CMake/Source/cmMacroCommand.cxx

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/*============================================================================
CMake - Cross Platform Makefile Generator
Copyright 2000-2009 Kitware, Inc., Insight Software Consortium
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Distributed under the OSI-approved BSD License (the "License");
see accompanying file Copyright.txt for details.
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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.
============================================================================*/
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#include "cmMacroCommand.h"
#include "cmake.h"
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#include "cmAlgorithms.h"
// define the class for macro commands
class cmMacroHelperCommand : public cmCommand
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{
public:
cmMacroHelperCommand() {}
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///! clean up any memory allocated by the macro
~cmMacroHelperCommand() {}
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/**
* 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.
*/
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virtual cmCommand* Clone()
{
cmMacroHelperCommand *newC = new cmMacroHelperCommand;
// we must copy when we clone
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newC->Args = this->Args;
newC->Functions = this->Functions;
newC->FilePath = this->FilePath;
newC->Policies = this->Policies;
return newC;
}
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/**
* 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; }
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/**
* The name of the command as specified in CMakeList.txt.
*/
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virtual std::string GetName() const { return this->Args[0]; }
cmTypeMacro(cmMacroHelperCommand, cmCommand);
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std::vector<std::string> Args;
std::vector<cmListFileFunction> Functions;
cmPolicies::PolicyMap Policies;
std::string FilePath;
};
bool cmMacroHelperCommand::InvokeInitialPass
(const std::vector<cmListFileArgument>& args,
cmExecutionStatus &inStatus)
{
// Expand the argument list to the macro.
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
// 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 =
"Macro invoked with incorrect arguments for macro named: ";
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errorMsg += this->Args[0];
this->SetError(errorMsg);
return false;
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}
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// Enforce matching logical blocks inside the macro.
cmMakefile::LexicalPushPop lexScope(this->Makefile);
// Push a weak policy scope which restores the policies recorded at
// macro creation.
cmMakefile::PolicyPushPop polScope(this->Makefile, true, this->Policies);
// set the value of argc
std::ostringstream argcDefStream;
argcDefStream << expandedArgs.size();
std::string argcDef = argcDefStream.str();
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std::vector<std::string>::const_iterator eit
= expandedArgs.begin() + (this->Args.size() - 1);
std::string expandedArgn = cmJoin(cmRange(eit, expandedArgs.end()), ";");
std::string expandedArgv = cmJoin(expandedArgs, ";");
std::vector<std::string> variables;
variables.reserve(this->Args.size() - 1);
for (unsigned int j = 1; j < this->Args.size(); ++j)
{
variables.push_back("${" + this->Args[j] + "}");
}
std::vector<std::string> argVs;
argVs.reserve(expandedArgs.size());
char argvName[60];
for (unsigned int j = 0; j < expandedArgs.size(); ++j)
{
sprintf(argvName,"${ARGV%i}",j);
argVs.push_back(argvName);
}
if(!this->Functions.empty())
{
this->FilePath = this->Functions[0].FilePath;
}
// Invoke all the functions that were collected in the block.
cmListFileFunction newLFF;
// for each function
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for(unsigned int c = 0; c < this->Functions.size(); ++c)
{
// Replace the formal arguments and then invoke the command.
