115 lines
3.4 KiB
C++
115 lines
3.4 KiB
C++
/*============================================================================
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CMake - Cross Platform Makefile Generator
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Copyright 2000-2009 Kitware, Inc., Insight Software Consortium
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Distributed under the OSI-approved BSD License (the "License");
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see accompanying file Copyright.txt for details.
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This software is distributed WITHOUT ANY WARRANTY; without even the
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implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the License for more information.
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============================================================================*/
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#include "cmGeneratorExpression.h"
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#include "cmMakefile.h"
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#include "cmTarget.h"
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#include <cmsys/String.h>
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#include "cmGeneratorExpressionEvaluator.h"
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#include "cmGeneratorExpressionLexer.h"
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#include "cmGeneratorExpressionParser.h"
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//----------------------------------------------------------------------------
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cmGeneratorExpression::cmGeneratorExpression(
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cmMakefile* mf, const char* config,
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cmListFileBacktrace const& backtrace, bool quiet):
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Makefile(mf), Config(config), Backtrace(backtrace), Quiet(quiet),
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NeedsParsing(true)
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{
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}
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//----------------------------------------------------------------------------
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const char* cmGeneratorExpression::Process(std::string const& input)
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{
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return this->Process(input.c_str());
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}
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//----------------------------------------------------------------------------
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const char* cmGeneratorExpression::Process(const char* input)
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{
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this->Parse(input);
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return this->Evaluate(this->Makefile, this->Config, this->Quiet);
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}
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//----------------------------------------------------------------------------
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void cmGeneratorExpression::Parse(const char* input)
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{
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this->Evaluators.clear();
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this->Input = input;
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cmGeneratorExpressionLexer l;
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std::vector<cmGeneratorExpressionToken> tokens = l.Tokenize(this->Input);
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this->NeedsParsing = l.GetSawGeneratorExpression();
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if (!this->NeedsParsing)
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{
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return;
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}
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cmGeneratorExpressionParser p(tokens);
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p.Parse(this->Evaluators);
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}
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//----------------------------------------------------------------------------
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const char *cmGeneratorExpression::Evaluate(
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cmMakefile* mf, const char* config, bool quiet)
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{
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if (!this->NeedsParsing)
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{
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return this->Input;
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}
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this->Output = "";
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std::vector<cmGeneratorExpressionEvaluator*>::const_iterator it
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= this->Evaluators.begin();
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const std::vector<cmGeneratorExpressionEvaluator*>::const_iterator end
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= this->Evaluators.end();
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cmGeneratorExpressionContext context;
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context.Makefile = mf;
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context.Config = config;
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context.Quiet = quiet;
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context.HadError = false;
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context.Backtrace = this->Backtrace;
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for ( ; it != end; ++it)
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{
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this->Output += (*it)->Evaluate(&context);
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if (context.HadError)
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{
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this->Output = "";
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break;
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}
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}
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this->Targets = context.Targets;
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// TODO: Return a std::string from here instead?
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return this->Output.c_str();
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}
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//----------------------------------------------------------------------------
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cmGeneratorExpression::~cmGeneratorExpression()
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{
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std::vector<cmGeneratorExpressionEvaluator*>::const_iterator it
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= this->Evaluators.begin();
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const std::vector<cmGeneratorExpressionEvaluator*>::const_iterator end
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= this->Evaluators.end();
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for ( ; it != end; ++it)
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{
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delete *it;
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}
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}
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