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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.
============================================================================*/
#ifndef cmSourceFileLocation_h
#define cmSourceFileLocation_h
#include "cmStandardIncludes.h"
class cmMakefile;
/** \class cmSourceFileLocation
* \brief cmSourceFileLocation tracks knowledge about a source file location
*
* Source files can be referenced by a variety of names. The
* directory and/or extension may be omitted leading to a certain
* level of ambiguity about the source file location. This class is
* used by cmSourceFile to keep track of what is known about the
* source file location. Each reference may add some information
* about the directory or extension of the file.
*/
class cmSourceFileLocation
{
public:
/**
* Construct for a source file created in a given cmMakefile
* instance with an initial name.
*/
cmSourceFileLocation(cmMakefile const* mf, const std::string& name);
/**
* Return whether the givne source file location could refers to the
* same source file as this location given the level of ambiguity in
* each location.
*/
bool Matches(cmSourceFileLocation const& loc);
/**
* Explicity state that the source file is located in the source tree.
*/
void DirectoryUseSource();
/**
* Explicity state that the source file is located in the build tree.
*/
void DirectoryUseBinary();
/**
* Return whether the directory containing the source is ambiguous.
*/
bool DirectoryIsAmbiguous() const { return this->AmbiguousDirectory; }
/**
* Return whether the extension of the source name is ambiguous.
*/
bool ExtensionIsAmbiguous() const { return this->AmbiguousExtension; }
/**
* Get the directory containing the file as best is currently known.
* If DirectoryIsAmbiguous() returns false this will be a full path.
* Otherwise it will be a relative path (possibly empty) that is
* either with respect to the source or build tree.
*/
const char* GetDirectory() const { return this->Directory.c_str(); }
/**
* Get the file name as best is currently known. If
* ExtensionIsAmbiguous() returns true this name may not be the
* final name (but could be). Otherwise the returned name is the
* final name.
*/
const std::string& GetName() const { return this->Name; }
/**
* Get the cmMakefile instance for which the source file was created.
*/
cmMakefile const* GetMakefile() const { return this->Makefile; }
private:
cmMakefile const* Makefile;
bool AmbiguousDirectory;
bool AmbiguousExtension;
std::string Directory;
std::string Name;
bool MatchesAmbiguousExtension(cmSourceFileLocation const& loc) const;
// Update the location with additional knowledge.
void Update(cmSourceFileLocation const& loc);
void Update(const std::string& name);
void UpdateExtension(const std::string& name);
void UpdateDirectory(const std::string& name);
};
#endif
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