(ASTVisitor& _visitor)
{
if (_visitor.visit(*this))
if (m_expression)
m_expression->accept(_visitor);
_visitor.endVisit(*this);
}
void ExpressionStatement::accept(ASTConstVisitor& _visitor) const
{
if (_visitor.visit(*this))
if (m_expression)
m_expression->accept(_visitor);
_visitor.endVisit(*this);
}
void VariableDefinition::accept(ASTVisitor& _visitor)
{
if (_visitor.visit(*this))
{
m_variable->accept(_visitor);
if (m_value)
m_value->accept(_visitor);
}
_visitor.endVisit(*this);
}
void VariableDefinition::accept(ASTConstVisitor& _visitor) const
{
if (_visitor.visit(*this))
{
m_variable->accept(_visitor);
if (m_value)
m_value->accept(_visitor);
}
_visitor.endVisit(*this);
}
void Assignment::accept(ASTVisitor& _visitor)
{
if (_visitor.visit(*this))
{
m_leftHandSide->accept(_visitor);
m_rightHandSide->accept(_visitor);
}
_visitor.endVisit(*this);
}
void Assignment::accept(ASTConstVisitor& _visitor) const
{
if (_visitor.visit(*this))
{
m_leftHandSide->accept(_visitor);
m_rightHandSide->accept(_visitor);
}
_visitor.endVisit(*this);
}
void UnaryOperation::accept(ASTVisitor& _visitor)
{
if (_visitor.visit(*this))
m_subExpression->accept(_visitor);
_visitor.endVisit(*this);
}
void UnaryOperation::accept(ASTConstVisitor& _visitor) const
{
if (_visitor.visit(*this))
m_subExpression->accept(_visitor);
_visitor.endVisit(*this);
}
void BinaryOperation::accept(ASTVisitor& _visitor)
{
if (_visitor.visit(*this))
{
m_left->accept(_visitor);
m_right->accept(_visitor);
}
_visitor.endVisit(*this);
}
void BinaryOperation::accept(ASTConstVisitor& _visitor) const
{
if (_visitor.visit(*this))
{
m_left->accept(_visitor);
m_right->accept(_visitor);
}
_visitor.endVisit(*this);
}
void FunctionCall::accept(ASTVisitor& _visitor)
{
if (_visitor.visit(*this))
{
m_expression->accept(_visitor);
listAccept(m_arguments, _visitor);
}
_visitor.endVisit(*this);
}
void FunctionCall::accept(ASTConstVisitor& _visitor) const
{
if (_visitor.visit(*this))
{
m_expression->accept(_visitor);
listAccept(m_arguments, _visitor);
}
_visitor.endVisit(*this);
}
void NewExpression::accept(ASTVisitor& _visitor)
{
if (_visitor.visit(*this))
m_contractName->accept(_visitor);
_visitor.endVisit(*this);
}
void NewExpression::accept(ASTConstVisitor& _visitor) const
{
if (_visitor.visit(*this))
m_contractName->accept(_visitor);
_visitor.endVisit(*this);
}
void MemberAccess::accept(ASTVisitor& _visitor)
{
if (_visitor.visit(*this))
m_expression->accept(_visitor);
_visitor.endVisit(*this);
}
void MemberAccess::accept(ASTConstVisitor& _visitor) const
{
if (_visitor.visit(*this))
m_expression->accept(_visitor);
_visitor.endVisit(*this);
}
void IndexAccess::accept(ASTVisitor& _visitor)
{
if (_visitor.visit(*this))
{
m_base->accept(_visitor);
m_index->accept(_visitor);
}
_visitor.endVisit(*this);
}
void IndexAccess::accept(ASTConstVisitor& _visitor) const
{
if (_visitor.visit(*this))
{
m_base->accept(_visitor);
m_index->accept(_visitor);
}
_visitor.endVisit(*this);
}
void Identifier::accept(ASTVisitor& _visitor)
{
_visitor.visit(*this);
_visitor.endVisit(*this);
}
void Identifier::accept(ASTConstVisitor& _visitor) const
{
_visitor.visit(*this);
_visitor.endVisit(*this);
}
void ElementaryTypeNameExpression::accept(ASTVisitor& _visitor)
{
_visitor.visit(*this);
_visitor.endVisit(*this);
}
void ElementaryTypeNameExpression::accept(ASTConstVisitor& _visitor) const
{
_visitor.visit(*this);
_visitor.endVisit(*this);
}
void Literal::accept(ASTVisitor& _visitor)
{
_visitor.visit(*this);
_visitor.endVisit(*this);
}
void Literal::accept(ASTConstVisitor& _visitor) const
{
_visitor.visit(*this);
_visitor.endVisit(*this);
}
}
}

60
BaseTypes.h
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@ -1,60 +0,0 @@
/*
This file is part of cpp-ethereum.
cpp-ethereum is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
cpp-ethereum is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @author Christian <c@ethdev.com>
* @date 2014
* Some elementary types for the parser.
*/
#pragma once
#include <memory>
#include <string>
#include <ostream>
namespace dev
{
namespace solidity
{
/**
* Representation of an interval of source positions.
* The interval includes start and excludes end.
*/
struct Location
{
Location(int _start, int _end, std::shared_ptr<std::string const> _sourceName):
start(_start), end(_end), sourceName(_sourceName) { }
Location(): start(-1), end(-1) { }
bool isEmpty() const { return start == -1 && end == -1; }
int start;
int end;
std::shared_ptr<std::string const> sourceName;
};
/// Stream output for Location (used e.g. in boost exceptions).
inline std::ostream& operator<<(std::ostream& _out, Location const& _location)
{
if (_location.isEmpty())
return _out << "NO_LOCATION_SPECIFIED";
return _out << *_location.sourceName << "[" << _location.start << "," << _location.end << ")";
}
}
}

35
CMakeLists.txt
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@ -1,35 +0,0 @@
cmake_policy(SET CMP0015 NEW)
# this policy was introduced in cmake 3.0
# remove if, once 3.0 will be used on unix
if (${CMAKE_MAJOR_VERSION} GREATER 2)
# old policy do not use MACOSX_RPATH
cmake_policy(SET CMP0042 OLD)
endif()
set(CMAKE_AUTOMOC OFF)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -DSTATICLIB")
aux_source_directory(. SRC_LIST)
include_directories(BEFORE ${JSONCPP_INCLUDE_DIRS})
include_directories(BEFORE ..)
include_directories(${Boost_INCLUDE_DIRS})
set(EXECUTABLE solidity)
file(GLOB HEADERS "*.h")
if (ETH_STATIC)
add_library(${EXECUTABLE} STATIC ${SRC_LIST} ${HEADERS})
else()
add_library(${EXECUTABLE} SHARED ${SRC_LIST} ${HEADERS})
endif()
target_link_libraries(${EXECUTABLE} ${JSONCPP_LIBRARIES})
target_link_libraries(${EXECUTABLE} evmcore)
target_link_libraries(${EXECUTABLE} devcore)
target_link_libraries(${EXECUTABLE} devcrypto)
install( TARGETS ${EXECUTABLE} ARCHIVE DESTINATION lib LIBRARY DESTINATION lib )
install( FILES ${HEADERS} DESTINATION include/${EXECUTABLE} )

498
Compiler.cpp
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@ -1,498 +0,0 @@
/*
This file is part of cpp-ethereum.
cpp-ethereum is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
cpp-ethereum is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @author Christian <c@ethdev.com>
* @date 2014
* Solidity compiler.
*/
#include <algorithm>
#include <boost/range/adaptor/reversed.hpp>
#include <libevmcore/Instruction.h>
#include <libevmcore/Assembly.h>
#include <libsolidity/AST.h>
#include <libsolidity/Compiler.h>
#include <libsolidity/ExpressionCompiler.h>
#include <libsolidity/CompilerUtils.h>
using namespace std;
namespace dev {
namespace solidity {
void Compiler::compileContract(ContractDefinition const& _contract,
map<ContractDefinition const*, bytes const*> const& _contracts)
{
m_context = CompilerContext(); // clear it just in case
initializeContext(_contract, _contracts);
appendFunctionSelector(_contract);
set<Declaration const*> functions = m_context.getFunctionsWithoutCode();
while (!functions.empty())
{
for (Declaration const* function: functions)
function->accept(*this);
functions = m_context.getFunctionsWithoutCode();
}
// Swap the runtime context with the creation-time context
swap(m_context, m_runtimeContext);
initializeContext(_contract, _contracts);
packIntoContractCreator(_contract, m_runtimeContext);
}
void Compiler::initializeContext(ContractDefinition const& _contract,
map<ContractDefinition const*, bytes const*> const& _contracts)
{
m_context.setCompiledContracts(_contracts);
m_context.setInheritanceHierarchy(_contract.getLinearizedBaseContracts());
registerStateVariables(_contract);
}
void Compiler::packIntoContractCreator(ContractDefinition const& _contract, CompilerContext const& _runtimeContext)
{
// arguments for base constructors, filled in derived-to-base order
map<ContractDefinition const*, vector<ASTPointer<Expression>> const*> baseArguments;
// Determine the arguments that are used for the base constructors.
std::vector<ContractDefinition const*> const& bases = _contract.getLinearizedBaseContracts();
for (ContractDefinition const* contract: bases)
for (ASTPointer<InheritanceSpecifier> const& base: contract->getBaseContracts())
{
ContractDefinition const* baseContract = dynamic_cast<ContractDefinition const*>(
base->getName()->getReferencedDeclaration());
solAssert(baseContract, "");
if (baseArguments.count(baseContract) == 0)
baseArguments[baseContract] = &base->getArguments();
}
// Call constructors in base-to-derived order.
// The Constructor for the most derived contract is called later.
for (unsigned i = 1; i < bases.size(); i++)
{
ContractDefinition const* base = bases[bases.size() - i];
solAssert(base, "");
FunctionDefinition const* baseConstructor = base->getConstructor();
if (!baseConstructor)
continue;
solAssert(baseArguments[base], "");
appendBaseConstructorCall(*baseConstructor, *baseArguments[base]);
}
if (_contract.getConstructor())
appendConstructorCall(*_contract.getConstructor());
eth::AssemblyItem sub = m_context.addSubroutine(_runtimeContext.getAssembly());
// stack contains sub size
m_context << eth::Instruction::DUP1 << sub << u256(0) << eth::Instruction::CODECOPY;
m_context << u256(0) << eth::Instruction::RETURN;
// note that we have to include the functions again because of absolute jump labels
set<Declaration const*> functions = m_context.getFunctionsWithoutCode();
while (!functions.empty())
{
for (Declaration const* function: functions)
function->accept(*this);
functions = m_context.getFunctionsWithoutCode();
}
}
void Compiler::appendBaseConstructorCall(FunctionDefinition const& _constructor,
vector<ASTPointer<Expression>> const& _arguments)
{
FunctionType constructorType(_constructor);
eth::AssemblyItem returnLabel = m_context.pushNewTag();
for (unsigned i = 0; i < _arguments.size(); ++i)
compileExpression(*_arguments[i], constructorType.getParameterTypes()[i]);
m_context.appendJumpTo(m_context.getFunctionEntryLabel(_constructor));
m_context << returnLabel;
}
void Compiler::appendConstructorCall(FunctionDefinition const& _constructor)
{
eth::AssemblyItem returnTag = m_context.pushNewTag();
// copy constructor arguments from code to memory and then to stack, they are supplied after the actual program
unsigned argumentSize = 0;
for (ASTPointer<VariableDeclaration> const& var: _constructor.getParameters())
argumentSize += CompilerUtils::getPaddedSize(var->getType()->getCalldataEncodedSize());
if (argumentSize > 0)
{
m_context << u256(argumentSize);
m_context.appendProgramSize();
m_context << u256(CompilerUtils::dataStartOffset); // copy it to byte four as expected for ABI calls
m_context << eth::Instruction::CODECOPY;
appendCalldataUnpacker(FunctionType(_constructor).getParameterTypes(), true);
}
m_context.appendJumpTo(m_context.getFunctionEntryLabel(_constructor));
m_context << returnTag;
}
void Compiler::appendFunctionSelector(ContractDefinition const& _contract)
{
map<FixedHash<4>, FunctionTypePointer> interfaceFunctions = _contract.getInterfaceFunctions();
map<FixedHash<4>, const eth::AssemblyItem> callDataUnpackerEntryPoints;
// retrieve the function signature hash from the calldata
if (!interfaceFunctions.empty())
CompilerUtils(m_context).loadFromMemory(0, IntegerType(CompilerUtils::dataStartOffset * 8), true);
// stack now is: 1 0 <funhash>
for (auto const& it: interfaceFunctions)
{
callDataUnpackerEntryPoints.insert(std::make_pair(it.first, m_context.newTag()));
m_context << eth::dupInstruction(1) << u256(FixedHash<4>::Arith(it.first)) << eth::Instruction::EQ;
m_context.appendConditionalJumpTo(callDataUnpackerEntryPoints.at(it.first));
}
if (FunctionDefinition const* fallback = _contract.getFallbackFunction())
{
eth::AssemblyItem returnTag = m_context.pushNewTag();
fallback->accept(*this);
m_context << returnTag;
appendReturnValuePacker(FunctionType(*fallback).getReturnParameterTypes());
}
else
m_context << eth::Instruction::STOP; // function not found
for (auto const& it: interfaceFunctions)
{
FunctionTypePointer const& functionType = it.second;
m_context << callDataUnpackerEntryPoints.at(it.first);
eth::AssemblyItem returnTag = m_context.pushNewTag();
appendCalldataUnpacker(functionType->getParameterTypes());
m_context.appendJumpTo(m_context.getFunctionEntryLabel(it.second->getDeclaration()));
m_context << returnTag;
appendReturnValuePacker(functionType->getReturnParameterTypes());
}
}
void Compiler::appendCalldataUnpacker(TypePointers const& _typeParameters, bool _fromMemory)
{
// We do not check the calldata size, everything is zero-padded.
unsigned offset(CompilerUtils::dataStartOffset);
bool const c_padToWords = true;
unsigned dynamicParameterCount = 0;
for (TypePointer const& type: _typeParameters)
if (type->isDynamicallySized())
dynamicParameterCount++;
offset += dynamicParameterCount * 32;
unsigned currentDynamicParameter = 0;
for (TypePointer const& type: _typeParameters)
if (type->isDynamicallySized())
{
// value on stack: [calldata_offset] (only if we are already in dynamic mode)
if (currentDynamicParameter == 0)
// switch from static to dynamic
m_context << u256(offset);
// retrieve length
CompilerUtils(m_context).loadFromMemory(
CompilerUtils::dataStartOffset + currentDynamicParameter * 32,
IntegerType(256), !_fromMemory, c_padToWords);
// stack: offset length
// add 32-byte padding to copy of length
m_context << u256(32) << eth::Instruction::DUP1 << u256(31)
<< eth::Instruction::DUP4 << eth::Instruction::ADD
<< eth::Instruction::DIV << eth::Instruction::MUL;
// stack: offset length padded_length
m_context << eth::Instruction::DUP3 << eth::Instruction::ADD;
currentDynamicParameter++;
// stack: offset length next_calldata_offset
}
else if (currentDynamicParameter == 0)
// we can still use static load
offset += CompilerUtils(m_context).loadFromMemory(offset, *type, !_fromMemory, c_padToWords);
else
CompilerUtils(m_context).loadFromMemoryDynamic(*type, !_fromMemory, c_padToWords);
if (dynamicParameterCount > 0)
m_context << eth::Instruction::POP;
}
void Compiler::appendReturnValuePacker(TypePointers const& _typeParameters)
{
//@todo this can be also done more efficiently
unsigned dataOffset = 0;
unsigned stackDepth = 0;
for (TypePointer const& type: _typeParameters)
stackDepth += type->getSizeOnStack();
for (TypePointer const& type: _typeParameters)
{
CompilerUtils(m_context).copyToStackTop(stackDepth, *type);
ExpressionCompiler::appendTypeConversion(m_context, *type, *type, true);
bool const c_padToWords = true;
dataOffset += CompilerUtils(m_context).storeInMemory(dataOffset, *type, c_padToWords);
stackDepth -= type->getSizeOnStack();
}
// note that the stack is not cleaned up here
m_context << u256(dataOffset) << u256(0) << eth::Instruction::RETURN;
}
void Compiler::registerStateVariables(ContractDefinition const& _contract)
{
for (ContractDefinition const* contract: boost::adaptors::reverse(_contract.getLinearizedBaseContracts()))
for (ASTPointer<VariableDeclaration> const& variable: contract->getStateVariables())
m_context.addStateVariable(*variable);
}
bool Compiler::visit(VariableDeclaration const& _variableDeclaration)
{
solAssert(_variableDeclaration.isStateVariable(), "Compiler visit to non-state variable declaration.");
m_context.startFunction(_variableDeclaration);
m_breakTags.clear();
m_continueTags.clear();
m_context << m_context.getFunctionEntryLabel(_variableDeclaration);
ExpressionCompiler::appendStateVariableAccessor(m_context, _variableDeclaration);
return false;
}
bool Compiler::visit(FunctionDefinition const& _function)
{
//@todo to simplify this, the calling convention could by changed such that
// caller puts: [retarg0] ... [retargm] [return address] [arg0] ... [argn]
// although note that this reduces the size of the visible stack
m_context.startFunction(_function);
m_returnTag = m_context.newTag();
m_breakTags.clear();
m_continueTags.clear();
m_stackCleanupForReturn = 0;
m_currentFunction = &_function;
m_modifierDepth = 0;
// stack upon entry: [return address] [arg0] [arg1] ... [argn]
// reserve additional slots: [retarg0] ... [retargm] [localvar0] ... [localvarp]
unsigned parametersSize = CompilerUtils::getSizeOnStack(_function.getParameters());
m_context.adjustStackOffset(parametersSize);
for (ASTPointer<VariableDeclaration const> const& variable: _function.getParameters())
{
m_context.addVariable(*variable, parametersSize);
parametersSize -= variable->getType()->getSizeOnStack();
}
for (ASTPointer<VariableDeclaration const> const& variable: _function.getReturnParameters())
m_context.addAndInitializeVariable(*variable);
for (VariableDeclaration const* localVariable: _function.getLocalVariables())
m_context.addAndInitializeVariable(*localVariable);
appendModifierOrFunctionCode();
m_context << m_returnTag;
// Now we need to re-shuffle the stack. For this we keep a record of the stack layout
// that shows the target positions of the elements, where "-1" denotes that this element needs
// to be removed from the stack.
// Note that the fact that the return arguments are of increasing index is vital for this
// algorithm to work.
unsigned const c_argumentsSize = CompilerUtils::getSizeOnStack(_function.getParameters());
unsigned const c_returnValuesSize = CompilerUtils::getSizeOnStack(_function.getReturnParameters());
unsigned const c_localVariablesSize = CompilerUtils::getSizeOnStack(_function.getLocalVariables());
vector<int> stackLayout;
stackLayout.push_back(c_returnValuesSize); // target of return address
stackLayout += vector<int>(c_argumentsSize, -1); // discard all arguments
for (unsigned i = 0; i < c_returnValuesSize; ++i)
stackLayout.push_back(i);
stackLayout += vector<int>(c_localVariablesSize, -1);
while (stackLayout.back() != int(stackLayout.size() - 1))
if (stackLayout.back() < 0)
{
m_context << eth::Instruction::POP;
stackLayout.pop_back();
}
else
{
m_context << eth::swapInstruction(stackLayout.size() - stackLayout.back() - 1);
swap(stackLayout[stackLayout.back()], stackLayout.back());
}
//@todo assert that everything is in place now
m_context << eth::Instruction::JUMP;
return false;
}
bool Compiler::visit(IfStatement const& _ifStatement)
{
compileExpression(_ifStatement.getCondition());
eth::AssemblyItem trueTag = m_context.appendConditionalJump();
if (_ifStatement.getFalseStatement())
_ifStatement.getFalseStatement()->accept(*this);
eth::AssemblyItem endTag = m_context.appendJumpToNew();
m_context << trueTag;
_ifStatement.getTrueStatement().accept(*this);
m_context << endTag;
return false;
}
bool Compiler::visit(WhileStatement const& _whileStatement)
{
eth::AssemblyItem loopStart = m_context.newTag();
eth::AssemblyItem loopEnd = m_context.newTag();
m_continueTags.push_back(loopStart);
m_breakTags.push_back(loopEnd);
m_context << loopStart;
compileExpression(_whileStatement.getCondition());
m_context << eth::Instruction::ISZERO;
m_context.appendConditionalJumpTo(loopEnd);
_whileStatement.getBody().accept(*this);
m_context.appendJumpTo(loopStart);
m_context << loopEnd;
m_continueTags.pop_back();
m_breakTags.pop_back();
return false;
}
bool Compiler::visit(ForStatement const& _forStatement)
{
eth::AssemblyItem loopStart = m_context.newTag();
eth::AssemblyItem loopEnd = m_context.newTag();
m_continueTags.push_back(loopStart);
m_breakTags.push_back(loopEnd);
if (_forStatement.getInitializationExpression())
_forStatement.getInitializationExpression()->accept(*this);
m_context << loopStart;
// if there is no terminating condition in for, default is to always be true
if (_forStatement.getCondition())
{
compileExpression(*_forStatement.getCondition());
m_context << eth::Instruction::ISZERO;
m_context.appendConditionalJumpTo(loopEnd);
}
_forStatement.getBody().accept(*this);
// for's loop expression if existing
if (_forStatement.getLoopExpression())
_forStatement.getLoopExpression()->accept(*this);
m_context.appendJumpTo(loopStart);
m_context << loopEnd;
m_continueTags.pop_back();
m_breakTags.pop_back();
return false;
}
bool Compiler::visit(Continue const&)
{
if (!m_continueTags.empty())
m_context.appendJumpTo(m_continueTags.back());
return false;
}
bool Compiler::visit(Break const&)
{
if (!m_breakTags.empty())
m_context.appendJumpTo(m_breakTags.back());
return false;
}
bool Compiler::visit(Return const& _return)
{
//@todo modifications are needed to make this work with functions returning multiple values
if (Expression const* expression = _return.getExpression())
{
solAssert(_return.getFunctionReturnParameters(), "Invalid return parameters pointer.");
VariableDeclaration const& firstVariable = *_return.getFunctionReturnParameters()->getParameters().front();
compileExpression(*expression, firstVariable.getType());
CompilerUtils(m_context).moveToStackVariable(firstVariable);
}
for (unsigned i = 0; i < m_stackCleanupForReturn; ++i)
m_context << eth::Instruction::POP;
m_context.appendJumpTo(m_returnTag);
m_context.adjustStackOffset(m_stackCleanupForReturn);
return false;
}
bool Compiler::visit(VariableDefinition const& _variableDefinition)
{
if (Expression const* expression = _variableDefinition.getExpression())
{
compileExpression(*expression, _variableDefinition.getDeclaration().getType());
CompilerUtils(m_context).moveToStackVariable(_variableDefinition.getDeclaration());
}
return false;
}
bool Compiler::visit(ExpressionStatement const& _expressionStatement)
{
Expression const& expression = _expressionStatement.getExpression();
compileExpression(expression);
CompilerUtils(m_context).popStackElement(*expression.getType());
return false;
}
bool Compiler::visit(PlaceholderStatement const&)
{
++m_modifierDepth;
appendModifierOrFunctionCode();
--m_modifierDepth;
return true;
}
void Compiler::appendModifierOrFunctionCode()
{
solAssert(m_currentFunction, "");
if (m_modifierDepth >= m_currentFunction->getModifiers().size())
m_currentFunction->getBody().accept(*this);
else
{
ASTPointer<ModifierInvocation> const& modifierInvocation = m_currentFunction->getModifiers()[m_modifierDepth];
ModifierDefinition const& modifier = m_context.getFunctionModifier(modifierInvocation->getName()->getName());
solAssert(modifier.getParameters().size() == modifierInvocation->getArguments().size(), "");
for (unsigned i = 0; i < modifier.getParameters().size(); ++i)
{
m_context.addVariable(*modifier.getParameters()[i]);
compileExpression(*modifierInvocation->getArguments()[i],
modifier.getParameters()[i]->getType());
}
for (VariableDeclaration const* localVariable: modifier.getLocalVariables())
m_context.addAndInitializeVariable(*localVariable);
unsigned const c_stackSurplus = CompilerUtils::getSizeOnStack(modifier.getParameters()) +
CompilerUtils::getSizeOnStack(modifier.getLocalVariables());
m_stackCleanupForReturn += c_stackSurplus;
modifier.getBody().accept(*this);
for (unsigned i = 0; i < c_stackSurplus; ++i)
m_context << eth::Instruction::POP;
m_stackCleanupForReturn -= c_stackSurplus;
}
}
void Compiler::compileExpression(Expression const& _expression, TypePointer const& _targetType)
{
ExpressionCompiler::compileExpression(m_context, _expression, m_optimize);
if (_targetType)
ExpressionCompiler::appendTypeConversion(m_context, *_expression.getType(), *_targetType);
}
}
}

93
Compiler.h
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/*
This file is part of cpp-ethereum.
cpp-ethereum is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
cpp-ethereum is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @author Christian <c@ethdev.com>
* @date 2014
* Solidity AST to EVM bytecode compiler.
*/
#pragma once
#include <ostream>
#include <functional>
#include <libsolidity/ASTVisitor.h>
#include <libsolidity/CompilerContext.h>
namespace dev {
namespace solidity {
class Compiler: private ASTConstVisitor
{
public:
explicit Compiler(bool _optimize = false): m_optimize(_optimize), m_context(),
m_returnTag(m_context.newTag()) {}
void compileContract(ContractDefinition const& _contract,
std::map<ContractDefinition const*, bytes const*> const& _contracts);
bytes getAssembledBytecode() { return m_context.getAssembledBytecode(m_optimize); }
bytes getRuntimeBytecode() { return m_runtimeContext.getAssembledBytecode(m_optimize);}
void streamAssembly(std::ostream& _stream) const { m_context.streamAssembly(_stream); }
private:
/// Registers the non-function objects inside the contract with the context.
void initializeContext(ContractDefinition const& _contract,
std::map<ContractDefinition const*, bytes const*> const& _contracts);
/// Adds the code that is run at creation time. Should be run after exchanging the run-time context
/// with a new and initialized context. Adds the constructor code.
void packIntoContractCreator(ContractDefinition const& _contract, CompilerContext const& _runtimeContext);
void appendBaseConstructorCall(FunctionDefinition const& _constructor,
std::vector<ASTPointer<Expression>> const& _arguments);
void appendConstructorCall(FunctionDefinition const& _constructor);
void appendFunctionSelector(ContractDefinition const& _contract);
/// Creates code that unpacks the arguments for the given function represented by a vector of TypePointers.
/// From memory if @a _fromMemory is true, otherwise from call data.
void appendCalldataUnpacker(TypePointers const& _typeParameters, bool _fromMemory = false);
void appendReturnValuePacker(TypePointers const& _typeParameters);
void registerStateVariables(ContractDefinition const& _contract);
virtual bool visit(VariableDeclaration const& _variableDeclaration) override;
virtual bool visit(FunctionDefinition const& _function) override;
virtual bool visit(IfStatement const& _ifStatement) override;
virtual bool visit(WhileStatement const& _whileStatement) override;
virtual bool visit(ForStatement const& _forStatement) override;
virtual bool visit(Continue const& _continue) override;
virtual bool visit(Break const& _break) override;
virtual bool visit(Return const& _return) override;
virtual bool visit(VariableDefinition const& _variableDefinition) override;
virtual bool visit(ExpressionStatement const& _expressionStatement) override;
virtual bool visit(PlaceholderStatement const&) override;
/// Appends one layer of function modifier code of the current function, or the function
/// body itself if the last modifier was reached.
void appendModifierOrFunctionCode();
void compileExpression(Expression const& _expression, TypePointer const& _targetType = TypePointer());
bool const m_optimize;
CompilerContext m_context;
CompilerContext m_runtimeContext;
std::vector<eth::AssemblyItem> m_breakTags; ///< tag to jump to for a "break" statement
std::vector<eth::AssemblyItem> m_continueTags; ///< tag to jump to for a "continue" statement
eth::AssemblyItem m_returnTag; ///< tag to jump to for a "return" statement
unsigned m_modifierDepth = 0;
FunctionDefinition const* m_currentFunction;
unsigned m_stackCleanupForReturn; ///< this number of stack elements need to be removed before jump to m_returnTag
};
}
}

