solidity/libsolidity/analysis/SyntaxChecker.cpp
2016-01-19 03:24:58 +00:00

81 lines
2.0 KiB
C++

/*
This file is part of cpp-ethereum.
cpp-ethereum is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
cpp-ethereum is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
*/
#include <memory>
#include <libsolidity/ast/AST.h>
#include <libsolidity/analysis/SyntaxChecker.h>
using namespace std;
using namespace dev;
using namespace dev::solidity;
bool SyntaxChecker::checkSyntax(SourceUnit const& _sourceUnit)
{
_sourceUnit.accept(*this);
return m_errors.empty();
}
void SyntaxChecker::syntaxError(SourceLocation const& _location, std::string const& _description)
{
auto err = make_shared<Error>(Error::Type::SyntaxError);
*err <<
errinfo_sourceLocation(_location) <<
errinfo_comment(_description);
m_errors.push_back(err);
}
bool SyntaxChecker::visit(WhileStatement const&)
{
m_inLoopDepth++;
return true;
}
void SyntaxChecker::endVisit(WhileStatement const&)
{
m_inLoopDepth--;
}
bool SyntaxChecker::visit(ForStatement const&)
{
m_inLoopDepth++;
return true;
}
void SyntaxChecker::endVisit(ForStatement const&)
{
m_inLoopDepth--;
}
bool SyntaxChecker::visit(Continue const& _continueStatement)
{
if (m_inLoopDepth <= 0)
// we're not in a for/while loop, report syntax error
syntaxError(_continueStatement.location(), "\"continue\" has to be in a \"for\" or \"while\" loop.");
return true;
}
bool SyntaxChecker::visit(Break const& _breakStatement)
{
if (m_inLoopDepth <= 0)
// we're not in a for/while loop, report syntax error
syntaxError(_breakStatement.location(), "\"break\" has to be in a \"for\" or \"while\" loop.");
return true;
}