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/*============================================================================
CMake - Cross Platform Makefile Generator
Copyright 2000-2009 Kitware, Inc., Insight Software Consortium
Distributed under the OSI-approved BSD License (the "License");
see accompanying file Copyright.txt for details.
This software is distributed WITHOUT ANY WARRANTY; without even the
implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the License for more information.
============================================================================*/
#include "cmExprParserHelper.h"
#include "cmSystemTools.h"
#include "cmMakefile.h"
#include "cmExprLexer.h"
int cmExpr_yyparse( yyscan_t yyscanner );
//
cmExprParserHelper::cmExprParserHelper()
{
this->FileLine = -1;
this->FileName = 0;
}
cmExprParserHelper::~cmExprParserHelper()
{
this->CleanupParser();
}
int cmExprParserHelper::ParseString(const char* str, int verb)
{
if ( !str)
{
return 0;
}
//printf("Do some parsing: %s\n", str);
this->Verbose = verb;
this->InputBuffer = str;
this->InputBufferPos = 0;
this->CurrentLine = 0;
this->Result = 0;
yyscan_t yyscanner;
cmExpr_yylex_init(&yyscanner);
cmExpr_yyset_extra(this, yyscanner);
int res = cmExpr_yyparse(yyscanner);
cmExpr_yylex_destroy(yyscanner);
if ( res != 0 )
{
//str << "CAL_Parser returned: " << res << std::endl;
//std::cerr << "When parsing: [" << str << "]" << std::endl;
return 0;
}
this->CleanupParser();
if ( Verbose )
{
std::cerr << "Expanding [" << str << "] produced: ["
<< this->Result << "]" << std::endl;
}
return 1;
}
void cmExprParserHelper::CleanupParser()
{
}
int cmExprParserHelper::LexInput(char* buf, int maxlen)
{
//std::cout << "JPLexInput ";
//std::cout.write(buf, maxlen);
//std::cout << std::endl;
if ( maxlen < 1 )
{
return 0;
}
if ( this->InputBufferPos < this->InputBuffer.size() )
{
buf[0] = this->InputBuffer[ this->InputBufferPos++ ];
if ( buf[0] == '\n' )
{
this->CurrentLine ++;
}
return(1);
}
else
{
buf[0] = '\n';
return( 0 );
}
}
void cmExprParserHelper::Error(const char* str)
{
unsigned long pos = static_cast<unsigned long>(this->InputBufferPos);
std::ostringstream ostr;
ostr << str << " (" << pos << ")";
this->ErrorString = ostr.str();
}
void cmExprParserHelper::SetResult(int value)
{
this->Result = value;
}
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