165
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/*
This file is part of cpp-ethereum.
cpp-ethereum is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
cpp-ethereum is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @author Christian <c@ethdev.com>
* @date 2014
* Utilities for the solidity compiler.
*/
#include <utility>
#include <numeric>
#include <libsolidity/AST.h>
#include <libsolidity/Compiler.h>
using namespace std;
namespace dev
{
namespace solidity
{
void CompilerContext::addMagicGlobal(MagicVariableDeclaration const& _declaration)
{
m_magicGlobals.insert(&_declaration);
}
void CompilerContext::addStateVariable(VariableDeclaration const& _declaration)
{
m_stateVariables[&_declaration] = m_stateVariablesSize;
m_stateVariablesSize += _declaration.getType()->getStorageSize();
}
void CompilerContext::startFunction(Declaration const& _function)
{
m_functionsWithCode.insert(&_function);
m_localVariables.clear();
m_asm.setDeposit(0);
*this << getFunctionEntryLabel(_function);
}
void CompilerContext::addVariable(VariableDeclaration const& _declaration,
unsigned _offsetToCurrent)
{
solAssert(m_asm.deposit() >= 0 && unsigned(m_asm.deposit()) >= _offsetToCurrent, "");
m_localVariables[&_declaration] = unsigned(m_asm.deposit()) - _offsetToCurrent;
}
void CompilerContext::addAndInitializeVariable(VariableDeclaration const& _declaration)
{
addVariable(_declaration);
int const size = _declaration.getType()->getSizeOnStack();
for (int i = 0; i < size; ++i)
*this << u256(0);
}
bytes const& CompilerContext::getCompiledContract(const ContractDefinition& _contract) const
{
auto ret = m_compiledContracts.find(&_contract);
solAssert(ret != m_compiledContracts.end(), "Compiled contract not found.");
return *ret->second;
}
bool CompilerContext::isLocalVariable(Declaration const* _declaration) const
{
return !!m_localVariables.count(_declaration);
}
eth::AssemblyItem CompilerContext::getFunctionEntryLabel(Declaration const& _declaration)
{
auto res = m_functionEntryLabels.find(&_declaration);
if (res == m_functionEntryLabels.end())
{
eth::AssemblyItem tag(m_asm.newTag());
m_functionEntryLabels.insert(make_pair(&_declaration, tag));
return tag.tag();
}
else
return res->second.tag();
}
eth::AssemblyItem CompilerContext::getVirtualFunctionEntryLabel(FunctionDefinition const& _function)
{
solAssert(!m_inheritanceHierarchy.empty(), "No inheritance hierarchy set.");
for (ContractDefinition const* contract: m_inheritanceHierarchy)
for (ASTPointer<FunctionDefinition> const& function: contract->getDefinedFunctions())
if (!function->isConstructor() && function->getName() == _function.getName())
return getFunctionEntryLabel(*function);
solAssert(false, "Virtual function " + _function.getName() + " not found.");
return m_asm.newTag(); // not reached
}
eth::AssemblyItem CompilerContext::getSuperFunctionEntryLabel(string const& _name, ContractDefinition const& _base)
{
// search for first contract after _base
solAssert(!m_inheritanceHierarchy.empty(), "No inheritance hierarchy set.");
auto it = find(m_inheritanceHierarchy.begin(), m_inheritanceHierarchy.end(), &_base);
solAssert(it != m_inheritanceHierarchy.end(), "Base not found in inheritance hierarchy.");
for (++it; it != m_inheritanceHierarchy.end(); ++it)
for (ASTPointer<FunctionDefinition> const& function: (*it)->getDefinedFunctions())
if (!function->isConstructor() && function->getName() == _name)
return getFunctionEntryLabel(*function);
solAssert(false, "Super function " + _name + " not found.");
return m_asm.newTag(); // not reached
}
set<Declaration const*> CompilerContext::getFunctionsWithoutCode()
{
set<Declaration const*> functions;
for (auto const& it: m_functionEntryLabels)
if (m_functionsWithCode.count(it.first) == 0)
functions.insert(it.first);
return move(functions);
}
ModifierDefinition const& CompilerContext::getFunctionModifier(string const& _name) const
{
solAssert(!m_inheritanceHierarchy.empty(), "No inheritance hierarchy set.");
for (ContractDefinition const* contract: m_inheritanceHierarchy)
for (ASTPointer<ModifierDefinition> const& modifier: contract->getFunctionModifiers())
if (modifier->getName() == _name)
return *modifier.get();
BOOST_THROW_EXCEPTION(InternalCompilerError()
<< errinfo_comment("Function modifier " + _name + " not found."));
}
unsigned CompilerContext::getBaseStackOffsetOfVariable(Declaration const& _declaration) const
{
auto res = m_localVariables.find(&_declaration);
solAssert(res != m_localVariables.end(), "Variable not found on stack.");
return res->second;
}
unsigned CompilerContext::baseToCurrentStackOffset(unsigned _baseOffset) const
{
return m_asm.deposit() - _baseOffset - 1;
}
unsigned CompilerContext::currentToBaseStackOffset(unsigned _offset) const
{
return m_asm.deposit() - _offset - 1;
}
u256 CompilerContext::getStorageLocationOfVariable(const Declaration& _declaration) const
{
auto it = m_stateVariables.find(&_declaration);
solAssert(it != m_stateVariables.end(), "Variable not found in storage.");
return it->second;
}
}
}

135
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@ -1,135 +0,0 @@
/*
This file is part of cpp-ethereum.
cpp-ethereum is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
cpp-ethereum is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @author Christian <c@ethdev.com>
* @date 2014
* Utilities for the solidity compiler.
*/
#pragma once
#include <ostream>
#include <libevmcore/Instruction.h>
#include <libevmcore/Assembly.h>
#include <libsolidity/ASTForward.h>
#include <libsolidity/Types.h>
namespace dev {
namespace solidity {
/**
* Context to be shared by all units that compile the same contract.
* It stores the generated bytecode and the position of identifiers in memory and on the stack.
*/
class CompilerContext
{
public:
void addMagicGlobal(MagicVariableDeclaration const& _declaration);
void addStateVariable(VariableDeclaration const& _declaration);
void addVariable(VariableDeclaration const& _declaration, unsigned _offsetToCurrent = 0);
void addAndInitializeVariable(VariableDeclaration const& _declaration);
void setCompiledContracts(std::map<ContractDefinition const*, bytes const*> const& _contracts) { m_compiledContracts = _contracts; }
bytes const& getCompiledContract(ContractDefinition const& _contract) const;
void adjustStackOffset(int _adjustment) { m_asm.adjustDeposit(_adjustment); }
unsigned getStackHeight() { solAssert(m_asm.deposit() >= 0, ""); return unsigned(m_asm.deposit()); }
bool isMagicGlobal(Declaration const* _declaration) const { return m_magicGlobals.count(_declaration) != 0; }
bool isLocalVariable(Declaration const* _declaration) const;
bool isStateVariable(Declaration const* _declaration) const { return m_stateVariables.count(_declaration) != 0; }
eth::AssemblyItem getFunctionEntryLabel(Declaration const& _declaration);
void setInheritanceHierarchy(std::vector<ContractDefinition const*> const& _hierarchy) { m_inheritanceHierarchy = _hierarchy; }
/// @returns the entry label of the given function and takes overrides into account.
eth::AssemblyItem getVirtualFunctionEntryLabel(FunctionDefinition const& _function);
/// @returns the entry label of function with the given name from the most derived class just
/// above _base in the current inheritance hierarchy.
eth::AssemblyItem getSuperFunctionEntryLabel(std::string const& _name, ContractDefinition const& _base);
/// @returns the set of functions for which we still need to generate code
std::set<Declaration const*> getFunctionsWithoutCode();
/// Resets function specific members, inserts the function entry label and marks the function
/// as "having code".
void startFunction(Declaration const& _function);
ModifierDefinition const& getFunctionModifier(std::string const& _name) const;
/// Returns the distance of the given local variable from the bottom of the stack (of the current function).
unsigned getBaseStackOffsetOfVariable(Declaration const& _declaration) const;
/// If supplied by a value returned by @ref getBaseStackOffsetOfVariable(variable), returns
/// the distance of that variable from the current top of the stack.
unsigned baseToCurrentStackOffset(unsigned _baseOffset) const;
/// Converts an offset relative to the current stack height to a value that can be used later
/// with baseToCurrentStackOffset to point to the same stack element.
unsigned currentToBaseStackOffset(unsigned _offset) const;
u256 getStorageLocationOfVariable(Declaration const& _declaration) const;
/// Appends a JUMPI instruction to a new tag and @returns the tag
eth::AssemblyItem appendConditionalJump() { return m_asm.appendJumpI().tag(); }
/// Appends a JUMPI instruction to @a _tag
CompilerContext& appendConditionalJumpTo(eth::AssemblyItem const& _tag) { m_asm.appendJumpI(_tag); return *this; }
/// Appends a JUMP to a new tag and @returns the tag
eth::AssemblyItem appendJumpToNew() { return m_asm.appendJump().tag(); }
/// Appends a JUMP to a tag already on the stack
CompilerContext& appendJump() { return *this << eth::Instruction::JUMP; }
/// Appends a JUMP to a specific tag
CompilerContext& appendJumpTo(eth::AssemblyItem const& _tag) { m_asm.appendJump(_tag); return *this; }
/// Appends pushing of a new tag and @returns the new tag.
eth::AssemblyItem pushNewTag() { return m_asm.append(m_asm.newPushTag()).tag(); }
/// @returns a new tag without pushing any opcodes or data
eth::AssemblyItem newTag() { return m_asm.newTag(); }
/// Adds a subroutine to the code (in the data section) and pushes its size (via a tag)
/// on the stack. @returns the assembly item corresponding to the pushed subroutine, i.e. its offset.
eth::AssemblyItem addSubroutine(eth::Assembly const& _assembly) { return m_asm.appendSubSize(_assembly); }
/// Pushes the size of the final program
void appendProgramSize() { return m_asm.appendProgramSize(); }
/// Adds data to the data section, pushes a reference to the stack
eth::AssemblyItem appendData(bytes const& _data) { return m_asm.append(_data); }
/// Append elements to the current instruction list and adjust @a m_stackOffset.
CompilerContext& operator<<(eth::AssemblyItem const& _item) { m_asm.append(_item); return *this; }
CompilerContext& operator<<(eth::Instruction _instruction) { m_asm.append(_instruction); return *this; }
CompilerContext& operator<<(u256 const& _value) { m_asm.append(_value); return *this; }
CompilerContext& operator<<(bytes const& _data) { m_asm.append(_data); return *this; }
eth::Assembly const& getAssembly() const { return m_asm; }
void streamAssembly(std::ostream& _stream) const { _stream << m_asm; }
bytes getAssembledBytecode(bool _optimize = false) { return m_asm.optimise(_optimize).assemble(); }
private:
eth::Assembly m_asm;
/// Magic global variables like msg, tx or this, distinguished by type.
std::set<Declaration const*> m_magicGlobals;
/// Other already compiled contracts to be used in contract creation calls.
std::map<ContractDefinition const*, bytes const*> m_compiledContracts;
/// Size of the state variables, offset of next variable to be added.
u256 m_stateVariablesSize = 0;
/// Storage offsets of state variables
std::map<Declaration const*, u256> m_stateVariables;
/// Offsets of local variables on the stack (relative to stack base).
std::map<Declaration const*, unsigned> m_localVariables;
/// Labels pointing to the entry points of functions.
std::map<Declaration const*, eth::AssemblyItem> m_functionEntryLabels;
/// Set of functions for which we did not yet generate code.
std::set<Declaration const*> m_functionsWithCode;
/// List of current inheritance hierarchy from derived to base.
std::vector<ContractDefinition const*> m_inheritanceHierarchy;
};
}
}

370
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@ -1,370 +0,0 @@
/*
This file is part of cpp-ethereum.
cpp-ethereum is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
cpp-ethereum is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @author Christian <c@ethdev.com>
* @author Gav Wood <g@ethdev.com>
* @date 2014
* Full-stack compiler that converts a source code string to bytecode.
*/
#include <boost/algorithm/string.hpp>
#include <libsolidity/AST.h>
#include <libsolidity/Scanner.h>
#include <libsolidity/Parser.h>
#include <libsolidity/GlobalContext.h>
#include <libsolidity/NameAndTypeResolver.h>
#include <libsolidity/Compiler.h>
#include <libsolidity/CompilerStack.h>
#include <libsolidity/InterfaceHandler.h>
#include <libdevcrypto/SHA3.h>
using namespace std;
namespace dev
{
namespace solidity
{
const map<string, string> StandardSources = map<string, string>{
{"coin", R"(import "CoinReg";import "Config";import "configUser";contract coin is configUser{function coin(string3 name, uint denom) {CoinReg(Config(configAddr()).lookup(3)).register(name, denom);}})"},
{"Coin", R"(contract Coin{function isApprovedFor(address _target,address _proxy)constant returns(bool _r){}function isApproved(address _proxy)constant returns(bool _r){}function sendCoinFrom(address _from,uint256 _val,address _to){}function coinBalanceOf(address _a)constant returns(uint256 _r){}function sendCoin(uint256 _val,address _to){}function coinBalance()constant returns(uint256 _r){}function approve(address _a){}})"},
{"CoinReg", R"(contract CoinReg{function count()constant returns(uint256 r){}function info(uint256 i)constant returns(address addr,string3 name,uint256 denom){}function register(string3 name,uint256 denom){}function unregister(){}})"},
{"configUser", R"(contract configUser{function configAddr()constant returns(address a){ return 0xc6d9d2cd449a754c494264e1809c50e34d64562b;}})"},
{"Config", R"(contract Config{function lookup(uint256 service)constant returns(address a){}function kill(){}function unregister(uint256 id){}function register(uint256 id,address service){}})"},
{"mortal", R"(import "owned";contract mortal is owned {function kill() { if (msg.sender == owner) suicide(owner); }})"},
{"named", R"(import "Config";import "NameReg";import "configUser";contract named is configUser {function named(string32 name) {NameReg(Config(configAddr()).lookup(1)).register(name);}})"},
{"NameReg", R"(contract NameReg{function register(string32 name){}function addressOf(string32 name)constant returns(address addr){}function unregister(){}function nameOf(address addr)constant returns(string32 name){}})"},
{"owned", R"(contract owned{function owned(){owner = msg.sender;}modifier onlyowner(){if(msg.sender==owner)_}address owner;})"},
{"service", R"(import "Config";import "configUser";contract service is configUser{function service(uint _n){Config(configAddr()).register(_n, this);}})"},
{"std", R"(import "owned";import "mortal";import "Config";import "configUser";import "NameReg";import "named";)"}
};
CompilerStack::CompilerStack(bool _addStandardSources):
m_addStandardSources(_addStandardSources), m_parseSuccessful(false)
{
if (m_addStandardSources)
addSources(StandardSources);
}
bool CompilerStack::addSource(string const& _name, string const& _content)
{
bool existed = m_sources.count(_name) != 0;
reset(true);
m_sources[_name].scanner = make_shared<Scanner>(CharStream(expanded(_content)), _name);
return existed;
}
void CompilerStack::setSource(string const& _sourceCode)
{
reset();
addSource("", expanded(_sourceCode));
}
void CompilerStack::parse()
{
for (auto& sourcePair: m_sources)
{
sourcePair.second.scanner->reset();
sourcePair.second.ast = Parser().parse(sourcePair.second.scanner);
}
resolveImports();
m_globalContext = make_shared<GlobalContext>();
NameAndTypeResolver resolver(m_globalContext->getDeclarations());
for (Source const* source: m_sourceOrder)
resolver.registerDeclarations(*source->ast);
for (Source const* source: m_sourceOrder)
for (ASTPointer<ASTNode> const& node: source->ast->getNodes())
if (ContractDefinition* contract = dynamic_cast<ContractDefinition*>(node.get()))
{
m_globalContext->setCurrentContract(*contract);
resolver.updateDeclaration(*m_globalContext->getCurrentThis());
resolver.updateDeclaration(*m_globalContext->getCurrentSuper());
resolver.resolveNamesAndTypes(*contract);
m_contracts[contract->getName()].contract = contract;
}
for (Source const* source: m_sourceOrder)
for (ASTPointer<ASTNode> const& node: source->ast->getNodes())
if (ContractDefinition* contract = dynamic_cast<ContractDefinition*>(node.get()))
{
m_globalContext->setCurrentContract(*contract);
resolver.updateDeclaration(*m_globalContext->getCurrentThis());
resolver.checkTypeRequirements(*contract);
m_contracts[contract->getName()].contract = contract;
}
m_parseSuccessful = true;
}
void CompilerStack::parse(string const& _sourceCode)
{
setSource(_sourceCode);
parse();
}
vector<string> CompilerStack::getContractNames() const
{
if (!m_parseSuccessful)
BOOST_THROW_EXCEPTION(CompilerError() << errinfo_comment("Parsing was not successful."));
vector<string> contractNames;
for (auto const& contract: m_contracts)
contractNames.push_back(contract.first);
return contractNames;
}
////// BEGIN: TEMPORARY ONLY
///
/// NOTE: THIS INVALIDATES SOURCE POINTERS AND CAN CRASH THE COMPILER
///
/// remove once import works properly and we have genesis contracts
string CompilerStack::expanded(string const& _sourceCode)
{
const map<string, string> c_standardSources = map<string, string>{
{ "Config", "contract Config{function lookup(uint256 service)constant returns(address a){}function kill(){}function unregister(uint256 id){}function register(uint256 id,address service){}}" },
{ "Coin", "contract Coin{function isApprovedFor(address _target,address _proxy)constant returns(bool _r){}function isApproved(address _proxy)constant returns(bool _r){}function sendCoinFrom(address _from,uint256 _val,address _to){}function coinBalanceOf(address _a)constant returns(uint256 _r){}function sendCoin(uint256 _val,address _to){}function coinBalance()constant returns(uint256 _r){}function approve(address _a){}}"},
{ "CoinReg", "contract CoinReg{function count()constant returns(uint256 r){}function info(uint256 i)constant returns(address addr,string3 name,uint256 denom){}function register(string3 name,uint256 denom){}function unregister(){}}" },
{ "coin", "#require CoinReg\ncontract coin {function coin(string3 name, uint denom) {CoinReg(Config().lookup(3)).register(name, denom);}}" },
{ "service", "#require Config\ncontract service{function service(uint _n){Config().register(_n, this);}}" },
{ "owned", "contract owned{function owned(){owner = msg.sender;}modifier onlyowner(){if(msg.sender==owner)_}address owner;}" },
{ "mortal", "#require owned\ncontract mortal is owned {function kill() { if (msg.sender == owner) suicide(owner); }}" },
{ "NameReg", "contract NameReg{function register(string32 name){}function addressOf(string32 name)constant returns(address addr){}function unregister(){}function nameOf(address addr)constant returns(string32 name){}}" },
{ "named", "#require Config NameReg\ncontract named {function named(string32 name) {NameReg(Config().lookup(1)).register(name);}}" },
{ "std", "#require owned mortal Config NameReg named" },
};
string sub;
set<string> got;
function<string(string const&)> localExpanded;
localExpanded = [&](string const& s) -> string
{
string ret = s;
for (size_t p = 0; p != string::npos;)
if ((p = ret.find("#require ")) != string::npos)
{
string n = ret.substr(p + 9, ret.find_first_of('\n', p + 9) - p - 9);
ret.replace(p, n.size() + 9, "");
vector<string> rs;
boost::split(rs, n, boost::is_any_of(" \t,"), boost::token_compress_on);
for (auto const& r: rs)
if (!got.count(r))
{
if (c_standardSources.count(r))
sub.append("\n" + localExpanded(c_standardSources.at(r)) + "\n");
got.insert(r);
}
}
// TODO: remove once we have genesis contracts.
else if ((p = ret.find("Config()")) != string::npos)
ret.replace(p, 8, "Config(0xc6d9d2cd449a754c494264e1809c50e34d64562b)");
return ret;
};
return sub + localExpanded(_sourceCode);
}
////// END: TEMPORARY ONLY
void CompilerStack::compile(bool _optimize)
{
if (!m_parseSuccessful)
parse();
map<ContractDefinition const*, bytes const*> contractBytecode;
for (Source const* source: m_sourceOrder)
for (ASTPointer<ASTNode> const& node: source->ast->getNodes())
if (ContractDefinition* contract = dynamic_cast<ContractDefinition*>(node.get()))
{
shared_ptr<Compiler> compiler = make_shared<Compiler>(_optimize);
compiler->compileContract(*contract, contractBytecode);
Contract& compiledContract = m_contracts[contract->getName()];
compiledContract.bytecode = compiler->getAssembledBytecode();
compiledContract.runtimeBytecode = compiler->getRuntimeBytecode();
compiledContract.compiler = move(compiler);
contractBytecode[compiledContract.contract] = &compiledContract.bytecode;
}
}
bytes const& CompilerStack::compile(string const& _sourceCode, bool _optimize)
{
parse(_sourceCode);
compile(_optimize);
return getBytecode();
}
bytes const& CompilerStack::getBytecode(string const& _contractName) const
{
return getContract(_contractName).bytecode;
}
bytes const& CompilerStack::getRuntimeBytecode(string const& _contractName) const
{
return getContract(_contractName).runtimeBytecode;
}
dev::h256 CompilerStack::getContractCodeHash(string const& _contractName) const
{
return dev::sha3(getRuntimeBytecode(_contractName));
}
void CompilerStack::streamAssembly(ostream& _outStream, string const& _contractName) const
{
getContract(_contractName).compiler->streamAssembly(_outStream);
}
string const& CompilerStack::getInterface(string const& _contractName) const
{
return getMetadata(_contractName, DocumentationType::ABIInterface);
}
string const& CompilerStack::getSolidityInterface(string const& _contractName) const
{
return getMetadata(_contractName, DocumentationType::ABISolidityInterface);
}
string const& CompilerStack::getMetadata(string const& _contractName, DocumentationType _type) const
{
if (!m_parseSuccessful)
BOOST_THROW_EXCEPTION(CompilerError() << errinfo_comment("Parsing was not successful."));
Contract const& contract = getContract(_contractName);
std::unique_ptr<string const>* doc;
switch (_type)
{
case DocumentationType::NatspecUser:
doc = &contract.userDocumentation;
break;
case DocumentationType::NatspecDev:
doc = &contract.devDocumentation;
break;
case DocumentationType::ABIInterface:
doc = &contract.interface;
break;
case DocumentationType::ABISolidityInterface:
doc = &contract.solidityInterface;
break;
default:
BOOST_THROW_EXCEPTION(InternalCompilerError() << errinfo_comment("Illegal documentation type."));
}
if (!*doc)
*doc = contract.interfaceHandler->getDocumentation(*contract.contract, _type);
return *(*doc);
}
Scanner const& CompilerStack::getScanner(string const& _sourceName) const
{
return *getSource(_sourceName).scanner;
}
SourceUnit const& CompilerStack::getAST(string const& _sourceName) const
{
return *getSource(_sourceName).ast;
}
ContractDefinition const& CompilerStack::getContractDefinition(string const& _contractName) const
{
return *getContract(_contractName).contract;
}
bytes CompilerStack::staticCompile(std::string const& _sourceCode, bool _optimize)
{
CompilerStack stack;
return stack.compile(_sourceCode, _optimize);
}
void CompilerStack::reset(bool _keepSources)
{
m_parseSuccessful = false;
if (_keepSources)
for (auto sourcePair: m_sources)
sourcePair.second.reset();
else
{
m_sources.clear();
if (m_addStandardSources)
addSources(StandardSources);
}
m_globalContext.reset();
m_sourceOrder.clear();
m_contracts.clear();
}
void CompilerStack::resolveImports()
{
// topological sorting (depth first search) of the import graph, cutting potential cycles
vector<Source const*> sourceOrder;
set<Source const*> sourcesSeen;
function<void(Source const*)> toposort = [&](Source const* _source)
{
if (sourcesSeen.count(_source))
return;
sourcesSeen.insert(_source);
for (ASTPointer<ASTNode> const& node: _source->ast->getNodes())
if (ImportDirective const* import = dynamic_cast<ImportDirective*>(node.get()))
{
string const& id = import->getIdentifier();
if (!m_sources.count(id))
BOOST_THROW_EXCEPTION(ParserError()
<< errinfo_sourceLocation(import->getLocation())
<< errinfo_comment("Source not found."));
toposort(&m_sources[id]);
}
sourceOrder.push_back(_source);
};
for (auto const& sourcePair: m_sources)
toposort(&sourcePair.second);
swap(m_sourceOrder, sourceOrder);
}
std::string CompilerStack::defaultContractName() const
{
return getContract("").contract->getName();
}
CompilerStack::Contract const& CompilerStack::getContract(string const& _contractName) const
{
if (m_contracts.empty())
BOOST_THROW_EXCEPTION(CompilerError() << errinfo_comment("No compiled contracts found."));
string contractName = _contractName;
if (_contractName.empty())
// try to find some user-supplied contract
for (auto const& it: m_sources)
if (!StandardSources.count(it.first))
for (ASTPointer<ASTNode> const& node: it.second.ast->getNodes())
if (auto contract = dynamic_cast<ContractDefinition const*>(node.get()))
contractName = contract->getName();
auto it = m_contracts.find(contractName);
if (it == m_contracts.end())
BOOST_THROW_EXCEPTION(CompilerError() << errinfo_comment("Contract " + _contractName + " not found."));
return it->second;
}
CompilerStack::Source const& CompilerStack::getSource(string const& _sourceName) const
{
auto it = m_sources.find(_sourceName);
if (it == m_sources.end())
BOOST_THROW_EXCEPTION(CompilerError() << errinfo_comment("Given source file not found."));
return it->second;
}
CompilerStack::Contract::Contract(): interfaceHandler(make_shared<InterfaceHandler>()) {}
}
}

165
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/*
This file is part of cpp-ethereum.
cpp-ethereum is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
cpp-ethereum is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @author Christian <c@ethdev.com>
* @author Gav Wood <g@ethdev.com>
* @date 2014
* Full-stack compiler that converts a source code string to bytecode.
*/
#pragma once
#include <ostream>
#include <string>
#include <memory>
#include <boost/noncopyable.hpp>
#include <libdevcore/Common.h>
#include <libdevcore/FixedHash.h>
namespace dev {
namespace solidity {
// forward declarations
class Scanner;
class ContractDefinition;
class SourceUnit;
class Compiler;
class GlobalContext;
class InterfaceHandler;
enum class DocumentationType: uint8_t
{
NatspecUser = 1,
NatspecDev,
ABIInterface,
ABISolidityInterface
};
extern const std::map<std::string, std::string> StandardSources;
/**
* Easy to use and self-contained Solidity compiler with as few header dependencies as possible.
* It holds state and can be used to either step through the compilation stages (and abort e.g.
* before compilation to bytecode) or run the whole compilation in one call.
*/
class CompilerStack: boost::noncopyable
{
public:
/// Creates a new compiler stack. Adds standard sources if @a _addStandardSources.
explicit CompilerStack(bool _addStandardSources = false);
/// Adds a source object (e.g. file) to the parser. After this, parse has to be called again.
/// @returns true if a source object by the name already existed and was replaced.
void addSources(std::map<std::string, std::string> const& _nameContents) { for (auto const& i: _nameContents) addSource(i.first, i.second); }
bool addSource(std::string const& _name, std::string const& _content);
void setSource(std::string const& _sourceCode);
/// Parses all source units that were added
void parse();
/// Sets the given source code as the only source unit apart from standard sources and parses it.
void parse(std::string const& _sourceCode);
/// Returns a list of the contract names in the sources.
std::vector<std::string> getContractNames() const;
std::string defaultContractName() const;
/// Compiles the source units that were previously added and parsed.
void compile(bool _optimize = false);
/// Parses and compiles the given source code.
/// @returns the compiled bytecode
bytes const& compile(std::string const& _sourceCode, bool _optimize = false);
/// @returns the assembled bytecode for a contract.
bytes const& getBytecode(std::string const& _contractName = "") const;
/// @returns the runtime bytecode for the contract, i.e. the code that is returned by the constructor.
bytes const& getRuntimeBytecode(std::string const& _contractName = "") const;
/// @returns hash of the runtime bytecode for the contract, i.e. the code that is returned by the constructor.
dev::h256 getContractCodeHash(std::string const& _contractName = "") const;
/// Streams a verbose version of the assembly to @a _outStream.
/// Prerequisite: Successful compilation.
void streamAssembly(std::ostream& _outStream, std::string const& _contractName = "") const;
/// Returns a string representing the contract interface in JSON.
/// Prerequisite: Successful call to parse or compile.
std::string const& getInterface(std::string const& _contractName = "") const;
/// Returns a string representing the contract interface in Solidity.
/// Prerequisite: Successful call to parse or compile.
std::string const& getSolidityInterface(std::string const& _contractName = "") const;
/// Returns a string representing the contract's documentation in JSON.
/// Prerequisite: Successful call to parse or compile.
/// @param type The type of the documentation to get.
/// Can be one of 4 types defined at @c DocumentationType
std::string const& getMetadata(std::string const& _contractName, DocumentationType _type) const;
/// @returns the previously used scanner, useful for counting lines during error reporting.
Scanner const& getScanner(std::string const& _sourceName = "") const;
/// @returns the parsed source unit with the supplied name.
SourceUnit const& getAST(std::string const& _sourceName = "") const;
/// @returns the parsed contract with the supplied name. Throws an exception if the contract
/// does not exist.
ContractDefinition const& getContractDefinition(std::string const& _contractName) const;
/// Compile the given @a _sourceCode to bytecode. If a scanner is provided, it is used for
/// scanning the source code - this is useful for printing exception information.
static bytes staticCompile(std::string const& _sourceCode, bool _optimize = false);
private:
/**
* Information pertaining to one source unit, filled gradually during parsing and compilation.
*/
struct Source
{
std::shared_ptr<Scanner> scanner;
std::shared_ptr<SourceUnit> ast;
std::string interface;
void reset() { scanner.reset(); ast.reset(); interface.clear(); }
};
struct Contract
{
ContractDefinition const* contract = nullptr;
std::shared_ptr<Compiler> compiler;
bytes bytecode;
bytes runtimeBytecode;
std::shared_ptr<InterfaceHandler> interfaceHandler;
mutable std::unique_ptr<std::string const> interface;
mutable std::unique_ptr<std::string const> solidityInterface;
mutable std::unique_ptr<std::string const> userDocumentation;
mutable std::unique_ptr<std::string const> devDocumentation;
Contract();
};
/// Expand source code with preprocessor-like includes.
/// @todo Replace with better framework.
std::string expanded(std::string const& _sourceCode);
void reset(bool _keepSources = false);
void resolveImports();
Contract const& getContract(std::string const& _contractName = "") const;
Source const& getSource(std::string const& _sourceName = "") const;
bool m_addStandardSources; ///< If true, standard sources are added.
bool m_parseSuccessful;
std::map<std::string const, Source> m_sources;
std::shared_ptr<GlobalContext> m_globalContext;
std::vector<Source const*> m_sourceOrder;
std::map<std::string const, Contract> m_contracts;
};
}
}

