424 lines
13 KiB
C++
424 lines
13 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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//----------------------------------------------------------------------------
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struct cmListFileParser
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{
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cmListFileParser(cmListFile* lf, cmMakefile* mf, const char* filename);
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~cmListFileParser();
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bool ParseFile();
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bool ParseFunction(const char* name, long line);
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bool AddArgument(cmListFileLexer_Token* token,
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cmListFileArgument::Delimiter delim);
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cmListFile* ListFile;
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cmMakefile* Makefile;
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const char* FileName;
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cmListFileLexer* Lexer;
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cmListFileFunction Function;
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enum { SeparationOkay, SeparationWarning, SeparationError} Separation;
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};
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//----------------------------------------------------------------------------
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cmListFileParser::cmListFileParser(cmListFile* lf, cmMakefile* mf,
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const char* filename):
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ListFile(lf), Makefile(mf), FileName(filename),
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Lexer(cmListFileLexer_New())
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{
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}
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//----------------------------------------------------------------------------
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cmListFileParser::~cmListFileParser()
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{
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cmListFileLexer_Delete(this->Lexer);
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}
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//----------------------------------------------------------------------------
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bool cmListFileParser::ParseFile()
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{
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// Open the file.
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cmListFileLexer_BOM bom;
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if(!cmListFileLexer_SetFileName(this->Lexer, this->FileName, &bom))
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{
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cmSystemTools::Error("cmListFileCache: error can not open file ",
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this->FileName);
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return false;
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}
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// Verify the Byte-Order-Mark, if any.
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if(bom != cmListFileLexer_BOM_None &&
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bom != cmListFileLexer_BOM_UTF8)
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{
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cmListFileLexer_SetFileName(this->Lexer, 0, 0);
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cmOStringStream m;
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m << "File\n " << this->FileName << "\n"
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<< "starts with a Byte-Order-Mark that is not UTF-8.";
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this->Makefile->IssueMessage(cmake::FATAL_ERROR, m.str());
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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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bool haveNewline = true;
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while(cmListFileLexer_Token* token =
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cmListFileLexer_Scan(this->Lexer))
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{
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if(token->type == cmListFileLexer_Token_Space)
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{
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}
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else 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_CommentBracket)
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{
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haveNewline = false;
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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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if(this->ParseFunction(token->text, token->line))
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{
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this->ListFile->Functions.push_back(this->Function);
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}
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else
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{
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return false;
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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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<< this->FileName << ":" << token->line << ":\n"
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<< "Parse error. Expected a newline, got "
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<< cmListFileLexer_GetTypeAsString(this->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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}
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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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<< this->FileName << ":" << token->line << ":\n"
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<< "Parse error. Expected a command name, got "
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<< cmListFileLexer_GetTypeAsString(this->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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return false;
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}
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}
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return true;
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}
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//----------------------------------------------------------------------------
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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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bool parseError = false;
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this->ModifiedTime = cmSystemTools::ModifiedTime(filename);
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{
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cmListFileParser parser(this, mf, filename);
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parseError = !parser.ParseFile();
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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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// 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", cmListFileArgument::Unquoted,
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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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//----------------------------------------------------------------------------
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bool cmListFileParser::ParseFunction(const char* name, long line)
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{
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// Inintialize a new function call.
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this->Function = cmListFileFunction();
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this->Function.FilePath = this->FileName;
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this->Function.Name = name;
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this->Function.Line = line;
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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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while((token = cmListFileLexer_Scan(this->Lexer)) &&
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token->type == cmListFileLexer_Token_Space) {}
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if(!token)
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{
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cmOStringStream error;
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error << "Error in cmake code at\n" << this->FileName << ":"
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<< cmListFileLexer_GetCurrentLine(this->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" << this->FileName << ":"
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<< cmListFileLexer_GetCurrentLine(this->Lexer) << ":\n"
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<< "Parse error. Expected \"(\", got "
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<< cmListFileLexer_GetTypeAsString(this->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;
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unsigned long parenDepth = 0;
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this->Separation = SeparationOkay;
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while((lastLine = cmListFileLexer_GetCurrentLine(this->Lexer),
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token = cmListFileLexer_Scan(this->Lexer)))
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{
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if(token->type == cmListFileLexer_Token_Space ||
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token->type == cmListFileLexer_Token_Newline)
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{
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this->Separation = SeparationOkay;
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continue;
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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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this->Separation = SeparationOkay;
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if(!this->AddArgument(token, cmListFileArgument::Unquoted))
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{
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return false;
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}
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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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this->Separation = SeparationOkay;
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if(!this->AddArgument(token, cmListFileArgument::Unquoted))
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{
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return false;
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}
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this->Separation = SeparationWarning;
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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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if(!this->AddArgument(token, cmListFileArgument::Unquoted))
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{
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return false;
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}
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this->Separation = SeparationWarning;
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}
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else if(token->type == cmListFileLexer_Token_ArgumentQuoted)
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{
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if(!this->AddArgument(token, cmListFileArgument::Quoted))
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{
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return false;
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}
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this->Separation = SeparationWarning;
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}
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else if(token->type == cmListFileLexer_Token_ArgumentBracket)
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{
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if(!this->AddArgument(token, cmListFileArgument::Bracket))
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{
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return false;
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}
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this->Separation = SeparationError;
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}
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else if(token->type == cmListFileLexer_Token_CommentBracket)
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{
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this->Separation = SeparationError;
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}
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else
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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" << this->FileName << ":"
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<< cmListFileLexer_GetCurrentLine(this->Lexer) << ":\n"
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<< "Parse error. Function missing ending \")\". "
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<< "Instead found "
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<< cmListFileLexer_GetTypeAsString(this->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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}
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cmOStringStream error;
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error << "Error in cmake code at\n"
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<< this->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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bool cmListFileParser::AddArgument(cmListFileLexer_Token* token,
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cmListFileArgument::Delimiter delim)
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{
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cmListFileArgument a(token->text, delim, this->FileName, token->line);
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this->Function.Arguments.push_back(a);
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if(this->Separation == SeparationOkay)
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{
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return true;
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}
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bool isError = (this->Separation == SeparationError ||
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delim == cmListFileArgument::Bracket);
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cmOStringStream m;
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m << "Syntax " << (isError? "Error":"Warning") << " in cmake code at\n"
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<< " " << this->FileName << ":" << token->line << ":"
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<< token->column << "\n"
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<< "Argument not separated from preceding token by whitespace.";
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if(isError)
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{
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this->Makefile->IssueMessage(cmake::FATAL_ERROR, m.str().c_str());
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return false;
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}
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else
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{
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this->Makefile->IssueMessage(cmake::AUTHOR_WARNING, m.str().c_str());
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return true;
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}
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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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