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Try to recover from parser errors where possible

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This commit is contained in:
Federico Bond 2017-06-15 21:12:04 -03:00
parent 54e97d1c34
commit 0eaae03bbf
1 changed files with 22 additions and 13 deletions
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35
libsolidity/parsing/Parser.cpp
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@ -347,8 +347,12 @@ Parser::FunctionHeaderParserResult Parser::parseFunctionHeader(bool _forceEmptyN
else if (Token::isVisibilitySpecifier(token))
{
if (result.visibility != Declaration::Visibility::Default)
fatalParserError(string("Multiple visibility specifiers."));
result.visibility = parseVisibilitySpecifier(token);
{
parserError(string("Multiple visibility specifiers."));
m_scanner->next();
}
else
result.visibility = parseVisibilitySpecifier(token);
}
else
break;
@ -501,8 +505,12 @@ ASTPointer<VariableDeclaration> Parser::parseVariableDeclaration(
if (_options.isStateVariable && Token::isVariableVisibilitySpecifier(token))
{
if (visibility != Declaration::Visibility::Default)
fatalParserError(string("Visibility already specified."));
visibility = parseVisibilitySpecifier(token);
{
parserError(string("Visibility already specified."));
m_scanner->next();
}
else
visibility = parseVisibilitySpecifier(token);
}
else
{
@ -513,14 +521,15 @@ ASTPointer<VariableDeclaration> Parser::parseVariableDeclaration(
else if (_options.allowLocationSpecifier && Token::isLocationSpecifier(token))
{
if (location != VariableDeclaration::Location::Default)
fatalParserError(string("Location already specified."));
if (!type)
fatalParserError(string("Location specifier needs explicit type name."));
location = (
token == Token::Memory ?
VariableDeclaration::Location::Memory :
VariableDeclaration::Location::Storage
);
parserError(string("Location already specified."));
else if (!type)
parserError(string("Location specifier needs explicit type name."));
else
location = (
token == Token::Memory ?
VariableDeclaration::Location::Memory :
VariableDeclaration::Location::Storage
);
}
else
break;
@ -702,7 +711,7 @@ ASTPointer<TypeName> Parser::parseTypeName(bool _allowVar)
else if (token == Token::Var)
{
if (!_allowVar)
fatalParserError(string("Expected explicit type name."));
parserError(string("Expected explicit type name."));
m_scanner->next();
}
else if (token == Token::Function)