376
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/*
This file is part of cpp-ethereum.
cpp-ethereum is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
cpp-ethereum is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @author Christian <c@ethdev.com>
* @date 2014
* Routines used by both the compiler and the expression compiler.
*/
#include <libsolidity/CompilerUtils.h>
#include <libsolidity/AST.h>
#include <libevmcore/Instruction.h>
using namespace std;
namespace dev
{
namespace solidity
{
const unsigned int CompilerUtils::dataStartOffset = 4;
unsigned CompilerUtils::loadFromMemory(unsigned _offset, Type const& _type,
bool _fromCalldata, bool _padToWordBoundaries)
{
solAssert(_type.getCategory() != Type::Category::ByteArray, "Unable to statically load dynamic type.");
m_context << u256(_offset);
return loadFromMemoryHelper(_type, _fromCalldata, _padToWordBoundaries);
}
void CompilerUtils::loadFromMemoryDynamic(Type const& _type, bool _fromCalldata, bool _padToWordBoundaries)
{
solAssert(_type.getCategory() != Type::Category::ByteArray, "Byte arrays not yet implemented.");
m_context << eth::Instruction::DUP1;
unsigned numBytes = loadFromMemoryHelper(_type, _fromCalldata, _padToWordBoundaries);
// update memory counter
for (unsigned i = 0; i < _type.getSizeOnStack(); ++i)
m_context << eth::swapInstruction(1 + i);
m_context << u256(numBytes) << eth::Instruction::ADD;
}
unsigned CompilerUtils::storeInMemory(unsigned _offset, Type const& _type, bool _padToWordBoundaries)
{
solAssert(_type.getCategory() != Type::Category::ByteArray, "Unable to statically store dynamic type.");
unsigned numBytes = prepareMemoryStore(_type, _padToWordBoundaries);
if (numBytes > 0)
m_context << u256(_offset) << eth::Instruction::MSTORE;
return numBytes;
}
void CompilerUtils::storeInMemoryDynamic(Type const& _type, bool _padToWordBoundaries)
{
if (_type.getCategory() == Type::Category::ByteArray)
{
auto const& type = dynamic_cast<ByteArrayType const&>(_type);
if (type.getLocation() == ByteArrayType::Location::CallData)
{
// stack: target source_offset source_len
m_context << eth::Instruction::DUP1 << eth::Instruction::DUP3 << eth::Instruction::DUP5
// stack: target source_offset source_len source_len source_offset target
<< eth::Instruction::CALLDATACOPY
<< eth::Instruction::DUP3 << eth::Instruction::ADD
<< eth::Instruction::SWAP2 << eth::Instruction::POP << eth::Instruction::POP;
}
else
{
solAssert(type.getLocation() == ByteArrayType::Location::Storage, "Memory byte arrays not yet implemented.");
m_context << eth::Instruction::DUP1 << eth::Instruction::SLOAD;
// stack here: memory_offset storage_offset length_bytes
// jump to end if length is zero
m_context << eth::Instruction::DUP1 << eth::Instruction::ISZERO;
eth::AssemblyItem loopEnd = m_context.newTag();
m_context.appendConditionalJumpTo(loopEnd);
// compute memory end offset
m_context << eth::Instruction::DUP3 << eth::Instruction::ADD << eth::Instruction::SWAP2;
// actual array data is stored at SHA3(storage_offset)
m_context << eth::Instruction::SWAP1;
CompilerUtils(m_context).computeHashStatic();
m_context << eth::Instruction::SWAP1;
// stack here: memory_end_offset storage_data_offset memory_offset
eth::AssemblyItem loopStart = m_context.newTag();
m_context << loopStart
// load and store
<< eth::Instruction::DUP2 << eth::Instruction::SLOAD
<< eth::Instruction::DUP2 << eth::Instruction::MSTORE
// increment storage_data_offset by 1
<< eth::Instruction::SWAP1 << u256(1) << eth::Instruction::ADD
// increment memory offset by 32
<< eth::Instruction::SWAP1 << u256(32) << eth::Instruction::ADD
// check for loop condition
<< eth::Instruction::DUP1 << eth::Instruction::DUP4 << eth::Instruction::GT;
m_context.appendConditionalJumpTo(loopStart);
m_context << loopEnd << eth::Instruction::POP << eth::Instruction::POP;
}
}
else
{
unsigned numBytes = prepareMemoryStore(_type, _padToWordBoundaries);
if (numBytes > 0)
{
solAssert(_type.getSizeOnStack() == 1, "Memory store of types with stack size != 1 not implemented.");
m_context << eth::Instruction::DUP2 << eth::Instruction::MSTORE;
m_context << u256(numBytes) << eth::Instruction::ADD;
}
}
}
void CompilerUtils::moveToStackVariable(VariableDeclaration const& _variable)
{
unsigned const stackPosition = m_context.baseToCurrentStackOffset(m_context.getBaseStackOffsetOfVariable(_variable));
unsigned const size = _variable.getType()->getSizeOnStack();
// move variable starting from its top end in the stack
if (stackPosition - size + 1 > 16)
BOOST_THROW_EXCEPTION(CompilerError() << errinfo_sourceLocation(_variable.getLocation())
<< errinfo_comment("Stack too deep."));
for (unsigned i = 0; i < size; ++i)
m_context << eth::swapInstruction(stackPosition - size + 1) << eth::Instruction::POP;
}
void CompilerUtils::copyToStackTop(unsigned _stackDepth, Type const& _type)
{
if (_stackDepth > 16)
BOOST_THROW_EXCEPTION(CompilerError() << errinfo_comment("Stack too deep."));
unsigned const size = _type.getSizeOnStack();
for (unsigned i = 0; i < size; ++i)
m_context << eth::dupInstruction(_stackDepth);
}
void CompilerUtils::popStackElement(Type const& _type)
{
unsigned const size = _type.getSizeOnStack();
for (unsigned i = 0; i < size; ++i)
m_context << eth::Instruction::POP;
}
unsigned CompilerUtils::getSizeOnStack(vector<shared_ptr<Type const>> const& _variableTypes)
{
unsigned size = 0;
for (shared_ptr<Type const> const& type: _variableTypes)
size += type->getSizeOnStack();
return size;
}
void CompilerUtils::computeHashStatic(Type const& _type, bool _padToWordBoundaries)
{
unsigned length = storeInMemory(0, _type, _padToWordBoundaries);
m_context << u256(length) << u256(0) << eth::Instruction::SHA3;
}
void CompilerUtils::copyByteArrayToStorage(ByteArrayType const& _targetType,
ByteArrayType const& _sourceType) const
{
// stack layout: [source_ref] target_ref (top)
// need to leave target_ref on the stack at the end
solAssert(_targetType.getLocation() == ByteArrayType::Location::Storage, "");
switch (_sourceType.getLocation())
{
case ByteArrayType::Location::CallData:
{
// This also assumes that after "length" we only have zeros, i.e. it cannot be used to
// slice a byte array from calldata.
// stack: source_offset source_len target_ref
// fetch old length and convert to words
m_context << eth::Instruction::DUP1 << eth::Instruction::SLOAD;
m_context << u256(31) << eth::Instruction::ADD
<< u256(32) << eth::Instruction::SWAP1 << eth::Instruction::DIV;
// stack here: source_offset source_len target_ref target_length_words
// actual array data is stored at SHA3(storage_offset)
m_context << eth::Instruction::DUP2;
CompilerUtils(m_context).computeHashStatic();
// compute target_data_end
m_context << eth::Instruction::DUP1 << eth::Instruction::SWAP2 << eth::Instruction::ADD
<< eth::Instruction::SWAP1;
// stack here: source_offset source_len target_ref target_data_end target_data_ref
// store length (in bytes)
m_context << eth::Instruction::DUP4 << eth::Instruction::DUP1 << eth::Instruction::DUP5
<< eth::Instruction::SSTORE;
// jump to end if length is zero
m_context << eth::Instruction::ISZERO;
eth::AssemblyItem copyLoopEnd = m_context.newTag();
m_context.appendConditionalJumpTo(copyLoopEnd);
// store start offset
m_context << eth::Instruction::DUP5;
// stack now: source_offset source_len target_ref target_data_end target_data_ref calldata_offset
eth::AssemblyItem copyLoopStart = m_context.newTag();
m_context << copyLoopStart
// copy from calldata and store
<< eth::Instruction::DUP1 << eth::Instruction::CALLDATALOAD
<< eth::Instruction::DUP3 << eth::Instruction::SSTORE
// increment target_data_ref by 1
<< eth::Instruction::SWAP1 << u256(1) << eth::Instruction::ADD
// increment calldata_offset by 32
<< eth::Instruction::SWAP1 << u256(32) << eth::Instruction::ADD
// check for loop condition
<< eth::Instruction::DUP1 << eth::Instruction::DUP6 << eth::Instruction::GT;
m_context.appendConditionalJumpTo(copyLoopStart);
m_context << eth::Instruction::POP;
m_context << copyLoopEnd;
// now clear leftover bytes of the old value
// stack now: source_offset source_len target_ref target_data_end target_data_ref
clearStorageLoop();
// stack now: source_offset source_len target_ref target_data_end
m_context << eth::Instruction::POP << eth::Instruction::SWAP2
<< eth::Instruction::POP << eth::Instruction::POP;
break;
}
case ByteArrayType::Location::Storage:
{
// this copies source to target and also clears target if it was larger
// stack: source_ref target_ref
// store target_ref
m_context << eth::Instruction::SWAP1 << eth::Instruction::DUP2;
// fetch lengthes
m_context << eth::Instruction::DUP1 << eth::Instruction::SLOAD << eth::Instruction::SWAP2
<< eth::Instruction::DUP1 << eth::Instruction::SLOAD;
// stack: target_ref target_len_bytes target_ref source_ref source_len_bytes
// store new target length
m_context << eth::Instruction::DUP1 << eth::Instruction::DUP4 << eth::Instruction::SSTORE;
// compute hashes (data positions)
m_context << eth::Instruction::SWAP2;
CompilerUtils(m_context).computeHashStatic();
m_context << eth::Instruction::SWAP1;
CompilerUtils(m_context).computeHashStatic();
// stack: target_ref target_len_bytes source_len_bytes target_data_pos source_data_pos
// convert lengthes from bytes to storage slots
m_context << u256(31) << u256(32) << eth::Instruction::DUP1 << eth::Instruction::DUP3
<< eth::Instruction::DUP8 << eth::Instruction::ADD << eth::Instruction::DIV
<< eth::Instruction::SWAP2
<< eth::Instruction::DUP6 << eth::Instruction::ADD << eth::Instruction::DIV;
// stack: target_ref target_len_bytes source_len_bytes target_data_pos source_data_pos target_len source_len
// @todo we might be able to go without a third counter
m_context << u256(0);
// stack: target_ref target_len_bytes source_len_bytes target_data_pos source_data_pos target_len source_len counter
eth::AssemblyItem copyLoopStart = m_context.newTag();
m_context << copyLoopStart;
// check for loop condition
m_context << eth::Instruction::DUP1 << eth::Instruction::DUP3
<< eth::Instruction::GT << eth::Instruction::ISZERO;
eth::AssemblyItem copyLoopEnd = m_context.newTag();
m_context.appendConditionalJumpTo(copyLoopEnd);
// copy
m_context << eth::Instruction::DUP4 << eth::Instruction::DUP2 << eth::Instruction::ADD
<< eth::Instruction::SLOAD
<< eth::Instruction::DUP6 << eth::Instruction::DUP3 << eth::Instruction::ADD
<< eth::Instruction::SSTORE;
// increment
m_context << u256(1) << eth::Instruction::ADD;
m_context.appendJumpTo(copyLoopStart);
m_context << copyLoopEnd;
// zero-out leftovers in target
// stack: target_ref target_len_bytes source_len_bytes target_data_pos source_data_pos target_len source_len counter
// add counter to target_data_pos
m_context << eth::Instruction::DUP5 << eth::Instruction::ADD
<< eth::Instruction::SWAP5 << eth::Instruction::POP;
// stack: target_ref target_len_bytes target_data_pos_updated target_data_pos source_data_pos target_len source_len
// add length to target_data_pos to get target_data_end
m_context << eth::Instruction::POP << eth::Instruction::DUP3 << eth::Instruction::ADD
<< eth::Instruction::SWAP4
<< eth::Instruction::POP << eth::Instruction::POP << eth::Instruction::POP;
// stack: target_ref target_data_end target_data_pos_updated
clearStorageLoop();
m_context << eth::Instruction::POP;
break;
}
default:
solAssert(false, "Given byte array location not implemented.");
}
}
unsigned CompilerUtils::loadFromMemoryHelper(Type const& _type, bool _fromCalldata, bool _padToWordBoundaries)
{
unsigned _encodedSize = _type.getCalldataEncodedSize();
unsigned numBytes = _padToWordBoundaries ? getPaddedSize(_encodedSize) : _encodedSize;
bool leftAligned = _type.getCategory() == Type::Category::String;
if (numBytes == 0)
m_context << eth::Instruction::POP << u256(0);
else
{
solAssert(numBytes <= 32, "Static memory load of more than 32 bytes requested.");
m_context << (_fromCalldata ? eth::Instruction::CALLDATALOAD : eth::Instruction::MLOAD);
if (numBytes != 32)
{
// add leading or trailing zeros by dividing/multiplying depending on alignment
u256 shiftFactor = u256(1) << ((32 - numBytes) * 8);
m_context << shiftFactor << eth::Instruction::SWAP1 << eth::Instruction::DIV;
if (leftAligned)
m_context << shiftFactor << eth::Instruction::MUL;
}
}
return numBytes;
}
void CompilerUtils::clearByteArray(ByteArrayType const& _type) const
{
solAssert(_type.getLocation() == ByteArrayType::Location::Storage, "");
// fetch length
m_context << eth::Instruction::DUP1 << eth::Instruction::SLOAD;
// set length to zero
m_context << u256(0) << eth::Instruction::DUP3 << eth::Instruction::SSTORE;
// convert length from bytes to storage slots
m_context << u256(31) << eth::Instruction::ADD
<< u256(32) << eth::Instruction::SWAP1 << eth::Instruction::DIV;
// compute data positions
m_context << eth::Instruction::SWAP1;
CompilerUtils(m_context).computeHashStatic();
// stack: len data_pos
m_context << eth::Instruction::SWAP1 << eth::Instruction::DUP2 << eth::Instruction::ADD
<< eth::Instruction::SWAP1;
clearStorageLoop();
// cleanup
m_context << eth::Instruction::POP;
}
unsigned CompilerUtils::prepareMemoryStore(Type const& _type, bool _padToWordBoundaries) const
{
unsigned _encodedSize = _type.getCalldataEncodedSize();
unsigned numBytes = _padToWordBoundaries ? getPaddedSize(_encodedSize) : _encodedSize;
bool leftAligned = _type.getCategory() == Type::Category::String;
if (numBytes == 0)
m_context << eth::Instruction::POP;
else
{
solAssert(numBytes <= 32, "Memory store of more than 32 bytes requested.");
if (numBytes != 32 && !leftAligned && !_padToWordBoundaries)
// shift the value accordingly before storing
m_context << (u256(1) << ((32 - numBytes) * 8)) << eth::Instruction::MUL;
}
return numBytes;
}
void CompilerUtils::clearStorageLoop() const
{
// stack: end_pos pos
eth::AssemblyItem loopStart = m_context.newTag();
m_context << loopStart;
// check for loop condition
m_context << eth::Instruction::DUP1 << eth::Instruction::DUP3
<< eth::Instruction::GT << eth::Instruction::ISZERO;
eth::AssemblyItem zeroLoopEnd = m_context.newTag();
m_context.appendConditionalJumpTo(zeroLoopEnd);
// zero out
m_context << u256(0) << eth::Instruction::DUP2 << eth::Instruction::SSTORE;
// increment
m_context << u256(1) << eth::Instruction::ADD;
m_context.appendJumpTo(loopStart);
// cleanup
m_context << zeroLoopEnd;
m_context << eth::Instruction::POP;
}
}
}

119
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/*
This file is part of cpp-ethereum.
cpp-ethereum is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
cpp-ethereum is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @author Christian <c@ethdev.com>
* @date 2014
* Routines used by both the compiler and the expression compiler.
*/
#pragma once
#include <libsolidity/CompilerContext.h>
#include <libsolidity/ASTForward.h>
namespace dev {
namespace solidity {
class Type; // forward
class CompilerUtils
{
public:
CompilerUtils(CompilerContext& _context): m_context(_context) {}
/// Loads data from memory to the stack.
/// @param _offset offset in memory (or calldata)
/// @param _type data type to load
/// @param _fromCalldata if true, load from calldata, not from memory
/// @param _padToWordBoundaries if true, assume the data is padded to word (32 byte) boundaries
/// @returns the number of bytes consumed in memory.
unsigned loadFromMemory(unsigned _offset, Type const& _type = IntegerType(256),
bool _fromCalldata = false, bool _padToWordBoundaries = false);
/// Dynamic version of @see loadFromMemory, expects the memory offset on the stack.
/// Stack pre: memory_offset
/// Stack post: value... (memory_offset+length)
void loadFromMemoryDynamic(Type const& _type, bool _fromCalldata = false, bool _padToWordBoundaries = true);
/// Stores data from stack in memory.
/// @param _offset offset in memory
/// @param _type type of the data on the stack
/// @param _padToWordBoundaries if true, pad the data to word (32 byte) boundaries
/// @returns the number of bytes written to memory (can be different from _bytes if
/// _padToWordBoundaries is true)
unsigned storeInMemory(unsigned _offset, Type const& _type = IntegerType(256), bool _padToWordBoundaries = false);
/// Dynamic version of @see storeInMemory, expects the memory offset below the value on the stack
/// and also updates that.
/// Stack pre: memory_offset value...
/// Stack post: (memory_offset+length)
void storeInMemoryDynamic(Type const& _type, bool _padToWordBoundaries = true);
/// @returns _size rounded up to the next multiple of 32 (the number of bytes occupied in the
/// padded calldata)
static unsigned getPaddedSize(unsigned _size) { return ((_size + 31) / 32) * 32; }
/// Moves the value that is at the top of the stack to a stack variable.
void moveToStackVariable(VariableDeclaration const& _variable);
/// Copies a variable of type @a _type from a stack depth of @a _stackDepth to the top of the stack.
void copyToStackTop(unsigned _stackDepth, Type const& _type);
/// Removes the current value from the top of the stack.
void popStackElement(Type const& _type);
template <class T>
static unsigned getSizeOnStack(std::vector<T> const& _variables);
static unsigned getSizeOnStack(std::vector<std::shared_ptr<Type const>> const& _variableTypes);
/// Appends code that computes tha SHA3 hash of the topmost stack element of type @a _type.
/// If @a _pad is set, padds the type to muliples of 32 bytes.
/// @note Only works for types of fixed size.
void computeHashStatic(Type const& _type = IntegerType(256), bool _padToWordBoundaries = false);
/// Copies a byte array to a byte array in storage.
/// Stack pre: [source_reference] target_reference
/// Stack post: target_reference
void copyByteArrayToStorage(ByteArrayType const& _targetType, ByteArrayType const& _sourceType) const;
/// Clears the length and data elements of the byte array referenced on the stack.
/// Stack pre: reference
/// Stack post:
void clearByteArray(ByteArrayType const& _type) const;
/// Bytes we need to the start of call data.
/// - The size in bytes of the function (hash) identifier.
static const unsigned int dataStartOffset;
private:
/// Prepares the given type for storing in memory by shifting it if necessary.
unsigned prepareMemoryStore(Type const& _type, bool _padToWordBoundaries) const;
/// Loads type from memory assuming memory offset is on stack top.
unsigned loadFromMemoryHelper(Type const& _type, bool _fromCalldata, bool _padToWordBoundaries);
/// Appends a loop that clears a sequence of storage slots (excluding end).
/// Stack pre: end_ref start_ref
/// Stack post: end_ref
void clearStorageLoop() const;
CompilerContext& m_context;
};
template <class T>
unsigned CompilerUtils::getSizeOnStack(std::vector<T> const& _variables)
{
unsigned size = 0;
for (T const& variable: _variables)
size += variable->getType()->getSizeOnStack();
return size;
}
}
}

59
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/*
This file is part of cpp-ethereum.
cpp-ethereum is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
cpp-ethereum is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @author Christian <c@ethdev.com>
* @date 2014
* Scope - object that holds declaration of names.
*/
#include <libsolidity/DeclarationContainer.h>
#include <libsolidity/AST.h>
namespace dev
{
namespace solidity
{
bool DeclarationContainer::registerDeclaration(Declaration const& _declaration, bool _invisible, bool _update)
{
ASTString const& name(_declaration.getName());
if (name.empty())
return true;
if (!_update && (m_declarations.count(name) || m_invisibleDeclarations.count(name)))
return false;
if (_invisible)
m_invisibleDeclarations.insert(name);
else
m_declarations[name] = &_declaration;
return true;
}
Declaration const* DeclarationContainer::resolveName(ASTString const& _name, bool _recursive) const
{
solAssert(!_name.empty(), "Attempt to resolve empty name.");
auto result = m_declarations.find(_name);
if (result != m_declarations.end())
return result->second;
if (_recursive && m_enclosingContainer)
return m_enclosingContainer->resolveName(_name, true);
return nullptr;
}
}
}

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/*
This file is part of cpp-ethereum.
cpp-ethereum is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
cpp-ethereum is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @author Christian <c@ethdev.com>
* @date 2014
* Scope - object that holds declaration of names.
*/
#pragma once
#include <map>
#include <set>
#include <boost/noncopyable.hpp>
#include <libsolidity/ASTForward.h>
namespace dev
{
namespace solidity
{
/**
* Container that stores mappings betwee names and declarations. It also contains a link to the
* enclosing scope.
*/
class DeclarationContainer
{
public:
explicit DeclarationContainer(Declaration const* _enclosingDeclaration = nullptr,
DeclarationContainer const* _enclosingContainer = nullptr):
m_enclosingDeclaration(_enclosingDeclaration), m_enclosingContainer(_enclosingContainer) {}
/// Registers the declaration in the scope unless its name is already declared or the name is empty.
/// @param _invisible if true, registers the declaration, reports name clashes but does not return it in @a resolveName
/// @param _update if true, replaces a potential declaration that is already present
/// @returns false if the name was already declared.
bool registerDeclaration(Declaration const& _declaration, bool _invisible = false, bool _update = false);
Declaration const* resolveName(ASTString const& _name, bool _recursive = false) const;
Declaration const* getEnclosingDeclaration() const { return m_enclosingDeclaration; }
std::map<ASTString, Declaration const*> const& getDeclarations() const { return m_declarations; }
private:
Declaration const* m_enclosingDeclaration;
DeclarationContainer const* m_enclosingContainer;
std::map<ASTString, Declaration const*> m_declarations;
std::set<ASTString> m_invisibleDeclarations;
};
}
}

44
Exceptions.h
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/*
This file is part of cpp-ethereum.
cpp-ethereum is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
cpp-ethereum is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @author Christian <c@ethdev.com>
* @date 2014
* Solidity exception hierarchy.
*/
#pragma once
#include <string>
#include <libdevcore/Exceptions.h>
#include <libsolidity/BaseTypes.h>
namespace dev
{
namespace solidity
{
struct ParserError: virtual Exception {};
struct TypeError: virtual Exception {};
struct DeclarationError: virtual Exception {};
struct CompilerError: virtual Exception {};
struct InternalCompilerError: virtual Exception {};
struct DocstringParsingError: virtual Exception {};
using errinfo_sourceLocation = boost::error_info<struct tag_sourceLocation, Location>;
}
}

