315 lines
9.5 KiB
C++
315 lines
9.5 KiB
C++
/*============================================================================
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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 "cmListFileCache.h"
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#include "cmListFileLexer.h"
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#include "cmSystemTools.h"
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#include "cmMakefile.h"
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#include "cmVersion.h"
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#include <cmsys/RegularExpression.hxx>
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#ifdef __BORLANDC__
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# pragma warn -8060 /* possibly incorrect assignment */
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#endif
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bool cmListFileCacheParseFunction(cmListFileLexer* lexer,
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cmListFileFunction& function,
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const char* filename);
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bool cmListFile::ParseFile(const char* filename,
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bool topLevel,
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cmMakefile *mf)
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{
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if(!cmSystemTools::FileExists(filename))
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{
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return false;
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}
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// Create the scanner.
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cmListFileLexer* lexer = cmListFileLexer_New();
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if(!lexer)
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{
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cmSystemTools::Error("cmListFileCache: error allocating lexer ");
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return false;
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}
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// Open the file.
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if(!cmListFileLexer_SetFileName(lexer, filename))
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{
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cmListFileLexer_Delete(lexer);
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cmSystemTools::Error("cmListFileCache: error can not open file ",
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filename);
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return false;
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}
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// Use a simple recursive-descent parser to process the token
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// stream.
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this->ModifiedTime = cmSystemTools::ModifiedTime(filename);
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bool parseError = false;
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bool haveNewline = true;
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cmListFileLexer_Token* token;
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while(!parseError && (token = cmListFileLexer_Scan(lexer)))
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{
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if(token->type == cmListFileLexer_Token_Newline)
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{
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haveNewline = true;
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}
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else if(token->type == cmListFileLexer_Token_Identifier)
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{
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if(haveNewline)
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{
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haveNewline = false;
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cmListFileFunction inFunction;
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inFunction.Name = token->text;
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inFunction.FilePath = filename;
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inFunction.Line = token->line;
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if(cmListFileCacheParseFunction(lexer, inFunction, filename))
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{
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this->Functions.push_back(inFunction);
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}
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else
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{
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parseError = true;
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}
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}
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else
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{
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cmOStringStream error;
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error << "Error in cmake code at\n"
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<< filename << ":" << token->line << ":\n"
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<< "Parse error. Expected a newline, got "
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<< cmListFileLexer_GetTypeAsString(lexer, token->type)
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<< " with text \"" << token->text << "\".";
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cmSystemTools::Error(error.str().c_str());
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parseError = true;
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}
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}
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else
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{
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cmOStringStream error;
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error << "Error in cmake code at\n"
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<< filename << ":" << token->line << ":\n"
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<< "Parse error. Expected a command name, got "
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<< cmListFileLexer_GetTypeAsString(lexer, token->type)
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<< " with text \""
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<< token->text << "\".";
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cmSystemTools::Error(error.str().c_str());
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parseError = true;
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}
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}
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if (parseError)
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{
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this->ModifiedTime = 0;
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}
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cmListFileLexer_Delete(lexer);
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// do we need a cmake_policy(VERSION call?
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if(topLevel)
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{
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bool hasVersion = false;
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// search for the right policy command
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for(std::vector<cmListFileFunction>::iterator i
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= this->Functions.begin();
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i != this->Functions.end(); ++i)
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{
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if (cmSystemTools::LowerCase(i->Name) == "cmake_minimum_required")
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{
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hasVersion = true;
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break;
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}
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}
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// if no policy command is found this is an error if they use any
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// non advanced functions or a lot of functions
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if(!hasVersion)
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{
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bool isProblem = true;
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if (this->Functions.size() < 30)
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{
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// the list of simple commands DO NOT ADD TO THIS LIST!!!!!
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// these commands must have backwards compatibility forever and
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// and that is a lot longer than your tiny mind can comprehend mortal
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std::set<std::string> allowedCommands;
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allowedCommands.insert("project");
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allowedCommands.insert("set");
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allowedCommands.insert("if");
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allowedCommands.insert("endif");
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allowedCommands.insert("else");
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allowedCommands.insert("elseif");
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allowedCommands.insert("add_executable");
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allowedCommands.insert("add_library");
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allowedCommands.insert("target_link_libraries");
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allowedCommands.insert("option");
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allowedCommands.insert("message");
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isProblem = false;
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for(std::vector<cmListFileFunction>::iterator i
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= this->Functions.begin();
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i != this->Functions.end(); ++i)
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{
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std::string name = cmSystemTools::LowerCase(i->Name);
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if (allowedCommands.find(name) == allowedCommands.end())
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{
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isProblem = true;
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break;
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}
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}
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}
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if (isProblem)
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{
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// Tell the top level cmMakefile to diagnose
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// this violation of CMP0000.
