57072c12d2
8dfdf1c Fix the tests for evaluating includes and defines. 98a6725 Fix constness of accessors. 7e70744 Expand includes and defines transitively in 'external' genexes. d1a2729 Fix DAG checker finding cycling dependencies. e72eaad Workaround broken code where a target has itself in its link iface. ec2c67b Strip stray semicolons when evaluating generator expressions.
392 lines
11 KiB
C++
392 lines
11 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 "assert.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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#include "cmGeneratorExpressionDAGChecker.h"
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//----------------------------------------------------------------------------
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cmGeneratorExpression::cmGeneratorExpression(
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cmListFileBacktrace const& backtrace):
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Backtrace(backtrace)
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{
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}
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//----------------------------------------------------------------------------
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cmsys::auto_ptr<cmCompiledGeneratorExpression>
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cmGeneratorExpression::Parse(std::string const& input)
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{
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return this->Parse(input.c_str());
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}
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//----------------------------------------------------------------------------
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cmsys::auto_ptr<cmCompiledGeneratorExpression>
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cmGeneratorExpression::Parse(const char* input)
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{
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return cmsys::auto_ptr<cmCompiledGeneratorExpression>(
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new cmCompiledGeneratorExpression(
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this->Backtrace,
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input));
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}
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cmGeneratorExpression::~cmGeneratorExpression()
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{
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}
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//----------------------------------------------------------------------------
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const char *cmCompiledGeneratorExpression::Evaluate(
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cmMakefile* mf, const char* config, bool quiet,
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cmTarget *headTarget,
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cmGeneratorExpressionDAGChecker *dagChecker) const
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{
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return this->Evaluate(mf,
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config,
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quiet,
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headTarget,
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headTarget,
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dagChecker);
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}
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//----------------------------------------------------------------------------
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const char *cmCompiledGeneratorExpression::Evaluate(
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cmMakefile* mf, const char* config, bool quiet,
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cmTarget *headTarget,
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cmTarget *currentTarget,
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cmGeneratorExpressionDAGChecker *dagChecker) const
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{
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if (!this->NeedsParsing)
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{
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return this->Input.c_str();
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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.HadContextSensitiveCondition = false;
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context.HeadTarget = headTarget;
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context.CurrentTarget = currentTarget ? currentTarget : headTarget;
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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, dagChecker);
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for(std::set<cmStdString>::const_iterator
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p = context.SeenTargetProperties.begin();
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p != context.SeenTargetProperties.end(); ++p)
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{
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this->SeenTargetProperties.insert(*p);
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}
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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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if (!context.HadError)
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{
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this->HadContextSensitiveCondition = context.HadContextSensitiveCondition;
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}
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this->DependTargets = context.DependTargets;
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this->AllTargetsSeen = context.AllTargets;
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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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cmCompiledGeneratorExpression::cmCompiledGeneratorExpression(
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cmListFileBacktrace const& backtrace,
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const char *input)
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: Backtrace(backtrace), Input(input ? input : ""),
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HadContextSensitiveCondition(false)
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{
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cmGeneratorExpressionLexer l;
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std::vector<cmGeneratorExpressionToken> tokens =
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l.Tokenize(this->Input.c_str());
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this->NeedsParsing = l.GetSawGeneratorExpression();
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if (this->NeedsParsing)
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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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//----------------------------------------------------------------------------
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cmCompiledGeneratorExpression::~cmCompiledGeneratorExpression()
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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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//----------------------------------------------------------------------------
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std::string cmGeneratorExpression::StripEmptyListElements(
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const std::string &input)
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{
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std::string result;
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const char *c = input.c_str();
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bool skipSemiColons = true;
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for ( ; *c; ++c)
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{
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if(c[0] == ';')
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{
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if(skipSemiColons)
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{
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continue;
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}
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skipSemiColons = true;
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}
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else
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{
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skipSemiColons = false;
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}
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result += *c;
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}
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if (!result.empty() && *(result.end() - 1) == ';')
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{
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result.resize(result.size() - 1);
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}
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return result;
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}
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//----------------------------------------------------------------------------
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static std::string stripAllGeneratorExpressions(const std::string &input)
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{
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std::string result;
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std::string::size_type pos = 0;
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std::string::size_type lastPos = pos;
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while((pos = input.find("$<", lastPos)) != input.npos)
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{
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result += input.substr(lastPos, pos - lastPos);
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pos += 2;
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int nestingLevel = 1;
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const char *c = input.c_str() + pos;
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const char * const cStart = c;
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for ( ; *c; ++c)
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{
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if(c[0] == '$' && c[1] == '<')
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{
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++nestingLevel;
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++c;
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continue;
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}
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if(c[0] == '>')
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{
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--nestingLevel;
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if (nestingLevel == 0)
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{
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break;
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}
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}
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}
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const std::string::size_type traversed = (c - cStart) + 1;
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if (!*c)
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{
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result += "$<" + input.substr(pos, traversed);
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}
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pos += traversed;
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lastPos = pos;
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}
