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Merge pull request #9428 from ethereum/removeVar

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Remove special treatment of ``var``.
This commit is contained in:
chriseth 2020-07-20 18:43:44 +02:00 committed by GitHub
commit 10f93fbd8a
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39 changed files with 272 additions and 535 deletions
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1
Changelog.md
View File

@ -25,6 +25,7 @@ Language Features:
* Inheritance: Allow overrides to have stricter state mutability: ``view`` can override ``nonpayable`` and ``pure`` can override ``view``.
Compiler Features:
* Variable declarations using the ``var`` keyword are not recognized anymore.
Bugfixes:

2
liblangutil/Token.h
View File

@ -189,7 +189,6 @@ namespace solidity::langutil
K(Throw, "throw", 0) \
K(Type, "type", 0) \
K(Using, "using", 0) \
K(Var, "var", 0) \
K(View, "view", 0) \
K(Virtual, "virtual", 0) \
K(While, "while", 0) \
@ -265,6 +264,7 @@ namespace solidity::langutil
K(Typedef, "typedef", 0) \
K(TypeOf, "typeof", 0) \
K(Unchecked, "unchecked", 0) \
K(Var, "var", 0) \
\
/* Illegal token - not able to scan. */ \
T(Illegal, "ILLEGAL", 0) \

11
libsolidity/analysis/DeclarationTypeChecker.cpp
View File

@ -293,15 +293,6 @@ void DeclarationTypeChecker::endVisit(VariableDeclaration const& _variable)
"The \"immutable\" keyword can only be used for state variables."
);
if (!_variable.typeName())
{
// This can still happen in very unusual cases where a developer uses constructs, such as
// `var a;`, however, such code will have generated errors already.
// However, we cannot blindingly solAssert() for that here, as the TypeChecker (which is
// invoking ReferencesResolver) is generating it, so the error is most likely(!) generated
// after this step.
return;
}
using Location = VariableDeclaration::Location;
Location varLoc = _variable.referenceLocation();
DataLocation typeLoc = DataLocation::Memory;
@ -382,7 +373,7 @@ void DeclarationTypeChecker::endVisit(VariableDeclaration const& _variable)
solAssert(!_variable.hasReferenceOrMappingType(), "Data location not properly set.");
}
TypePointer type = _variable.typeName()->annotation().type;
TypePointer type = _variable.typeName().annotation().type;
if (auto ref = dynamic_cast<ReferenceType const*>(type))
{
bool isPointer = !_variable.isStateVariable();