1248
ExpressionCompiler.cpp
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180
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/*
This file is part of cpp-ethereum.
cpp-ethereum is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
cpp-ethereum is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @author Christian <c@ethdev.com>
* @author Gav Wood <g@ethdev.com>
* @date 2014
* Solidity AST to EVM bytecode compiler for expressions.
*/
#include <functional>
#include <memory>
#include <boost/noncopyable.hpp>
#include <libdevcore/Common.h>
#include <libsolidity/BaseTypes.h>
#include <libsolidity/ASTVisitor.h>
namespace dev {
namespace eth
{
class AssemblyItem; // forward
}
namespace solidity {
// forward declarations
class CompilerContext;
class Type;
class IntegerType;
class ByteArrayType;
class StaticStringType;
/**
* Compiler for expressions, i.e. converts an AST tree whose root is an Expression into a stream
* of EVM instructions. It needs a compiler context that is the same for the whole compilation
* unit.
*/
class ExpressionCompiler: private ASTConstVisitor
{
public:
/// Compile the given @a _expression into the @a _context.
static void compileExpression(CompilerContext& _context, Expression const& _expression, bool _optimize = false);
/// Appends code to remove dirty higher order bits in case of an implicit promotion to a wider type.
static void appendTypeConversion(CompilerContext& _context, Type const& _typeOnStack,
Type const& _targetType, bool _cleanupNeeded = false);
/// Appends code for a State Variable accessor function
static void appendStateVariableAccessor(CompilerContext& _context, VariableDeclaration const& _varDecl, bool _optimize = false);
private:
explicit ExpressionCompiler(CompilerContext& _compilerContext, bool _optimize = false):
m_optimize(_optimize), m_context(_compilerContext), m_currentLValue(m_context) {}
virtual bool visit(Assignment const& _assignment) override;
virtual bool visit(UnaryOperation const& _unaryOperation) override;
virtual bool visit(BinaryOperation const& _binaryOperation) override;
virtual bool visit(FunctionCall const& _functionCall) override;
virtual bool visit(NewExpression const& _newExpression) override;
virtual void endVisit(MemberAccess const& _memberAccess) override;
virtual bool visit(IndexAccess const& _indexAccess) override;
virtual void endVisit(Identifier const& _identifier) override;
virtual void endVisit(Literal const& _literal) override;
///@{
///@name Append code for various operator types
void appendAndOrOperatorCode(BinaryOperation const& _binaryOperation);
void appendCompareOperatorCode(Token::Value _operator, Type const& _type);
void appendOrdinaryBinaryOperatorCode(Token::Value _operator, Type const& _type);
void appendArithmeticOperatorCode(Token::Value _operator, Type const& _type);
void appendBitOperatorCode(Token::Value _operator);
void appendShiftOperatorCode(Token::Value _operator);
/// @}
/// Appends an implicit or explicit type conversion. For now this comprises only erasing
/// higher-order bits (@see appendHighBitCleanup) when widening integer.
/// If @a _cleanupNeeded, high order bits cleanup is also done if no type conversion would be
/// necessary.
void appendTypeConversion(Type const& _typeOnStack, Type const& _targetType, bool _cleanupNeeded = false);
//// Appends code that cleans higher-order bits for integer types.
void appendHighBitsCleanup(IntegerType const& _typeOnStack);
/// Appends code to call a function of the given type with the given arguments.
void appendExternalFunctionCall(FunctionType const& _functionType, std::vector<ASTPointer<Expression const>> const& _arguments,
bool bare = false);
/// Appends code that evaluates the given arguments and moves the result to memory. The memory offset is
/// expected to be on the stack and is updated by this call.
void appendArgumentsCopyToMemory(std::vector<ASTPointer<Expression const>> const& _arguments,
TypePointers const& _types = {},
bool _padToWordBoundaries = true,
bool _padExceptionIfFourBytes = false);
/// Appends code that moves a stack element of the given type to memory. The memory offset is
/// expected below the stack element and is updated by this call.
void appendTypeMoveToMemory(Type const& _type, bool _padToWordBoundaries = true);
/// Appends code that evaluates a single expression and moves the result to memory. The memory offset is
/// expected to be on the stack and is updated by this call.
void appendExpressionCopyToMemory(Type const& _expectedType, Expression const& _expression);
/// Appends code for a State Variable accessor function
void appendStateVariableAccessor(VariableDeclaration const& _varDecl);
/**
* Helper class to store and retrieve lvalues to and from various locations.
* All types except STACK store a reference in a slot on the stack, STACK just
* stores the base stack offset of the variable in @a m_baseStackOffset.
*/
class LValue
{
public:
enum class LValueType { None, Stack, Memory, Storage };
explicit LValue(CompilerContext& _compilerContext): m_context(&_compilerContext) { reset(); }
LValue(CompilerContext& _compilerContext, LValueType _type,
std::shared_ptr<Type const> const& _dataType, unsigned _baseStackOffset = 0);
/// Set type according to the declaration and retrieve the reference.
/// @a _expression is the current expression
void fromIdentifier(Identifier const& _identifier, Declaration const& _declaration);
void reset() { m_type = LValueType::None; m_dataType.reset(); m_baseStackOffset = 0; m_size = 0; }
bool isValid() const { return m_type != LValueType::None; }
bool isInOnStack() const { return m_type == LValueType::Stack; }
bool isInMemory() const { return m_type == LValueType::Memory; }
bool isInStorage() const { return m_type == LValueType::Storage; }
/// @returns true if this lvalue reference type occupies a slot on the stack.
bool storesReferenceOnStack() const { return m_type == LValueType::Storage || m_type == LValueType::Memory; }
/// Copies the value of the current lvalue to the top of the stack and, if @a _remove is true,
/// also removes the reference from the stack (note that is does not reset the type to @a NONE).
/// @a _location source location of the current expression, used for error reporting.
void retrieveValue(Location const& _location, bool _remove = false) const;
/// Moves a value from the stack to the lvalue. Removes the value if @a _move is true.
/// @a _location is the source location of the expression that caused this operation.
/// Stack pre: value [lvalue_ref]
/// Stack post if !_move: value_of(lvalue_ref)
void storeValue(Type const& _sourceType, Location const& _location = Location(), bool _move = false) const;
/// Stores zero in the lvalue.
/// @a _location is the source location of the requested operation
void setToZero(Location const& _location = Location()) const;
/// Convenience function to convert the stored reference to a value and reset type to NONE if
/// the reference was not requested by @a _expression.
void retrieveValueIfLValueNotRequested(Expression const& _expression);
private:
/// Convenience function to retrieve Value from Storage. Specific version of @ref retrieveValue
void retrieveValueFromStorage(bool _remove = false) const;
/// Copies from a byte array to a byte array in storage, both references on the stack.
void copyByteArrayToStorage(ByteArrayType const& _targetType, ByteArrayType const& _sourceType) const;
CompilerContext* m_context;
LValueType m_type = LValueType::None;
std::shared_ptr<Type const> m_dataType;
/// If m_type is STACK, this is base stack offset (@see
/// CompilerContext::getBaseStackOffsetOfVariable) of a local variable.
unsigned m_baseStackOffset = 0;
/// Size of the value of this lvalue on the stack or the storage.
unsigned m_size = 0;
};
bool m_optimize;
CompilerContext& m_context;
LValue m_currentLValue;
};
}
}

95
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@ -1,95 +0,0 @@
/*
This file is part of cpp-ethereum.
cpp-ethereum is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
cpp-ethereum is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @author Christian <c@ethdev.com>
* @author Gav Wood <g@ethdev.com>
* @date 2014
* Container of the (implicit and explicit) global objects.
*/
#include <memory>
#include <libsolidity/GlobalContext.h>
#include <libsolidity/AST.h>
#include <libsolidity/Types.h>
using namespace std;
namespace dev
{
namespace solidity
{
GlobalContext::GlobalContext():
m_magicVariables(vector<shared_ptr<MagicVariableDeclaration const>>{make_shared<MagicVariableDeclaration>("block", make_shared<MagicType>(MagicType::Kind::Block)),
make_shared<MagicVariableDeclaration>("msg", make_shared<MagicType>(MagicType::Kind::Message)),
make_shared<MagicVariableDeclaration>("tx", make_shared<MagicType>(MagicType::Kind::Transaction)),
make_shared<MagicVariableDeclaration>("suicide",
make_shared<FunctionType>(strings{"address"}, strings{}, FunctionType::Location::Suicide)),
make_shared<MagicVariableDeclaration>("sha3",
make_shared<FunctionType>(strings(), strings{"hash"}, FunctionType::Location::SHA3, true)),
make_shared<MagicVariableDeclaration>("log0",
make_shared<FunctionType>(strings{"hash"},strings{}, FunctionType::Location::Log0)),
make_shared<MagicVariableDeclaration>("log1",
make_shared<FunctionType>(strings{"hash", "hash"},strings{}, FunctionType::Location::Log1)),
make_shared<MagicVariableDeclaration>("log2",
make_shared<FunctionType>(strings{"hash", "hash", "hash"},strings{}, FunctionType::Location::Log2)),
make_shared<MagicVariableDeclaration>("log3",
make_shared<FunctionType>(strings{"hash", "hash", "hash", "hash"},strings{}, FunctionType::Location::Log3)),
make_shared<MagicVariableDeclaration>("log4",
make_shared<FunctionType>(strings{"hash", "hash", "hash", "hash", "hash"},strings{}, FunctionType::Location::Log4)),
make_shared<MagicVariableDeclaration>("sha256",
make_shared<FunctionType>(strings(), strings{"hash"}, FunctionType::Location::SHA256, true)),
make_shared<MagicVariableDeclaration>("ecrecover",
make_shared<FunctionType>(strings{"hash", "hash8", "hash", "hash"}, strings{"address"}, FunctionType::Location::ECRecover)),
make_shared<MagicVariableDeclaration>("ripemd160",
make_shared<FunctionType>(strings(), strings{"hash160"}, FunctionType::Location::RIPEMD160, true))})
{
}
void GlobalContext::setCurrentContract(ContractDefinition const& _contract)
{
m_currentContract = &_contract;
}
vector<Declaration const*> GlobalContext::getDeclarations() const
{
vector<Declaration const*> declarations;
declarations.reserve(m_magicVariables.size());
for (ASTPointer<Declaration const> const& variable: m_magicVariables)
declarations.push_back(variable.get());
return declarations;
}
MagicVariableDeclaration const* GlobalContext::getCurrentThis() const
{
if (!m_thisPointer[m_currentContract])
m_thisPointer[m_currentContract] = make_shared<MagicVariableDeclaration>(
"this", make_shared<ContractType>(*m_currentContract));
return m_thisPointer[m_currentContract].get();
}
MagicVariableDeclaration const* GlobalContext::getCurrentSuper() const
{
if (!m_superPointer[m_currentContract])
m_superPointer[m_currentContract] = make_shared<MagicVariableDeclaration>(
"super", make_shared<ContractType>(*m_currentContract, true));
return m_superPointer[m_currentContract].get();
}
}
}

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/*
This file is part of cpp-ethereum.
cpp-ethereum is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
cpp-ethereum is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @author Christian <c@ethdev.com>
* @date 2014
* Container of the (implicit and explicit) global objects.
*/
#pragma once
#include <string>
#include <vector>
#include <map>
#include <memory>
#include <boost/noncopyable.hpp>
#include <libsolidity/ASTForward.h>
namespace dev
{
namespace solidity
{
class Type; // forward
/**
* Container for all global objects which look like AST nodes, but are not part of the AST
* that is currently being compiled.
* @note must not be destroyed or moved during compilation as its objects can be referenced from
* other objects.
*/
class GlobalContext: private boost::noncopyable
{
public:
GlobalContext();
void setCurrentContract(ContractDefinition const& _contract);
MagicVariableDeclaration const* getCurrentThis() const;
MagicVariableDeclaration const* getCurrentSuper() const;
/// @returns a vector of all implicit global declarations excluding "this".
std::vector<Declaration const*> getDeclarations() const;
private:
std::vector<std::shared_ptr<MagicVariableDeclaration const>> m_magicVariables;
ContractDefinition const* m_currentContract = nullptr;
std::map<ContractDefinition const*, std::shared_ptr<MagicVariableDeclaration const>> mutable m_thisPointer;
std::map<ContractDefinition const*, std::shared_ptr<MagicVariableDeclaration const>> mutable m_superPointer;
};
}
}

391
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#include <libsolidity/InterfaceHandler.h>
#include <libsolidity/AST.h>
#include <libsolidity/CompilerStack.h>
using namespace std;
namespace dev
{
namespace solidity
{
/* -- public -- */
InterfaceHandler::InterfaceHandler()
{
m_lastTag = DocTagType::None;
}
std::unique_ptr<std::string> InterfaceHandler::getDocumentation(ContractDefinition const& _contractDef,
DocumentationType _type)
{
switch(_type)
{
case DocumentationType::NatspecUser:
return getUserDocumentation(_contractDef);
case DocumentationType::NatspecDev:
return getDevDocumentation(_contractDef);
case DocumentationType::ABIInterface:
return getABIInterface(_contractDef);
case DocumentationType::ABISolidityInterface:
return getABISolidityInterface(_contractDef);
}
BOOST_THROW_EXCEPTION(InternalCompilerError() << errinfo_comment("Unknown documentation type"));
return nullptr;
}
std::unique_ptr<std::string> InterfaceHandler::getABIInterface(ContractDefinition const& _contractDef)
{
Json::Value abi(Json::arrayValue);
for (auto const& it: _contractDef.getInterfaceFunctions())
{
auto populateParameters = [](vector<string> const& _paramNames, vector<string> const& _paramTypes)
{
Json::Value params(Json::arrayValue);
solAssert(_paramNames.size() == _paramTypes.size(), "Names and types vector size does not match");
for (unsigned i = 0; i < _paramNames.size(); ++i)
{
Json::Value param;
param["name"] = _paramNames[i];
param["type"] = _paramTypes[i];
params.append(param);
}
return params;
};
Json::Value method;
method["type"] = "function";
method["name"] = it.second->getDeclaration().getName();
method["constant"] = it.second->isConstant();
method["inputs"] = populateParameters(it.second->getParameterNames(),
it.second->getParameterTypeNames());
method["outputs"] = populateParameters(it.second->getReturnParameterNames(),
it.second->getReturnParameterTypeNames());
abi.append(method);
}
for (auto const& it: _contractDef.getInterfaceEvents())
{
Json::Value event;
event["type"] = "event";
event["name"] = it->getName();
Json::Value params(Json::arrayValue);
for (auto const& p: it->getParameters())
{
Json::Value input;
input["name"] = p->getName();
input["type"] = p->getType()->toString();
input["indexed"] = p->isIndexed();
params.append(input);
}
event["inputs"] = params;
abi.append(event);
}
return std::unique_ptr<std::string>(new std::string(m_writer.write(abi)));
}
unique_ptr<string> InterfaceHandler::getABISolidityInterface(ContractDefinition const& _contractDef)
{
string ret = "contract " + _contractDef.getName() + "{";
for (auto const& it: _contractDef.getInterfaceFunctions())
{
auto populateParameters = [](vector<string> const& _paramNames,
vector<string> const& _paramTypes)
{
string r = "";
solAssert(_paramNames.size() == _paramTypes.size(), "Names and types vector size does not match");
for (unsigned i = 0; i < _paramNames.size(); ++i)
r += (r.size() ? "," : "(") + _paramTypes[i] + " " + _paramNames[i];
return r.size() ? r + ")" : "()";
};
ret += "function " + it.second->getDeclaration().getName() +
populateParameters(it.second->getParameterNames(), it.second->getParameterTypeNames()) +
(it.second->isConstant() ? "constant " : "");
if (it.second->getReturnParameterTypes().size())
ret += "returns" + populateParameters(it.second->getReturnParameterNames(), it.second->getReturnParameterTypeNames());
else if (ret.back() == ' ')
ret.pop_back();
ret += "{}";
}
return unique_ptr<string>(new string(ret + "}"));
}
std::unique_ptr<std::string> InterfaceHandler::getUserDocumentation(ContractDefinition const& _contractDef)
{
Json::Value doc;
Json::Value methods(Json::objectValue);
for (auto const& it: _contractDef.getInterfaceFunctions())
{
Json::Value user;
auto strPtr = it.second->getDocumentation();
if (strPtr)
{
resetUser();
parseDocString(*strPtr, CommentOwner::Function);
if (!m_notice.empty())
{// since @notice is the only user tag if missing function should not appear
user["notice"] = Json::Value(m_notice);
methods[it.second->getCanonicalSignature()] = user;
}
}
}
doc["methods"] = methods;
return std::unique_ptr<std::string>(new std::string(m_writer.write(doc)));
}
std::unique_ptr<std::string> InterfaceHandler::getDevDocumentation(ContractDefinition const& _contractDef)
{
// LTODO: Somewhere in this function warnings for mismatch of param names
// should be thrown
Json::Value doc;
Json::Value methods(Json::objectValue);
auto contractDoc = _contractDef.getDocumentation();
if (contractDoc)
{
m_contractAuthor.clear();
m_title.clear();
parseDocString(*contractDoc, CommentOwner::Contract);
if (!m_contractAuthor.empty())
doc["author"] = m_contractAuthor;
if (!m_title.empty())
doc["title"] = m_title;
}
for (auto const& it: _contractDef.getInterfaceFunctions())
{
Json::Value method;
auto strPtr = it.second->getDocumentation();
if (strPtr)
{
resetDev();
parseDocString(*strPtr, CommentOwner::Function);
if (!m_dev.empty())
method["details"] = Json::Value(m_dev);
if (!m_author.empty())
method["author"] = m_author;
Json::Value params(Json::objectValue);
for (auto const& pair: m_params)
params[pair.first] = pair.second;
if (!m_params.empty())
method["params"] = params;
if (!m_return.empty())
method["return"] = m_return;
if (!method.empty()) // add the function, only if we have any documentation to add
methods[it.second->getCanonicalSignature()] = method;
}
}
doc["methods"] = methods;
return std::unique_ptr<std::string>(new std::string(m_writer.write(doc)));
}
/* -- private -- */
void InterfaceHandler::resetUser()
{
m_notice.clear();
}
void InterfaceHandler::resetDev()
{
m_dev.clear();
m_author.clear();
m_return.clear();
m_params.clear();
}
static inline std::string::const_iterator skipLineOrEOS(std::string::const_iterator _nlPos,
std::string::const_iterator _end)
{
return (_nlPos == _end) ? _end : ++_nlPos;
}
std::string::const_iterator InterfaceHandler::parseDocTagLine(std::string::const_iterator _pos,
std::string::const_iterator _end,
std::string& _tagString,
DocTagType _tagType,
bool _appending)
{
auto nlPos = std::find(_pos, _end, '\n');
if (_appending && _pos < _end && *_pos != ' ')
_tagString += " ";
std::copy(_pos, nlPos, back_inserter(_tagString));
m_lastTag = _tagType;
return skipLineOrEOS(nlPos, _end);
}
std::string::const_iterator InterfaceHandler::parseDocTagParam(std::string::const_iterator _pos,
std::string::const_iterator _end)
{
// find param name
auto currPos = std::find(_pos, _end, ' ');
if (currPos == _end)
BOOST_THROW_EXCEPTION(DocstringParsingError() << errinfo_comment("End of param name not found" + std::string(_pos, _end)));
auto paramName = std::string(_pos, currPos);
currPos += 1;
auto nlPos = std::find(currPos, _end, '\n');
auto paramDesc = std::string(currPos, nlPos);
m_params.push_back(std::make_pair(paramName, paramDesc));
m_lastTag = DocTagType::Param;
return skipLineOrEOS(nlPos, _end);
}
std::string::const_iterator InterfaceHandler::appendDocTagParam(std::string::const_iterator _pos,
std::string::const_iterator _end)
{
// Should never be called with an empty vector
solAssert(!m_params.empty(), "Internal: Tried to append to empty parameter");
auto pair = m_params.back();
if (_pos < _end && *_pos != ' ')
pair.second += " ";
auto nlPos = std::find(_pos, _end, '\n');
std::copy(_pos, nlPos, back_inserter(pair.second));
m_params.at(m_params.size() - 1) = pair;
return skipLineOrEOS(nlPos, _end);
}
std::string::const_iterator InterfaceHandler::parseDocTag(std::string::const_iterator _pos,
std::string::const_iterator _end,
std::string const& _tag,
CommentOwner _owner)
{
// LTODO: need to check for @(start of a tag) between here and the end of line
// for all cases. Also somehow automate list of acceptable tags for each
// language construct since current way does not scale well.
if (m_lastTag == DocTagType::None || _tag != "")
{
if (_tag == "dev")
return parseDocTagLine(_pos, _end, m_dev, DocTagType::Dev, false);
else if (_tag == "notice")
return parseDocTagLine(_pos, _end, m_notice, DocTagType::Notice, false);
else if (_tag == "return")
return parseDocTagLine(_pos, _end, m_return, DocTagType::Return, false);
else if (_tag == "author")
{
if (_owner == CommentOwner::Contract)
return parseDocTagLine(_pos, _end, m_contractAuthor, DocTagType::Author, false);
else if (_owner == CommentOwner::Function)
return parseDocTagLine(_pos, _end, m_author, DocTagType::Author, false);
else
// LTODO: for now this else makes no sense but later comments will go to more language constructs
BOOST_THROW_EXCEPTION(DocstringParsingError() << errinfo_comment("@author tag is legal only for contracts"));
}
else if (_tag == "title")
{
if (_owner == CommentOwner::Contract)
return parseDocTagLine(_pos, _end, m_title, DocTagType::Title, false);
else
// LTODO: Unknown tag, throw some form of warning and not just an exception
BOOST_THROW_EXCEPTION(DocstringParsingError() << errinfo_comment("@title tag is legal only for contracts"));
}
else if (_tag == "param")
return parseDocTagParam(_pos, _end);
else
// LTODO: Unknown tag, throw some form of warning and not just an exception
BOOST_THROW_EXCEPTION(DocstringParsingError() << errinfo_comment("Unknown tag " + _tag + " encountered"));
}
else
return appendDocTag(_pos, _end, _owner);
}
std::string::const_iterator InterfaceHandler::appendDocTag(std::string::const_iterator _pos,
std::string::const_iterator _end,
CommentOwner _owner)
{
switch (m_lastTag)
{
case DocTagType::Dev:
return parseDocTagLine(_pos, _end, m_dev, DocTagType::Dev, true);
case DocTagType::Notice:
return parseDocTagLine(_pos, _end, m_notice, DocTagType::Notice, true);
case DocTagType::Return:
return parseDocTagLine(_pos, _end, m_return, DocTagType::Return, true);
case DocTagType::Author:
if (_owner == CommentOwner::Contract)
return parseDocTagLine(_pos, _end, m_contractAuthor, DocTagType::Author, true);
else if (_owner == CommentOwner::Function)
return parseDocTagLine(_pos, _end, m_author, DocTagType::Author, true);
else
// LTODO: Unknown tag, throw some form of warning and not just an exception
BOOST_THROW_EXCEPTION(DocstringParsingError() << errinfo_comment("@author tag in illegal comment"));
case DocTagType::Title:
if (_owner == CommentOwner::Contract)
return parseDocTagLine(_pos, _end, m_title, DocTagType::Title, true);
else
// LTODO: Unknown tag, throw some form of warning and not just an exception
BOOST_THROW_EXCEPTION(DocstringParsingError() << errinfo_comment("@title tag in illegal comment"));
case DocTagType::Param:
return appendDocTagParam(_pos, _end);
default:
BOOST_THROW_EXCEPTION(InternalCompilerError() << errinfo_comment("Internal: Illegal documentation tag type"));
break;
}
}
static inline std::string::const_iterator getFirstSpaceOrNl(std::string::const_iterator _pos,
std::string::const_iterator _end)
{
auto spacePos = std::find(_pos, _end, ' ');
auto nlPos = std::find(_pos, _end, '\n');
return (spacePos < nlPos) ? spacePos : nlPos;
}
void InterfaceHandler::parseDocString(std::string const& _string, CommentOwner _owner)
{
auto currPos = _string.begin();
auto end = _string.end();
while (currPos != end)
{
auto tagPos = std::find(currPos, end, '@');
auto nlPos = std::find(currPos, end, '\n');
if (tagPos != end && tagPos < nlPos)
{
// we found a tag
auto tagNameEndPos = getFirstSpaceOrNl(tagPos, end);
if (tagNameEndPos == end)
BOOST_THROW_EXCEPTION(DocstringParsingError() <<
errinfo_comment("End of tag " + std::string(tagPos, tagNameEndPos) + "not found"));
currPos = parseDocTag(tagNameEndPos + 1, end, std::string(tagPos + 1, tagNameEndPos), _owner);
}
else if (m_lastTag != DocTagType::None) // continuation of the previous tag
currPos = appendDocTag(currPos, end, _owner);
else if (currPos != end)
{
// if it begins without a tag then consider it as @notice
if (currPos == _string.begin())
{
currPos = parseDocTag(currPos, end, "notice", CommentOwner::Function);
continue;
}
else if (nlPos == end) //end of text
return;
// else skip the line if a newline was found and we get here
currPos = nlPos + 1;
}
}
}
} //solidity NS
} // dev NS

125
InterfaceHandler.h
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@ -1,125 +0,0 @@
/*
This file is part of cpp-ethereum.
cpp-ethereum is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
cpp-ethereum is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @author Lefteris <lefteris@ethdev.com>
* @date 2014
* Takes the parsed AST and produces the Natspec
* documentation and the ABI interface
* https://github.com/ethereum/wiki/wiki/Ethereum-Natural-Specification-Format
*
* Can generally deal with JSON files
*/
#pragma once
#include <string>
#include <memory>
#include <json/json.h>
namespace dev
{
namespace solidity
{
// Forward declarations
class ContractDefinition;
enum class DocumentationType: uint8_t;
enum class DocTagType: uint8_t
{
None = 0,
Dev,
Notice,
Param,
Return,
Author,
Title
};
enum class CommentOwner
{
Contract,
Function
};
class InterfaceHandler
{
public:
InterfaceHandler();
/// Get the given type of documentation
/// @param _contractDef The contract definition
/// @param _type The type of the documentation. Can be one of the
/// types provided by @c DocumentationType
/// @return A unique pointer contained string with the json
/// representation of provided type
std::unique_ptr<std::string> getDocumentation(ContractDefinition const& _contractDef,
DocumentationType _type);
/// Get the ABI Interface of the contract
/// @param _contractDef The contract definition
/// @return A unique pointer contained string with the json
/// representation of the contract's ABI Interface
std::unique_ptr<std::string> getABIInterface(ContractDefinition const& _contractDef);
std::unique_ptr<std::string> getABISolidityInterface(ContractDefinition const& _contractDef);
/// Get the User documentation of the contract
/// @param _contractDef The contract definition
/// @return A unique pointer contained string with the json
/// representation of the contract's user documentation
std::unique_ptr<std::string> getUserDocumentation(ContractDefinition const& _contractDef);
/// Get the Developer's documentation of the contract
/// @param _contractDef The contract definition
/// @return A unique pointer contained string with the json
/// representation of the contract's developer documentation
std::unique_ptr<std::string> getDevDocumentation(ContractDefinition const& _contractDef);
private:
void resetUser();
void resetDev();
std::string::const_iterator parseDocTagLine(std::string::const_iterator _pos,
std::string::const_iterator _end,
std::string& _tagString,
DocTagType _tagType,
bool _appending);
std::string::const_iterator parseDocTagParam(std::string::const_iterator _pos,
std::string::const_iterator _end);
std::string::const_iterator appendDocTagParam(std::string::const_iterator _pos,
std::string::const_iterator _end);
void parseDocString(std::string const& _string, CommentOwner _owner);
std::string::const_iterator appendDocTag(std::string::const_iterator _pos,
std::string::const_iterator _end,
CommentOwner _owner);
std::string::const_iterator parseDocTag(std::string::const_iterator _pos,
std::string::const_iterator _end,
std::string const& _tag,
CommentOwner _owner);
Json::StyledWriter m_writer;
// internal state
DocTagType m_lastTag;
std::string m_notice;
std::string m_dev;
std::string m_return;
std::string m_contractAuthor;
std::string m_author;
std::string m_title;
std::vector<std::pair<std::string, std::string>> m_params;
};
} //solidity NS
} // dev NS

