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// **********************************************************************
//
// Copyright (c) 2003
// ZeroC, Inc.
// Billerica, MA, USA
//
// All Rights Reserved.
//
// Ice is free software; you can redistribute it and/or modify it under
// the terms of the GNU General Public License version 2 as published by
// the Free Software Foundation.
//
// **********************************************************************
#include <Transform/Parser.h>
#include <Transform/GrammarUtil.h>
#include <IceUtil/Mutex.h>
using namespace std;
Transform::DataFactoryPtr Transform::parseDataFactory;
Transform::ErrorReporterPtr Transform::parseErrorReporter;
Transform::NodePtr Transform::parseResult;
int Transform::parseLine;
static string _input;
static string::size_type _pos;
static IceUtil::Mutex _parserMutex;
//
// Parser
//
Transform::NodePtr
Transform::Parser::parse(const string& expr, const DataFactoryPtr& factory, const ErrorReporterPtr& errorReporter)
{
//
// The bison grammar is not thread-safe.
//
IceUtil::Mutex::Lock sync(_parserMutex);
parseDataFactory = factory;
parseErrorReporter = errorReporter;
parseLine = 1;
parseErrorReporter->setExpression(expr);
_input = expr;
_pos = 0;
int status = transform_parse();
if(status != 0)
{
parseResult = 0;
}
parseErrorReporter->clearExpression();
parseErrorReporter = 0;
return parseResult;
}
int
Transform::getInput(char* buf, int maxSize)
{
if(_pos < _input.length())
{
buf[0] = _input[_pos];
_pos++;
return 1;
}
else
{
return 0;
}
}
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