217
libsolidity/analysis/TypeChecker.cpp
View File

@ -466,8 +466,7 @@ bool TypeChecker::visit(FunctionDefinition const& _function)
bool TypeChecker::visit(VariableDeclaration const& _variable)
{
if (_variable.typeName())
_variable.typeName()->accept(*this);
_variable.typeName().accept(*this);
// type is filled either by ReferencesResolver directly from the type name or by
// TypeChecker at the VariableDeclarationStatement level.
@ -591,15 +590,11 @@ bool TypeChecker::visit(VariableDeclaration const& _variable)
if (_variable.isStateVariable())
m_errorReporter.warning(3408_error, _variable.location(), collisionMessage(_variable.name(), true));
else
m_errorReporter.warning(
2332_error,
_variable.typeName() ? _variable.typeName()->location() : _variable.location(),
collisionMessage(varType->canonicalName(), false)
);
m_errorReporter.warning(2332_error, _variable.typeName().location(), collisionMessage(varType->canonicalName(), false));
}
vector<Type const*> oversizedSubtypes = frontend::oversizedSubtypes(*varType);
for (Type const* subtype: oversizedSubtypes)
m_errorReporter.warning(7325_error, _variable.typeName()->location(), collisionMessage(subtype->canonicalName(), false));
m_errorReporter.warning(7325_error, _variable.typeName().location(), collisionMessage(subtype->canonicalName(), false));
}
return false;
@ -1106,81 +1101,23 @@ void TypeChecker::endVisit(EmitStatement const& _emit)
m_errorReporter.typeError(9292_error, _emit.eventCall().expression().location(), "Expression has to be an event invocation.");
}
namespace
{
/**
* @returns a suggested left-hand-side of a multi-variable declaration contairing
* the variable declarations given in @a _decls.
*/
string createTupleDecl(vector<ASTPointer<VariableDeclaration>> const& _decls)
{
vector<string> components;
for (ASTPointer<VariableDeclaration> const& decl: _decls)
if (decl)
{
solAssert(decl->annotation().type, "");
components.emplace_back(decl->annotation().type->toString(false) + " " + decl->name());
}
else
components.emplace_back();
if (_decls.size() == 1)
return components.front();
else
return "(" + boost::algorithm::join(components, ", ") + ")";
}
bool typeCanBeExpressed(vector<ASTPointer<VariableDeclaration>> const& decls)
{
for (ASTPointer<VariableDeclaration> const& decl: decls)
{
// skip empty tuples (they can be expressed of course)
if (!decl)
continue;
if (!decl->annotation().type)
return false;
if (auto functionType = dynamic_cast<FunctionType const*>(decl->annotation().type))
if (
functionType->kind() != FunctionType::Kind::Internal &&
functionType->kind() != FunctionType::Kind::External
)
return false;
}
return true;
}
}
bool TypeChecker::visit(VariableDeclarationStatement const& _statement)
{
if (!_statement.initialValue())
{
// No initial value is only permitted for single variables with specified type.
// This usually already results in a parser error.
if (_statement.declarations().size() != 1 || !_statement.declarations().front())
{
if (std::all_of(
_statement.declarations().begin(),
_statement.declarations().end(),
[](ASTPointer<VariableDeclaration> const& declaration) { return declaration == nullptr; }
))
{
// The syntax checker has already generated an error for this case (empty LHS tuple).
solAssert(m_errorReporter.hasErrors(), "");
solAssert(m_errorReporter.hasErrors(), "");
// It is okay to return here, as there are no named components on the
// left-hand-side that could cause any damage later.
return false;
}
else
// Bailing out *fatal* here, as those (untyped) vars may be used later, and diagnostics wouldn't be helpful then.
m_errorReporter.fatalTypeError(4626_error, _statement.location(), "Use of the \"var\" keyword is disallowed.");
// It is okay to return here, as there are no named components on the
// left-hand-side that could cause any damage later.
return false;
}
VariableDeclaration const& varDecl = *_statement.declarations().front();
if (!varDecl.annotation().type)
m_errorReporter.fatalTypeError(6983_error, _statement.location(), "Use of the \"var\" keyword is disallowed.");
solAssert(varDecl.annotation().type, "");
if (dynamic_cast<MappingType const*>(type(varDecl)))
m_errorReporter.typeError(
@ -1217,8 +1154,6 @@ bool TypeChecker::visit(VariableDeclarationStatement const& _statement)
")."
);
bool autoTypeDeductionNeeded = false;
for (size_t i = 0; i < min(variables.size(), valueTypes.size()); ++i)
{
if (!variables[i])
@ -1227,95 +1162,45 @@ bool TypeChecker::visit(VariableDeclarationStatement const& _statement)
solAssert(!var.value(), "Value has to be tied to statement.");
TypePointer const& valueComponentType = valueTypes[i];
solAssert(!!valueComponentType, "");
if (!var.annotation().type)
{
autoTypeDeductionNeeded = true;
solAssert(var.annotation().type, "");
// Infer type from value.
solAssert(!var.typeName(), "");
var.annotation().type = valueComponentType->mobileType();
if (!var.annotation().type)
{
if (valueComponentType->category() == Type::Category::RationalNumber)
m_errorReporter.fatalTypeError(
6963_error,
_statement.initialValue()->location(),
"Invalid rational " +
valueComponentType->toString() +
" (absolute value too large or division by zero)."
);
else
solAssert(false, "");
}
else if (*var.annotation().type == *TypeProvider::emptyTuple())
solAssert(false, "Cannot declare variable with void (empty tuple) type.");
else if (valueComponentType->category() == Type::Category::RationalNumber)
{
string typeName = var.annotation().type->toString(true);
string extension;
if (auto type = dynamic_cast<IntegerType const*>(var.annotation().type))
{
unsigned numBits = type->numBits();
bool isSigned = type->isSigned();
solAssert(numBits > 0, "");
string minValue;
string maxValue;
if (isSigned)
{
numBits--;
minValue = "-" + bigint(bigint(1) << numBits).str();
}
else
minValue = "0";
maxValue = bigint((bigint(1) << numBits) - 1).str();
extension = ", which can hold values between " + minValue + " and " + maxValue;
}
else
solAssert(dynamic_cast<FixedPointType const*>(var.annotation().type), "Unknown type.");
}
var.accept(*this);
}
else
var.accept(*this);
BoolResult result = valueComponentType->isImplicitlyConvertibleTo(*var.annotation().type);
if (!result)
{
var.accept(*this);
BoolResult result = valueComponentType->isImplicitlyConvertibleTo(*var.annotation().type);
if (!result)
auto errorMsg = "Type " +
valueComponentType->toString() +
" is not implicitly convertible to expected type " +
var.annotation().type->toString();
if (
valueComponentType->category() == Type::Category::RationalNumber &&
dynamic_cast<RationalNumberType const&>(*valueComponentType).isFractional() &&
valueComponentType->mobileType()
)
{
auto errorMsg = "Type " +
valueComponentType->toString() +
" is not implicitly convertible to expected type " +
var.annotation().type->toString();
if (
valueComponentType->category() == Type::Category::RationalNumber &&
dynamic_cast<RationalNumberType const&>(*valueComponentType).isFractional() &&
valueComponentType->mobileType()
)
{
if (var.annotation().type->operator==(*valueComponentType->mobileType()))
m_errorReporter.typeError(
5107_error,
_statement.location(),
errorMsg + ", but it can be explicitly converted."
);
else
m_errorReporter.typeError(
4486_error,
_statement.location(),
errorMsg +
". Try converting to type " +
valueComponentType->mobileType()->toString() +
" or use an explicit conversion."
);
}
else
m_errorReporter.typeErrorConcatenateDescriptions(
9574_error,
if (var.annotation().type->operator==(*valueComponentType->mobileType()))
m_errorReporter.typeError(
5107_error,
_statement.location(),
errorMsg + ".",
result.message()
errorMsg + ", but it can be explicitly converted."
);
else
m_errorReporter.typeError(
4486_error,
_statement.location(),
errorMsg +
". Try converting to type " +
valueComponentType->mobileType()->toString() +
" or use an explicit conversion."
);
}
else
m_errorReporter.typeErrorConcatenateDescriptions(
9574_error,
_statement.location(),
errorMsg + ".",
result.message()
);
}
}
@ -1327,24 +1212,6 @@ bool TypeChecker::visit(VariableDeclarationStatement const& _statement)
BOOST_THROW_EXCEPTION(FatalError());
}
if (autoTypeDeductionNeeded)
{
if (!typeCanBeExpressed(variables))
m_errorReporter.syntaxError(
3478_error,
_statement.location(),
"Use of the \"var\" keyword is disallowed. "
"Type cannot be expressed in syntax."
);
else
m_errorReporter.syntaxError(
1719_error,
_statement.location(),
"Use of the \"var\" keyword is disallowed. "
"Use explicit declaration `" + createTupleDecl(variables) + " = ...´ instead."
);
}
return false;
}

23
libsolidity/ast/AST.cpp
View File

@ -614,9 +614,8 @@ bool VariableDeclaration::isEventParameter() const
bool VariableDeclaration::hasReferenceOrMappingType() const
{
solAssert(typeName(), "");
solAssert(typeName()->annotation().type, "Can only be called after reference resolution");
Type const* type = typeName()->annotation().type;
solAssert(typeName().annotation().type, "Can only be called after reference resolution");
Type const* type = typeName().annotation().type;
return type->category() == Type::Category::Mapping || dynamic_cast<ReferenceType const*>(type);
}
@ -642,22 +641,8 @@ set<VariableDeclaration::Location> VariableDeclaration::allowedDataLocations() c
return locations;
}
else if (isLocalVariable())
{
solAssert(typeName(), "");
auto dataLocations = [](TypePointer _type, auto&& _recursion) -> set<Location> {
solAssert(_type, "Can only be called after reference resolution");
switch (_type->category())
{
case Type::Category::Array:
return _recursion(dynamic_cast<ArrayType const*>(_type)->baseType(), _recursion);
case Type::Category::Mapping:
return set<Location>{ Location::Storage };
default:
return set<Location>{ Location::Memory, Location::Storage, Location::CallData };
}
};
return dataLocations(typeName()->annotation().type, dataLocations);
}
// Further restrictions will be imposed later on.
return set<Location>{ Location::Memory, Location::Storage, Location::CallData };
else
// Struct members etc.
return set<Location>{ Location::Unspecified };

