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/*=========================================================================
Program: CMake - Cross-Platform Makefile Generator
Module: $RCSfile$
Language: C++
Date: $Date$
Version: $Revision$
Copyright (c) 2002 Kitware, Inc., Insight Consortium. All rights reserved.
See Copyright.txt or http://www.cmake.org/HTML/Copyright.html for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notices for more information.
=========================================================================*/
#ifndef cmListFileCache_h
#define cmListFileCache_h
#include "cmStandardIncludes.h"
/** \class cmListFileCache
* \brief A class to cache list file contents.
*
* cmListFileCache is a class used to cache the contents of parsed
* cmake list files.
*/
struct cmListFileArgument
{
cmListFileArgument(): Value(), Quoted(false) {}
cmListFileArgument(const cmListFileArgument& r): Value(r.Value), Quoted(r.Quoted) {}
cmListFileArgument(const std::string& v, bool q): Value(v), Quoted(q) {}
bool operator == (const cmListFileArgument& r) const
{
return (this->Value == r.Value) && (this->Quoted == r.Quoted);
}
std::string Value;
bool Quoted;
};
struct cmListFileFunction
{
std::string m_Name;
std::vector<cmListFileArgument> m_Arguments;
std::string m_FilePath;
long m_Line;
};
struct cmListFile
{
cmListFile()
:m_ModifiedTime(0)
{
}
long int m_ModifiedTime;
std::vector<cmListFileFunction> m_Functions;
};
class cmListFileCache
{
public:
static cmListFileCache* GetInstance();
static void ClearCache();
/** Return the cached version of the given file.
* If the file is not already in the cache, a cache entry
* will be made. If there is an error loading the file,
* NULL is returned. If requireProjectCommand is true,
* then a PROJECT(Project) command will be added to the file
* if it does not have a PROJECT command in it.
*/
cmListFile* GetFileCache(const char* path, bool requireProjectCommand);
//! Flush cache file out of cache.
void FlushCache(const char* path);
/**
* Read a CMake command (or function) from an input file. This
* returns the name of the function and a list of its
* arguments. The last argument is the name of the file that
* the ifstream points to, and is used for debug info only.
*/
static bool ParseFunction(std::ifstream&, cmListFileFunction& function,
const char* filename, bool& parseError,
long* line = 0);
/**
* Extract white-space separated arguments from a string.
* Double quoted strings are accepted with spaces.
* This is called by ParseFunction.
*/
static void GetArguments(std::string& line,
std::vector<cmListFileArgument>& arguments);
private:
// Cache the file
bool CacheFile(const char* path, bool requireProjectCommand);
// private data
typedef std::map<cmStdString, cmListFile> ListFileMap;
ListFileMap m_ListFileCache; // file name to ListFile map
static cmListFileCache* Instance; // singelton pointer
};
#endif
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