384
NameAndTypeResolver.cpp
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@ -1,384 +0,0 @@
/*
This file is part of cpp-ethereum.
cpp-ethereum is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
cpp-ethereum is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @author Christian <c@ethdev.com>
* @date 2014
* Parser part that determines the declarations corresponding to names and the types of expressions.
*/
#include <libsolidity/NameAndTypeResolver.h>
#include <libsolidity/AST.h>
#include <libsolidity/Exceptions.h>
using namespace std;
namespace dev
{
namespace solidity
{
NameAndTypeResolver::NameAndTypeResolver(std::vector<Declaration const*> const& _globals)
{
for (Declaration const* declaration: _globals)
m_scopes[nullptr].registerDeclaration(*declaration);
}
void NameAndTypeResolver::registerDeclarations(SourceUnit& _sourceUnit)
{
// The helper registers all declarations in m_scopes as a side-effect of its construction.
DeclarationRegistrationHelper registrar(m_scopes, _sourceUnit);
}
void NameAndTypeResolver::resolveNamesAndTypes(ContractDefinition& _contract)
{
m_currentScope = &m_scopes[nullptr];
for (ASTPointer<InheritanceSpecifier> const& baseContract: _contract.getBaseContracts())
ReferencesResolver resolver(*baseContract, *this, &_contract, nullptr);
m_currentScope = &m_scopes[&_contract];
linearizeBaseContracts(_contract);
for (ContractDefinition const* base: _contract.getLinearizedBaseContracts())
importInheritedScope(*base);
for (ASTPointer<StructDefinition> const& structDef: _contract.getDefinedStructs())
ReferencesResolver resolver(*structDef, *this, &_contract, nullptr);
for (ASTPointer<EnumDefinition> const& enumDef: _contract.getDefinedEnums())
ReferencesResolver resolver(*enumDef, *this, &_contract, nullptr);
for (ASTPointer<VariableDeclaration> const& variable: _contract.getStateVariables())
ReferencesResolver resolver(*variable, *this, &_contract, nullptr);
for (ASTPointer<EventDefinition> const& event: _contract.getEvents())
ReferencesResolver resolver(*event, *this, &_contract, nullptr);
for (ASTPointer<ModifierDefinition> const& modifier: _contract.getFunctionModifiers())
{
m_currentScope = &m_scopes[modifier.get()];
ReferencesResolver resolver(*modifier, *this, &_contract, nullptr);
}
for (ASTPointer<FunctionDefinition> const& function: _contract.getDefinedFunctions())
{
m_currentScope = &m_scopes[function.get()];
ReferencesResolver referencesResolver(*function, *this, &_contract,
function->getReturnParameterList().get());
}
}
void NameAndTypeResolver::checkTypeRequirements(ContractDefinition& _contract)
{
for (ASTPointer<StructDefinition> const& structDef: _contract.getDefinedStructs())
structDef->checkValidityOfMembers();
_contract.checkTypeRequirements();
}
void NameAndTypeResolver::updateDeclaration(Declaration const& _declaration)
{
m_scopes[nullptr].registerDeclaration(_declaration, false, true);
solAssert(_declaration.getScope() == nullptr, "Updated declaration outside global scope.");
}
Declaration const* NameAndTypeResolver::resolveName(ASTString const& _name, Declaration const* _scope) const
{
auto iterator = m_scopes.find(_scope);
if (iterator == end(m_scopes))
return nullptr;
return iterator->second.resolveName(_name, false);
}
Declaration const* NameAndTypeResolver::getNameFromCurrentScope(ASTString const& _name, bool _recursive)
{
return m_currentScope->resolveName(_name, _recursive);
}
void NameAndTypeResolver::importInheritedScope(ContractDefinition const& _base)
{
auto iterator = m_scopes.find(&_base);
solAssert(iterator != end(m_scopes), "");
for (auto const& nameAndDeclaration: iterator->second.getDeclarations())
{
Declaration const* declaration = nameAndDeclaration.second;
// Import if it was declared in the base, is not the constructor and is visible in derived classes
if (declaration->getScope() == &_base && declaration->getName() != _base.getName() &&
declaration->isVisibleInDerivedContracts())
m_currentScope->registerDeclaration(*declaration);
}
}
void NameAndTypeResolver::linearizeBaseContracts(ContractDefinition& _contract) const
{
// order in the lists is from derived to base
// list of lists to linearize, the last element is the list of direct bases
list<list<ContractDefinition const*>> input(1, {});
for (ASTPointer<InheritanceSpecifier> const& baseSpecifier: _contract.getBaseContracts())
{
ASTPointer<Identifier> baseName = baseSpecifier->getName();
ContractDefinition const* base = dynamic_cast<ContractDefinition const*>(
baseName->getReferencedDeclaration());
if (!base)
BOOST_THROW_EXCEPTION(baseName->createTypeError("Contract expected."));
// "push_front" has the effect that bases mentioned later can overwrite members of bases
// mentioned earlier
input.back().push_front(base);
vector<ContractDefinition const*> const& basesBases = base->getLinearizedBaseContracts();
if (basesBases.empty())
BOOST_THROW_EXCEPTION(baseName->createTypeError("Definition of base has to precede definition of derived contract"));
input.push_front(list<ContractDefinition const*>(basesBases.begin(), basesBases.end()));
}
input.back().push_front(&_contract);
vector<ContractDefinition const*> result = cThreeMerge(input);
if (result.empty())
BOOST_THROW_EXCEPTION(_contract.createTypeError("Linearization of inheritance graph impossible"));
_contract.setLinearizedBaseContracts(result);
}
template <class _T>
vector<_T const*> NameAndTypeResolver::cThreeMerge(list<list<_T const*>>& _toMerge)
{
// returns true iff _candidate appears only as last element of the lists
auto appearsOnlyAtHead = [&](_T const* _candidate) -> bool
{
for (list<_T const*> const& bases: _toMerge)
{
solAssert(!bases.empty(), "");
if (find(++bases.begin(), bases.end(), _candidate) != bases.end())
return false;
}
return true;
};
// returns the next candidate to append to the linearized list or nullptr on failure
auto nextCandidate = [&]() -> _T const*
{
for (list<_T const*> const& bases: _toMerge)
{
solAssert(!bases.empty(), "");
if (appearsOnlyAtHead(bases.front()))
return bases.front();
}
return nullptr;
};
// removes the given contract from all lists
auto removeCandidate = [&](_T const* _candidate)
{
for (auto it = _toMerge.begin(); it != _toMerge.end();)
{
it->remove(_candidate);
if (it->empty())
it = _toMerge.erase(it);
else
++it;
}
};
_toMerge.remove_if([](list<_T const*> const& _bases) { return _bases.empty(); });
vector<_T const*> result;
while (!_toMerge.empty())
{
_T const* candidate = nextCandidate();
if (!candidate)
return vector<_T const*>();
result.push_back(candidate);
removeCandidate(candidate);
}
return result;
}
DeclarationRegistrationHelper::DeclarationRegistrationHelper(map<ASTNode const*, DeclarationContainer>& _scopes,
ASTNode& _astRoot):
m_scopes(_scopes), m_currentScope(nullptr)
{
_astRoot.accept(*this);
}
bool DeclarationRegistrationHelper::visit(ContractDefinition& _contract)
{
registerDeclaration(_contract, true);
return true;
}
void DeclarationRegistrationHelper::endVisit(ContractDefinition&)
{
closeCurrentScope();
}
bool DeclarationRegistrationHelper::visit(StructDefinition& _struct)
{
registerDeclaration(_struct, true);
return true;
}
void DeclarationRegistrationHelper::endVisit(StructDefinition&)
{
closeCurrentScope();
}
bool DeclarationRegistrationHelper::visit(EnumDefinition& _enum)
{
registerDeclaration(_enum, true);
return true;
}
void DeclarationRegistrationHelper::endVisit(EnumDefinition&)
{
closeCurrentScope();
}
bool DeclarationRegistrationHelper::visit(EnumValue& _value)
{
registerDeclaration(_value, false);
return true;
}
bool DeclarationRegistrationHelper::visit(FunctionDefinition& _function)
{
registerDeclaration(_function, true);
m_currentFunction = &_function;
return true;
}
void DeclarationRegistrationHelper::endVisit(FunctionDefinition&)
{
m_currentFunction = nullptr;
closeCurrentScope();
}
bool DeclarationRegistrationHelper::visit(ModifierDefinition& _modifier)
{
registerDeclaration(_modifier, true);
m_currentFunction = &_modifier;
return true;
}
void DeclarationRegistrationHelper::endVisit(ModifierDefinition&)
{
m_currentFunction = nullptr;
closeCurrentScope();
}
void DeclarationRegistrationHelper::endVisit(VariableDefinition& _variableDefinition)
{
// Register the local variables with the function
// This does not fit here perfectly, but it saves us another AST visit.
solAssert(m_currentFunction, "Variable definition without function.");
m_currentFunction->addLocalVariable(_variableDefinition.getDeclaration());
}
bool DeclarationRegistrationHelper::visit(VariableDeclaration& _declaration)
{
registerDeclaration(_declaration, false);
return true;
}
bool DeclarationRegistrationHelper::visit(EventDefinition& _event)
{
registerDeclaration(_event, true);
return true;
}
void DeclarationRegistrationHelper::endVisit(EventDefinition&)
{
closeCurrentScope();
}
void DeclarationRegistrationHelper::enterNewSubScope(Declaration const& _declaration)
{
map<ASTNode const*, DeclarationContainer>::iterator iter;
bool newlyAdded;
tie(iter, newlyAdded) = m_scopes.emplace(&_declaration, DeclarationContainer(m_currentScope, &m_scopes[m_currentScope]));
solAssert(newlyAdded, "Unable to add new scope.");
m_currentScope = &_declaration;
}
void DeclarationRegistrationHelper::closeCurrentScope()
{
solAssert(m_currentScope, "Closed non-existing scope.");
m_currentScope = m_scopes[m_currentScope].getEnclosingDeclaration();
}
void DeclarationRegistrationHelper::registerDeclaration(Declaration& _declaration, bool _opensScope)
{
if (!m_scopes[m_currentScope].registerDeclaration(_declaration, !_declaration.isVisibleInContract()))
BOOST_THROW_EXCEPTION(DeclarationError() << errinfo_sourceLocation(_declaration.getLocation())
<< errinfo_comment("Identifier already declared."));
//@todo the exception should also contain the location of the first declaration
_declaration.setScope(m_currentScope);
if (_opensScope)
enterNewSubScope(_declaration);
}
ReferencesResolver::ReferencesResolver(ASTNode& _root, NameAndTypeResolver& _resolver,
ContractDefinition const* _currentContract,
ParameterList const* _returnParameters, bool _allowLazyTypes):
m_resolver(_resolver), m_currentContract(_currentContract),
m_returnParameters(_returnParameters), m_allowLazyTypes(_allowLazyTypes)
{
_root.accept(*this);
}
void ReferencesResolver::endVisit(VariableDeclaration& _variable)
{
// endVisit because the internal type needs resolving if it is a user defined type
// or mapping
if (_variable.getTypeName())
{
TypePointer type = _variable.getTypeName()->toType();
// All byte array parameter types should point to call data
if (_variable.isExternalFunctionParameter())
if (auto const* byteArrayType = dynamic_cast<ByteArrayType const*>(type.get()))
type = byteArrayType->copyForLocation(ByteArrayType::Location::CallData);
_variable.setType(type);
if (!_variable.getType())
BOOST_THROW_EXCEPTION(_variable.getTypeName()->createTypeError("Invalid type name"));
}
else if (!m_allowLazyTypes)
BOOST_THROW_EXCEPTION(_variable.createTypeError("Explicit type needed."));
// otherwise we have a "var"-declaration whose type is resolved by the first assignment
}
bool ReferencesResolver::visit(Return& _return)
{
_return.setFunctionReturnParameters(m_returnParameters);
return true;
}
bool ReferencesResolver::visit(Mapping&)
{
return true;
}
bool ReferencesResolver::visit(UserDefinedTypeName& _typeName)
{
Declaration const* declaration = m_resolver.getNameFromCurrentScope(_typeName.getName());
if (!declaration)
BOOST_THROW_EXCEPTION(DeclarationError() << errinfo_sourceLocation(_typeName.getLocation())
<< errinfo_comment("Undeclared identifier."));
_typeName.setReferencedDeclaration(*declaration);
return false;
}
bool ReferencesResolver::visit(Identifier& _identifier)
{
Declaration const* declaration = m_resolver.getNameFromCurrentScope(_identifier.getName());
if (!declaration)
BOOST_THROW_EXCEPTION(DeclarationError() << errinfo_sourceLocation(_identifier.getLocation())
<< errinfo_comment("Undeclared identifier."));
_identifier.setReferencedDeclaration(*declaration, m_currentContract);
return false;
}
}
}

148
NameAndTypeResolver.h
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@ -1,148 +0,0 @@
/*
This file is part of cpp-ethereum.
cpp-ethereum is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
cpp-ethereum is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @author Christian <c@ethdev.com>
* @date 2014
* Parser part that determines the declarations corresponding to names and the types of expressions.
*/
#pragma once
#include <map>
#include <list>
#include <boost/noncopyable.hpp>
#include <libsolidity/DeclarationContainer.h>
#include <libsolidity/ASTVisitor.h>
namespace dev
{
namespace solidity
{
/**
* Resolves name references, types and checks types of all expressions.
* Specifically, it checks that all operations are valid for the inferred types.
* An exception is throw on the first error.
*/
class NameAndTypeResolver: private boost::noncopyable
{
public:
explicit NameAndTypeResolver(std::vector<Declaration const*> const& _globals);
/// Registers all declarations found in the source unit.
void registerDeclarations(SourceUnit& _sourceUnit);
/// Resolves all names and types referenced from the given contract.
void resolveNamesAndTypes(ContractDefinition& _contract);
/// Check all type requirements in the given contract.
void checkTypeRequirements(ContractDefinition& _contract);
/// Updates the given global declaration (used for "this"). Not to be used with declarations
/// that create their own scope.
void updateDeclaration(Declaration const& _declaration);
/// Resolves the given @a _name inside the scope @a _scope. If @a _scope is omitted,
/// the global scope is used (i.e. the one containing only the contract).
/// @returns a pointer to the declaration on success or nullptr on failure.
Declaration const* resolveName(ASTString const& _name, Declaration const* _scope = nullptr) const;
/// Resolves a name in the "current" scope. Should only be called during the initial
/// resolving phase.
Declaration const* getNameFromCurrentScope(ASTString const& _name, bool _recursive = true);
private:
void reset();
/// Imports all members declared directly in the given contract (i.e. does not import inherited
/// members) into the current scope if they are not present already.
void importInheritedScope(ContractDefinition const& _base);
/// Computes "C3-Linearization" of base contracts and stores it inside the contract.
void linearizeBaseContracts(ContractDefinition& _contract) const;
/// Computes the C3-merge of the given list of lists of bases.
/// @returns the linearized vector or an empty vector if linearization is not possible.
template <class _T>
static std::vector<_T const*> cThreeMerge(std::list<std::list<_T const*>>& _toMerge);
/// Maps nodes declaring a scope to scopes, i.e. ContractDefinition and FunctionDeclaration,
/// where nullptr denotes the global scope. Note that structs are not scope since they do
/// not contain code.
std::map<ASTNode const*, DeclarationContainer> m_scopes;
DeclarationContainer* m_currentScope = nullptr;
};
/**
* Traverses the given AST upon construction and fills _scopes with all declarations inside the
* AST.
*/
class DeclarationRegistrationHelper: private ASTVisitor
{
public:
DeclarationRegistrationHelper(std::map<ASTNode const*, DeclarationContainer>& _scopes, ASTNode& _astRoot);
private:
bool visit(ContractDefinition& _contract) override;
void endVisit(ContractDefinition& _contract) override;
bool visit(StructDefinition& _struct) override;
void endVisit(StructDefinition& _struct) override;
bool visit(EnumDefinition& _enum) override;
void endVisit(EnumDefinition& _enum) override;
bool visit(EnumValue& _value) override;
bool visit(FunctionDefinition& _function) override;
void endVisit(FunctionDefinition& _function) override;
bool visit(ModifierDefinition& _modifier) override;
void endVisit(ModifierDefinition& _modifier) override;
void endVisit(VariableDefinition& _variableDefinition) override;
bool visit(VariableDeclaration& _declaration) override;
bool visit(EventDefinition& _event) override;
void endVisit(EventDefinition& _event) override;
void enterNewSubScope(Declaration const& _declaration);
void closeCurrentScope();
void registerDeclaration(Declaration& _declaration, bool _opensScope);
std::map<ASTNode const*, DeclarationContainer>& m_scopes;
Declaration const* m_currentScope;
VariableScope* m_currentFunction;
};
/**
* Resolves references to declarations (of variables and types) and also establishes the link
* between a return statement and the return parameter list.
*/
class ReferencesResolver: private ASTVisitor
{
public:
ReferencesResolver(ASTNode& _root, NameAndTypeResolver& _resolver,
ContractDefinition const* _currentContract,
ParameterList const* _returnParameters,
bool _allowLazyTypes = true);
private:
virtual void endVisit(VariableDeclaration& _variable) override;
virtual bool visit(Identifier& _identifier) override;
virtual bool visit(UserDefinedTypeName& _typeName) override;
virtual bool visit(Mapping&) override;
virtual bool visit(Return& _return) override;
NameAndTypeResolver& m_resolver;
ContractDefinition const* m_currentContract;
ParameterList const* m_returnParameters;
bool m_allowLazyTypes;
};
}
}

883
Parser.cpp
View File

@ -1,883 +0,0 @@
/*
This file is part of cpp-ethereum.
cpp-ethereum is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
cpp-ethereum is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @author Christian <c@ethdev.com>
* @date 2014
* Solidity parser.
*/
#include <vector>
#include <libdevcore/Log.h>
#include <libsolidity/BaseTypes.h>
#include <libsolidity/Parser.h>
#include <libsolidity/Scanner.h>
#include <libsolidity/Exceptions.h>
using namespace std;
namespace dev
{
namespace solidity
{
/// AST node factory that also tracks the begin and end position of an AST node
/// while it is being parsed
class Parser::ASTNodeFactory
{
public:
ASTNodeFactory(Parser const& _parser):
m_parser(_parser), m_location(_parser.getPosition(), -1, _parser.getSourceName()) {}
void markEndPosition() { m_location.end = m_parser.getEndPosition(); }
void setLocationEmpty() { m_location.end = m_location.start; }
/// Set the end position to the one of the given node.
void setEndPositionFromNode(ASTPointer<ASTNode> const& _node) { m_location.end = _node->getLocation().end; }
template <class NodeType, typename... Args>
ASTPointer<NodeType> createNode(Args&& ... _args)
{
if (m_location.end < 0)
markEndPosition();
return make_shared<NodeType>(m_location, forward<Args>(_args)...);
}
private:
Parser const& m_parser;
Location m_location;
};
ASTPointer<SourceUnit> Parser::parse(shared_ptr<Scanner> const& _scanner)
{
m_scanner = _scanner;
ASTNodeFactory nodeFactory(*this);
vector<ASTPointer<ASTNode>> nodes;
while (_scanner->getCurrentToken() != Token::EOS)
{
switch (m_scanner->getCurrentToken())
{
case Token::Import:
nodes.push_back(parseImportDirective());
break;
case Token::Contract:
nodes.push_back(parseContractDefinition());
break;
default:
BOOST_THROW_EXCEPTION(createParserError(std::string("Expected import directive or contract definition.")));
}
}
return nodeFactory.createNode<SourceUnit>(nodes);
}
std::shared_ptr<const string> const& Parser::getSourceName() const
{
return m_scanner->getSourceName();
}
int Parser::getPosition() const
{
return m_scanner->getCurrentLocation().start;
}
int Parser::getEndPosition() const
{
return m_scanner->getCurrentLocation().end;
}
ASTPointer<ImportDirective> Parser::parseImportDirective()
{
ASTNodeFactory nodeFactory(*this);
expectToken(Token::Import);
if (m_scanner->getCurrentToken() != Token::StringLiteral)
BOOST_THROW_EXCEPTION(createParserError("Expected string literal (URL)."));
ASTPointer<ASTString> url = getLiteralAndAdvance();
nodeFactory.markEndPosition();
expectToken(Token::Semicolon);
return nodeFactory.createNode<ImportDirective>(url);
}
ASTPointer<ContractDefinition> Parser::parseContractDefinition()
{
ASTNodeFactory nodeFactory(*this);
ASTPointer<ASTString> docString;
if (m_scanner->getCurrentCommentLiteral() != "")
docString = make_shared<ASTString>(m_scanner->getCurrentCommentLiteral());
expectToken(Token::Contract);
ASTPointer<ASTString> name = expectIdentifierToken();
vector<ASTPointer<InheritanceSpecifier>> baseContracts;
vector<ASTPointer<StructDefinition>> structs;
vector<ASTPointer<EnumDefinition>> enums;
vector<ASTPointer<VariableDeclaration>> stateVariables;
vector<ASTPointer<FunctionDefinition>> functions;
vector<ASTPointer<ModifierDefinition>> modifiers;
vector<ASTPointer<EventDefinition>> events;
if (m_scanner->getCurrentToken() == Token::Is)
do
{
m_scanner->next();
baseContracts.push_back(parseInheritanceSpecifier());
}
while (m_scanner->getCurrentToken() == Token::Comma);
expectToken(Token::LBrace);
while (true)
{
Token::Value currentToken = m_scanner->getCurrentToken();
if (currentToken == Token::RBrace)
break;
else if (currentToken == Token::Function)
functions.push_back(parseFunctionDefinition(name.get()));
else if (currentToken == Token::Struct)
structs.push_back(parseStructDefinition());
else if (currentToken == Token::Enum)
enums.push_back(parseEnumDefinition());
else if (currentToken == Token::Identifier || currentToken == Token::Mapping ||
Token::isElementaryTypeName(currentToken))
{
VarDeclParserOptions options;
options.isStateVariable = true;
stateVariables.push_back(parseVariableDeclaration(options));
expectToken(Token::Semicolon);
}
else if (currentToken == Token::Modifier)
modifiers.push_back(parseModifierDefinition());
else if (currentToken == Token::Event)
events.push_back(parseEventDefinition());
else
BOOST_THROW_EXCEPTION(createParserError("Function, variable, struct or modifier declaration expected."));
}
nodeFactory.markEndPosition();
expectToken(Token::RBrace);
return nodeFactory.createNode<ContractDefinition>(name, docString, baseContracts, structs, enums,
stateVariables, functions, modifiers, events);
}
ASTPointer<InheritanceSpecifier> Parser::parseInheritanceSpecifier()
{
ASTNodeFactory nodeFactory(*this);
ASTPointer<Identifier> name(parseIdentifier());
vector<ASTPointer<Expression>> arguments;
if (m_scanner->getCurrentToken() == Token::LParen)
{
m_scanner->next();
arguments = parseFunctionCallListArguments();
nodeFactory.markEndPosition();
expectToken(Token::RParen);
}
else
nodeFactory.setEndPositionFromNode(name);
return nodeFactory.createNode<InheritanceSpecifier>(name, arguments);
}
Declaration::Visibility Parser::parseVisibilitySpecifier(Token::Value _token)
{
Declaration::Visibility visibility(Declaration::Visibility::Default);
if (_token == Token::Public)
visibility = Declaration::Visibility::Public;
else if (_token == Token::Inheritable)
visibility = Declaration::Visibility::Inheritable;
else if (_token == Token::Private)
visibility = Declaration::Visibility::Private;
else if (_token == Token::External)
visibility = Declaration::Visibility::External;
else
solAssert(false, "Invalid visibility specifier.");
m_scanner->next();
return visibility;
}
ASTPointer<FunctionDefinition> Parser::parseFunctionDefinition(ASTString const* _contractName)
{
ASTNodeFactory nodeFactory(*this);
ASTPointer<ASTString> docstring;
if (m_scanner->getCurrentCommentLiteral() != "")
docstring = make_shared<ASTString>(m_scanner->getCurrentCommentLiteral());
expectToken(Token::Function);
ASTPointer<ASTString> name;
if (m_scanner->getCurrentToken() == Token::LParen)
name = make_shared<ASTString>(); // anonymous function
else
name = expectIdentifierToken();
ASTPointer<ParameterList> parameters(parseParameterList());
bool isDeclaredConst = false;
Declaration::Visibility visibility(Declaration::Visibility::Default);
vector<ASTPointer<ModifierInvocation>> modifiers;
while (true)
{
Token::Value token = m_scanner->getCurrentToken();
if (token == Token::Const)
{
isDeclaredConst = true;
m_scanner->next();
}
else if (token == Token::Identifier)
modifiers.push_back(parseModifierInvocation());
else if (Token::isVisibilitySpecifier(token))
{
if (visibility != Declaration::Visibility::Default)
BOOST_THROW_EXCEPTION(createParserError("Multiple visibility specifiers."));
visibility = parseVisibilitySpecifier(token);
}
else
break;
}
ASTPointer<ParameterList> returnParameters;
if (m_scanner->getCurrentToken() == Token::Returns)
{
bool const permitEmptyParameterList = false;
m_scanner->next();
returnParameters = parseParameterList(permitEmptyParameterList);
}
else
returnParameters = createEmptyParameterList();
ASTPointer<Block> block = parseBlock();
nodeFactory.setEndPositionFromNode(block);
bool const c_isConstructor = (_contractName && *name == *_contractName);
return nodeFactory.createNode<FunctionDefinition>(name, visibility, c_isConstructor, docstring,
parameters, isDeclaredConst, modifiers,
returnParameters, block);
}
ASTPointer<StructDefinition> Parser::parseStructDefinition()
{
ASTNodeFactory nodeFactory(*this);
expectToken(Token::Struct);
ASTPointer<ASTString> name = expectIdentifierToken();
vector<ASTPointer<VariableDeclaration>> members;
expectToken(Token::LBrace);
while (m_scanner->getCurrentToken() != Token::RBrace)
{
members.push_back(parseVariableDeclaration());
expectToken(Token::Semicolon);
}
nodeFactory.markEndPosition();
expectToken(Token::RBrace);
return nodeFactory.createNode<StructDefinition>(name, members);
}
ASTPointer<EnumValue> Parser::parseEnumValue()
{
ASTNodeFactory nodeFactory(*this);
nodeFactory.markEndPosition();
return nodeFactory.createNode<EnumValue>(expectIdentifierToken());
}
ASTPointer<EnumDefinition> Parser::parseEnumDefinition()
{
ASTNodeFactory nodeFactory(*this);
expectToken(Token::Enum);
ASTPointer<ASTString> name = expectIdentifierToken();
vector<ASTPointer<EnumValue>> members;
expectToken(Token::LBrace);
while (m_scanner->getCurrentToken() != Token::RBrace)
{
members.push_back(parseEnumValue());
if (m_scanner->getCurrentToken() == Token::RBrace)
break;
expectToken(Token::Comma);
if (m_scanner->getCurrentToken() != Token::Identifier)
BOOST_THROW_EXCEPTION(createParserError("Expected Identifier after ','"));
}
nodeFactory.markEndPosition();
expectToken(Token::RBrace);
return nodeFactory.createNode<EnumDefinition>(name, members);
}
ASTPointer<VariableDeclaration> Parser::parseVariableDeclaration(VarDeclParserOptions const& _options)
{
ASTNodeFactory nodeFactory(*this);
ASTPointer<TypeName> type = parseTypeName(_options.allowVar);
if (type != nullptr)
nodeFactory.setEndPositionFromNode(type);
bool isIndexed = false;
ASTPointer<ASTString> identifier;
Token::Value token = m_scanner->getCurrentToken();
Declaration::Visibility visibility(Declaration::Visibility::Default);
if (_options.isStateVariable && Token::isVariableVisibilitySpecifier(token))
visibility = parseVisibilitySpecifier(token);
if (_options.allowIndexed && token == Token::Indexed)
{
isIndexed = true;
m_scanner->next();
}
nodeFactory.markEndPosition();
if (_options.allowEmptyName && m_scanner->getCurrentToken() != Token::Identifier)
{
identifier = make_shared<ASTString>("");
solAssert(type != nullptr, "");
nodeFactory.setEndPositionFromNode(type);
}
else
identifier = expectIdentifierToken();
return nodeFactory.createNode<VariableDeclaration>(type, identifier,
visibility, _options.isStateVariable,
isIndexed);
}
ASTPointer<ModifierDefinition> Parser::parseModifierDefinition()
{
ScopeGuard resetModifierFlag([this]() { m_insideModifier = false; });
m_insideModifier = true;
ASTNodeFactory nodeFactory(*this);
ASTPointer<ASTString> docstring;
if (m_scanner->getCurrentCommentLiteral() != "")
docstring = make_shared<ASTString>(m_scanner->getCurrentCommentLiteral());
expectToken(Token::Modifier);
ASTPointer<ASTString> name(expectIdentifierToken());
ASTPointer<ParameterList> parameters;
if (m_scanner->getCurrentToken() == Token::LParen)
parameters = parseParameterList();
else
parameters = createEmptyParameterList();
ASTPointer<Block> block = parseBlock();
nodeFactory.setEndPositionFromNode(block);
return nodeFactory.createNode<ModifierDefinition>(name, docstring, parameters, block);
}
ASTPointer<EventDefinition> Parser::parseEventDefinition()
{
ASTNodeFactory nodeFactory(*this);
ASTPointer<ASTString> docstring;
if (m_scanner->getCurrentCommentLiteral() != "")
docstring = make_shared<ASTString>(m_scanner->getCurrentCommentLiteral());
expectToken(Token::Event);
ASTPointer<ASTString> name(expectIdentifierToken());
ASTPointer<ParameterList> parameters;
if (m_scanner->getCurrentToken() == Token::LParen)
parameters = parseParameterList(true, true);
else
parameters = createEmptyParameterList();
nodeFactory.markEndPosition();
expectToken(Token::Semicolon);
return nodeFactory.createNode<EventDefinition>(name, docstring, parameters);
}
ASTPointer<ModifierInvocation> Parser::parseModifierInvocation()
{
ASTNodeFactory nodeFactory(*this);
ASTPointer<Identifier> name(parseIdentifier());
vector<ASTPointer<Expression>> arguments;
if (m_scanner->getCurrentToken() == Token::LParen)
{
m_scanner->next();
arguments = parseFunctionCallListArguments();
nodeFactory.markEndPosition();
expectToken(Token::RParen);
}
else
nodeFactory.setEndPositionFromNode(name);
return nodeFactory.createNode<ModifierInvocation>(name, arguments);
}
ASTPointer<Identifier> Parser::parseIdentifier()
{
ASTNodeFactory nodeFactory(*this);
nodeFactory.markEndPosition();
return nodeFactory.createNode<Identifier>(expectIdentifierToken());
}
ASTPointer<TypeName> Parser::parseTypeName(bool _allowVar)
{
ASTPointer<TypeName> type;
Token::Value token = m_scanner->getCurrentToken();
if (Token::isElementaryTypeName(token))
{
type = ASTNodeFactory(*this).createNode<ElementaryTypeName>(token);
m_scanner->next();
}
else if (token == Token::Var)
{
if (!_allowVar)
BOOST_THROW_EXCEPTION(createParserError("Expected explicit type name."));
m_scanner->next();
}
else if (token == Token::Mapping)
{
type = parseMapping();
}
else if (token == Token::Identifier)
{
ASTNodeFactory nodeFactory(*this);
nodeFactory.markEndPosition();
type = nodeFactory.createNode<UserDefinedTypeName>(expectIdentifierToken());
}
else
BOOST_THROW_EXCEPTION(createParserError("Expected type name"));
return type;
}
ASTPointer<Mapping> Parser::parseMapping()
{
ASTNodeFactory nodeFactory(*this);
expectToken(Token::Mapping);
expectToken(Token::LParen);
if (!Token::isElementaryTypeName(m_scanner->getCurrentToken()))
BOOST_THROW_EXCEPTION(createParserError("Expected elementary type name for mapping key type"));
ASTPointer<ElementaryTypeName> keyType;
keyType = ASTNodeFactory(*this).createNode<ElementaryTypeName>(m_scanner->getCurrentToken());
m_scanner->next();
expectToken(Token::Arrow);
bool const allowVar = false;
ASTPointer<TypeName> valueType = parseTypeName(allowVar);
nodeFactory.markEndPosition();
expectToken(Token::RParen);
return nodeFactory.createNode<Mapping>(keyType, valueType);
}
ASTPointer<ParameterList> Parser::parseParameterList(bool _allowEmpty, bool _allowIndexed)
{
ASTNodeFactory nodeFactory(*this);
vector<ASTPointer<VariableDeclaration>> parameters;
VarDeclParserOptions options;
options.allowIndexed = _allowIndexed;
options.allowEmptyName = true;
expectToken(Token::LParen);
if (!_allowEmpty || m_scanner->getCurrentToken() != Token::RParen)
{
parameters.push_back(parseVariableDeclaration(options));
while (m_scanner->getCurrentToken() != Token::RParen)
{
expectToken(Token::Comma);
parameters.push_back(parseVariableDeclaration(options));
}
}
nodeFactory.markEndPosition();
m_scanner->next();
return nodeFactory.createNode<ParameterList>(parameters);
}
ASTPointer<Block> Parser::parseBlock()
{
ASTNodeFactory nodeFactory(*this);
expectToken(Token::LBrace);
vector<ASTPointer<Statement>> statements;
while (m_scanner->getCurrentToken() != Token::RBrace)
statements.push_back(parseStatement());
nodeFactory.markEndPosition();
expectToken(Token::RBrace);
return nodeFactory.createNode<Block>(statements);
}
ASTPointer<Statement> Parser::parseStatement()
{
ASTPointer<Statement> statement;
switch (m_scanner->getCurrentToken())
{
case Token::If:
return parseIfStatement();
case Token::While:
return parseWhileStatement();
case Token::For:
return parseForStatement();
case Token::LBrace:
return parseBlock();
// starting from here, all statements must be terminated by a semicolon
case Token::Continue:
statement = ASTNodeFactory(*this).createNode<Continue>();
m_scanner->next();
break;
case Token::Break:
statement = ASTNodeFactory(*this).createNode<Break>();
m_scanner->next();
break;
case Token::Return:
{
ASTNodeFactory nodeFactory(*this);
ASTPointer<Expression> expression;
if (m_scanner->next() != Token::Semicolon)
{
expression = parseExpression();
nodeFactory.setEndPositionFromNode(expression);
}
statement = nodeFactory.createNode<Return>(expression);
break;
}
case Token::Identifier:
if (m_insideModifier && m_scanner->getCurrentLiteral() == "_")
{
statement = ASTNodeFactory(*this).createNode<PlaceholderStatement>();
m_scanner->next();
return statement;
}
// fall-through
default:
statement = parseVarDefOrExprStmt();
}
expectToken(Token::Semicolon);
return statement;
}
ASTPointer<IfStatement> Parser::parseIfStatement()
{
ASTNodeFactory nodeFactory(*this);
expectToken(Token::If);
expectToken(Token::LParen);
ASTPointer<Expression> condition = parseExpression();
expectToken(Token::RParen);
ASTPointer<Statement> trueBody = parseStatement();
ASTPointer<Statement> falseBody;
if (m_scanner->getCurrentToken() == Token::Else)
{
m_scanner->next();
falseBody = parseStatement();
nodeFactory.setEndPositionFromNode(falseBody);
}
else
nodeFactory.setEndPositionFromNode(trueBody);
return nodeFactory.createNode<IfStatement>(condition, trueBody, falseBody);
}
ASTPointer<WhileStatement> Parser::parseWhileStatement()
{
ASTNodeFactory nodeFactory(*this);
expectToken(Token::While);
expectToken(Token::LParen);
ASTPointer<Expression> condition = parseExpression();
expectToken(Token::RParen);
ASTPointer<Statement> body = parseStatement();
nodeFactory.setEndPositionFromNode(body);
return nodeFactory.createNode<WhileStatement>(condition, body);
}
ASTPointer<ForStatement> Parser::parseForStatement()
{
ASTNodeFactory nodeFactory(*this);
ASTPointer<Statement> initExpression;
ASTPointer<Expression> conditionExpression;
ASTPointer<ExpressionStatement> loopExpression;
expectToken(Token::For);
expectToken(Token::LParen);
// LTODO: Maybe here have some predicate like peekExpression() instead of checking for semicolon and RParen?
if (m_scanner->getCurrentToken() != Token::Semicolon)
initExpression = parseVarDefOrExprStmt();
expectToken(Token::Semicolon);
if (m_scanner->getCurrentToken() != Token::Semicolon)
conditionExpression = parseExpression();
expectToken(Token::Semicolon);
if (m_scanner->getCurrentToken() != Token::RParen)
loopExpression = parseExpressionStatement();
expectToken(Token::RParen);
ASTPointer<Statement> body = parseStatement();
nodeFactory.setEndPositionFromNode(body);
return nodeFactory.createNode<ForStatement>(initExpression,
conditionExpression,
loopExpression,
body);
}
ASTPointer<Statement> Parser::parseVarDefOrExprStmt()
{
if (peekVariableDefinition())
return parseVariableDefinition();
else
return parseExpressionStatement();
}
ASTPointer<VariableDefinition> Parser::parseVariableDefinition()
{
ASTNodeFactory nodeFactory(*this);
VarDeclParserOptions options;
options.allowVar = true;
ASTPointer<VariableDeclaration> variable = parseVariableDeclaration(options);
ASTPointer<Expression> value;
if (m_scanner->getCurrentToken() == Token::Assign)
{
m_scanner->next();
value = parseExpression();
nodeFactory.setEndPositionFromNode(value);
}
else
nodeFactory.setEndPositionFromNode(variable);
return nodeFactory.createNode<VariableDefinition>(variable, value);
}
ASTPointer<ExpressionStatement> Parser::parseExpressionStatement()
{
ASTNodeFactory nodeFactory(*this);
ASTPointer<Expression> expression = parseExpression();
nodeFactory.setEndPositionFromNode(expression);
return nodeFactory.createNode<ExpressionStatement>(expression);
}
ASTPointer<Expression> Parser::parseExpression()
{
ASTNodeFactory nodeFactory(*this);
ASTPointer<Expression> expression = parseBinaryExpression();
if (!Token::isAssignmentOp(m_scanner->getCurrentToken()))
return expression;
Token::Value assignmentOperator = expectAssignmentOperator();
ASTPointer<Expression> rightHandSide = parseExpression();
nodeFactory.setEndPositionFromNode(rightHandSide);
return nodeFactory.createNode<Assignment>(expression, assignmentOperator, rightHandSide);
}
ASTPointer<Expression> Parser::parseBinaryExpression(int _minPrecedence)
{
ASTNodeFactory nodeFactory(*this);
ASTPointer<Expression> expression = parseUnaryExpression();
int precedence = Token::precedence(m_scanner->getCurrentToken());
for (; precedence >= _minPrecedence; --precedence)
while (Token::precedence(m_scanner->getCurrentToken()) == precedence)
{
Token::Value op = m_scanner->getCurrentToken();
m_scanner->next();
ASTPointer<Expression> right = parseBinaryExpression(precedence + 1);
nodeFactory.setEndPositionFromNode(right);
expression = nodeFactory.createNode<BinaryOperation>(expression, op, right);
}
return expression;
}
ASTPointer<Expression> Parser::parseUnaryExpression()
{
ASTNodeFactory nodeFactory(*this);
Token::Value token = m_scanner->getCurrentToken();
if (Token::isUnaryOp(token) || Token::isCountOp(token))
{
// prefix expression
m_scanner->next();
ASTPointer<Expression> subExpression = parseUnaryExpression();
nodeFactory.setEndPositionFromNode(subExpression);
return nodeFactory.createNode<UnaryOperation>(token, subExpression, true);
}
else
{
// potential postfix expression
ASTPointer<Expression> subExpression = parseLeftHandSideExpression();
token = m_scanner->getCurrentToken();
if (!Token::isCountOp(token))
return subExpression;
nodeFactory.markEndPosition();
m_scanner->next();
return nodeFactory.createNode<UnaryOperation>(token, subExpression, false);
}
}
ASTPointer<Expression> Parser::parseLeftHandSideExpression()
{
ASTNodeFactory nodeFactory(*this);
ASTPointer<Expression> expression;
if (m_scanner->getCurrentToken() == Token::New)
{
expectToken(Token::New);
ASTPointer<Identifier> contractName(parseIdentifier());
nodeFactory.setEndPositionFromNode(contractName);
expression = nodeFactory.createNode<NewExpression>(contractName);
}
else
expression = parsePrimaryExpression();
while (true)
{
switch (m_scanner->getCurrentToken())
{
case Token::LBrack:
{
m_scanner->next();
ASTPointer<Expression> index = parseExpression();
nodeFactory.markEndPosition();
expectToken(Token::RBrack);
expression = nodeFactory.createNode<IndexAccess>(expression, index);
}
break;
case Token::Period:
{
m_scanner->next();
nodeFactory.markEndPosition();
expression = nodeFactory.createNode<MemberAccess>(expression, expectIdentifierToken());
}
break;
case Token::LParen:
{
m_scanner->next();
vector<ASTPointer<Expression>> arguments;
vector<ASTPointer<ASTString>> names;
std::tie(arguments, names) = parseFunctionCallArguments();
nodeFactory.markEndPosition();
expectToken(Token::RParen);
expression = nodeFactory.createNode<FunctionCall>(expression, arguments, names);
}
break;
default:
return expression;
}
}
}
ASTPointer<Expression> Parser::parsePrimaryExpression()
{
ASTNodeFactory nodeFactory(*this);
Token::Value token = m_scanner->getCurrentToken();
ASTPointer<Expression> expression;
switch (token)
{
case Token::TrueLiteral:
case Token::FalseLiteral:
expression = nodeFactory.createNode<Literal>(token, getLiteralAndAdvance());
break;
case Token::Number:
if (Token::isEtherSubdenomination(m_scanner->peekNextToken()))
{
ASTPointer<ASTString> literal = getLiteralAndAdvance();
nodeFactory.markEndPosition();
Literal::SubDenomination subdenomination = static_cast<Literal::SubDenomination>(m_scanner->getCurrentToken());
m_scanner->next();
expression = nodeFactory.createNode<Literal>(token, literal, subdenomination);
break;
}
// fall-through
case Token::StringLiteral:
nodeFactory.markEndPosition();
expression = nodeFactory.createNode<Literal>(token, getLiteralAndAdvance());
break;
case Token::Identifier:
nodeFactory.markEndPosition();
expression = nodeFactory.createNode<Identifier>(getLiteralAndAdvance());
break;
case Token::LParen:
{
m_scanner->next();
ASTPointer<Expression> expression = parseExpression();
expectToken(Token::RParen);
return expression;
}
default:
if (Token::isElementaryTypeName(token))
{
// used for casts
expression = nodeFactory.createNode<ElementaryTypeNameExpression>(token);
m_scanner->next();
}
else
{
BOOST_THROW_EXCEPTION(createParserError("Expected primary expression."));
return ASTPointer<Expression>(); // this is not reached
}
break;
}
return expression;
}
vector<ASTPointer<Expression>> Parser::parseFunctionCallListArguments()
{
vector<ASTPointer<Expression>> arguments;
if (m_scanner->getCurrentToken() != Token::RParen)
{
arguments.push_back(parseExpression());
while (m_scanner->getCurrentToken() != Token::RParen)
{
expectToken(Token::Comma);
arguments.push_back(parseExpression());
}
}
return arguments;
}
pair<vector<ASTPointer<Expression>>, vector<ASTPointer<ASTString>>> Parser::parseFunctionCallArguments()
{
pair<vector<ASTPointer<Expression>>, vector<ASTPointer<ASTString>>> ret;
Token::Value token = m_scanner->getCurrentToken();
if (token == Token::LBrace)
{
// call({arg1 : 1, arg2 : 2 })
expectToken(Token::LBrace);
while (m_scanner->getCurrentToken() != Token::RBrace)
{
ret.second.push_back(expectIdentifierToken());
expectToken(Token::Colon);
ret.first.push_back(parseExpression());
if (m_scanner->getCurrentToken() == Token::Comma)
expectToken(Token::Comma);
else
break;
}
expectToken(Token::RBrace);
}
else
ret.first = parseFunctionCallListArguments();
return ret;
}
bool Parser::peekVariableDefinition()
{
// distinguish between variable definition (and potentially assignment) and expression statement
// (which include assignments to other expressions and pre-declared variables)
// We have a variable definition if we get a keyword that specifies a type name, or
// in the case of a user-defined type, we have two identifiers following each other.
return (m_scanner->getCurrentToken() == Token::Mapping ||
m_scanner->getCurrentToken() == Token::Var ||
((Token::isElementaryTypeName(m_scanner->getCurrentToken()) ||
m_scanner->getCurrentToken() == Token::Identifier) &&
m_scanner->peekNextToken() == Token::Identifier));
}
void Parser::expectToken(Token::Value _value)
{
if (m_scanner->getCurrentToken() != _value)
BOOST_THROW_EXCEPTION(createParserError(string("Expected token ") + string(Token::getName(_value))));
m_scanner->next();
}
Token::Value Parser::expectAssignmentOperator()
{
Token::Value op = m_scanner->getCurrentToken();
if (!Token::isAssignmentOp(op))
BOOST_THROW_EXCEPTION(createParserError("Expected assignment operator"));
m_scanner->next();
return op;
}
ASTPointer<ASTString> Parser::expectIdentifierToken()
{
if (m_scanner->getCurrentToken() != Token::Identifier)
BOOST_THROW_EXCEPTION(createParserError("Expected identifier"));
return getLiteralAndAdvance();
}
ASTPointer<ASTString> Parser::getLiteralAndAdvance()
{
ASTPointer<ASTString> identifier = make_shared<ASTString>(m_scanner->getCurrentLiteral());
m_scanner->next();
return identifier;
}
ASTPointer<ParameterList> Parser::createEmptyParameterList()
{
ASTNodeFactory nodeFactory(*this);
nodeFactory.setLocationEmpty();
return nodeFactory.createNode<ParameterList>(vector<ASTPointer<VariableDeclaration>>());
}
ParserError Parser::createParserError(string const& _description) const
{
return ParserError() << errinfo_sourceLocation(Location(getPosition(), getPosition(), getSourceName()))
<< errinfo_comment(_description);
}
}
}