9
libsolidity/ast/AST.h
View File

@ -895,13 +895,16 @@ public:
m_isIndexed(_isIndexed),
m_mutability(_mutability),
m_overrides(std::move(_overrides)),
m_location(_referenceLocation) {}
m_location(_referenceLocation)
{
solAssert(m_typeName, "");
}
void accept(ASTVisitor& _visitor) override;
void accept(ASTConstVisitor& _visitor) const override;
TypeName* typeName() const { return m_typeName.get(); }
TypeName const& typeName() const { return *m_typeName; }
ASTPointer<Expression> const& value() const { return m_value; }
bool isLValue() const override;
@ -964,7 +967,7 @@ protected:
Visibility defaultVisibility() const override { return Visibility::Internal; }
private:
ASTPointer<TypeName> m_typeName; ///< can be empty ("var")
ASTPointer<TypeName> m_typeName;
/// Initially assigned value, can be missing. For local variables, this is stored inside
/// VariableDeclarationStatement and not here.
ASTPointer<Expression> m_value;

2
libsolidity/ast/ASTJsonConverter.cpp
View File

@ -386,7 +386,7 @@ bool ASTJsonConverter::visit(VariableDeclaration const& _node)
{
std::vector<pair<string, Json::Value>> attributes = {
make_pair("name", _node.name()),
make_pair("typeName", toJsonOrNull(_node.typeName())),
make_pair("typeName", toJson(_node.typeName())),
make_pair("constant", _node.isConstant()),
make_pair("mutability", VariableDeclaration::mutabilityToString(_node.mutability())),
make_pair("stateVariable", _node.isStateVariable()),

97
libsolidity/parsing/Parser.cpp
View File

@ -677,16 +677,10 @@ ASTPointer<VariableDeclaration> Parser::parseVariableDeclaration(
RecursionGuard recursionGuard(*this);
ASTNodeFactory nodeFactory = _lookAheadArrayType ?
ASTNodeFactory(*this, _lookAheadArrayType) : ASTNodeFactory(*this);
ASTPointer<TypeName> type;
ASTPointer<StructuredDocumentation> const documentation = parseStructuredDocumentation();
if (_lookAheadArrayType)
type = _lookAheadArrayType;
else
{
type = parseTypeName(_options.allowVar);
if (type != nullptr)
nodeFactory.setEndPositionFromNode(type);
}
ASTPointer<TypeName> type = _lookAheadArrayType ? _lookAheadArrayType : parseTypeName();
nodeFactory.setEndPositionFromNode(type);
if (!_options.isStateVariable && documentation != nullptr)
parserError(2837_error, "Only state variables can have a docstring.");
@ -753,8 +747,6 @@ ASTPointer<VariableDeclaration> Parser::parseVariableDeclaration(
{
if (location != VariableDeclaration::Location::Unspecified)
parserError(3548_error, "Location already specified.");
else if (!type)
parserError(7439_error, "Location specifier needs explicit type name.");
else
{
switch (token)
@ -781,10 +773,7 @@ ASTPointer<VariableDeclaration> Parser::parseVariableDeclaration(
}
if (_options.allowEmptyName && m_scanner->currentToken() != Token::Identifier)
{
identifier = make_shared<ASTString>("");
solAssert(!_options.allowVar, ""); // allowEmptyName && allowVar makes no sense
}
else
{
nodeFactory.markEndPosition();
@ -908,7 +897,7 @@ ASTPointer<UsingForDirective> Parser::parseUsingDirective()
if (m_scanner->currentToken() == Token::Mul)
m_scanner->next();
else
typeName = parseTypeName(false);
typeName = parseTypeName();
nodeFactory.markEndPosition();
expectToken(Token::Semicolon);
return nodeFactory.createNode<UsingForDirective>(library, typeName);
@ -971,7 +960,7 @@ ASTPointer<TypeName> Parser::parseTypeNameSuffix(ASTPointer<TypeName> type, ASTN
return type;
}
ASTPointer<TypeName> Parser::parseTypeName(bool _allowVar)
ASTPointer<TypeName> Parser::parseTypeName()
{
RecursionGuard recursionGuard(*this);
ASTNodeFactory nodeFactory(*this);
@ -1004,12 +993,6 @@ ASTPointer<TypeName> Parser::parseTypeName(bool _allowVar)
}
type = nodeFactory.createNode<ElementaryTypeName>(elemTypeName, stateMutability);
}
else if (token == Token::Var)
{
if (!_allowVar)
parserError(7059_error, "Expected explicit type name.");
m_scanner->next();
}
else if (token == Token::Function)
type = parseFunctionType();
else if (token == Token::Mapping)
@ -1019,9 +1002,10 @@ ASTPointer<TypeName> Parser::parseTypeName(bool _allowVar)
else
fatalParserError(3546_error, "Expected type name");
if (type)
// Parse "[...]" postfixes for arrays.
type = parseTypeNameSuffix(type, nodeFactory);
solAssert(type, "");
// Parse "[...]" postfixes for arrays.
type = parseTypeNameSuffix(type, nodeFactory);
return type;
}
@ -1062,8 +1046,7 @@ ASTPointer<Mapping> Parser::parseMapping()
else
fatalParserError(1005_error, "Expected elementary type name or identifier for mapping key type");
expectToken(Token::Arrow);
bool const allowVar = false;
ASTPointer<TypeName> valueType = parseTypeName(allowVar);
ASTPointer<TypeName> valueType = parseTypeName();
nodeFactory.markEndPosition();
expectToken(Token::RParen);
return nodeFactory.createNode<Mapping>(keyType, valueType);
@ -1544,53 +1527,14 @@ ASTPointer<VariableDeclarationStatement> Parser::parseVariableDeclarationStateme
ASTNodeFactory nodeFactory(*this);
if (_lookAheadArrayType)
nodeFactory.setLocation(_lookAheadArrayType->location());
VarDeclParserOptions options;
options.allowLocationSpecifier = true;
vector<ASTPointer<VariableDeclaration>> variables;
variables.emplace_back(parseVariableDeclaration(options, _lookAheadArrayType));
nodeFactory.setEndPositionFromNode(variables.back());
ASTPointer<Expression> value;
if (
!_lookAheadArrayType &&
m_scanner->currentToken() == Token::Var &&
m_scanner->peekNextToken() == Token::LParen
)
{
// Parse `var (a, b, ,, c) = ...` into a single VariableDeclarationStatement with multiple variables.
m_scanner->next();
m_scanner->next();
if (m_scanner->currentToken() != Token::RParen)
while (true)
{
ASTPointer<VariableDeclaration> var;
if (
m_scanner->currentToken() != Token::Comma &&
m_scanner->currentToken() != Token::RParen
)
{
ASTNodeFactory varDeclNodeFactory(*this);
varDeclNodeFactory.markEndPosition();
ASTPointer<ASTString> name = expectIdentifierToken();
var = varDeclNodeFactory.createNode<VariableDeclaration>(
ASTPointer<TypeName>(),
name,
ASTPointer<Expression>(),
Visibility::Default
);
}
variables.push_back(var);
if (m_scanner->currentToken() == Token::RParen)
break;
else
expectToken(Token::Comma);
}
nodeFactory.markEndPosition();
m_scanner->next();
}
else
{
VarDeclParserOptions options;
options.allowVar = true;
options.allowLocationSpecifier = true;
variables.push_back(parseVariableDeclaration(options, _lookAheadArrayType));
nodeFactory.setEndPositionFromNode(variables.back());
}
if (m_scanner->currentToken() == Token::Assign)
{
m_scanner->next();
@ -1704,11 +1648,8 @@ ASTPointer<Expression> Parser::parseLeftHandSideExpression(
else if (m_scanner->currentToken() == Token::New)
{
expectToken(Token::New);
ASTPointer<TypeName> typeName(parseTypeName(false));
if (typeName)
nodeFactory.setEndPositionFromNode(typeName);
else
nodeFactory.markEndPosition();
ASTPointer<TypeName> typeName(parseTypeName());
nodeFactory.setEndPositionFromNode(typeName);
expression = nodeFactory.createNode<NewExpression>(typeName);
}
else if (m_scanner->currentToken() == Token::Payable)
@ -2048,7 +1989,7 @@ Parser::LookAheadInfo Parser::peekStatementType() const
Token token(m_scanner->currentToken());
bool mightBeTypeName = (TokenTraits::isElementaryTypeName(token) || token == Token::Identifier);
if (token == Token::Mapping || token == Token::Function || token == Token::Var)
if (token == Token::Mapping || token == Token::Function)
return LookAheadInfo::VariableDeclaration;
if (mightBeTypeName)
{

