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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 "cmCMakePolicyCommand.h"
#include "cmVersion.h"
// cmCMakePolicyCommand
bool cmCMakePolicyCommand
::InitialPass(std::vector<std::string> const& args, cmExecutionStatus &)
{
if(args.size() < 1)
{
this->SetError("requires at least one argument.");
return false;
}
if(args[0] == "SET")
{
return this->HandleSetMode(args);
}
else if(args[0] == "GET")
{
return this->HandleGetMode(args);
}
else if(args[0] == "PUSH")
{
if(args.size() > 1)
{
this->SetError("PUSH may not be given additional arguments.");
return false;
}
this->Makefile->PushPolicy();
return true;
}
else if(args[0] == "POP")
{
if(args.size() > 1)
{
this->SetError("POP may not be given additional arguments.");
return false;
}
this->Makefile->PopPolicy();
return true;
}
else if(args[0] == "VERSION")
{
return this->HandleVersionMode(args);
}
std::ostringstream e;
e << "given unknown first argument \"" << args[0] << "\"";
this->SetError(e.str());
return false;
}
//----------------------------------------------------------------------------
bool cmCMakePolicyCommand::HandleSetMode(std::vector<std::string> const& args)
{
if(args.size() != 3)
{
this->SetError("SET must be given exactly 2 additional arguments.");
return false;
}
cmPolicies::PolicyStatus status;
if(args[2] == "OLD")
{
status = cmPolicies::OLD;
}
else if(args[2] == "NEW")
{
status = cmPolicies::NEW;
}
else
{
std::ostringstream e;
e << "SET given unrecognized policy status \"" << args[2] << "\"";
this->SetError(e.str());
return false;
}
if(!this->Makefile->SetPolicy(args[1].c_str(), status))
{
this->SetError("SET failed to set policy.");
return false;
}
return true;
}
//----------------------------------------------------------------------------
bool cmCMakePolicyCommand::HandleGetMode(std::vector<std::string> const& args)
{
if(args.size() != 3)
{
this->SetError("GET must be given exactly 2 additional arguments.");
return false;
}
// Get arguments.
std::string const& id = args[1];
std::string const& var = args[2];
// Lookup the policy number.
cmPolicies::PolicyID pid;
if(!this->Makefile->GetPolicies()->GetPolicyID(id.c_str(), pid))
{
std::ostringstream e;
e << "GET given policy \"" << id << "\" which is not known to this "
<< "version of CMake.";
this->SetError(e.str());
return false;
}
// Lookup the policy setting.
cmPolicies::PolicyStatus status = this->Makefile->GetPolicyStatus(pid);
switch (status)
{
case cmPolicies::OLD:
// Report that the policy is set to OLD.
this->Makefile->AddDefinition(var, "OLD");
break;
case cmPolicies::WARN:
// Report that the policy is not set.
this->Makefile->AddDefinition(var, "");
break;
case cmPolicies::NEW:
// Report that the policy is set to NEW.
this->Makefile->AddDefinition(var, "NEW");
break;
case cmPolicies::REQUIRED_IF_USED:
case cmPolicies::REQUIRED_ALWAYS:
// The policy is required to be set before anything needs it.
{
std::ostringstream e;
e << this->Makefile->GetPolicies()->GetRequiredPolicyError(pid)
<< "\n"
<< "The call to cmake_policy(GET " << id << " ...) at which this "
<< "error appears requests the policy, and this version of CMake "
<< "requires that the policy be set to NEW before it is checked.";
this->Makefile->IssueMessage(cmake::FATAL_ERROR, e.str());
}
}
return true;
}
//----------------------------------------------------------------------------
bool
cmCMakePolicyCommand::HandleVersionMode(std::vector<std::string> const& args)
{
if(args.size() <= 1)
{
this->SetError("VERSION not given an argument");
return false;
}
else if(args.size() >= 3)
{
this->SetError("VERSION given too many arguments");
return false;
}
this->Makefile->SetPolicyVersion(args[1].c_str());
return true;
}
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