107 lines
3.1 KiB
C++
107 lines
3.1 KiB
C++
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/*============================================================================
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CMake - Cross Platform Makefile Generator
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Copyright 2012 Stephen Kelly <steveire@gmail.com>
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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 "cmGeneratorExpressionDAGChecker.h"
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#include "cmMakefile.h"
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//----------------------------------------------------------------------------
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cmGeneratorExpressionDAGChecker::cmGeneratorExpressionDAGChecker(
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const cmListFileBacktrace &backtrace,
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const std::string &target,
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const std::string &property,
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const GeneratorExpressionContent *content,
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cmGeneratorExpressionDAGChecker *parent)
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: Parent(parent), Target(target), Property(property),
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Content(content), Backtrace(backtrace)
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{
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this->IsDAG = this->isDAG();
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}
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//----------------------------------------------------------------------------
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bool cmGeneratorExpressionDAGChecker::check() const
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{
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return this->IsDAG;
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}
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//----------------------------------------------------------------------------
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void cmGeneratorExpressionDAGChecker::reportError(
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cmGeneratorExpressionContext *context,
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const std::string &expr)
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{
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if (this->IsDAG)
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{
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return;
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}
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context->HadError = true;
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if (context->Quiet)
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{
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return;
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}
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const cmGeneratorExpressionDAGChecker *parent = this->Parent;
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if (parent && !parent->Parent)
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{
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cmOStringStream e;
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e << "Error evaluating generator expression:\n"
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<< " " << expr << "\n"
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<< "Self reference on target \""
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<< context->Target->GetName() << "\".\n";
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context->Makefile->GetCMakeInstance()
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->IssueMessage(cmake::FATAL_ERROR, e.str().c_str(),
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parent->Backtrace);
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return;
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}
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{
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cmOStringStream e;
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e << "Error evaluating generator expression:\n"
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<< " " << expr << "\n"
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<< "Dependency loop found.";
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context->Makefile->GetCMakeInstance()
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->IssueMessage(cmake::FATAL_ERROR, e.str().c_str(),
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context->Backtrace);
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}
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int loopStep = 1;
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while (parent)
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{
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cmOStringStream e;
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e << "Loop step " << loopStep << "\n"
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<< " "
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<< (parent->Content ? parent->Content->GetOriginalExpression() : expr)
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<< "\n";
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context->Makefile->GetCMakeInstance()
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->IssueMessage(cmake::FATAL_ERROR, e.str().c_str(),
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parent->Backtrace);
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parent = parent->Parent;
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++loopStep;
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}
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}
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//----------------------------------------------------------------------------
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bool cmGeneratorExpressionDAGChecker::isDAG() const
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{
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const cmGeneratorExpressionDAGChecker *parent = this->Parent;
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while (parent)
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{
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if (this->Target == parent->Target && this->Property == parent->Property)
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{
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return false;
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}
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parent = parent->Parent;
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}
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return true;
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}
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