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newLFF.Arguments.clear();
newLFF.Arguments.reserve(this->Functions[c].Arguments.size());
newLFF.Name = this->Functions[c].Name;
newLFF.FilePath = this->Functions[c].FilePath;
newLFF.Line = this->Functions[c].Line;
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// for each argument of the current function
for (std::vector<cmListFileArgument>::iterator k =
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this->Functions[c].Arguments.begin();
k != this->Functions[c].Arguments.end(); ++k)
{
// Set the FilePath on the arguments to match the function since it is
// not stored and the original values may be freed
k->FilePath = this->FilePath.c_str();
cmListFileArgument arg;
arg.Value = k->Value;
if(k->Delim != cmListFileArgument::Bracket)
{
// replace formal arguments
for (unsigned int j = 0; j < variables.size(); ++j)
{
cmSystemTools::ReplaceString(arg.Value, variables[j].c_str(),
expandedArgs[j].c_str());
}
// replace argc
cmSystemTools::ReplaceString(arg.Value, "${ARGC}",argcDef.c_str());
cmSystemTools::ReplaceString(arg.Value, "${ARGN}",
expandedArgn.c_str());
cmSystemTools::ReplaceString(arg.Value, "${ARGV}",
expandedArgv.c_str());
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// if the current argument of the current function has ${ARGV in it
// then try replacing ARGV values
if (arg.Value.find("${ARGV") != std::string::npos)
{
for (unsigned int t = 0; t < expandedArgs.size(); ++t)
{
cmSystemTools::ReplaceString(arg.Value, argVs[t].c_str(),
expandedArgs[t].c_str());
}
}
}
arg.Delim = k->Delim;
arg.FilePath = k->FilePath;
arg.Line = k->Line;
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newLFF.Arguments.push_back(arg);
}
cmExecutionStatus status;
if(!this->Makefile->ExecuteCommand(newLFF, status) ||
status.GetNestedError())
{
// The error message should have already included the call stack
// so we do not need to report an error here.
lexScope.Quiet();
polScope.Quiet();
inStatus.SetNestedError(true);
return false;
}
if (status.GetReturnInvoked())
{
inStatus.SetReturnInvoked(true);
return true;
}
if (status.GetBreakInvoked())
{
inStatus.SetBreakInvoked(true);
return true;
}
}
return true;
}
bool cmMacroFunctionBlocker::
IsFunctionBlocked(const cmListFileFunction& lff, cmMakefile &mf,
cmExecutionStatus &)
{
// record commands until we hit the ENDMACRO
// at the ENDMACRO call we shift gears and start looking for invocations
if(!cmSystemTools::Strucmp(lff.Name.c_str(),"macro"))
{
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this->Depth++;
}
else if(!cmSystemTools::Strucmp(lff.Name.c_str(),"endmacro"))
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{
// if this is the endmacro for this macro then execute
if (!this->Depth)
{
mf.AddMacro(this->Args[0].c_str());
// create a new command and add it to cmake
cmMacroHelperCommand *f = new cmMacroHelperCommand();
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f->Args = this->Args;
f->Functions = this->Functions;
mf.RecordPolicies(f->Policies);
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std::string newName = "_" + this->Args[0];
mf.GetCMakeInstance()->RenameCommand(this->Args[0],
newName);
mf.AddCommand(f);
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// remove the function blocker now that the macro is defined
mf.RemoveFunctionBlocker(this, lff);
return true;
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}
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else
{
// decrement for each nested macro that ends
this->Depth--;
}
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}
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// if it wasn't an endmacro and we are not executing then we must be
// recording
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this->Functions.push_back(lff);
return true;
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}
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bool cmMacroFunctionBlocker::
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ShouldRemove(const cmListFileFunction& lff, cmMakefile &mf)
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{
if(!cmSystemTools::Strucmp(lff.Name.c_str(),"endmacro"))
{
std::vector<std::string> expandedArguments;
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mf.ExpandArguments(lff.Arguments, expandedArguments);
// if the endmacro has arguments make sure they
// match the arguments of the macro
if ((expandedArguments.empty() ||
(expandedArguments[0] == this->Args[0])))
{
return true;
}
}
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return false;
}
bool cmMacroCommand::InitialPass(std::vector<std::string> const& args,
cmExecutionStatus &)
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{
if(args.size() < 1)
{
this->SetError("called with incorrect number of arguments");
return false;
}
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// create a function blocker
cmMacroFunctionBlocker *f = new cmMacroFunctionBlocker();
f->Args.insert(f->Args.end(), args.begin(), args.end());
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this->Makefile->AddFunctionBlocker(f);
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return true;
}