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