3
libsolidity/parsing/Parser.h
View File

@ -57,7 +57,6 @@ private:
// https://stackoverflow.com/questions/17430377
VarDeclParserOptions() {}
bool allowVar = false;
bool isStateVariable = false;
bool allowIndexed = false;
bool allowEmptyName = false;
@ -107,7 +106,7 @@ private:
ASTPointer<Identifier> parseIdentifier();
ASTPointer<UserDefinedTypeName> parseUserDefinedTypeName();
ASTPointer<TypeName> parseTypeNameSuffix(ASTPointer<TypeName> type, ASTNodeFactory& nodeFactory);
ASTPointer<TypeName> parseTypeName(bool _allowVar);
ASTPointer<TypeName> parseTypeName();
ASTPointer<FunctionTypeName> parseFunctionType();
ASTPointer<Mapping> parseMapping();
ASTPointer<ParameterList> parseParameterList(

54
test/libsolidity/ASTJSON/non_utf8.json
View File

@ -4,10 +4,10 @@
{
"C":
[
8
9
]
},
"id": 9,
"id": 10,
"nodeType": "SourceUnit",
"nodes":
[
@ -17,10 +17,10 @@
"contractDependencies": [],
"contractKind": "contract",
"fullyImplemented": true,
"id": 8,
"id": 9,
"linearizedBaseContracts":
[
8
9
],
"name": "C",
"nodeType": "ContractDefinition",
@ -29,48 +29,60 @@
{
"body":
{
"id": 6,
"id": 7,
"nodeType": "Block",
"src": "33:20:1",
"src": "33:30:1",
"statements":
[
{
"assignments":
[
3
4
],
"declarations":
[
{
"constant": false,
"id": 3,
"id": 4,
"mutability": "mutable",
"name": "x",
"nodeType": "VariableDeclaration",
"scope": 6,
"src": "35:5:1",
"scope": 7,
"src": "35:15:1",
"stateVariable": false,
"storageLocation": "default",
"storageLocation": "memory",
"typeDescriptions":
{
"typeIdentifier": "t_string_memory_ptr",
"typeString": "string"
},
"typeName":
{
"id": 3,
"name": "string",
"nodeType": "ElementaryTypeName",
"src": "35:6:1",
"typeDescriptions":
{
"typeIdentifier": "t_string_storage_ptr",
"typeString": "string"
}
},
"visibility": "internal"
}
],
"id": 5,
"id": 6,
"initialValue":
{
"hexValue": "ff",
"id": 4,
"id": 5,
"isConstant": false,
"isLValue": false,
"isPure": true,
"kind": "string",
"lValueRequested": false,
"nodeType": "Literal",
"src": "43:7:1",
"src": "53:7:1",
"typeDescriptions":
{
"typeIdentifier": "t_stringliteral_8b1a944cf13a9a1c08facb2c9e98623ef3254d2ddb48113885c3e8e97fec8db9",
@ -78,12 +90,12 @@
}
},
"nodeType": "VariableDeclarationStatement",
"src": "35:15:1"
"src": "35:25:1"
}
]
},
"functionSelector": "26121ff0",
"id": 7,
"id": 8,
"implemented": true,
"kind": "function",
"modifiers": [],
@ -103,16 +115,16 @@
"parameters": [],
"src": "33:0:1"
},
"scope": 8,
"src": "13:40:1",
"scope": 9,
"src": "13:50:1",
"stateMutability": "nonpayable",
"virtual": false,
"visibility": "public"
}
],
"scope": 9,
"src": "0:55:1"
"scope": 10,
"src": "0:65:1"
}
],
"src": "0:56:1"
"src": "0:66:1"
}