117
Parser.h
View File

@ -1,117 +0,0 @@
/*
This file is part of cpp-ethereum.
cpp-ethereum is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
cpp-ethereum is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @author Christian <c@ethdev.com>
* @date 2014
* Solidity parser.
*/
#pragma once
#include "libsolidity/AST.h"
namespace dev
{
namespace solidity
{
class Scanner;
class Parser
{
public:
ASTPointer<SourceUnit> parse(std::shared_ptr<Scanner> const& _scanner);
std::shared_ptr<std::string const> const& getSourceName() const;
private:
class ASTNodeFactory;
/// Start position of the current token
int getPosition() const;
/// End position of the current token
int getEndPosition() const;
struct VarDeclParserOptions {
VarDeclParserOptions() {}
bool allowVar = false;
bool isStateVariable = false;
bool allowIndexed = false;
bool allowEmptyName = false;
};
///@{
///@name Parsing functions for the AST nodes
ASTPointer<ImportDirective> parseImportDirective();
ASTPointer<ContractDefinition> parseContractDefinition();
ASTPointer<InheritanceSpecifier> parseInheritanceSpecifier();
Declaration::Visibility parseVisibilitySpecifier(Token::Value _token);
ASTPointer<FunctionDefinition> parseFunctionDefinition(ASTString const* _contractName);
ASTPointer<StructDefinition> parseStructDefinition();
ASTPointer<EnumDefinition> parseEnumDefinition();
ASTPointer<EnumValue> parseEnumValue();
ASTPointer<VariableDeclaration> parseVariableDeclaration(VarDeclParserOptions const& _options = VarDeclParserOptions());
ASTPointer<ModifierDefinition> parseModifierDefinition();
ASTPointer<EventDefinition> parseEventDefinition();
ASTPointer<ModifierInvocation> parseModifierInvocation();
ASTPointer<Identifier> parseIdentifier();
ASTPointer<TypeName> parseTypeName(bool _allowVar);
ASTPointer<Mapping> parseMapping();
ASTPointer<ParameterList> parseParameterList(bool _allowEmpty = true, bool _allowIndexed = false);
ASTPointer<Block> parseBlock();
ASTPointer<Statement> parseStatement();
ASTPointer<IfStatement> parseIfStatement();
ASTPointer<WhileStatement> parseWhileStatement();
ASTPointer<ForStatement> parseForStatement();
ASTPointer<Statement> parseVarDefOrExprStmt();
ASTPointer<VariableDefinition> parseVariableDefinition();
ASTPointer<ExpressionStatement> parseExpressionStatement();
ASTPointer<Expression> parseExpression();
ASTPointer<Expression> parseBinaryExpression(int _minPrecedence = 4);
ASTPointer<Expression> parseUnaryExpression();
ASTPointer<Expression> parseLeftHandSideExpression();
ASTPointer<Expression> parsePrimaryExpression();
std::vector<ASTPointer<Expression>> parseFunctionCallListArguments();
std::pair<std::vector<ASTPointer<Expression>>, std::vector<ASTPointer<ASTString>>> parseFunctionCallArguments();
///@}
///@{
///@name Helper functions
/// Peeks ahead in the scanner to determine if a variable definition is going to follow
bool peekVariableDefinition();
/// If current token value is not _value, throw exception otherwise advance token.
void expectToken(Token::Value _value);
Token::Value expectAssignmentOperator();
ASTPointer<ASTString> expectIdentifierToken();
ASTPointer<ASTString> getLiteralAndAdvance();
///@}
/// Creates an empty ParameterList at the current location (used if parameters can be omitted).
ASTPointer<ParameterList> createEmptyParameterList();
/// Creates a @ref ParserError exception and annotates it with the current position and the
/// given @a _description.
ParserError createParserError(std::string const& _description) const;
std::shared_ptr<Scanner> m_scanner;
/// Flag that signifies whether '_' is parsed as a PlaceholderStatement or a regular identifier.
bool m_insideModifier = false;
};
}
}

769
Scanner.cpp
View File

@ -1,769 +0,0 @@
/*
This file is part of cpp-ethereum.
cpp-ethereum is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
cpp-ethereum is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
This file is derived from the file "scanner.cc", which was part of the
V8 project. The original copyright header follows:
Copyright 2006-2012, the V8 project authors. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above
copyright notice, this list of conditions and the following
disclaimer in the documentation and/or other materials provided
with the distribution.
* Neither the name of Google Inc. nor the names of its
contributors may be used to endorse or promote products derived
from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/**
* @author Christian <c@ethdev.com>
* @date 2014
* Solidity scanner.
*/
#include <algorithm>
#include <tuple>
#include <libsolidity/Utils.h>
#include <libsolidity/Scanner.h>
using namespace std;
namespace dev
{
namespace solidity
{
namespace
{
bool isDecimalDigit(char c)
{
return '0' <= c && c <= '9';
}
bool isHexDigit(char c)
{
return isDecimalDigit(c)
|| ('a' <= c && c <= 'f')
|| ('A' <= c && c <= 'F');
}
bool isLineTerminator(char c)
{
return c == '\n';
}
bool isWhiteSpace(char c)
{
return c == ' ' || c == '\n' || c == '\t' || c == '\r';
}
bool isIdentifierStart(char c)
{
return c == '_' || c == '$' || ('a' <= c && c <= 'z') || ('A' <= c && c <= 'Z');
}
bool isIdentifierPart(char c)
{
return isIdentifierStart(c) || isDecimalDigit(c);
}
int hexValue(char c)
{
if (c >= '0' && c <= '9')
return c - '0';
else if (c >= 'a' && c <= 'f')
return c - 'a' + 10;
else if (c >= 'A' && c <= 'F')
return c - 'A' + 10;
else return -1;
}
} // end anonymous namespace
/// Scoped helper for literal recording. Automatically drops the literal
/// if aborting the scanning before it's complete.
enum LiteralType {
LITERAL_TYPE_STRING,
LITERAL_TYPE_NUMBER, // not really different from string type in behaviour
LITERAL_TYPE_COMMENT
};
class LiteralScope
{
public:
explicit LiteralScope(Scanner* _self, enum LiteralType _type): m_type(_type)
, m_scanner(_self)
, m_complete(false)
{
if (_type == LITERAL_TYPE_COMMENT)
m_scanner->m_nextSkippedComment.literal.clear();
else
m_scanner->m_nextToken.literal.clear();
}
~LiteralScope()
{
if (!m_complete)
{
if (m_type == LITERAL_TYPE_COMMENT)
m_scanner->m_nextSkippedComment.literal.clear();
else
m_scanner->m_nextToken.literal.clear();
}
}
void complete() { m_complete = true; }
private:
enum LiteralType m_type;
Scanner* m_scanner;
bool m_complete;
}; // end of LiteralScope class
void Scanner::reset(CharStream const& _source, string const& _sourceName)
{
m_source = _source;
m_sourceName = make_shared<string const>(_sourceName);
reset();
}
void Scanner::reset()
{
m_source.reset();
m_char = m_source.get();
skipWhitespace();
scanToken();
next();
}
bool Scanner::scanHexByte(char& o_scannedByte)
{
char x = 0;
for (int i = 0; i < 2; i++)
{
int d = hexValue(m_char);
if (d < 0)
{
rollback(i);
return false;
}
x = x * 16 + d;
advance();
}
o_scannedByte = x;
return true;
}
// Ensure that tokens can be stored in a byte.
BOOST_STATIC_ASSERT(Token::NUM_TOKENS <= 0x100);
Token::Value Scanner::next()
{
m_currentToken = m_nextToken;
m_skippedComment = m_nextSkippedComment;
scanToken();
return m_currentToken.token;
}
Token::Value Scanner::selectToken(char _next, Token::Value _then, Token::Value _else)
{
advance();
if (m_char == _next)
return selectToken(_then);
else
return _else;
}
bool Scanner::skipWhitespace()
{
int const startPosition = getSourcePos();
while (isWhiteSpace(m_char))
advance();
// Return whether or not we skipped any characters.
return getSourcePos() != startPosition;
}
bool Scanner::skipWhitespaceExceptLF()
{
int const startPosition = getSourcePos();
while (isWhiteSpace(m_char) && !isLineTerminator(m_char))
advance();
// Return whether or not we skipped any characters.
return getSourcePos() != startPosition;
}
Token::Value Scanner::skipSingleLineComment()
{
// The line terminator at the end of the line is not considered
// to be part of the single-line comment; it is recognized
// separately by the lexical grammar and becomes part of the
// stream of input elements for the syntactic grammar
while (advance() && !isLineTerminator(m_char)) { };
return Token::Whitespace;
}
Token::Value Scanner::scanSingleLineDocComment()
{
LiteralScope literal(this, LITERAL_TYPE_COMMENT);
advance(); //consume the last '/' at ///
skipWhitespaceExceptLF();
while (!isSourcePastEndOfInput())
{
if (isLineTerminator(m_char))
{
// check if next line is also a documentation comment
skipWhitespace();
if (!m_source.isPastEndOfInput(3) &&
m_source.get(0) == '/' &&
m_source.get(1) == '/' &&
m_source.get(2) == '/')
{
addCommentLiteralChar('\n');
m_char = m_source.advanceAndGet(3);
}
else
break; // next line is not a documentation comment, we are done
}
addCommentLiteralChar(m_char);
advance();
}
literal.complete();
return Token::CommentLiteral;
}
Token::Value Scanner::skipMultiLineComment()
{
advance();
while (!isSourcePastEndOfInput())
{
char ch = m_char;
advance();
// If we have reached the end of the multi-line comment, we
// consume the '/' and insert a whitespace. This way all
// multi-line comments are treated as whitespace.
if (ch == '*' && m_char == '/')
{
m_char = ' ';
return Token::Whitespace;
}
}
// Unterminated multi-line comment.
return Token::Illegal;
}
Token::Value Scanner::scanMultiLineDocComment()
{
LiteralScope literal(this, LITERAL_TYPE_COMMENT);
bool endFound = false;
bool charsAdded = false;
while (!isSourcePastEndOfInput())
{
//handle newlines in multline comments
if (isLineTerminator(m_char))
{
skipWhitespace();
if (!m_source.isPastEndOfInput(1) && m_source.get(0) == '*' && m_source.get(1) != '/')
{ // skip first '*' in subsequent lines
if (charsAdded)
addCommentLiteralChar('\n');
m_char = m_source.advanceAndGet(2);
}
else if (!m_source.isPastEndOfInput(1) && m_source.get(0) == '*' && m_source.get(1) == '/')
{ // if after newline the comment ends, don't insert the newline
m_char = m_source.advanceAndGet(2);
endFound = true;
break;
}
else if (charsAdded)
addCommentLiteralChar('\n');
}
if (!m_source.isPastEndOfInput(1) && m_source.get(0) == '*' && m_source.get(1) == '/')
{
m_char = m_source.advanceAndGet(2);
endFound = true;
break;
}
addCommentLiteralChar(m_char);
charsAdded = true;
advance();
}
literal.complete();
if (!endFound)
return Token::Illegal;
else
return Token::CommentLiteral;
}
Token::Value Scanner::scanSlash()
{
int firstSlashPosition = getSourcePos();
advance();
if (m_char == '/')
{
if (!advance()) /* double slash comment directly before EOS */
return Token::Whitespace;
else if (m_char == '/')
{
// doxygen style /// comment
Token::Value comment;
m_nextSkippedComment.location.start = firstSlashPosition;
comment = scanSingleLineDocComment();
m_nextSkippedComment.location.end = getSourcePos();
m_nextSkippedComment.token = comment;
return Token::Whitespace;
}
else
return skipSingleLineComment();
}
else if (m_char == '*')
{
// doxygen style /** natspec comment
if (!advance()) /* slash star comment before EOS */
return Token::Whitespace;
else if (m_char == '*')
{
advance(); //consume the last '*' at /**
skipWhitespaceExceptLF();
// special case of a closed normal multiline comment
if (!m_source.isPastEndOfInput() && m_source.get(0) == '/')
advance(); //skip the closing slash
else // we actually have a multiline documentation comment
{
Token::Value comment;
m_nextSkippedComment.location.start = firstSlashPosition;
comment = scanMultiLineDocComment();
m_nextSkippedComment.location.end = getSourcePos();
m_nextSkippedComment.token = comment;
}
return Token::Whitespace;
}
else
return skipMultiLineComment();
}
else if (m_char == '=')
return selectToken(Token::AssignDiv);
else
return Token::Div;
}
void Scanner::scanToken()
{
m_nextToken.literal.clear();
m_nextSkippedComment.literal.clear();
Token::Value token;
do
{
// Remember the position of the next token
m_nextToken.location.start = getSourcePos();
switch (m_char)
{
case '\n': // fall-through
case ' ':
case '\t':
token = selectToken(Token::Whitespace);
break;
case '"':
case '\'':
token = scanString();
break;
case '<':
// < <= << <<=
advance();
if (m_char == '=')
token = selectToken(Token::LessThanOrEqual);
else if (m_char == '<')
token = selectToken('=', Token::AssignShl, Token::SHL);
else
token = Token::LessThan;
break;
case '>':
// > >= >> >>= >>> >>>=
advance();
if (m_char == '=')
token = selectToken(Token::GreaterThanOrEqual);
else if (m_char == '>')
{
// >> >>= >>> >>>=
advance();
if (m_char == '=')
token = selectToken(Token::AssignSar);
else if (m_char == '>')
token = selectToken('=', Token::AssignShr, Token::SHR);
else
token = Token::SAR;
}
else
token = Token::GreaterThan;
break;
case '=':
// = == =>
advance();
if (m_char == '=')
token = selectToken(Token::Equal);
else if (m_char == '>')
token = selectToken(Token::Arrow);
else
token = Token::Assign;
break;
case '!':
// ! !=
advance();
if (m_char == '=')
token = selectToken(Token::NotEqual);
else
token = Token::Not;
break;
case '+':
// + ++ +=
advance();
if (m_char == '+')
token = selectToken(Token::Inc);
else if (m_char == '=')
token = selectToken(Token::AssignAdd);
else
token = Token::Add;
break;
case '-':
// - -- -=
advance();
if (m_char == '-')
token = selectToken(Token::Dec);
else if (m_char == '=')
token = selectToken(Token::AssignSub);
else
token = Token::Sub;
break;
case '*':
// * ** *=
advance();
if (m_char == '*')
token = selectToken(Token::Exp);
else if (m_char == '=')
token = selectToken(Token::AssignMul);
else
token = Token::Mul;
break;
case '%':
// % %=
token = selectToken('=', Token::AssignMod, Token::Mod);
break;
case '/':
// / // /* /=
token = scanSlash();
break;
case '&':
// & && &=
advance();
if (m_char == '&')
token = selectToken(Token::And);
else if (m_char == '=')
token = selectToken(Token::AssignBitAnd);
else
token = Token::BitAnd;
break;
case '|':
// | || |=
advance();
if (m_char == '|')
token = selectToken(Token::Or);
else if (m_char == '=')
token = selectToken(Token::AssignBitOr);
else
token = Token::BitOr;
break;
case '^':
// ^ ^=
token = selectToken('=', Token::AssignBitXor, Token::BitXor);
break;
case '.':
// . Number
advance();
if (isDecimalDigit(m_char))
token = scanNumber('.');
else
token = Token::Period;
break;
case ':':
token = selectToken(Token::Colon);
break;
case ';':
token = selectToken(Token::Semicolon);
break;
case ',':
token = selectToken(Token::Comma);
break;
case '(':
token = selectToken(Token::LParen);
break;
case ')':
token = selectToken(Token::RParen);
break;
case '[':
token = selectToken(Token::LBrack);
break;
case ']':
token = selectToken(Token::RBrack);
break;
case '{':
token = selectToken(Token::LBrace);
break;
case '}':
token = selectToken(Token::RBrace);
break;
case '?':
token = selectToken(Token::Conditional);
break;
case '~':
token = selectToken(Token::BitNot);
break;
default:
if (isIdentifierStart(m_char))
token = scanIdentifierOrKeyword();
else if (isDecimalDigit(m_char))
token = scanNumber();
else if (skipWhitespace())
token = Token::Whitespace;
else if (isSourcePastEndOfInput())
token = Token::EOS;
else
token = selectToken(Token::Illegal);
break;
}
// Continue scanning for tokens as long as we're just skipping
// whitespace.
}
while (token == Token::Whitespace);
m_nextToken.location.end = getSourcePos();
m_nextToken.token = token;
}
bool Scanner::scanEscape()
{
char c = m_char;
advance();
// Skip escaped newlines.
if (isLineTerminator(c))
return true;
switch (c)
{
case '\'': // fall through
case '"': // fall through
case '\\':
break;
case 'b':
c = '\b';
break;
case 'f':
c = '\f';
break;
case 'n':
c = '\n';
break;
case 'r':
c = '\r';
break;
case 't':
c = '\t';
break;
case 'v':
c = '\v';
break;
case 'x':
if (!scanHexByte(c))
return false;
break;
}
addLiteralChar(c);
return true;
}
Token::Value Scanner::scanString()
{
char const quote = m_char;
advance(); // consume quote
LiteralScope literal(this, LITERAL_TYPE_STRING);
while (m_char != quote && !isSourcePastEndOfInput() && !isLineTerminator(m_char))
{
char c = m_char;
advance();
if (c == '\\')
{
if (isSourcePastEndOfInput() || !scanEscape())
return Token::Illegal;
}
else
addLiteralChar(c);
}
if (m_char != quote)
return Token::Illegal;
literal.complete();
advance(); // consume quote
return Token::StringLiteral;
}
void Scanner::scanDecimalDigits()
{
while (isDecimalDigit(m_char))
addLiteralCharAndAdvance();
}
Token::Value Scanner::scanNumber(char _charSeen)
{
enum { DECIMAL, HEX, BINARY } kind = DECIMAL;
LiteralScope literal(this, LITERAL_TYPE_NUMBER);
if (_charSeen == '.')
{
// we have already seen a decimal point of the float
addLiteralChar('.');
scanDecimalDigits(); // we know we have at least one digit
}
else
{
solAssert(_charSeen == 0, "");
// if the first character is '0' we must check for octals and hex
if (m_char == '0')
{
addLiteralCharAndAdvance();
// either 0, 0exxx, 0Exxx, 0.xxx or a hex number
if (m_char == 'x' || m_char == 'X')
{
// hex number
kind = HEX;
addLiteralCharAndAdvance();
if (!isHexDigit(m_char))
return Token::Illegal; // we must have at least one hex digit after 'x'/'X'
while (isHexDigit(m_char))
addLiteralCharAndAdvance();
}
}
// Parse decimal digits and allow trailing fractional part.
if (kind == DECIMAL)
{
scanDecimalDigits(); // optional
if (m_char == '.')
{
addLiteralCharAndAdvance();
scanDecimalDigits(); // optional
}
}
}
// scan exponent, if any
if (m_char == 'e' || m_char == 'E')
{
solAssert(kind != HEX, "'e'/'E' must be scanned as part of the hex number");
if (kind != DECIMAL)
return Token::Illegal;
// scan exponent
addLiteralCharAndAdvance();
if (m_char == '+' || m_char == '-')
addLiteralCharAndAdvance();
if (!isDecimalDigit(m_char))
return Token::Illegal; // we must have at least one decimal digit after 'e'/'E'
scanDecimalDigits();
}
// The source character immediately following a numeric literal must
// not be an identifier start or a decimal digit; see ECMA-262
// section 7.8.3, page 17 (note that we read only one decimal digit
// if the value is 0).
if (isDecimalDigit(m_char) || isIdentifierStart(m_char))
return Token::Illegal;
literal.complete();
return Token::Number;
}
Token::Value Scanner::scanIdentifierOrKeyword()
{
solAssert(isIdentifierStart(m_char), "");
LiteralScope literal(this, LITERAL_TYPE_STRING);
addLiteralCharAndAdvance();
// Scan the rest of the identifier characters.
while (isIdentifierPart(m_char))
addLiteralCharAndAdvance();
literal.complete();
return Token::fromIdentifierOrKeyword(m_nextToken.literal);
}
char CharStream::advanceAndGet(size_t _chars)
{
if (isPastEndOfInput())
return 0;
m_pos += _chars;
if (isPastEndOfInput())
return 0;
return m_source[m_pos];
}
char CharStream::rollback(size_t _amount)
{
solAssert(m_pos >= _amount, "");
m_pos -= _amount;
return get();
}
string CharStream::getLineAtPosition(int _position) const
{
// if _position points to \n, it returns the line before the \n
using size_type = string::size_type;
size_type searchStart = min<size_type>(m_source.size(), _position);
if (searchStart > 0)
searchStart--;
size_type lineStart = m_source.rfind('\n', searchStart);
if (lineStart == string::npos)
lineStart = 0;
else
lineStart++;
return m_source.substr(lineStart, min(m_source.find('\n', lineStart),
m_source.size()) - lineStart);
}
tuple<int, int> CharStream::translatePositionToLineColumn(int _position) const
{
using size_type = string::size_type;
size_type searchPosition = min<size_type>(m_source.size(), _position);
int lineNumber = count(m_source.begin(), m_source.begin() + searchPosition, '\n');
size_type lineStart;
if (searchPosition == 0)
lineStart = 0;
else
{
lineStart = m_source.rfind('\n', searchPosition - 1);
lineStart = lineStart == string::npos ? 0 : lineStart + 1;
}
return tuple<int, int>(lineNumber, searchPosition - lineStart);
}
}
}