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mf->SetCheckCMP0000(true);
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// Implicitly set the version for the user.
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mf->SetPolicyVersion("2.4");
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}
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}
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}
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if(topLevel)
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{
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bool hasProject = false;
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// search for a project command
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for(std::vector<cmListFileFunction>::iterator i
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= this->Functions.begin();
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i != this->Functions.end(); ++i)
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{
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if(cmSystemTools::LowerCase(i->Name) == "project")
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{
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hasProject = true;
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break;
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}
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}
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// if no project command is found, add one
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if(!hasProject)
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{
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cmListFileFunction project;
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project.Name = "PROJECT";
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cmListFileArgument prj("Project", false, filename, 0);
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project.Arguments.push_back(prj);
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this->Functions.insert(this->Functions.begin(),project);
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}
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}
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if(parseError)
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{
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return false;
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}
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return true;
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}
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bool cmListFileCacheParseFunction(cmListFileLexer* lexer,
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cmListFileFunction& function,
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const char* filename)
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{
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// Command name has already been parsed. Read the left paren.
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cmListFileLexer_Token* token;
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if(!(token = cmListFileLexer_Scan(lexer)))
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{
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cmOStringStream error;
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error << "Error in cmake code at\n"
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<< filename << ":" << cmListFileLexer_GetCurrentLine(lexer) << ":\n"
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<< "Parse error. Function missing opening \"(\".";
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cmSystemTools::Error(error.str().c_str());
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return false;
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}
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if(token->type != cmListFileLexer_Token_ParenLeft)
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{
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cmOStringStream error;
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error << "Error in cmake code at\n"
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<< filename << ":" << cmListFileLexer_GetCurrentLine(lexer) << ":\n"
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<< "Parse error. Expected \"(\", got "
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<< cmListFileLexer_GetTypeAsString(lexer, token->type)
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<< " with text \"" << token->text << "\".";
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cmSystemTools::Error(error.str().c_str());
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return false;
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}
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// Arguments.
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unsigned long lastLine = cmListFileLexer_GetCurrentLine(lexer);
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unsigned long parenDepth = 0;
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while((token = cmListFileLexer_Scan(lexer)))
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{
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if(token->type == cmListFileLexer_Token_ParenLeft)
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{
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parenDepth++;
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cmListFileArgument a("(",
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false, filename, token->line);
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function.Arguments.push_back(a);
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}
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else if(token->type == cmListFileLexer_Token_ParenRight)
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{
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if (parenDepth == 0)
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{
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return true;
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}
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parenDepth--;
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cmListFileArgument a(")",
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false, filename, token->line);
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function.Arguments.push_back(a);
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}
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else if(token->type == cmListFileLexer_Token_Identifier ||
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token->type == cmListFileLexer_Token_ArgumentUnquoted)
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{
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cmListFileArgument a(token->text,
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false, filename, token->line);
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function.Arguments.push_back(a);
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}
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else if(token->type == cmListFileLexer_Token_ArgumentQuoted)
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{
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cmListFileArgument a(token->text,
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true, filename, token->line);
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function.Arguments.push_back(a);
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}
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else if(token->type != cmListFileLexer_Token_Newline)
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{
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// Error.
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cmOStringStream error;
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error << "Error in cmake code at\n"
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<< filename << ":" << cmListFileLexer_GetCurrentLine(lexer)
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<< ":\n"
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<< "Parse error. Function missing ending \")\". "
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<< "Instead found "
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<< cmListFileLexer_GetTypeAsString(lexer, token->type)
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<< " with text \"" << token->text << "\".";
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cmSystemTools::Error(error.str().c_str());
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return false;
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}
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lastLine = cmListFileLexer_GetCurrentLine(lexer);
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}
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cmOStringStream error;
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error << "Error in cmake code at\n"
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<< filename << ":" << lastLine << ":\n"
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<< "Parse error. Function missing ending \")\". "
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<< "End of file reached.";
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cmSystemTools::Error(error.str().c_str());
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return false;
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}
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//----------------------------------------------------------------------------
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std::ostream& operator<<(std::ostream& os, cmListFileContext const& lfc)
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{
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os << lfc.FilePath;
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if(lfc.Line)
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{
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os << ":" << lfc.Line;
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if(!lfc.Name.empty())
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{
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os << " (" << lfc.Name << ")";
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}
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}
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return os;
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}
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