2
test/libsolidity/ASTJSON/non_utf8.sol
View File

@ -1,3 +1,3 @@
contract C { function f() public { var x = hex"ff"; } }
contract C { function f() public { string memory x = hex"ff"; } }
// ----

56
test/libsolidity/ASTJSON/non_utf8_legacy.json
View File

@ -6,7 +6,7 @@
{
"C":
[
8
9
]
}
},
@ -28,10 +28,10 @@
"fullyImplemented": true,
"linearizedBaseContracts":
[
8
9
],
"name": "C",
"scope": 9
"scope": 10
},
"children":
[
@ -47,7 +47,7 @@
null
],
"name": "f",
"scope": 8,
"scope": 9,
"stateMutability": "nonpayable",
"virtual": false,
"visibility": "public"
@ -88,7 +88,7 @@
{
"assignments":
[
3
4
]
},
"children":
@ -99,16 +99,28 @@
"constant": false,
"mutability": "mutable",
"name": "x",
"scope": 6,
"scope": 7,
"stateVariable": false,
"storageLocation": "default",
"storageLocation": "memory",
"type": "string",
"visibility": "internal"
},
"children": [],
"id": 3,
"children":
[
{
"attributes":
{
"name": "string",
"type": "string"
},
"id": 3,
"name": "ElementaryTypeName",
"src": "35:6:1"
}
],
"id": 4,
"name": "VariableDeclaration",
"src": "35:5:1"
"src": "35:15:1"
},
{
"attributes":
@ -121,32 +133,32 @@
"token": "string",
"type": "literal_string (contains invalid UTF-8 sequence at position 0)"
},
"id": 4,
"id": 5,
"name": "Literal",
"src": "43:7:1"
"src": "53:7:1"
}
],
"id": 5,
"id": 6,
"name": "VariableDeclarationStatement",
"src": "35:15:1"
"src": "35:25:1"
}
],
"id": 6,
"id": 7,
"name": "Block",
"src": "33:20:1"
"src": "33:30:1"
}
],
"id": 7,
"id": 8,
"name": "FunctionDefinition",
"src": "13:40:1"
"src": "13:50:1"
}
],
"id": 8,
"id": 9,
"name": "ContractDefinition",
"src": "0:55:1"
"src": "0:65:1"
}
],
"id": 9,
"id": 10,
"name": "SourceUnit",
"src": "0:56:1"
"src": "0:66:1"
}

78
test/libsolidity/ASTJSON/source_location.json
View File

@ -4,10 +4,10 @@
{
"C":
[
11
12
]
},
"id": 12,
"id": 13,
"nodeType": "SourceUnit",
"nodes":
[
@ -17,10 +17,10 @@
"contractDependencies": [],
"contractKind": "contract",
"fullyImplemented": true,
"id": 11,
"id": 12,
"linearizedBaseContracts":
[
11
12
],
"name": "C",
"nodeType": "ContractDefinition",
@ -29,48 +29,60 @@
{
"body":
{
"id": 9,
"id": 10,
"nodeType": "Block",
"src": "26:19:1",
"src": "26:20:1",
"statements":
[
{
"assignments":
[
3
4
],
"declarations":
[
{
"constant": false,
"id": 3,
"id": 4,
"mutability": "mutable",
"name": "x",
"nodeType": "VariableDeclaration",
"scope": 9,
"src": "28:5:1",
"scope": 10,
"src": "28:6:1",
"stateVariable": false,
"storageLocation": "default",
"typeDescriptions":
{
"typeIdentifier": "t_uint8",
"typeString": "uint8"
"typeIdentifier": "t_uint256",
"typeString": "uint256"
},
"typeName":
{
"id": 3,
"name": "uint",
"nodeType": "ElementaryTypeName",
"src": "28:4:1",
"typeDescriptions":
{
"typeIdentifier": "t_uint256",
"typeString": "uint256"
}
},
"visibility": "internal"
}
],
"id": 5,
"id": 6,
"initialValue":
{
"hexValue": "32",
"id": 4,
"id": 5,
"isConstant": false,
"isLValue": false,
"isPure": true,
"kind": "number",
"lValueRequested": false,
"nodeType": "Literal",
"src": "36:1:1",
"src": "37:1:1",
"typeDescriptions":
{
"typeIdentifier": "t_rational_2_by_1",
@ -79,12 +91,12 @@
"value": "2"
},
"nodeType": "VariableDeclarationStatement",
"src": "28:9:1"
"src": "28:10:1"
},
{
"expression":
{
"id": 7,
"id": 8,
"isConstant": false,
"isLValue": false,
"isPure": false,
@ -92,35 +104,35 @@
"nodeType": "UnaryOperation",
"operator": "++",
"prefix": false,
"src": "39:3:1",
"src": "40:3:1",
"subExpression":
{
"id": 6,
"id": 7,
"name": "x",
"nodeType": "Identifier",
"overloadedDeclarations": [],
"referencedDeclaration": 3,
"src": "39:1:1",
"referencedDeclaration": 4,
"src": "40:1:1",
"typeDescriptions":
{
"typeIdentifier": "t_uint8",
"typeString": "uint8"
"typeIdentifier": "t_uint256",
"typeString": "uint256"
}
},
"typeDescriptions":
{
"typeIdentifier": "t_uint8",
"typeString": "uint8"
"typeIdentifier": "t_uint256",
"typeString": "uint256"
}
},
"id": 8,
"id": 9,
"nodeType": "ExpressionStatement",
"src": "39:3:1"
"src": "40:3:1"
}
]
},
"functionSelector": "26121ff0",
"id": 10,
"id": 11,
"implemented": true,
"kind": "function",
"modifiers": [],
@ -140,16 +152,16 @@
"parameters": [],
"src": "26:0:1"
},
"scope": 11,
"src": "13:32:1",
"scope": 12,
"src": "13:33:1",
"stateMutability": "nonpayable",
"virtual": false,
"visibility": "public"
}
],
"scope": 12,
"src": "0:47:1"
"scope": 13,
"src": "0:48:1"
}
],
"src": "0:48:1"
"src": "0:49:1"
}

