124 lines
2.6 KiB
C++
124 lines
2.6 KiB
C++
/*=========================================================================
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Program: CMake - Cross-Platform Makefile Generator
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Module: $RCSfile$
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Language: C++
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Date: $Date$
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Version: $Revision$
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Copyright (c) 2002 Kitware, Inc., Insight Consortium. All rights reserved.
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See Copyright.txt or http://www.cmake.org/HTML/Copyright.html for details.
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This software is distributed WITHOUT ANY WARRANTY; without even
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the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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PURPOSE. See the above copyright notices for more information.
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=========================================================================*/
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#include "cmExprParserHelper.h"
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#include "cmSystemTools.h"
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#include "cmExprLexer.h"
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#include "cmMakefile.h"
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int cmExpr_yyparse( yyscan_t yyscanner );
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//
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cmExprParserHelper::cmExprParserHelper()
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{
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this->FileLine = -1;
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this->FileName = 0;
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}
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cmExprParserHelper::~cmExprParserHelper()
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{
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this->CleanupParser();
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}
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void cmExprParserHelper::SetLineFile(long line, const char* file)
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{
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this->FileLine = line;
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this->FileName = file;
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}
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int cmExprParserHelper::ParseString(const char* str, int verb)
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{
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if ( !str)
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{
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return 0;
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}
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//printf("Do some parsing: %s\n", str);
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this->Verbose = verb;
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this->InputBuffer = str;
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this->InputBufferPos = 0;
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this->CurrentLine = 0;
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this->Result = 0;
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yyscan_t yyscanner;
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cmExpr_yylex_init(&yyscanner);
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cmExpr_yyset_extra(this, yyscanner);
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int res = cmExpr_yyparse(yyscanner);
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cmExpr_yylex_destroy(yyscanner);
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if ( res != 0 )
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{
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//str << "CAL_Parser returned: " << res << std::endl;
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//std::cerr << "When parsing: [" << str << "]" << std::endl;
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return 0;
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}
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this->CleanupParser();
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if ( Verbose )
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{
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std::cerr << "Expanding [" << str << "] produced: ["
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<< this->Result << "]" << std::endl;
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}
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return 1;
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}
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void cmExprParserHelper::CleanupParser()
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{
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}
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int cmExprParserHelper::LexInput(char* buf, int maxlen)
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{
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//std::cout << "JPLexInput ";
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//std::cout.write(buf, maxlen);
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//std::cout << std::endl;
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if ( maxlen < 1 )
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{
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return 0;
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}
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if ( this->InputBufferPos < this->InputBuffer.size() )
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{
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buf[0] = this->InputBuffer[ this->InputBufferPos++ ];
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if ( buf[0] == '\n' )
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{
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this->CurrentLine ++;
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}
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return(1);
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}
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else
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{
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buf[0] = '\n';
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return( 0 );
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}
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}
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void cmExprParserHelper::Error(const char* str)
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{
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unsigned long pos = static_cast<unsigned long>(this->InputBufferPos);
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cmOStringStream ostr;
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ostr << str << " (" << pos << ")";
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this->ErrorString = ostr.str();
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}
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void cmExprParserHelper::SetResult(int value)
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{
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this->Result = value;
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}
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