CMakeLua/Source/cmCMakePolicyCommand.cxx

   1 /*=========================================================================
   2
   3   Program:   CMake - Cross-Platform Makefile Generator
   4   Module:    $RCSfile: cmCMakePolicyCommand.cxx,v $
   5   Language:  C++
   6   Date:      $Date: 2008-03-05 23:21:09 $
   7   Version:   $Revision: 1.2 $
   8
   9   Copyright (c) 2002 Kitware, Inc., Insight Consortium.  All rights reserved.
  10   See Copyright.txt or http://www.cmake.org/HTML/Copyright.html for details.
  11
  12      This software is distributed WITHOUT ANY WARRANTY; without even
  13      the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
  14      PURPOSE.  See the above copyright notices for more information.
  15
  16 =========================================================================*/
  17 #include "cmCMakePolicyCommand.h"
  18
  19 #include "cmVersion.h"
  20
  21 // cmCMakePolicyCommand
  22 bool cmCMakePolicyCommand
  23 ::InitialPass(std::vector<std::string> const& args, cmExecutionStatus &)
  24 {
  25   if(args.size() < 1)
  26     {
  27     this->SetError("requires at least one argument.");
  28     return false;
  29     }
  30
  31   if(args[0] == "SET")
  32     {
  33     return this->HandleSetMode(args);
  34     }
  35   else if(args[0] == "PUSH")
  36     {
  37     if(args.size() > 1)
  38       {
  39       this->SetError("PUSH may not be given additional arguments.");
  40       return false;
  41       }
  42     return this->Makefile->PushPolicy();
  43     }
  44   else if(args[0] == "POP")
  45     {
  46     if(args.size() > 1)
  47       {
  48       this->SetError("POP may not be given additional arguments.");
  49       return false;
  50       }
  51     if(this->Makefile->PopPolicy(false))
  52       {
  53       return true;
  54       }
  55     else
  56       {
  57       this->SetError("POP without matching PUSH");
  58       return false;
  59       }
  60     }
  61   else if(args[0] == "VERSION")
  62     {
  63     return this->HandleVersionMode(args);
  64     }
  65
  66   cmOStringStream e;
  67   e << "given unknown first argument \"" << args[0] << "\"";
  68   this->SetError(e.str().c_str());
  69   return false;
  70 }
  71
  72 //----------------------------------------------------------------------------
  73 bool cmCMakePolicyCommand::HandleSetMode(std::vector<std::string> const& args)
  74 {
  75   if(args.size() != 3)
  76     {
  77     this->SetError("SET must be given exactly 2 additional arguments.");
  78     return false;
  79     }
  80
  81   cmPolicies::PolicyStatus status;
  82   if(args[2] == "OLD")
  83     {
  84     status = cmPolicies::OLD;
  85     }
  86   else if(args[2] == "NEW")
  87     {
  88     status = cmPolicies::NEW;
  89     }
  90   else
  91     {
  92     cmOStringStream e;
  93     e << "SET given unrecognized policy status \"" << args[2] << "\"";
  94     this->SetError(e.str().c_str());
  95     return false;
  96     }
  97
  98   if(!this->Makefile->SetPolicy(args[1].c_str(), status))
  99     {
 100     this->SetError("SET failed to set policy.");
 101     return false;
 102     }
 103   return true;
 104 }
 105
 106 //----------------------------------------------------------------------------
 107 bool
 108 cmCMakePolicyCommand::HandleVersionMode(std::vector<std::string> const& args)
 109 {
 110   if(args.size() <= 1)
 111     {
 112     this->SetError("VERSION not given an argument");
 113     return false;
 114     }
 115   else if(args.size() >= 3)
 116     {
 117     this->SetError("VERSION given too many arguments");
 118     return false;
 119     }
 120   if(!this->Makefile->SetPolicyVersion(args[1].c_str()))
 121     {
 122     cmOStringStream e;
 123     e << "VERSION given invalid value \"" << args[1] << "\".  "
 124       << "A numeric major.minor[.patch] must be given.";
 125     this->SetError(e.str().c_str());
 126     return false;
 127     }
 128   return true;
 129 }