2
test/libsolidity/ASTJSON/source_location.sol
View File

@ -1,3 +1,3 @@
contract C { function f() { var x = 2; x++; } }
contract C { function f() { uint x = 2; x++; } }
// ----

74
test/libsolidity/ASTJSON/source_location_legacy.json
View File

@ -6,7 +6,7 @@
{
"C":
[
11
12
]
}
},
@ -28,10 +28,10 @@
"fullyImplemented": true,
"linearizedBaseContracts":
[
11
12
],
"name": "C",
"scope": 12
"scope": 13
},
"children":
[
@ -47,7 +47,7 @@
null
],
"name": "f",
"scope": 11,
"scope": 12,
"stateMutability": "nonpayable",
"virtual": false,
"visibility": "public"
@ -88,7 +88,7 @@
{
"assignments":
[
3
4
]
},
"children":
@ -99,16 +99,28 @@
"constant": false,
"mutability": "mutable",
"name": "x",
"scope": 9,
"scope": 10,
"stateVariable": false,
"storageLocation": "default",
"type": "uint8",
"type": "uint256",
"visibility": "internal"
},
"children": [],
"id": 3,
"children":
[
{
"attributes":
{
"name": "uint",
"type": "uint256"
},
"id": 3,
"name": "ElementaryTypeName",
"src": "28:4:1"
}
],
"id": 4,
"name": "VariableDeclaration",
"src": "28:5:1"
"src": "28:6:1"
},
{
"attributes":
@ -122,14 +134,14 @@
"type": "int_const 2",
"value": "2"
},
"id": 4,
"id": 5,
"name": "Literal",
"src": "36:1:1"
"src": "37:1:1"
}
],
"id": 5,
"id": 6,
"name": "VariableDeclarationStatement",
"src": "28:9:1"
"src": "28:10:1"
},
{
"children":
@ -143,7 +155,7 @@
"lValueRequested": false,
"operator": "++",
"prefix": false,
"type": "uint8"
"type": "uint256"
},
"children":
[
@ -154,41 +166,41 @@
[
null
],
"referencedDeclaration": 3,
"type": "uint8",
"referencedDeclaration": 4,
"type": "uint256",
"value": "x"
},
"id": 6,
"id": 7,
"name": "Identifier",
"src": "39:1:1"
"src": "40:1:1"
}
],
"id": 7,
"id": 8,
"name": "UnaryOperation",
"src": "39:3:1"
"src": "40:3:1"
}
],
"id": 8,
"id": 9,
"name": "ExpressionStatement",
"src": "39:3:1"
"src": "40:3:1"
}
],
"id": 9,
"id": 10,
"name": "Block",
"src": "26:19:1"
"src": "26:20:1"
}
],
"id": 10,
"id": 11,
"name": "FunctionDefinition",
"src": "13:32:1"
"src": "13:33:1"
}
],
"id": 11,
"id": 12,
"name": "ContractDefinition",
"src": "0:47:1"
"src": "0:48:1"
}
],
"id": 12,
"id": 13,
"name": "SourceUnit",
"src": "0:48:1"
"src": "0:49:1"
}

12
test/libsolidity/SolidityParser.cpp
View File

@ -253,7 +253,7 @@ BOOST_AUTO_TEST_CASE(natspec_comment_in_function_body)
contract test {
/// fun1 description
function fun1(uint256 a) {
var b;
uint b;
// I should not interfere with actual natspec comments (natspec comments on local variables not allowed anymore)
uint256 c;
mapping(address=>bytes32) d;
@ -285,7 +285,7 @@ BOOST_AUTO_TEST_CASE(natspec_docstring_between_keyword_and_signature)
uint256 stateVar;
function ///I am in the wrong place
fun1(uint256 a) {
var b;
uint b;
// I should not interfere with actual natspec comments (natspec comments on local variables not allowed anymore)
uint256 c;
mapping(address=>bytes32) d;
@ -311,7 +311,7 @@ BOOST_AUTO_TEST_CASE(natspec_docstring_after_signature)
uint256 stateVar;
function fun1(uint256 a) {
// I should have been above the function signature (natspec comments on local variables not allowed anymore)
var b;
uint b;
// I should not interfere with actual natspec comments (natspec comments on local variables not allowed anymore)
uint256 c;
mapping(address=>bytes32) d;
@ -334,7 +334,7 @@ BOOST_AUTO_TEST_CASE(variable_definition)
char const* text = R"(
contract test {
function fun(uint256 a) {
var b;
uint b;
uint256 c;
mapping(address=>bytes32) d;
customtype varname;
@ -349,7 +349,7 @@ BOOST_AUTO_TEST_CASE(variable_definition_with_initialization)
char const* text = R"(
contract test {
function fun(uint256 a) {
var b = 2;
uint b = 2;
uint256 c = 0x87;
mapping(address=>bytes32) d;
bytes7 name = "Solidity";
@ -403,7 +403,7 @@ BOOST_AUTO_TEST_CASE(type_conversion_to_dynamic_array)
char const* text = R"(
contract test {
function fun() {
var x = uint64[](3);
uint x = uint64[](3);
}
}
)";

4
test/libsolidity/syntaxTests/functionCalls/int_not_callable.sol
View File

@ -1,8 +1,8 @@
contract C
{
function f ( ) public {
var i = ( ( 1 ( 3 ) ) , 2 );
( ( 1 ( 3 ) ) , 2 );
}
}
// ----
// TypeError 5704: (61-68): Type is not callable
// TypeError 5704: (53-60): Type is not callable

2
test/libsolidity/syntaxTests/iceRegressionTests/memory_mapping_array.sol
View File

@ -4,4 +4,4 @@
}
}
// ----
// TypeError 6651: (91-136): Data location must be "storage" for variable, but "memory" was given.
// TypeError 4061: (91-136): Type mapping(string => uint24)[1] is only valid in storage because it contains a (nested) mapping.

