mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
116 lines
3.0 KiB
C++
116 lines
3.0 KiB
C++
/*
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This file is part of solidity.
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solidity is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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solidity is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with solidity. If not, see <http://www.gnu.org/licenses/>.
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*/
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/**
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* @author Christian <c@ethdev.com>
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* @date 2016
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* Solidity parser shared functionality.
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*/
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#include <liblangutil/ParserBase.h>
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#include <liblangutil/Scanner.h>
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#include <liblangutil/ErrorReporter.h>
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using namespace std;
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using namespace dev;
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using namespace dev::solidity;
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std::shared_ptr<string const> const& ParserBase::sourceName() const
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{
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return m_scanner->sourceName();
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}
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int ParserBase::position() const
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{
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return m_scanner->currentLocation().start;
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}
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int ParserBase::endPosition() const
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{
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return m_scanner->currentLocation().end;
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}
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Token ParserBase::currentToken() const
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{
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return m_scanner->currentToken();
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}
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Token ParserBase::peekNextToken() const
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{
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return m_scanner->peekNextToken();
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}
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std::string ParserBase::currentLiteral() const
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{
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return m_scanner->currentLiteral();
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}
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Token ParserBase::advance()
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{
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return m_scanner->next();
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}
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void ParserBase::expectToken(Token _value, bool _advance)
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{
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Token tok = m_scanner->currentToken();
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if (tok != _value)
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{
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auto tokenName = [this](Token _token)
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{
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if (_token == Token::Identifier)
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return string("identifier");
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else if (_token == Token::EOS)
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return string("end of source");
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else if (TokenTraits::isReservedKeyword(_token))
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return string("reserved keyword '") + TokenTraits::friendlyName(_token) + "'";
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else if (TokenTraits::isElementaryTypeName(_token)) //for the sake of accuracy in reporting
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{
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ElementaryTypeNameToken elemTypeName = m_scanner->currentElementaryTypeNameToken();
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return string("'") + elemTypeName.toString() + "'";
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}
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else
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return string("'") + TokenTraits::friendlyName(_token) + "'";
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};
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fatalParserError(string("Expected ") + tokenName(_value) + string(" but got ") + tokenName(tok));
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}
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if (_advance)
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m_scanner->next();
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}
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void ParserBase::increaseRecursionDepth()
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{
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m_recursionDepth++;
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if (m_recursionDepth >= 2560)
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fatalParserError("Maximum recursion depth reached during parsing.");
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}
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void ParserBase::decreaseRecursionDepth()
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{
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solAssert(m_recursionDepth > 0, "");
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m_recursionDepth--;
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}
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void ParserBase::parserError(string const& _description)
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{
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m_errorReporter.parserError(SourceLocation(position(), endPosition(), sourceName()), _description);
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}
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void ParserBase::fatalParserError(string const& _description)
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{
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m_errorReporter.fatalParserError(SourceLocation(position(), endPosition(), sourceName()), _description);
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}
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