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result += input.substr(lastPos);
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return cmGeneratorExpression::StripEmptyListElements(result);
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}
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//----------------------------------------------------------------------------
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static std::string stripExportInterface(const std::string &input,
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cmGeneratorExpression::PreprocessContext context)
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{
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std::string result;
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std::string::size_type pos = 0;
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std::string::size_type lastPos = pos;
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while((pos = input.find("$<BUILD_INTERFACE:", lastPos)) != input.npos
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|| (pos = input.find("$<INSTALL_INTERFACE:", lastPos)) != input.npos)
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{
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result += input.substr(lastPos, pos - lastPos);
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const bool gotInstallInterface = input[pos + 2] == 'I';
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pos += gotInstallInterface ? sizeof("$<INSTALL_INTERFACE:") - 1
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: sizeof("$<BUILD_INTERFACE:") - 1;
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int nestingLevel = 1;
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const char *c = input.c_str() + pos;
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const char * const cStart = c;
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for ( ; *c; ++c)
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{
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if(c[0] == '$' && c[1] == '<')
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{
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++nestingLevel;
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++c;
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continue;
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}
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if(c[0] == '>')
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{
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--nestingLevel;
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if (nestingLevel != 0)
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{
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continue;
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}
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if(context == cmGeneratorExpression::BuildInterface
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&& !gotInstallInterface)
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{
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result += input.substr(pos, c - cStart);
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}
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else if(context == cmGeneratorExpression::InstallInterface
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&& gotInstallInterface)
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{
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result += input.substr(pos, c - cStart);
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}
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break;
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}
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}
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const std::string::size_type traversed = (c - cStart) + 1;
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if (!*c)
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{
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result += std::string(gotInstallInterface ? "$<INSTALL_INTERFACE:"
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: "$<BUILD_INTERFACE:")
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+ input.substr(pos, traversed);
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}
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pos += traversed;
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lastPos = pos;
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}
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result += input.substr(lastPos);
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return cmGeneratorExpression::StripEmptyListElements(result);
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}
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//----------------------------------------------------------------------------
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void cmGeneratorExpression::Split(const std::string &input,
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std::vector<std::string> &output)
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{
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std::string::size_type pos = 0;
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std::string::size_type lastPos = pos;
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while((pos = input.find("$<", lastPos)) != input.npos)
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{
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std::string part = input.substr(lastPos, pos - lastPos);
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std::string preGenex;
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if (!part.empty())
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{
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std::string::size_type startPos = input.rfind(";", pos);
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if (startPos != pos - 1 && startPos >= lastPos)
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{
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part = input.substr(lastPos, startPos - lastPos);
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preGenex = input.substr(startPos + 1, pos - startPos - 1);
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}
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cmSystemTools::ExpandListArgument(part.c_str(), output);
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}
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pos += 2;
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int nestingLevel = 1;
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const char *c = input.c_str() + pos;
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const char * const cStart = c;
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for ( ; *c; ++c)
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{
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if(c[0] == '$' && c[1] == '<')
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{
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++nestingLevel;
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++c;
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continue;
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}
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if(c[0] == '>')
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{
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--nestingLevel;
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if (nestingLevel == 0)
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{
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break;
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}
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}
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}
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for ( ; *c; ++c)
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{
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// Capture the part after the genex and before the next ';'
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if(c[0] == ';')
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{
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--c;
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break;
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}
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}
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const std::string::size_type traversed = (c - cStart) + 1;
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output.push_back(preGenex + "$<" + input.substr(pos, traversed));
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pos += traversed;
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lastPos = pos;
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}
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if (lastPos < input.size())
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{
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cmSystemTools::ExpandListArgument(input.substr(lastPos), output);
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}
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}
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//----------------------------------------------------------------------------
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std::string cmGeneratorExpression::Preprocess(const std::string &input,
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PreprocessContext context)
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{
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if (context == StripAllGeneratorExpressions)
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{
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return stripAllGeneratorExpressions(input);
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}
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else if (context == BuildInterface || context == InstallInterface)
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{
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return stripExportInterface(input, context);
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}
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assert(!"cmGeneratorExpression::Preprocess called with invalid args");
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return std::string();
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}
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//----------------------------------------------------------------------------
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std::string::size_type cmGeneratorExpression::Find(const std::string &input)
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{
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const std::string::size_type openpos = input.find("$<");
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if (openpos != std::string::npos
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&& input.find(">", openpos) != std::string::npos)
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{
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return openpos;
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}
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return std::string::npos;
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}
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//----------------------------------------------------------------------------
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bool cmGeneratorExpression::IsValidTargetName(const std::string &input)
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{
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cmsys::RegularExpression targetNameValidator;
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// The ':' is supported to allow use with IMPORTED targets. At least
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// Qt 4 and 5 IMPORTED targets use ':' as the namespace delimiter.
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targetNameValidator.compile("^[A-Za-z0-9_.:-]+$");
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return targetNameValidator.find(input.c_str());
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}
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