9
test/libsolidity/syntaxTests/iceRegressionTests/oversized_var.sol
View File

@ -4,12 +4,11 @@ contract b {
}
c d;
function e() public {
var d = d;
function e() public view {
c storage x = d;
x.a[0];
}
}
// ----
// Warning 2519: (105-110): This declaration shadows an existing declaration.
// Warning 3408: (66-69): Variable "d" covers a large part of storage and thus makes collisions likely. Either use mappings or dynamic arrays and allow their size to be increased only in small quantities per transaction.
// Warning 2332: (105-110): Type "b.c" covers a large part of storage and thus makes collisions likely. Either use mappings or dynamic arrays and allow their size to be increased only in small quantities per transaction.
// SyntaxError 1719: (105-114): Use of the "var" keyword is disallowed. Use explicit declaration `struct b.c storage pointer d = ...´ instead.
// Warning 2332: (110-111): Type "b.c" covers a large part of storage and thus makes collisions likely. Either use mappings or dynamic arrays and allow their size to be increased only in small quantities per transaction.

2
test/libsolidity/syntaxTests/nameAndTypeResolution/207_no_mappings_in_memory_array.sol
View File

@ -4,4 +4,4 @@ contract C {
}
}
// ----
// TypeError 6651: (47-77): Data location must be "storage" for variable, but "memory" was given.
// TypeError 4061: (47-77): Type mapping(uint256 => uint256)[] is only valid in storage because it contains a (nested) mapping.

4
test/libsolidity/syntaxTests/nameAndTypeResolution/invalidArgs/creating_struct_members_skipped.sol
View File

@ -2,8 +2,8 @@ contract C {
struct S { uint a; uint b; mapping(uint=>uint) c; }
function f() public {
S memory s = S({a: 1});
S({a: 1});
}
}
// ----
// TypeError 9515: (117-126): Struct containing a (nested) mapping cannot be constructed.
// TypeError 9515: (104-113): Struct containing a (nested) mapping cannot be constructed.

2
test/libsolidity/syntaxTests/parsing/location_specifiers_with_var.sol
View File

@ -2,4 +2,4 @@ contract Foo {
function f() { var memory x; }
}
// ----
// ParserError 7439: (35-41): Location specifier needs explicit type name.
// ParserError 6933: (31-34): Expected primary expression.

2
test/libsolidity/syntaxTests/parsing/new_invalid_type_name.sol
View File

@ -4,4 +4,4 @@ contract C {
}
}
// ----
// ParserError 7059: (35-38): Expected explicit type name.
// ParserError 3546: (35-38): Expected type name

25
test/libsolidity/syntaxTests/parsing/return_var.sol
View File

@ -1,25 +0,0 @@
contract C {
function f() returns(var) {}
function f() returns(var x) {}
function f() returns(var x, uint y) {}
function f() returns(uint x, var y) {}
function f() returns(var x, var y) {}
function f() public pure returns (var storage) {}
function f() public pure returns (var storage x) {}
function f() public pure returns (var storage x, var storage y) {}
}
// ----
// ParserError 7059: (38-41): Expected explicit type name.
// ParserError 7059: (71-74): Expected explicit type name.
// ParserError 7059: (106-109): Expected explicit type name.
// ParserError 7059: (157-160): Expected explicit type name.
// ParserError 7059: (192-195): Expected explicit type name.
// ParserError 7059: (199-202): Expected explicit type name.
// ParserError 7059: (247-250): Expected explicit type name.
// ParserError 7439: (251-258): Location specifier needs explicit type name.
// ParserError 7059: (301-304): Expected explicit type name.
// ParserError 7439: (305-312): Location specifier needs explicit type name.
// ParserError 7059: (357-360): Expected explicit type name.
// ParserError 7439: (361-368): Location specifier needs explicit type name.
// ParserError 7059: (372-375): Expected explicit type name.
// ParserError 7439: (376-383): Location specifier needs explicit type name.

4
test/libsolidity/syntaxTests/parsing/tuples_without_commas.sol
View File

@ -1,7 +1,7 @@
contract C {
function f() {
var a = (2 2);
uint a = (2 2);
}
}
// ----
// ParserError 2314: (42-43): Expected ',' but got 'Number'
// ParserError 2314: (43-44): Expected ',' but got 'Number'

2
test/libsolidity/syntaxTests/parsing/var_array.sol
View File

@ -2,4 +2,4 @@ contract Foo {
function f() { var[] a; }
}
// ----
// ParserError 2314: (34-35): Expected identifier but got '['
// ParserError 6933: (31-34): Expected primary expression.

25
test/libsolidity/syntaxTests/parsing/var_in_function_arguments.sol
View File

@ -1,25 +0,0 @@
contract C {
function f(var) public pure {}
function f(var x) public pure {}
function f(var x, var y) public pure {}
function f(uint x, var y) public pure {}
function f(var x, uint y) public pure {}
function f(var storage) public pure {}
function f(var storage x) public pure {}
function f(var storage x, var storage y) public pure {}
}
// ----
// ParserError 7059: (28-31): Expected explicit type name.
// ParserError 7059: (63-66): Expected explicit type name.
// ParserError 7059: (100-103): Expected explicit type name.
// ParserError 7059: (107-110): Expected explicit type name.
// ParserError 7059: (152-155): Expected explicit type name.
// ParserError 7059: (189-192): Expected explicit type name.
// ParserError 7059: (234-237): Expected explicit type name.
// ParserError 7439: (238-245): Location specifier needs explicit type name.
// ParserError 7059: (277-280): Expected explicit type name.
// ParserError 7439: (281-288): Location specifier needs explicit type name.
// ParserError 7059: (322-325): Expected explicit type name.
// ParserError 7439: (326-333): Location specifier needs explicit type name.
// ParserError 7059: (337-340): Expected explicit type name.
// ParserError 7439: (341-348): Location specifier needs explicit type name.

7
test/libsolidity/syntaxTests/structs/struct_var_member.sol
View File

@ -1,7 +0,0 @@
contract C {
struct S {
var x;
}
}
// ----
// ParserError 7059: (27-30): Expected explicit type name.

