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Parse override keyword

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This commit is contained in:
Mathias Baumann
2019-08-26 17:34:21 +02:00
parent 502bf01be2
commit 24716404f8
66 changed files with 1127 additions and 7 deletions
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libsolidity/parsing/Parser.cpp
+52 -3
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@@ -382,6 +382,36 @@ Declaration::Visibility Parser::parseVisibilitySpecifier()
return visibility;
}
ASTPointer<OverrideSpecifier> Parser::parseOverrideSpecifier()
{
solAssert(m_scanner->currentToken() == Token::Override, "");
ASTNodeFactory nodeFactory(*this);
std::vector<ASTPointer<UserDefinedTypeName>> overrides;
nodeFactory.markEndPosition();
m_scanner->next();
if (m_scanner->currentToken() == Token::LParen)
{
m_scanner->next();
while (true)
{
overrides.push_back(parseUserDefinedTypeName());
if (m_scanner->currentToken() == Token::RParen)
break;
expectToken(Token::Comma);
}
nodeFactory.markEndPosition();
expectToken(Token::RParen);
}
return nodeFactory.createNode<OverrideSpecifier>(move(overrides));
}
StateMutability Parser::parseStateMutability()
{
StateMutability stateMutability(StateMutability::NonPayable);
@@ -411,12 +441,13 @@ StateMutability Parser::parseStateMutability()
return stateMutability;
}
Parser::FunctionHeaderParserResult Parser::parseFunctionHeader(bool _forceEmptyName, bool _allowModifiers)
Parser::FunctionHeaderParserResult Parser::parseFunctionHeader(bool _onlyFuncType, bool _allowFuncDef)
{
RecursionGuard recursionGuard(*this);
FunctionHeaderParserResult result;
result.isConstructor = false;
result.overrides = nullptr;
if (m_scanner->currentToken() == Token::Constructor)
result.isConstructor = true;
@@ -426,7 +457,7 @@ Parser::FunctionHeaderParserResult Parser::parseFunctionHeader(bool _forceEmptyN
if (result.isConstructor)
result.name = make_shared<ASTString>();
else if (_forceEmptyName || m_scanner->currentToken() == Token::LParen)
else if (_onlyFuncType || m_scanner->currentToken() == Token::LParen)
result.name = make_shared<ASTString>();
else if (m_scanner->currentToken() == Token::Constructor)
fatalParserError(string(
@@ -443,7 +474,7 @@ Parser::FunctionHeaderParserResult Parser::parseFunctionHeader(bool _forceEmptyN
while (true)
{
Token token = m_scanner->currentToken();
if (_allowModifiers && token == Token::Identifier)
if (_allowFuncDef && token == Token::Identifier)
{
// If the name is empty (and this is not a constructor),
// then this can either be a modifier (fallback function declaration)
@@ -493,6 +524,13 @@ Parser::FunctionHeaderParserResult Parser::parseFunctionHeader(bool _forceEmptyN
else
result.stateMutability = parseStateMutability();
}
else if (_allowFuncDef && token == Token::Override)
{
if (result.overrides)
parserError("Override already specified.");
result.overrides = parseOverrideSpecifier();
}
else
break;
}
@@ -521,6 +559,7 @@ ASTPointer<ASTNode> Parser::parseFunctionDefinitionOrFunctionTypeStateVariable()
header.isConstructor ||
!header.modifiers.empty() ||
!header.name->empty() ||
header.overrides ||
m_scanner->currentToken() == Token::Semicolon ||
m_scanner->currentToken() == Token::LBrace
)
@@ -540,6 +579,7 @@ ASTPointer<ASTNode> Parser::parseFunctionDefinitionOrFunctionTypeStateVariable()
header.visibility,
header.stateMutability,
header.isConstructor,
header.overrides,
docstring,
header.parameters,
header.modifiers,
@@ -637,6 +677,7 @@ ASTPointer<VariableDeclaration> Parser::parseVariableDeclaration(
}
bool isIndexed = false;
bool isDeclaredConst = false;
ASTPointer<OverrideSpecifier> overrides = nullptr;
Declaration::Visibility visibility(Declaration::Visibility::Default);
VariableDeclaration::Location location = VariableDeclaration::Location::Unspecified;
ASTPointer<ASTString> identifier;
@@ -659,6 +700,13 @@ ASTPointer<VariableDeclaration> Parser::parseVariableDeclaration(
else
visibility = parseVisibilitySpecifier();
}
else if (_options.isStateVariable && token == Token::Override)
{
if (overrides)
parserError("Override already specified.");
overrides = parseOverrideSpecifier();
}
else
{
if (_options.allowIndexed && token == Token::Indexed)
@@ -724,6 +772,7 @@ ASTPointer<VariableDeclaration> Parser::parseVariableDeclaration(
_options.isStateVariable,
isIndexed,
isDeclaredConst,
overrides,
location
);
}