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https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
Merge pull request #1414 from LefterisJP/sol_notImplementedFuncs
Interface contracts
This commit is contained in:
commit
eab085baf6
34
AST.cpp
34
AST.cpp
@ -21,6 +21,7 @@
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*/
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#include <algorithm>
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#include <boost/range/adaptor/reversed.hpp>
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#include <libsolidity/Utils.h>
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#include <libsolidity/AST.h>
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#include <libsolidity/ASTVisitor.h>
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@ -52,6 +53,7 @@ void ContractDefinition::checkTypeRequirements()
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baseSpecifier->checkTypeRequirements();
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checkIllegalOverrides();
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checkAbstractFunctions();
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FunctionDefinition const* constructor = getConstructor();
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if (constructor && !constructor->getReturnParameters().empty())
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@ -60,6 +62,7 @@ void ContractDefinition::checkTypeRequirements()
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FunctionDefinition const* fallbackFunction = nullptr;
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for (ASTPointer<FunctionDefinition> const& function: getDefinedFunctions())
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{
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if (function->getName().empty())
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{
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if (fallbackFunction)
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@ -71,6 +74,9 @@ void ContractDefinition::checkTypeRequirements()
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BOOST_THROW_EXCEPTION(fallbackFunction->getParameterList().createTypeError("Fallback function cannot take parameters."));
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}
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}
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if (!function->isFullyImplemented())
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setFullyImplemented(false);
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}
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for (ASTPointer<ModifierDefinition> const& modifier: getFunctionModifiers())
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modifier->checkTypeRequirements();
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@ -124,6 +130,28 @@ FunctionDefinition const* ContractDefinition::getFallbackFunction() const
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return nullptr;
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}
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void ContractDefinition::checkAbstractFunctions()
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{
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map<string, bool> functions;
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// Search from base to derived
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for (ContractDefinition const* contract: boost::adaptors::reverse(getLinearizedBaseContracts()))
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for (ASTPointer<FunctionDefinition> const& function: contract->getDefinedFunctions())
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{
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string const& name = function->getName();
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if (!function->isFullyImplemented() && functions.count(name) && functions[name])
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BOOST_THROW_EXCEPTION(function->createTypeError("Redeclaring an already implemented function as abstract"));
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functions[name] = function->isFullyImplemented();
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}
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for (auto const& it: functions)
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if (!it.second)
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{
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setFullyImplemented(false);
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break;
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}
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}
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void ContractDefinition::checkIllegalOverrides() const
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{
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// TODO unify this at a later point. for this we need to put the constness and the access specifier
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@ -316,8 +344,8 @@ void FunctionDefinition::checkTypeRequirements()
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modifier->checkTypeRequirements(isConstructor() ?
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dynamic_cast<ContractDefinition const&>(*getScope()).getBaseContracts() :
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vector<ASTPointer<InheritanceSpecifier>>());
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m_body->checkTypeRequirements();
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if (m_body)
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m_body->checkTypeRequirements();
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}
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string FunctionDefinition::externalSignature() const
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@ -649,6 +677,8 @@ void NewExpression::checkTypeRequirements()
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m_contract = dynamic_cast<ContractDefinition const*>(m_contractName->getReferencedDeclaration());
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if (!m_contract)
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BOOST_THROW_EXCEPTION(createTypeError("Identifier is not a contract."));
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if (!m_contract->isFullyImplemented())
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BOOST_THROW_EXCEPTION(m_contract->createTypeError("Trying to create an instance of an abstract contract."));
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shared_ptr<ContractType const> contractType = make_shared<ContractType>(*m_contract);
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TypePointers const& parameterTypes = contractType->getConstructorType()->getParameterTypes();
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m_type = make_shared<FunctionType>(parameterTypes, TypePointers{contractType},
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82
AST.h
82
AST.h
@ -196,6 +196,22 @@ protected:
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ASTPointer<ASTString> m_documentation;
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};
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/**
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* Abstract class that is added to AST nodes that can be marked as not being fully implemented
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*/
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class ImplementationOptional
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{
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public:
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explicit ImplementationOptional(bool _implemented): m_implemented(_implemented) {}
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/// @return whether this node is fully implemented or not
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bool isFullyImplemented() const { return m_implemented; }
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void setFullyImplemented(bool _implemented) { m_implemented = _implemented; }
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protected:
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bool m_implemented;
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};
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/// @}
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/**
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@ -203,20 +219,24 @@ protected:
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* document order. It first visits all struct declarations, then all variable declarations and
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* finally all function declarations.