2
test/libsolidity/syntaxTests/types/mapping/mapping_data_location_calldata.sol
View File

@ -6,4 +6,4 @@ contract c {
}
}
// ----
// TypeError 6651: (81-113): Data location must be "storage" for variable, but "calldata" was given.
// TypeError 4061: (81-113): Type mapping(uint256 => uint256) is only valid in storage because it contains a (nested) mapping.

2
test/libsolidity/syntaxTests/types/mapping/mapping_data_location_default.sol
View File

@ -6,4 +6,4 @@ contract c {
}
}
// ----
// TypeError 6651: (81-104): Data location must be "storage" for variable, but none was given.
// TypeError 6651: (81-104): Data location must be "storage", "memory" or "calldata" for variable, but none was given.

2
test/libsolidity/syntaxTests/types/mapping/mapping_data_location_memory.sol
View File

@ -6,4 +6,4 @@ contract c {
}
}
// ----
// TypeError 6651: (81-111): Data location must be "storage" for variable, but "memory" was given.
// TypeError 4061: (81-111): Type mapping(uint256 => uint256) is only valid in storage because it contains a (nested) mapping.

10
test/libsolidity/syntaxTests/types/unnamed_tuple_decl.sol
View File

@ -4,13 +4,11 @@ contract C {
function h() internal pure returns (uint, uint) { return (1, 2); }
function test() internal pure {
var () = f();
var () = g();
var (,) = h();
() = f();
() = g();
(,) = h();
}
}
// ----
// SyntaxError 3299: (223-235): The use of the "var" keyword is disallowed. The declaration part of the statement can be removed, since it is empty.
// SyntaxError 3299: (245-257): The use of the "var" keyword is disallowed. The declaration part of the statement can be removed, since it is empty.
// SyntaxError 3299: (267-280): The use of the "var" keyword is disallowed. The declaration part of the statement can be removed, since it is empty.
// ParserError 6933: (224-225): Expected primary expression.

9
test/libsolidity/syntaxTests/types/var_decl_val_mismatch.sol
View File

@ -3,13 +3,14 @@ contract n
fallback() external
{
// Used to cause a segfault
var (x,y) = (1);
var (z) = ();
(uint x, ) = (1);
(uint z) = ();
assembly {
mstore(y, z)
mstore(x, z)
}
}
}
// ----
// TypeError 7364: (69-84): Different number of components on the left hand side (2) than on the right hand side (1).
// TypeError 7364: (69-85): Different number of components on the left hand side (2) than on the right hand side (1).
// TypeError 7364: (89-102): Different number of components on the left hand side (1) than on the right hand side (0).

9
test/libsolidity/syntaxTests/types/var_empty_decl_0.sol
View File

@ -1,9 +0,0 @@
contract C {
function f() public pure {
var ();
var (,);
}
}
// ----
// SyntaxError 3299: (52-58): The use of the "var" keyword is disallowed. The declaration part of the statement can be removed, since it is empty.
// SyntaxError 3299: (68-75): The use of the "var" keyword is disallowed. The declaration part of the statement can be removed, since it is empty.

2
test/libsolidity/syntaxTests/types/var_empty_decl_1.sol
View File

@ -5,4 +5,4 @@ contract C {
}
}
// ----
// TypeError 6983: (52-57): Use of the "var" keyword is disallowed.
// ParserError 6933: (52-55): Expected primary expression.

2
test/libsolidity/syntaxTests/types/var_empty_decl_2.sol
View File

@ -6,4 +6,4 @@ contract C {
}
}
// ----
// TypeError 4626: (52-62): Use of the "var" keyword is disallowed.
// ParserError 6933: (52-55): Expected primary expression.

2
test/libsolidity/syntaxTests/types/var_empty_decl_3.sol
View File

@ -4,4 +4,4 @@ contract C {
}
}
// ----
// TypeError 4626: (52-63): Use of the "var" keyword is disallowed.
// ParserError 6933: (52-55): Expected primary expression.

6
test/libsolidity/syntaxTests/types/var_type_invalid_rational.sol
View File

@ -1,8 +1,8 @@
contract C {
function f() internal pure {
var i = 31415999999999999999999999999999999999999999999999999999999999999999933**3;
var unreachable = 123;
uint i = 31415999999999999999999999999999999999999999999999999999999999999999933**3;
uint unreachable = 123;
}
}
// ----
// TypeError 6963: (62-136): Invalid rational int_const 3100...(204 digits omitted)...9237 (absolute value too large or division by zero).
// TypeError 9574: (54-137): Type int_const 3100...(204 digits omitted)...9237 is not implicitly convertible to expected type uint256. Literal is too large to fit in uint256.

30
test/libsolidity/syntaxTests/types/var_type_suggest.sol
View File

@ -1,30 +0,0 @@
contract C {
function h() internal pure returns (uint, uint, uint) {
return (1, 2, 4);
}
function g(uint x) internal pure returns (uint) {
return x;
}
function f() internal pure {
var s = -31415;
var i = 31415;
var t = "string";
var g2 = g;
var myblockhash = block.blockhash;
var (a, b) = (2, "troi");
var (x,, z) = h();
var (c, d) = ("");
var (k, l) = (2);
var (m, n) = 1;
var (o, p) = "";
}
}
// ----
// SyntaxError 1719: (224-238): Use of the "var" keyword is disallowed. Use explicit declaration `int16 s = ...´ instead.
// SyntaxError 1719: (248-261): Use of the "var" keyword is disallowed. Use explicit declaration `uint16 i = ...´ instead.
// SyntaxError 1719: (271-287): Use of the "var" keyword is disallowed. Use explicit declaration `string memory t = ...´ instead.
// SyntaxError 1719: (297-307): Use of the "var" keyword is disallowed. Use explicit declaration `function (uint256) pure returns (uint256) g2 = ...´ instead.
// SyntaxError 3478: (317-350): Use of the "var" keyword is disallowed. Type cannot be expressed in syntax.
// SyntaxError 1719: (360-384): Use of the "var" keyword is disallowed. Use explicit declaration `(uint8 a, string memory b) = ...´ instead.
// SyntaxError 1719: (394-411): Use of the "var" keyword is disallowed. Use explicit declaration `(uint256 x, , uint256 z) = ...´ instead.
// TypeError 7364: (421-438): Different number of components on the left hand side (2) than on the right hand side (1).