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283 lines
8.2 KiB
283 lines
8.2 KiB
/*============================================================================
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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 "cmFunctionCommand.h"
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#include "cmake.h"
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// define the class for function commands
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class cmFunctionHelperCommand : public cmCommand
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{
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public:
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cmFunctionHelperCommand() {}
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///! clean up any memory allocated by the function
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~cmFunctionHelperCommand() {};
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/**
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* This is used to avoid including this command
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* in documentation. This is mainly used by
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* cmMacroHelperCommand and cmFunctionHelperCommand
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* which cannot provide appropriate documentation.
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*/
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virtual bool ShouldAppearInDocumentation() const
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{
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return false;
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}
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/**
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* This is a virtual constructor for the command.
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*/
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virtual cmCommand* Clone()
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{
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cmFunctionHelperCommand *newC = new cmFunctionHelperCommand;
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// we must copy when we clone
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newC->Args = this->Args;
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newC->Functions = this->Functions;
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newC->Policies = this->Policies;
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return newC;
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}
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/**
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* This determines if the command is invoked when in script mode.
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*/
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virtual bool IsScriptable() const { return true; }
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/**
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* This is called when the command is first encountered in
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* the CMakeLists.txt file.
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*/
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virtual bool InvokeInitialPass(const std::vector<cmListFileArgument>& args,
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cmExecutionStatus &);
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virtual bool InitialPass(std::vector<std::string> const&,
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cmExecutionStatus &) { return false; };
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/**
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* The name of the command as specified in CMakeList.txt.
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*/
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virtual const char* GetName() const { return this->Args[0].c_str(); }
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cmTypeMacro(cmFunctionHelperCommand, cmCommand);
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std::vector<std::string> Args;
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std::vector<cmListFileFunction> Functions;
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cmPolicies::PolicyMap Policies;
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};
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bool cmFunctionHelperCommand::InvokeInitialPass
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(const std::vector<cmListFileArgument>& args,
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cmExecutionStatus & inStatus)
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{
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// Expand the argument list to the function.
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std::vector<std::string> expandedArgs;
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this->Makefile->ExpandArguments(args, expandedArgs);
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// make sure the number of arguments passed is at least the number
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// required by the signature
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if (expandedArgs.size() < this->Args.size() - 1)
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{
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std::string errorMsg =
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"Function invoked with incorrect arguments for function named: ";
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errorMsg += this->Args[0];
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this->SetError(errorMsg.c_str());
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return false;
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}
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// we push a scope on the makefile
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cmMakefile::LexicalPushPop lexScope(this->Makefile);
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cmMakefile::ScopePushPop varScope(this->Makefile);
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static_cast<void>(varScope);
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// Push a weak policy scope which restores the policies recorded at
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// function creation.
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cmMakefile::PolicyPushPop polScope(this->Makefile, true, this->Policies);
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// set the value of argc
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cmOStringStream strStream;
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strStream << expandedArgs.size();
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this->Makefile->AddDefinition("ARGC",strStream.str().c_str());
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this->Makefile->MarkVariableAsUsed("ARGC");
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// set the values for ARGV0 ARGV1 ...
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for (unsigned int t = 0; t < expandedArgs.size(); ++t)
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{
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cmOStringStream tmpStream;
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tmpStream << "ARGV" << t;
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this->Makefile->AddDefinition(tmpStream.str().c_str(),
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expandedArgs[t].c_str());
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this->Makefile->MarkVariableAsUsed(tmpStream.str().c_str());
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}
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// define the formal arguments
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for (unsigned int j = 1; j < this->Args.size(); ++j)
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{
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this->Makefile->AddDefinition(this->Args[j].c_str(),
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expandedArgs[j-1].c_str());
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}
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// define ARGV and ARGN
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std::vector<std::string>::const_iterator eit;
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std::string argvDef;
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std::string argnDef;
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unsigned int cnt = 0;
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for ( eit = expandedArgs.begin(); eit != expandedArgs.end(); ++eit )
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{
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if ( argvDef.size() > 0 )
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{
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argvDef += ";";
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}
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argvDef += *eit;
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if ( cnt >= this->Args.size()-1 )
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{
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if ( argnDef.size() > 0 )
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{
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argnDef += ";";
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}
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argnDef += *eit;
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}
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cnt ++;
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}
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this->Makefile->AddDefinition("ARGV", argvDef.c_str());
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this->Makefile->MarkVariableAsUsed("ARGV");
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this->Makefile->AddDefinition("ARGN", argnDef.c_str());
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this->Makefile->MarkVariableAsUsed("ARGN");
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// Invoke all the functions that were collected in the block.
