118 lines
3.1 KiB
C++
118 lines
3.1 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 "cmWhileCommand.h"
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#include "cmIfCommand.h"
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bool cmWhileFunctionBlocker::
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IsFunctionBlocked(const cmListFileFunction& lff, cmMakefile &mf)
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{
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// Prevent recusion and don't let this blocker block its own
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// commands.
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if (this->Executing)
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{
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return false;
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}
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// at end of for each execute recorded commands
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if (cmSystemTools::LowerCase(lff.Name) == "while")
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{
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// record the number of while commands past this one
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this->Depth++;
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}
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else if (cmSystemTools::LowerCase(lff.Name) == "endwhile")
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{
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// if this is the endwhile for this while loop then execute
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if (!this->Depth)
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{
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char* errorString = 0;
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std::vector<std::string> expandedArguments;
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mf.ExpandArguments(this->Args, expandedArguments);
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bool isTrue =
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cmIfCommand::IsTrue(expandedArguments,&errorString,&mf);
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this->Executing = true;
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while (isTrue)
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{
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// Invoke all the functions that were collected in the block.
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for(unsigned int c = 0; c < this->Functions.size(); ++c)
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{
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mf.ExecuteCommand(this->Functions[c]);
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}
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expandedArguments.clear();
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mf.ExpandArguments(this->Args, expandedArguments);
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isTrue =
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cmIfCommand::IsTrue(expandedArguments,&errorString,&mf);
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}
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mf.RemoveFunctionBlocker(lff);
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return true;
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}
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else
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{
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// decrement for each nested while that ends
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this->Depth--;
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}
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}
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// record the command
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this->Functions.push_back(lff);
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// always return true
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return true;
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}
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bool cmWhileFunctionBlocker::
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ShouldRemove(const cmListFileFunction& lff, cmMakefile& mf)
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{
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if(cmSystemTools::LowerCase(lff.Name) == "endwhile")
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{
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if (lff.Arguments == this->Args
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|| mf.IsOn("CMAKE_ALLOW_LOOSE_LOOP_CONSTRUCTS"))
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{
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return true;
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}
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}
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return false;
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}
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void cmWhileFunctionBlocker::
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ScopeEnded(cmMakefile &mf)
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{
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cmSystemTools::Error(
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"The end of a CMakeLists file was reached with a WHILE statement that "
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"was not closed properly. Within the directory: ",
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mf.GetCurrentDirectory());
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}
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bool cmWhileCommand::InvokeInitialPass(
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const std::vector<cmListFileArgument>& args)
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{
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if(args.size() < 1)
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{
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this->SetError("called with incorrect number of arguments");
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return false;
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}
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// create a function blocker
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cmWhileFunctionBlocker *f = new cmWhileFunctionBlocker();
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f->Args = args;
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this->Makefile->AddFunctionBlocker(f);
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return true;
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}
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