224
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@ -1,224 +0,0 @@
/*
This file is part of cpp-ethereum.
cpp-ethereum is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
cpp-ethereum is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
This file is derived from the file "scanner.h", which was part of the
V8 project. The original copyright header follows:
Copyright 2006-2012, the V8 project authors. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above
copyright notice, this list of conditions and the following
disclaimer in the documentation and/or other materials provided
with the distribution.
* Neither the name of Google Inc. nor the names of its
contributors may be used to endorse or promote products derived
from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/**
* @author Christian <c@ethdev.com>
* @date 2014
* Solidity scanner.
*/
#pragma once
#include <libdevcore/Common.h>
#include <libdevcore/Log.h>
#include <libdevcore/CommonData.h>
#include <libsolidity/BaseTypes.h>
#include <libsolidity/Token.h>
namespace dev
{
namespace solidity
{
class AstRawString;
class AstValueFactory;
class ParserRecorder;
class CharStream
{
public:
CharStream(): m_pos(0) {}
explicit CharStream(std::string const& _source): m_source(_source), m_pos(0) {}
int getPos() const { return m_pos; }
bool isPastEndOfInput(size_t _charsForward = 0) const { return (m_pos + _charsForward) >= m_source.size(); }
char get(size_t _charsForward = 0) const { return m_source[m_pos + _charsForward]; }
char advanceAndGet(size_t _chars=1);
char rollback(size_t _amount);
void reset() { m_pos = 0; }
///@{
///@name Error printing helper functions
/// Functions that help pretty-printing parse errors
/// Do only use in error cases, they are quite expensive.
std::string getLineAtPosition(int _position) const;
std::tuple<int, int> translatePositionToLineColumn(int _position) const;
///@}
private:
std::string m_source;
size_t m_pos;
};
class Scanner
{
friend class LiteralScope;
public:
explicit Scanner(CharStream const& _source = CharStream(), std::string const& _sourceName = "") { reset(_source, _sourceName); }
/// Resets the scanner as if newly constructed with _source and _sourceName as input.
void reset(CharStream const& _source, std::string const& _sourceName);
/// Resets scanner to the start of input.
void reset();
/// Returns the next token and advances input
Token::Value next();
///@{
///@name Information about the current token
/// Returns the current token
Token::Value getCurrentToken()
{
return m_currentToken.token;
}
Location getCurrentLocation() const { return m_currentToken.location; }
std::string const& getCurrentLiteral() const { return m_currentToken.literal; }
///@}
///@{
///@name Information about the current comment token
Location getCurrentCommentLocation() const { return m_skippedComment.location; }
std::string const& getCurrentCommentLiteral() const { return m_skippedComment.literal; }
/// Called by the parser during FunctionDefinition parsing to clear the current comment
void clearCurrentCommentLiteral() { m_skippedComment.literal.clear(); }
///@}
///@{
///@name Information about the next token
/// Returns the next token without advancing input.
Token::Value peekNextToken() const { return m_nextToken.token; }
Location peekLocation() const { return m_nextToken.location; }
std::string const& peekLiteral() const { return m_nextToken.literal; }
///@}
std::shared_ptr<std::string const> const& getSourceName() const { return m_sourceName; }
///@{
///@name Error printing helper functions
/// Functions that help pretty-printing parse errors
/// Do only use in error cases, they are quite expensive.
std::string getLineAtPosition(int _position) const { return m_source.getLineAtPosition(_position); }
std::tuple<int, int> translatePositionToLineColumn(int _position) const { return m_source.translatePositionToLineColumn(_position); }
///@}
private:
/// Used for the current and look-ahead token and comments
struct TokenDesc
{
Token::Value token;
Location location;
std::string literal;
};
///@{
///@name Literal buffer support
inline void addLiteralChar(char c) { m_nextToken.literal.push_back(c); }
inline void addCommentLiteralChar(char c) { m_nextSkippedComment.literal.push_back(c); }
inline void addLiteralCharAndAdvance() { addLiteralChar(m_char); advance(); }
///@}
bool advance() { m_char = m_source.advanceAndGet(); return !m_source.isPastEndOfInput(); }
void rollback(int _amount) { m_char = m_source.rollback(_amount); }
inline Token::Value selectToken(Token::Value _tok) { advance(); return _tok; }
/// If the next character is _next, advance and return _then, otherwise return _else.
inline Token::Value selectToken(char _next, Token::Value _then, Token::Value _else);
bool scanHexByte(char& o_scannedByte);
/// Scans a single Solidity token.
void scanToken();
/// Skips all whitespace and @returns true if something was skipped.
bool skipWhitespace();
/// Skips all whitespace except Line feeds and returns true if something was skipped
bool skipWhitespaceExceptLF();
Token::Value skipSingleLineComment();
Token::Value skipMultiLineComment();
void scanDecimalDigits();
Token::Value scanNumber(char _charSeen = 0);
Token::Value scanIdentifierOrKeyword();
Token::Value scanString();
Token::Value scanSingleLineDocComment();
Token::Value scanMultiLineDocComment();
/// Scans a slash '/' and depending on the characters returns the appropriate token
Token::Value scanSlash();
/// Scans an escape-sequence which is part of a string and adds the
/// decoded character to the current literal. Returns true if a pattern
/// is scanned.
bool scanEscape();
/// Return the current source position.
int getSourcePos() { return m_source.getPos(); }
bool isSourcePastEndOfInput() { return m_source.isPastEndOfInput(); }
TokenDesc m_skippedComment; // desc for current skipped comment
TokenDesc m_nextSkippedComment; // desc for next skiped comment
TokenDesc m_currentToken; // desc for current token (as returned by Next())
TokenDesc m_nextToken; // desc for next token (one token look-ahead)
CharStream m_source;
std::shared_ptr<std::string const> m_sourceName;
/// one character look-ahead, equals 0 at end of input
char m_char;
};
}
}

86
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@ -1,86 +0,0 @@
/*
This file is part of cpp-ethereum.
cpp-ethereum is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
cpp-ethereum is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @author Christian <c@ethdev.com>
* @date 2014
* Formatting functions for errors referencing positions and locations in the source.
*/
#include <libsolidity/SourceReferenceFormatter.h>
#include <libsolidity/CompilerStack.h>
#include <libsolidity/Scanner.h>
#include <libsolidity/Exceptions.h>
using namespace std;
namespace dev
{
namespace solidity
{
void SourceReferenceFormatter::printSourceLocation(ostream& _stream,
Location const& _location,
Scanner const& _scanner)
{
int startLine;
int startColumn;
tie(startLine, startColumn) = _scanner.translatePositionToLineColumn(_location.start);
int endLine;
int endColumn;
tie(endLine, endColumn) = _scanner.translatePositionToLineColumn(_location.end);
if (startLine == endLine)
{
_stream << _scanner.getLineAtPosition(_location.start) << endl
<< string(startColumn, ' ') << "^";
if (endColumn > startColumn + 2)
_stream << string(endColumn - startColumn - 2, '-');
if (endColumn > startColumn + 1)
_stream << "^";
_stream << endl;
}
else
_stream << _scanner.getLineAtPosition(_location.start) << endl
<< string(startColumn, ' ') << "^\n"
<< "Spanning multiple lines.\n";
}
void SourceReferenceFormatter::printExceptionInformation(ostream& _stream,
Exception const& _exception,
string const& _name,
CompilerStack const& _compiler)
{
Location const* location = boost::get_error_info<errinfo_sourceLocation>(_exception);
Scanner const* scanner;
if (location)
{
scanner = &_compiler.getScanner(*location->sourceName);
int startLine;
int startColumn;
tie(startLine, startColumn) = scanner->translatePositionToLineColumn(location->start);
_stream << *location->sourceName << ":" << (startLine + 1) << ":" << (startColumn + 1) << ": ";
}
_stream << _name;
if (string const* description = boost::get_error_info<errinfo_comment>(_exception))
_stream << ": " << *description << endl;
if (location)
printSourceLocation(_stream, *location, *scanner);
}
}
}

48
SourceReferenceFormatter.h
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@ -1,48 +0,0 @@
/*
This file is part of cpp-ethereum.
cpp-ethereum is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
cpp-ethereum is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @author Christian <c@ethdev.com>
* @date 2014
* Formatting functions for errors referencing positions and locations in the source.
*/
#pragma once
#include <ostream>
#include <libsolidity/BaseTypes.h>
namespace dev
{
struct Exception; // forward
namespace solidity
{
class Scanner; // forward
class CompilerStack; // forward
struct SourceReferenceFormatter
{
public:
static void printSourceLocation(std::ostream& _stream, Location const& _location, Scanner const& _scanner);
static void printExceptionInformation(std::ostream& _stream, Exception const& _exception,
std::string const& _name, CompilerStack const& _compiler);
};
}
}

100
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@ -1,100 +0,0 @@
// Copyright 2006-2012, the V8 project authors. All rights reserved.
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following
// disclaimer in the documentation and/or other materials provided
// with the distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// Modifications as part of cpp-ethereum under the following license:
//
// cpp-ethereum is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// cpp-ethereum is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
#include <map>
#include <libsolidity/Token.h>
using namespace std;
namespace dev
{
namespace solidity
{
#define T(name, string, precedence) #name,
char const* const Token::m_name[NUM_TOKENS] =
{
TOKEN_LIST(T, T)
};
#undef T
#define T(name, string, precedence) string,
char const* const Token::m_string[NUM_TOKENS] =
{
TOKEN_LIST(T, T)
};
#undef T
#define T(name, string, precedence) precedence,
int8_t const Token::m_precedence[NUM_TOKENS] =
{
TOKEN_LIST(T, T)
};
#undef T
#define KT(a, b, c) 'T',
#define KK(a, b, c) 'K',
char const Token::m_tokenType[] =
{
TOKEN_LIST(KT, KK)
};
Token::Value Token::fromIdentifierOrKeyword(const std::string& _name)
{
// The following macros are used inside TOKEN_LIST and cause non-keyword tokens to be ignored
// and keywords to be put inside the keywords variable.
#define KEYWORD(name, string, precedence) {string, Token::name},
#define TOKEN(name, string, precedence)
static const map<string, Token::Value> keywords({TOKEN_LIST(TOKEN, KEYWORD)});
#undef KEYWORD
#undef TOKEN
auto it = keywords.find(_name);
return it == keywords.end() ? Token::Identifier : it->second;
}
#undef KT
#undef KK
}
}

413
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@ -1,413 +0,0 @@
// Copyright 2006-2012, the V8 project authors. All rights reserved.
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following
// disclaimer in the documentation and/or other materials provided
// with the distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// Modifications as part of cpp-ethereum under the following license:
//
// cpp-ethereum is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// cpp-ethereum is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
#pragma once
#include <libdevcore/Common.h>
#include <libdevcore/Log.h>
#include <libsolidity/Utils.h>
#include <libsolidity/Exceptions.h>
namespace dev
{
namespace solidity
{
// TOKEN_LIST takes a list of 3 macros M, all of which satisfy the
// same signature M(name, string, precedence), where name is the
// symbolic token name, string is the corresponding syntactic symbol
// (or NULL, for literals), and precedence is the precedence (or 0).
// The parameters are invoked for token categories as follows:
//
// T: Non-keyword tokens
// K: Keyword tokens
// IGNORE_TOKEN is a convenience macro that can be supplied as
// an argument (at any position) for a TOKEN_LIST call. It does
// nothing with tokens belonging to the respective category.
#define IGNORE_TOKEN(name, string, precedence)
#define TOKEN_LIST(T, K) \
/* End of source indicator. */ \
T(EOS, "EOS", 0) \
\
/* Punctuators (ECMA-262, section 7.7, page 15). */ \
T(LParen, "(", 0) \
T(RParen, ")", 0) \
T(LBrack, "[", 0) \
T(RBrack, "]", 0) \
T(LBrace, "{", 0) \
T(RBrace, "}", 0) \
T(Colon, ":", 0) \
T(Semicolon, ";", 0) \
T(Period, ".", 0) \
T(Conditional, "?", 3) \
T(Arrow, "=>", 0) \
\
/* Assignment operators. */ \
/* IsAssignmentOp() relies on this block of enum values being */ \
/* contiguous and sorted in the same order!*/ \
T(Assign, "=", 2) \
/* The following have to be in exactly the same order as the simple binary operators*/ \
T(AssignBitOr, "|=", 2) \
T(AssignBitXor, "^=", 2) \
T(AssignBitAnd, "&=", 2) \
T(AssignShl, "<<=", 2) \
T(AssignSar, ">>=", 2) \
T(AssignShr, ">>>=", 2) \
T(AssignAdd, "+=", 2) \
T(AssignSub, "-=", 2) \
T(AssignMul, "*=", 2) \
T(AssignDiv, "/=", 2) \
T(AssignMod, "%=", 2) \
\
/* Binary operators sorted by precedence. */ \
/* IsBinaryOp() relies on this block of enum values */ \
/* being contiguous and sorted in the same order! */ \
T(Comma, ",", 1) \
T(Or, "||", 4) \
T(And, "&&", 5) \
T(BitOr, "|", 8) \
T(BitXor, "^", 9) \
T(BitAnd, "&", 10) \
T(SHL, "<<", 11) \
T(SAR, ">>", 11) \
T(SHR, ">>>", 11) \
T(Add, "+", 12) \
T(Sub, "-", 12) \
T(Mul, "*", 13) \
T(Div, "/", 13) \
T(Mod, "%", 13) \
T(Exp, "**", 14) \
\
/* Compare operators sorted by precedence. */ \
/* IsCompareOp() relies on this block of enum values */ \
/* being contiguous and sorted in the same order! */ \
T(Equal, "==", 6) \
T(NotEqual, "!=", 6) \
T(LessThan, "<", 7) \
T(GreaterThan, ">", 7) \
T(LessThanOrEqual, "<=", 7) \
T(GreaterThanOrEqual, ">=", 7) \
K(In, "in", 7) \
\
/* Unary operators. */ \
/* IsUnaryOp() relies on this block of enum values */ \
/* being contiguous and sorted in the same order! */ \
T(Not, "!", 0) \
T(BitNot, "~", 0) \
T(Inc, "++", 0) \
T(Dec, "--", 0) \
K(Delete, "delete", 0) \
\
/* Keywords */ \
K(Break, "break", 0) \
K(Case, "case", 0) \
K(Const, "constant", 0) \
K(Continue, "continue", 0) \
K(Contract, "contract", 0) \
K(Default, "default", 0) \
K(Do, "do", 0) \
K(Else, "else", 0) \
K(Event, "event", 0) \
K(External, "external", 0) \
K(Is, "is", 0) \
K(Indexed, "indexed", 0) \
K(For, "for", 0) \
K(Function, "function", 0) \
K(If, "if", 0) \
K(Import, "import", 0) \
K(Mapping, "mapping", 0) \
K(Modifier, "modifier", 0) \
K(New, "new", 0) \
K(Public, "public", 0) \
K(Private, "private", 0) \
K(Inheritable, "inheritable", 0) \
K(Return, "return", 0) \
K(Returns, "returns", 0) \
K(Struct, "struct", 0) \
K(Switch, "switch", 0) \
K(Var, "var", 0) \
K(While, "while", 0) \
K(Enum, "enum", 0) \
\
/* Ether subdenominations */ \
K(SubWei, "wei", 0) \
K(SubSzabo, "szabo", 0) \
K(SubFinney, "finney", 0) \
K(SubEther, "ether", 0) \
/* type keywords, keep them in this order, keep int as first keyword
* the implementation in Types.cpp has to be synced to this here */\
K(Int, "int", 0) \
K(Int8, "int8", 0) \
K(Int16, "int16", 0) \
K(Int24, "int24", 0) \
K(Int32, "int32", 0) \
K(Int40, "int40", 0) \
K(Int48, "int48", 0) \
K(Int56, "int56", 0) \
K(Int64, "int64", 0) \
K(Int72, "int72", 0) \
K(Int80, "int80", 0) \
K(Int88, "int88", 0) \
K(Int96, "int96", 0) \
K(Int104, "int104", 0) \
K(Int112, "int112", 0) \
K(Int120, "int120", 0) \
K(Int128, "int128", 0) \
K(Int136, "int136", 0) \
K(Int144, "int144", 0) \
K(Int152, "int152", 0) \
K(Int160, "int160", 0) \
K(Int168, "int168", 0) \
K(Int176, "int178", 0) \
K(Int184, "int184", 0) \
K(Int192, "int192", 0) \
K(Int200, "int200", 0) \
K(Int208, "int208", 0) \
K(Int216, "int216", 0) \
K(Int224, "int224", 0) \
K(Int232, "int232", 0) \
K(Int240, "int240", 0) \
K(Int248, "int248", 0) \
K(Int256, "int256", 0) \
K(UInt, "uint", 0) \
K(UInt8, "uint8", 0) \
K(UInt16, "uint16", 0) \
K(UInt24, "uint24", 0) \
K(UInt32, "uint32", 0) \
K(UInt40, "uint40", 0) \
K(UInt48, "uint48", 0) \
K(UInt56, "uint56", 0) \
K(UInt64, "uint64", 0) \
K(UInt72, "uint72", 0) \
K(UInt80, "uint80", 0) \
K(UInt88, "uint88", 0) \
K(UInt96, "uint96", 0) \
K(UInt104, "uint104", 0) \
K(UInt112, "uint112", 0) \
K(UInt120, "uint120", 0) \
K(UInt128, "uint128", 0) \
K(UInt136, "uint136", 0) \
K(UInt144, "uint144", 0) \
K(UInt152, "uint152", 0) \
K(UInt160, "uint160", 0) \
K(UInt168, "uint168", 0) \
K(UInt176, "uint178", 0) \
K(UInt184, "uint184", 0) \
K(UInt192, "uint192", 0) \
K(UInt200, "uint200", 0) \
K(UInt208, "uint208", 0) \
K(UInt216, "uint216", 0) \
K(UInt224, "uint224", 0) \
K(UInt232, "uint232", 0) \
K(UInt240, "uint240", 0) \
K(UInt248, "uint248", 0) \
K(UInt256, "uint256", 0) \
K(Hash, "hash", 0) \
K(Hash8, "hash8", 0) \
K(Hash16, "hash16", 0) \
K(Hash24, "hash24", 0) \
K(Hash32, "hash32", 0) \
K(Hash40, "hash40", 0) \
K(Hash48, "hash48", 0) \
K(Hash56, "hash56", 0) \
K(Hash64, "hash64", 0) \
K(Hash72, "hash72", 0) \
K(Hash80, "hash80", 0) \
K(Hash88, "hash88", 0) \
K(Hash96, "hash96", 0) \
K(Hash104, "hash104", 0) \
K(Hash112, "hash112", 0) \
K(Hash120, "hash120", 0) \
K(Hash128, "hash128", 0) \
K(Hash136, "hash136", 0) \
K(Hash144, "hash144", 0) \
K(Hash152, "hash152", 0) \
K(Hash160, "hash160", 0) \
K(Hash168, "hash168", 0) \
K(Hash176, "hash178", 0) \
K(Hash184, "hash184", 0) \
K(Hash192, "hash192", 0) \
K(Hash200, "hash200", 0) \
K(Hash208, "hash208", 0) \
K(Hash216, "hash216", 0) \
K(Hash224, "hash224", 0) \
K(Hash232, "hash232", 0) \
K(Hash240, "hash240", 0) \
K(Hash248, "hash248", 0) \
K(Hash256, "hash256", 0) \
K(Address, "address", 0) \
K(Bool, "bool", 0) \
K(Bytes, "bytes", 0) \
K(StringType, "string", 0) \
K(String0, "string0", 0) \
K(String1, "string1", 0) \
K(String2, "string2", 0) \
K(String3, "string3", 0) \
K(String4, "string4", 0) \
K(String5, "string5", 0) \
K(String6, "string6", 0) \
K(String7, "string7", 0) \
K(String8, "string8", 0) \
K(String9, "string9", 0) \
K(String10, "string10", 0) \
K(String11, "string11", 0) \
K(String12, "string12", 0) \
K(String13, "string13", 0) \
K(String14, "string14", 0) \
K(String15, "string15", 0) \
K(String16, "string16", 0) \
K(String17, "string17", 0) \
K(String18, "string18", 0) \
K(String19, "string19", 0) \
K(String20, "string20", 0) \
K(String21, "string21", 0) \
K(String22, "string22", 0) \
K(String23, "string23", 0) \
K(String24, "string24", 0) \
K(String25, "string25", 0) \
K(String26, "string26", 0) \
K(String27, "string27", 0) \
K(String28, "string28", 0) \
K(String29, "string29", 0) \
K(String30, "string30", 0) \
K(String31, "string31", 0) \
K(String32, "string32", 0) \
K(Text, "text", 0) \
K(Real, "real", 0) \
K(UReal, "ureal", 0) \
T(TypesEnd, NULL, 0) /* used as type enum end marker */ \
\
/* Literals */ \
K(NullLiteral, "null", 0) \
K(TrueLiteral, "true", 0) \
K(FalseLiteral, "false", 0) \
T(Number, NULL, 0) \
T(StringLiteral, NULL, 0) \
T(CommentLiteral, NULL, 0) \
\
/* Identifiers (not keywords or future reserved words). */ \
T(Identifier, NULL, 0) \
\
/* Illegal token - not able to scan. */ \
T(Illegal, "ILLEGAL", 0) \
\
/* Scanner-internal use only. */ \
T(Whitespace, NULL, 0)
class Token
{
public:
// All token values.
// attention! msvc issue:
// http://stackoverflow.com/questions/9567868/compile-errors-after-adding-v8-to-my-project-c2143-c2059
// @todo: avoid TOKEN_LIST macro
#define T(name, string, precedence) name,
enum Value
{
TOKEN_LIST(T, T)
NUM_TOKENS
};
#undef T
// Returns a string corresponding to the C++ token name
// (e.g. "LT" for the token LT).
static char const* getName(Value tok)
{
solAssert(tok < NUM_TOKENS, "");
return m_name[tok];
}
// Predicates
static bool isElementaryTypeName(Value tok) { return Int <= tok && tok < TypesEnd; }
static bool isAssignmentOp(Value tok) { return Assign <= tok && tok <= AssignMod; }
static bool isBinaryOp(Value op) { return Comma <= op && op <= Exp; }
static bool isCommutativeOp(Value op) { return op == BitOr || op == BitXor || op == BitAnd ||
op == Add || op == Mul || op == Equal || op == NotEqual; }
static bool isArithmeticOp(Value op) { return Add <= op && op <= Exp; }
static bool isCompareOp(Value op) { return Equal <= op && op <= In; }
static Value AssignmentToBinaryOp(Value op)
{
solAssert(isAssignmentOp(op) && op != Assign, "");
return Value(op + (BitOr - AssignBitOr));
}
static bool isBitOp(Value op) { return (BitOr <= op && op <= SHR) || op == BitNot; }
static bool isUnaryOp(Value op) { return (Not <= op && op <= Delete) || op == Add || op == Sub; }
static bool isCountOp(Value op) { return op == Inc || op == Dec; }
static bool isShiftOp(Value op) { return (SHL <= op) && (op <= SHR); }
static bool isVisibilitySpecifier(Value op) { return isVariableVisibilitySpecifier(op) || op == External; }
static bool isVariableVisibilitySpecifier(Value op) { return op == Public || op == Private || op == Inheritable; }
static bool isEtherSubdenomination(Value op) { return op == SubWei || op == SubSzabo || op == SubFinney || op == Token::SubEther; }
// Returns a string corresponding to the JS token string
// (.e., "<" for the token LT) or NULL if the token doesn't
// have a (unique) string (e.g. an IDENTIFIER).
static char const* toString(Value tok)
{
solAssert(tok < NUM_TOKENS, "");
return m_string[tok];
}
// Returns the precedence > 0 for binary and compare
// operators; returns 0 otherwise.
static int precedence(Value tok)
{
solAssert(tok < NUM_TOKENS, "");
return m_precedence[tok];
}
static Token::Value fromIdentifierOrKeyword(std::string const& _name);
private:
static char const* const m_name[NUM_TOKENS];
static char const* const m_string[NUM_TOKENS];
static int8_t const m_precedence[NUM_TOKENS];
static char const m_tokenType[NUM_TOKENS];
};
}
}

