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/*============================================================================
CMake - Cross Platform Makefile Generator
Copyright 2000-2009 Kitware, Inc., Insight Software Consortium
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 "cmFunctionCommand.h"
#include "cmake.h"
// define the class for function commands
class cmFunctionHelperCommand : public cmCommand
{
public:
cmFunctionHelperCommand() {}
///! clean up any memory allocated by the function
~cmFunctionHelperCommand() {}
/**
* This is used to avoid including this command
* in documentation. This is mainly used by
* cmMacroHelperCommand and cmFunctionHelperCommand
* which cannot provide appropriate documentation.
*/
virtual bool ShouldAppearInDocumentation() const
{
return false;
}
/**
* This is a virtual constructor for the command.
*/
virtual cmCommand* Clone()
{
cmFunctionHelperCommand *newC = new cmFunctionHelperCommand;
// we must copy when we clone
newC->Args = this->Args;
newC->Functions = this->Functions;
newC->Policies = this->Policies;
newC->FilePath = this->FilePath;
return newC;
}
/**
* This determines if the command is invoked when in script mode.
*/
virtual bool IsScriptable() const { return true; }
/**
* This is called when the command is first encountered in
* the CMakeLists.txt file.
*/
virtual bool InvokeInitialPass(const std::vector<cmListFileArgument>& args,
cmExecutionStatus &);
virtual bool InitialPass(std::vector<std::string> const&,
cmExecutionStatus &) { return false; }
/**
* The name of the command as specified in CMakeList.txt.
*/
virtual std::string GetName() const { return this->Args[0]; }
cmTypeMacro(cmFunctionHelperCommand, cmCommand);
std::vector<std::string> Args;
std::vector<cmListFileFunction> Functions;
cmPolicies::PolicyMap Policies;
std::string FilePath;
};
bool cmFunctionHelperCommand::InvokeInitialPass
(const std::vector<cmListFileArgument>& args,
cmExecutionStatus & inStatus)
{
// Expand the argument list to the function.
std::vector<std::string> expandedArgs;
this->Makefile->ExpandArguments(args, expandedArgs);
// make sure the number of arguments passed is at least the number
// required by the signature
if (expandedArgs.size() < this->Args.size() - 1)
{
std::string errorMsg =
"Function invoked with incorrect arguments for function named: ";
errorMsg += this->Args[0];
this->SetError(errorMsg);
return false;
}
cmMakefile::FunctionPushPop functionScope(this->Makefile,
this->FilePath,
this->Policies);
// set the value of argc
std::ostringstream strStream;
strStream << expandedArgs.size();
this->Makefile->AddDefinition("ARGC",strStream.str().c_str());
this->Makefile->MarkVariableAsUsed("ARGC");
// set the values for ARGV0 ARGV1 ...
for (unsigned int t = 0; t < expandedArgs.size(); ++t)
{
std::ostringstream tmpStream;
tmpStream << "ARGV" << t;
this->Makefile->AddDefinition(tmpStream.str(),
expandedArgs[t].c_str());
this->Makefile->MarkVariableAsUsed(tmpStream.str());
}
// define the formal arguments
for (unsigned int j = 1; j < this->Args.size(); ++j)
{
this->Makefile->AddDefinition(this->Args[j],
expandedArgs[j-1].c_str());
}
// define ARGV and ARGN
std::string argvDef = cmJoin(expandedArgs, ";");
std::vector<std::string>::const_iterator eit
= expandedArgs.begin() + (this->Args.size()-1);
std::string argnDef = cmJoin(cmRange(eit, expandedArgs.end()), ";");
this->Makefile->AddDefinition("ARGV", argvDef.c_str());
this->Makefile->MarkVariableAsUsed("ARGV");
this->Makefile->AddDefinition("ARGN", argnDef.c_str());
this->Makefile->MarkVariableAsUsed("ARGN");
// Invoke all the functions that were collected in the block.
// for each function
for(unsigned int c = 0; c < this->Functions.size(); ++c)
{
cmExecutionStatus status;
if (!this->Makefile->ExecuteCommand(this->Functions[c],status) ||
status.GetNestedError())
{
// The error message should have already included the call stack
// so we do not need to report an error here.
functionScope.Quiet();
inStatus.SetNestedError(true);
return false;
}
if (status.GetReturnInvoked())
{
return true;
}
}
// pop scope on the makefile
return true;
}
bool cmFunctionFunctionBlocker::
IsFunctionBlocked(const cmListFileFunction& lff, cmMakefile &mf,
cmExecutionStatus &)
{
// record commands until we hit the ENDFUNCTION
// at the ENDFUNCTION call we shift gears and start looking for invocations
if(!cmSystemTools::Strucmp(lff.Name.c_str(),"function"))
{
this->Depth++;
}
else if(!cmSystemTools::Strucmp(lff.Name.c_str(),"endfunction"))
{
// if this is the endfunction for this function then execute
if (!this->Depth)
{
// create a new command and add it to cmake
cmFunctionHelperCommand *f = new cmFunctionHelperCommand();
f->Args = this->Args;
f->Functions = this->Functions;
f->FilePath = this->GetStartingContext().FilePath;
mf.RecordPolicies(f->Policies);
std::string newName = "_" + this->Args[0];
mf.GetState()->RenameCommand(this->Args[0], newName);
mf.GetState()->AddCommand(f);
// remove the function blocker now that the function is defined
mf.RemoveFunctionBlocker(this, lff);
return true;
}
else
{
// decrement for each nested function that ends
this->Depth--;
}
}
// if it wasn't an endfunction and we are not executing then we must be
// recording
this->Functions.push_back(lff);
return true;
}
bool cmFunctionFunctionBlocker::
ShouldRemove(const cmListFileFunction& lff, cmMakefile &mf)
{
if(!cmSystemTools::Strucmp(lff.Name.c_str(),"endfunction"))
{
std::vector<std::string> expandedArguments;
mf.ExpandArguments(lff.Arguments, expandedArguments,
this->GetStartingContext().FilePath.c_str());
// if the endfunction has arguments then make sure
// they match the ones in the opening function command
if ((expandedArguments.empty() ||
(expandedArguments[0] == this->Args[0])))
{
return true;
}
}
return false;
}
bool cmFunctionCommand
::InitialPass(std::vector<std::string> const& args, cmExecutionStatus &)
{
if(args.size() < 1)
{
this->SetError("called with incorrect number of arguments");
return false;
}
// create a function blocker
cmFunctionFunctionBlocker *f = new cmFunctionFunctionBlocker();
f->Args.insert(f->Args.end(), args.begin(), args.end());
this->Makefile->AddFunctionBlocker(f);
return true;
}
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