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// for each function
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for(unsigned int c = 0; c < this->Functions.size(); ++c)
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{
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cmExecutionStatus status;
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if (!this->Makefile->ExecuteCommand(this->Functions[c],status) ||
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status.GetNestedError())
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{
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// The error message should have already included the call stack
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// so we do not need to report an error here.
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lexScope.Quiet();
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polScope.Quiet();
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inStatus.SetNestedError(true);
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return false;
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}
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if (status.GetReturnInvoked())
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{
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return true;
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}
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}
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// pop scope on the makefile
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return true;
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}
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bool cmFunctionFunctionBlocker::
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IsFunctionBlocked(const cmListFileFunction& lff, cmMakefile &mf,
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cmExecutionStatus &)
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{
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// record commands until we hit the ENDFUNCTION
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// at the ENDFUNCTION call we shift gears and start looking for invocations
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if(!cmSystemTools::Strucmp(lff.Name.c_str(),"function"))
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{
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this->Depth++;
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}
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else if(!cmSystemTools::Strucmp(lff.Name.c_str(),"endfunction"))
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{
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// if this is the endfunction for this function then execute
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if (!this->Depth)
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{
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std::string name = this->Args[0];
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std::vector<std::string>::size_type cc;
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name += "(";
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for ( cc = 0; cc < this->Args.size(); cc ++ )
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{
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name += " " + this->Args[cc];
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}
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name += " )";
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// create a new command and add it to cmake
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cmFunctionHelperCommand *f = new cmFunctionHelperCommand();
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f->Args = this->Args;
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f->Functions = this->Functions;
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mf.RecordPolicies(f->Policies);
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// Set the FilePath on the arguments to match the function since it is
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// not stored and the original values may be freed
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for (unsigned int i = 0; i < f->Functions.size(); ++i)
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{
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for (unsigned int j = 0; j < f->Functions[i].Arguments.size(); ++j)
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{
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f->Functions[i].Arguments[j].FilePath =
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f->Functions[i].FilePath.c_str();
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}
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}
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std::string newName = "_" + this->Args[0];
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mf.GetCMakeInstance()->RenameCommand(this->Args[0].c_str(),
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newName.c_str());
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mf.AddCommand(f);
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// remove the function blocker now that the function is defined
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mf.RemoveFunctionBlocker(this, 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 function that ends
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this->Depth--;
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}
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}
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// if it wasn't an endfunction and we are not executing then we must be
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// recording
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this->Functions.push_back(lff);
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return true;
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}
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bool cmFunctionFunctionBlocker::
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ShouldRemove(const cmListFileFunction& lff, cmMakefile &mf)
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{
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if(!cmSystemTools::Strucmp(lff.Name.c_str(),"endfunction"))
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{
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std::vector<std::string> expandedArguments;
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mf.ExpandArguments(lff.Arguments, expandedArguments);
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// if the endfunction has arguments then make sure
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// they match the ones in the opening function command
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if ((expandedArguments.empty() ||
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(expandedArguments[0] == this->Args[0])))
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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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bool cmFunctionCommand
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::InitialPass(std::vector<std::string> const& args, cmExecutionStatus &)
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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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cmFunctionFunctionBlocker *f = new cmFunctionFunctionBlocker();
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for(std::vector<std::string>::const_iterator j = args.begin();
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j != args.end(); ++j)
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{
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f->Args.push_back(*j);
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}
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this->Makefile->AddFunctionBlocker(f);
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return true;
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}
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