1071
Types.cpp
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631
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@ -1,631 +0,0 @@
/*
This file is part of cpp-ethereum.
cpp-ethereum is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
cpp-ethereum is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @author Christian <c@ethdev.com>
* @date 2014
* Solidity data types
*/
#pragma once
#include <memory>
#include <string>
#include <map>
#include <boost/noncopyable.hpp>
#include <libdevcore/Common.h>
#include <libsolidity/Exceptions.h>
#include <libsolidity/ASTForward.h>
#include <libsolidity/Token.h>
namespace dev
{
namespace solidity
{
// @todo realMxN, dynamic strings, text, arrays
class Type; // forward
class FunctionType; // forward
using TypePointer = std::shared_ptr<Type const>;
using FunctionTypePointer = std::shared_ptr<FunctionType const>;
using TypePointers = std::vector<TypePointer>;
/**
* List of members of a type.
*/
class MemberList
{
public:
using MemberMap = std::vector<std::pair<std::string, TypePointer>>;
MemberList() {}
explicit MemberList(MemberMap const& _members): m_memberTypes(_members) {}
TypePointer getMemberType(std::string const& _name) const
{
for (auto const& it: m_memberTypes)
if (it.first == _name)
return it.second;
return TypePointer();
}
MemberMap::const_iterator begin() const { return m_memberTypes.begin(); }
MemberMap::const_iterator end() const { return m_memberTypes.end(); }
private:
MemberMap m_memberTypes;
};
/**
* Abstract base class that forms the root of the type hierarchy.
*/
class Type: private boost::noncopyable, public std::enable_shared_from_this<Type>
{
public:
enum class Category
{
Integer, IntegerConstant, Bool, Real, ByteArray,
String, Contract, Struct, Function, Enum,
Mapping, Void, TypeType, Modifier, Magic
};
///@{
///@name Factory functions
/// Factory functions that convert an AST @ref TypeName to a Type.
static TypePointer fromElementaryTypeName(Token::Value _typeToken);
static TypePointer fromElementaryTypeName(std::string const& _name);
static TypePointer fromUserDefinedTypeName(UserDefinedTypeName const& _typeName);
static TypePointer fromMapping(Mapping const& _typeName);
static TypePointer fromFunction(FunctionDefinition const& _function);
/// @}
/// Auto-detect the proper type for a literal. @returns an empty pointer if the literal does
/// not fit any type.
static TypePointer forLiteral(Literal const& _literal);
/// @returns a pointer to _a or _b if the other is implicitly convertible to it or nullptr otherwise
static TypePointer commonType(TypePointer const& _a, TypePointer const& _b);
virtual Category getCategory() const = 0;
virtual bool isImplicitlyConvertibleTo(Type const& _other) const { return *this == _other; }
virtual bool isExplicitlyConvertibleTo(Type const& _convertTo) const
{
return isImplicitlyConvertibleTo(_convertTo);
}
/// @returns the resulting type of applying the given unary operator or an empty pointer if
/// this is not possible.
/// The default implementation does not allow any unary operator.
virtual TypePointer unaryOperatorResult(Token::Value) const { return TypePointer(); }
/// @returns the resulting type of applying the given binary operator or an empty pointer if
/// this is not possible.
/// The default implementation allows comparison operators if a common type exists
virtual TypePointer binaryOperatorResult(Token::Value _operator, TypePointer const& _other) const
{
return Token::isCompareOp(_operator) ? commonType(shared_from_this(), _other) : TypePointer();
}
virtual bool operator==(Type const& _other) const { return getCategory() == _other.getCategory(); }
virtual bool operator!=(Type const& _other) const { return !this->operator ==(_other); }
/// @returns number of bytes used by this type when encoded for CALL, or 0 if the encoding
/// is not a simple big-endian encoding or the type cannot be stored in calldata.
/// Note that irrespective of this size, each calldata element is padded to a multiple of 32 bytes.
virtual unsigned getCalldataEncodedSize() const { return 0; }
/// @returns true if the type is dynamically encoded in calldata
virtual bool isDynamicallySized() const { return false; }
/// @returns number of bytes required to hold this value in storage.
/// For dynamically "allocated" types, it returns the size of the statically allocated head,
virtual u256 getStorageSize() const { return 1; }
/// Returns true if the type can be stored in storage.
virtual bool canBeStored() const { return true; }
/// Returns false if the type cannot live outside the storage, i.e. if it includes some mapping.
virtual bool canLiveOutsideStorage() const { return true; }
/// Returns true if the type can be stored as a value (as opposed to a reference) on the stack,
/// i.e. it behaves differently in lvalue context and in value context.
virtual bool isValueType() const { return false; }
virtual unsigned getSizeOnStack() const { return 1; }
/// @returns the real type of some types, like e.g: IntegerConstant
virtual TypePointer getRealType() const { return shared_from_this(); }
/// Returns the list of all members of this type. Default implementation: no members.
virtual MemberList const& getMembers() const { return EmptyMemberList; }
/// Convenience method, returns the type of the given named member or an empty pointer if no such member exists.
TypePointer getMemberType(std::string const& _name) const { return getMembers().getMemberType(_name); }
virtual std::string toString() const = 0;
virtual u256 literalValue(Literal const*) const
{
BOOST_THROW_EXCEPTION(InternalCompilerError() << errinfo_comment("Literal value requested "
"for type without literals."));
}
protected:
/// Convenience object used when returning an empty member list.
static const MemberList EmptyMemberList;
};
/**
* Any kind of integer type including hash and address.
*/
class IntegerType: public Type
{
public:
enum class Modifier
{
Unsigned, Signed, Hash, Address
};
virtual Category getCategory() const override { return Category::Integer; }
explicit IntegerType(int _bits, Modifier _modifier = Modifier::Unsigned);
virtual bool isImplicitlyConvertibleTo(Type const& _convertTo) const override;
virtual bool isExplicitlyConvertibleTo(Type const& _convertTo) const override;
virtual TypePointer unaryOperatorResult(Token::Value _operator) const override;
virtual TypePointer binaryOperatorResult(Token::Value _operator, TypePointer const& _other) const override;
virtual bool operator==(Type const& _other) const override;
virtual unsigned getCalldataEncodedSize() const override { return m_bits / 8; }
virtual bool isValueType() const override { return true; }
virtual MemberList const& getMembers() const { return isAddress() ? AddressMemberList : EmptyMemberList; }
virtual std::string toString() const override;
int getNumBits() const { return m_bits; }
bool isHash() const { return m_modifier == Modifier::Hash || m_modifier == Modifier::Address; }
bool isAddress() const { return m_modifier == Modifier::Address; }
bool isSigned() const { return m_modifier == Modifier::Signed; }
static const MemberList AddressMemberList;
private:
int m_bits;
Modifier m_modifier;
};
/**
* Integer constants either literals or computed. Example expressions: 2, 2+10, ~10.
* There is one distinct type per value.
*/
class IntegerConstantType: public Type
{
public:
virtual Category getCategory() const override { return Category::IntegerConstant; }
explicit IntegerConstantType(Literal const& _literal);
explicit IntegerConstantType(bigint _value): m_value(_value) {}
virtual bool isImplicitlyConvertibleTo(Type const& _convertTo) const override;
virtual bool isExplicitlyConvertibleTo(Type const& _convertTo) const override;
virtual TypePointer unaryOperatorResult(Token::Value _operator) const override;
virtual TypePointer binaryOperatorResult(Token::Value _operator, TypePointer const& _other) const override;
virtual bool operator==(Type const& _other) const override;
virtual bool canBeStored() const override { return false; }
virtual bool canLiveOutsideStorage() const override { return false; }
virtual unsigned getSizeOnStack() const override { return 1; }
virtual std::string toString() const override;
virtual u256 literalValue(Literal const* _literal) const override;
virtual TypePointer getRealType() const override;
/// @returns the smallest integer type that can hold the value or an empty pointer if not possible.
std::shared_ptr<IntegerType const> getIntegerType() const;
private:
bigint m_value;
};
/**
* String type with fixed length, up to 32 bytes.
*/
class StaticStringType: public Type
{
public:
virtual Category getCategory() const override { return Category::String; }
/// @returns the smallest string type for the given literal or an empty pointer
/// if no type fits.
static std::shared_ptr<StaticStringType> smallestTypeForLiteral(std::string const& _literal);
explicit StaticStringType(int _bytes);
virtual bool isImplicitlyConvertibleTo(Type const& _convertTo) const override;
virtual bool isExplicitlyConvertibleTo(Type const& _convertTo) const override;
virtual bool operator==(Type const& _other) const override;
virtual unsigned getCalldataEncodedSize() const override { return m_bytes; }
virtual bool isValueType() const override { return true; }
virtual std::string toString() const override { return "string" + dev::toString(m_bytes); }
virtual u256 literalValue(Literal const* _literal) const override;
int getNumBytes() const { return m_bytes; }
private:
int m_bytes;
};
/**
* The boolean type.
*/
class BoolType: public Type
{
public:
BoolType() {}
virtual Category getCategory() const override { return Category::Bool; }
virtual bool isExplicitlyConvertibleTo(Type const& _convertTo) const override;
virtual TypePointer unaryOperatorResult(Token::Value _operator) const override;
virtual TypePointer binaryOperatorResult(Token::Value _operator, TypePointer const& _other) const override;
virtual unsigned getCalldataEncodedSize() const { return 1; }
virtual bool isValueType() const override { return true; }
virtual std::string toString() const override { return "bool"; }
virtual u256 literalValue(Literal const* _literal) const override;
};
/**
* The type of a byte array, prototype for a general array.
*/
class ByteArrayType: public Type
{
public:
enum class Location { Storage, CallData, Memory };
virtual Category getCategory() const override { return Category::ByteArray; }
explicit ByteArrayType(Location _location): m_location(_location) {}
virtual bool isImplicitlyConvertibleTo(Type const& _convertTo) const override;
virtual TypePointer unaryOperatorResult(Token::Value _operator) const override;
virtual bool operator==(const Type& _other) const override;
virtual bool isDynamicallySized() const { return true; }
virtual unsigned getSizeOnStack() const override;
virtual std::string toString() const override { return "bytes"; }
virtual MemberList const& getMembers() const override { return s_byteArrayMemberList; }
Location getLocation() const { return m_location; }
/// @returns a copy of this type with location changed to @a _location
/// @todo this might move as far up as Type later
std::shared_ptr<ByteArrayType> copyForLocation(Location _location) const;
private:
Location m_location;
static const MemberList s_byteArrayMemberList;
};
/**
* The type of a contract instance, there is one distinct type for each contract definition.
*/
class ContractType: public Type
{
public:
virtual Category getCategory() const override { return Category::Contract; }
explicit ContractType(ContractDefinition const& _contract, bool _super = false):
m_contract(_contract), m_super(_super) {}
/// Contracts can be implicitly converted to super classes and to addresses.
virtual bool isImplicitlyConvertibleTo(Type const& _convertTo) const override;
/// Contracts can be converted to themselves and to integers.
virtual bool isExplicitlyConvertibleTo(Type const& _convertTo) const override;
virtual TypePointer unaryOperatorResult(Token::Value _operator) const override;
virtual bool operator==(Type const& _other) const override;
virtual bool isValueType() const override { return true; }
virtual std::string toString() const override;
virtual MemberList const& getMembers() const override;
bool isSuper() const { return m_super; }
ContractDefinition const& getContractDefinition() const { return m_contract; }
/// Returns the function type of the constructor. Note that the location part of the function type
/// is not used, as this type cannot be the type of a variable or expression.
FunctionTypePointer const& getConstructorType() const;
/// @returns the identifier of the function with the given name or Invalid256 if such a name does
/// not exist.
u256 getFunctionIdentifier(std::string const& _functionName) const;
private:
ContractDefinition const& m_contract;
/// If true, it is the "super" type of the current contract, i.e. it contains only inherited
/// members.
bool m_super;
/// Type of the constructor, @see getConstructorType. Lazily initialized.
mutable FunctionTypePointer m_constructorType;
/// List of member types, will be lazy-initialized because of recursive references.
mutable std::unique_ptr<MemberList> m_members;
};
/**
* The type of a struct instance, there is one distinct type per struct definition.
*/
class StructType: public Type
{
public:
virtual Category getCategory() const override { return Category::Struct; }
explicit StructType(StructDefinition const& _struct): m_struct(_struct) {}
virtual TypePointer unaryOperatorResult(Token::Value _operator) const override;
virtual bool operator==(Type const& _other) const override;
virtual u256 getStorageSize() const override;
virtual bool canLiveOutsideStorage() const override;
virtual unsigned getSizeOnStack() const override { return 1; /*@todo*/ }
virtual std::string toString() const override;
virtual MemberList const& getMembers() const override;
u256 getStorageOffsetOfMember(std::string const& _name) const;
private:
StructDefinition const& m_struct;
/// List of member types, will be lazy-initialized because of recursive references.
mutable std::unique_ptr<MemberList> m_members;
};
/**
* The type of an enum instance, there is one distinct type per enum definition.
*/
class EnumType: public Type
{
public:
virtual Category getCategory() const override { return Category::Enum; }
explicit EnumType(EnumDefinition const& _enum): m_enum(_enum) {}
virtual TypePointer unaryOperatorResult(Token::Value _operator) const override;
virtual bool operator==(Type const& _other) const override;
virtual unsigned getSizeOnStack() const override { return 1; }
virtual std::string toString() const override;
virtual bool isValueType() const override { return true; }
virtual bool isExplicitlyConvertibleTo(Type const& _convertTo) const override;
EnumDefinition const& getEnumDefinition() const { return m_enum; }
/// @returns the value that the string has in the Enum
unsigned int getMemberValue(ASTString const& _member) const;
private:
EnumDefinition const& m_enum;
/// List of member types, will be lazy-initialized because of recursive references.
mutable std::unique_ptr<MemberList> m_members;
};
/**
* The type of a function, identified by its (return) parameter types.
* @todo the return parameters should also have names, i.e. return parameters should be a struct
* type.
*/
class FunctionType: public Type
{
public:
/// The meaning of the value(s) on the stack referencing the function:
/// INTERNAL: jump tag, EXTERNAL: contract address + function identifier,
/// BARE: contract address (non-abi contract call)
/// OTHERS: special virtual function, nothing on the stack
/// @todo This documentation is outdated, and Location should rather be named "Type"
enum class Location { Internal, External, Creation, Send,
SHA3, Suicide,
ECRecover, SHA256, RIPEMD160,
Log0, Log1, Log2, Log3, Log4, Event,
SetGas, SetValue, BlockHash,
Bare };
virtual Category getCategory() const override { return Category::Function; }
explicit FunctionType(FunctionDefinition const& _function, bool _isInternal = true);
explicit FunctionType(VariableDeclaration const& _varDecl);
explicit FunctionType(EventDefinition const& _event);
FunctionType(strings const& _parameterTypes, strings const& _returnParameterTypes,
Location _location = Location::Internal, bool _arbitraryParameters = false):
FunctionType(parseElementaryTypeVector(_parameterTypes), parseElementaryTypeVector(_returnParameterTypes),
_location, _arbitraryParameters) {}
FunctionType(
TypePointers const& _parameterTypes,
TypePointers const& _returnParameterTypes,
Location _location = Location::Internal,
bool _arbitraryParameters = false,
bool _gasSet = false,
bool _valueSet = false
):
m_parameterTypes (_parameterTypes),
m_returnParameterTypes (_returnParameterTypes),
m_location (_location),
m_arbitraryParameters (_arbitraryParameters),
m_gasSet (_gasSet),
m_valueSet (_valueSet)
{}
TypePointers const& getParameterTypes() const { return m_parameterTypes; }
std::vector<std::string> const& getParameterNames() const { return m_parameterNames; }
std::vector<std::string> const getParameterTypeNames() const;
TypePointers const& getReturnParameterTypes() const { return m_returnParameterTypes; }
std::vector<std::string> const& getReturnParameterNames() const { return m_returnParameterNames; }
std::vector<std::string> const getReturnParameterTypeNames() const;
virtual bool operator==(Type const& _other) const override;
virtual std::string toString() const override;
virtual bool canBeStored() const override { return false; }
virtual u256 getStorageSize() const override { BOOST_THROW_EXCEPTION(InternalCompilerError() << errinfo_comment("Storage size of non-storable function type requested.")); }
virtual bool canLiveOutsideStorage() const override { return false; }
virtual unsigned getSizeOnStack() const override;
virtual MemberList const& getMembers() const override;
Location const& getLocation() const { return m_location; }
/// @returns the canonical signature of this function type given the function name
/// If @a _name is not provided (empty string) then the @c m_declaration member of the
/// function type is used
std::string getCanonicalSignature(std::string const& _name = "") const;
Declaration const& getDeclaration() const
{
solAssert(m_declaration, "Requested declaration from a FunctionType that has none");
return *m_declaration;
}
bool hasDeclaration() const { return !!m_declaration; }
bool isConstant() const { return m_isConstant; }
/// @return A shared pointer of an ASTString.
/// Can contain a nullptr in which case indicates absence of documentation
ASTPointer<ASTString> getDocumentation() const;
/// true iff arguments are to be padded to multiples of 32 bytes for external calls
bool padArguments() const { return !(m_location == Location::SHA3 || m_location == Location::SHA256 || m_location == Location::RIPEMD160); }
bool takesArbitraryParameters() const { return m_arbitraryParameters; }
bool gasSet() const { return m_gasSet; }
bool valueSet() const { return m_valueSet; }
/// @returns a copy of this type, where gas or value are set manually. This will never set one
/// of the parameters to fals.
TypePointer copyAndSetGasOrValue(bool _setGas, bool _setValue) const;
private:
static TypePointers parseElementaryTypeVector(strings const& _types);
TypePointers m_parameterTypes;
TypePointers m_returnParameterTypes;
std::vector<std::string> m_parameterNames;
std::vector<std::string> m_returnParameterNames;
Location const m_location;
/// true iff the function takes an arbitrary number of arguments of arbitrary types
bool const m_arbitraryParameters = false;
bool const m_gasSet = false; ///< true iff the gas value to be used is on the stack
bool const m_valueSet = false; ///< true iff the value to be sent is on the stack
bool m_isConstant = false;
mutable std::unique_ptr<MemberList> m_members;
Declaration const* m_declaration = nullptr;
};
/**
* The type of a mapping, there is one distinct type per key/value type pair.
*/
class MappingType: public Type
{
public:
virtual Category getCategory() const override { return Category::Mapping; }
MappingType(TypePointer const& _keyType, TypePointer const& _valueType):
m_keyType(_keyType), m_valueType(_valueType) {}
virtual bool operator==(Type const& _other) const override;
virtual std::string toString() const override;
virtual bool canLiveOutsideStorage() const override { return false; }
TypePointer const& getKeyType() const { return m_keyType; }
TypePointer const& getValueType() const { return m_valueType; }
private:
TypePointer m_keyType;
TypePointer m_valueType;
};
/**
* The void type, can only be implicitly used as the type that is returned by functions without
* return parameters.
*/
class VoidType: public Type
{
public:
virtual Category getCategory() const override { return Category::Void; }
VoidType() {}
virtual TypePointer binaryOperatorResult(Token::Value, TypePointer const&) const override { return TypePointer(); }
virtual std::string toString() const override { return "void"; }
virtual bool canBeStored() const override { return false; }
virtual u256 getStorageSize() const override { BOOST_THROW_EXCEPTION(InternalCompilerError() << errinfo_comment("Storage size of non-storable void type requested.")); }
virtual bool canLiveOutsideStorage() const override { return false; }
virtual unsigned getSizeOnStack() const override { return 0; }
};
/**
* The type of a type reference. The type of "uint32" when used in "a = uint32(2)" is an example
* of a TypeType.
*/
class TypeType: public Type
{
public:
virtual Category getCategory() const override { return Category::TypeType; }
explicit TypeType(TypePointer const& _actualType, ContractDefinition const* _currentContract = nullptr):
m_actualType(_actualType), m_currentContract(_currentContract) {}
TypePointer const& getActualType() const { return m_actualType; }
virtual TypePointer binaryOperatorResult(Token::Value, TypePointer const&) const override { return TypePointer(); }
virtual bool operator==(Type const& _other) const override;
virtual bool canBeStored() const override { return false; }
virtual u256 getStorageSize() const override { BOOST_THROW_EXCEPTION(InternalCompilerError() << errinfo_comment("Storage size of non-storable type type requested.")); }
virtual bool canLiveOutsideStorage() const override { return false; }
virtual unsigned getSizeOnStack() const override { return 0; }
virtual std::string toString() const override { return "type(" + m_actualType->toString() + ")"; }
virtual MemberList const& getMembers() const override;
private:
TypePointer m_actualType;
/// Context in which this type is used (influences visibility etc.), can be nullptr.
ContractDefinition const* m_currentContract;
/// List of member types, will be lazy-initialized because of recursive references.
mutable std::unique_ptr<MemberList> m_members;
};
/**
* The type of a function modifier. Not used for anything for now.
*/
class ModifierType: public Type
{
public:
virtual Category getCategory() const override { return Category::Modifier; }
explicit ModifierType(ModifierDefinition const& _modifier);
virtual TypePointer binaryOperatorResult(Token::Value, TypePointer const&) const override { return TypePointer(); }
virtual bool canBeStored() const override { return false; }
virtual u256 getStorageSize() const override { BOOST_THROW_EXCEPTION(InternalCompilerError() << errinfo_comment("Storage size of non-storable type type requested.")); }
virtual bool canLiveOutsideStorage() const override { return false; }
virtual unsigned getSizeOnStack() const override { return 0; }
virtual bool operator==(Type const& _other) const override;
virtual std::string toString() const override;
private:
TypePointers m_parameterTypes;
};
/**
* Special type for magic variables (block, msg, tx), similar to a struct but without any reference
* (it always references a global singleton by name).
*/
class MagicType: public Type
{
public:
enum class Kind { Block, Message, Transaction };
virtual Category getCategory() const override { return Category::Magic; }
explicit MagicType(Kind _kind);
virtual TypePointer binaryOperatorResult(Token::Value, TypePointer const&) const override
{
return TypePointer();
}
virtual bool operator==(Type const& _other) const;
virtual bool canBeStored() const override { return false; }
virtual bool canLiveOutsideStorage() const override { return true; }
virtual unsigned getSizeOnStack() const override { return 0; }
virtual MemberList const& getMembers() const override { return m_members; }
virtual std::string toString() const override;
private:
Kind m_kind;
MemberList m_members;
};
}
}

55
Utils.h
View File

@ -1,55 +0,0 @@
/*
This file is part of cpp-ethereum.
cpp-ethereum is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
cpp-ethereum is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @author Christian <c@ethdev.com>
* @date 2014
* Solidity Utilities.
*/
#pragma once
#include <string>
#include <libsolidity/Exceptions.h>
namespace dev
{
namespace solidity
{
/// Assertion that throws an InternalCompilerError containing the given description if it is not met.
#define solAssert(CONDITION, DESCRIPTION) \
::dev::solidity::solAssertAux(CONDITION, DESCRIPTION, __LINE__, __FILE__, ETH_FUNC)
inline void solAssertAux(bool _condition, std::string const& _errorDescription, unsigned _line,
char const* _file, char const* _function)
{
if (!_condition)
::boost::throw_exception( InternalCompilerError()
<< errinfo_comment(_errorDescription)
<< ::boost::throw_function(_function)
<< ::boost::throw_file(_file)
<< ::boost::throw_line(_line));
}
inline void solAssertAux(void const* _pointer, std::string const& _errorDescription, unsigned _line,
char const* _file, char const* _function)
{
solAssertAux(_pointer != nullptr, _errorDescription, _line, _file, _function);
}
}
}

46
grammar.txt
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@ -1,46 +0,0 @@
ContractDefinition = 'contract' Identifier
( 'is' InheritanceSpecifier (',' InheritanceSpecifier )* )?
'{' ContractPart* '}'
ContractPart = StateVariableDeclaration | StructDefinition | ModifierDefinition | FunctionDefinition | EnumDefinition
InheritanceSpecifier = Identifier ( '(' Expression ( ',' Expression )* ')' )?
StructDefinition = 'struct' Identifier '{'
( VariableDeclaration (';' VariableDeclaration)* )? '}
StateVariableDeclaration = TypeName ( 'public' | 'inheritable' | 'private' )? Identifier ';'
ModifierDefinition = 'modifier' Identifier ParameterList? Block
FunctionDefinition = 'function' Identifier ParameterList
( Identifier | 'constant' | 'external' | 'public' | 'inheritable' | 'private' )*
( 'returns' ParameterList )? Block
EnumValue = Identifier
EnumDefinition = 'enum' '{' EnumValue (',' EnumValue)* '}'
ParameterList = '(' ( VariableDeclaration (',' VariableDeclaration)* )? ')'
// semantic restriction: mappings and structs (recursively) containing mappings
// are not allowed in argument lists
VariableDeclaration = TypeName Identifier
TypeName = ElementaryTypeName | Identifier | Mapping
Mapping = 'mapping' '(' ElementaryTypeName '=>' TypeName ')'
Block = '{' Statement* '}'
Statement = IfStatement | WhileStatement | Block |
( Continue | Break | Return | VariableDefinition | ExpressionStatement ) ';'
ExpressionStatement = Expression
IfStatement = 'if' '(' Expression ')' Statement ( 'else' Statement )?
WhileStatement = 'while' '(' Expression ')' Statement
VardefOrExprStmt = Variabledefinition | ExpressionStatement
ForStatement = 'for' '(' (VardefOrExprStmt)? ';' (Expression)? ';' (ExpressionStatement)? ')' Statement
Continue = 'continue' ';'
Break = 'break' ';'
Return = 'return' Expression? ';'
VariableDefinition = VariableDeclaration ( = Expression )? ';'
Expression = Assignment | UnaryOperation | BinaryOperation | FunctionCall | NewExpression | IndexAccess |
MemberAccess | PrimaryExpression
// The expression syntax is actually much more complicated
Assignment = Expression (AssignmentOp Expression)
FunctionCall = Expression '(' Expression ( ',' Expression )* ')'
NewExpression = 'new' Identifier
MemberAccess = Expression '.' Identifier
IndexAccess = Expression '[' Expresison ']'
PrimaryExpression = Identifier | NumberLiteral | StringLiteral | ElementaryTypeName | '(' Expression ')'