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*/
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class ContractDefinition: public Declaration, public Documented
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class ContractDefinition: public Declaration, public Documented, public ImplementationOptional
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{
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public:
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ContractDefinition(SourceLocation const& _location,
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ASTPointer<ASTString> const& _name,
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ASTPointer<ASTString> const& _documentation,
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std::vector<ASTPointer<InheritanceSpecifier>> const& _baseContracts,
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std::vector<ASTPointer<StructDefinition>> const& _definedStructs,
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std::vector<ASTPointer<EnumDefinition>> const& _definedEnums,
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std::vector<ASTPointer<VariableDeclaration>> const& _stateVariables,
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std::vector<ASTPointer<FunctionDefinition>> const& _definedFunctions,
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std::vector<ASTPointer<ModifierDefinition>> const& _functionModifiers,
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std::vector<ASTPointer<EventDefinition>> const& _events):
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Declaration(_location, _name), Documented(_documentation),
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ContractDefinition(
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SourceLocation const& _location,
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ASTPointer<ASTString> const& _name,
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ASTPointer<ASTString> const& _documentation,
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std::vector<ASTPointer<InheritanceSpecifier>> const& _baseContracts,
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std::vector<ASTPointer<StructDefinition>> const& _definedStructs,
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std::vector<ASTPointer<EnumDefinition>> const& _definedEnums,
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std::vector<ASTPointer<VariableDeclaration>> const& _stateVariables,
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std::vector<ASTPointer<FunctionDefinition>> const& _definedFunctions,
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std::vector<ASTPointer<ModifierDefinition>> const& _functionModifiers,
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std::vector<ASTPointer<EventDefinition>> const& _events
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):
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Declaration(_location, _name),
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Documented(_documentation),
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ImplementationOptional(true),
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m_baseContracts(_baseContracts),
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m_definedStructs(_definedStructs),
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m_definedEnums(_definedEnums),
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@ -263,6 +283,7 @@ public:
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private:
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void checkIllegalOverrides() const;
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void checkAbstractFunctions();
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std::vector<std::pair<FixedHash<4>, FunctionTypePointer>> const& getInterfaceFunctionList() const;
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@ -378,24 +399,29 @@ private:
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std::vector<ASTPointer<VariableDeclaration>> m_parameters;
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};
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class FunctionDefinition: public Declaration, public VariableScope, public Documented
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class FunctionDefinition: public Declaration, public VariableScope, public Documented, public ImplementationOptional
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{
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public:
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FunctionDefinition(SourceLocation const& _location, ASTPointer<ASTString> const& _name,
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Declaration::Visibility _visibility, bool _isConstructor,
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ASTPointer<ASTString> const& _documentation,
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ASTPointer<ParameterList> const& _parameters,
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bool _isDeclaredConst,
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std::vector<ASTPointer<ModifierInvocation>> const& _modifiers,
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ASTPointer<ParameterList> const& _returnParameters,
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ASTPointer<Block> const& _body):
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Declaration(_location, _name, _visibility), Documented(_documentation),
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m_isConstructor(_isConstructor),
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m_parameters(_parameters),
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m_isDeclaredConst(_isDeclaredConst),
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m_functionModifiers(_modifiers),
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m_returnParameters(_returnParameters),
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m_body(_body)
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FunctionDefinition(
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SourceLocation const& _location,
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ASTPointer<ASTString> const& _name,
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Declaration::Visibility _visibility, bool _isConstructor,
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ASTPointer<ASTString> const& _documentation,
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ASTPointer<ParameterList> const& _parameters,
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bool _isDeclaredConst,
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std::vector<ASTPointer<ModifierInvocation>> const& _modifiers,
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ASTPointer<ParameterList> const& _returnParameters,
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ASTPointer<Block> const& _body
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):
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Declaration(_location, _name, _visibility),
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Documented(_documentation),
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ImplementationOptional(_body != nullptr),
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m_isConstructor(_isConstructor),
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m_parameters(_parameters),
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m_isDeclaredConst(_isDeclaredConst),
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m_functionModifiers(_modifiers),
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m_returnParameters(_returnParameters),
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m_body(_body)
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{}
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virtual void accept(ASTVisitor& _visitor) override;
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@ -175,7 +175,8 @@ void FunctionDefinition::accept(ASTVisitor& _visitor)
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if (m_returnParameters)
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m_returnParameters->accept(_visitor);
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listAccept(m_functionModifiers, _visitor);
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m_body->accept(_visitor);
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if (m_body)
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m_body->accept(_visitor);
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}
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_visitor.endVisit(*this);
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}
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@ -188,7 +189,8 @@ void FunctionDefinition::accept(ASTConstVisitor& _visitor) const
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if (m_returnParameters)
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m_returnParameters->accept(_visitor);
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listAccept(m_functionModifiers, _visitor);
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m_body->accept(_visitor);
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if (m_body)
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m_body->accept(_visitor);
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}
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_visitor.endVisit(*this);
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}
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@ -138,6 +138,8 @@ void CompilerStack::compile(bool _optimize)
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for (ASTPointer<ASTNode> const& node: source->ast->getNodes())
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if (ContractDefinition* contract = dynamic_cast<ContractDefinition*>(node.get()))
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{
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if (!contract->isFullyImplemented())
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continue;
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shared_ptr<Compiler> compiler = make_shared<Compiler>(_optimize);
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compiler->compileContract(*contract, contractBytecode);
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Contract& compiledContract = m_contracts[contract->getName()];
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24
Parser.cpp
24
Parser.cpp
@ -164,8 +164,17 @@ ASTPointer<ContractDefinition> Parser::parseContractDefinition()
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}
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nodeFactory.markEndPosition();
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expectToken(Token::RBrace);
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return nodeFactory.createNode<ContractDefinition>(name, docString, baseContracts, structs, enums,
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stateVariables, functions, modifiers, events);
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return nodeFactory.createNode<ContractDefinition>(
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name,
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docString,
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baseContracts,
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structs,
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enums,
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stateVariables,
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functions,
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modifiers,
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events
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);
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}
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ASTPointer<InheritanceSpecifier> Parser::parseInheritanceSpecifier()
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@ -247,8 +256,15 @@ ASTPointer<FunctionDefinition> Parser::parseFunctionDefinition(ASTString const*
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}
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else
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returnParameters = createEmptyParameterList();
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ASTPointer<Block> block = parseBlock();
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nodeFactory.setEndPositionFromNode(block);
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ASTPointer<Block> block = ASTPointer<Block>();
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nodeFactory.markEndPosition();
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if (m_scanner->getCurrentToken() != Token::Semicolon)
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{
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block = parseBlock();
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nodeFactory.setEndPositionFromNode(block);
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}
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else
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m_scanner->next(); // just consume the ';'
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bool const c_isConstructor = (_contractName && *name == *_contractName);
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return nodeFactory.createNode<FunctionDefinition>(name, visibility, c_isConstructor, docstring,
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parameters, isDeclaredConst, modifiers,
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