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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 cmDependsC_h
#define cmDependsC_h
#include "cmDepends.h"
#include <cmsys/RegularExpression.hxx>
#include <queue>
/** \class cmDependsC
* \brief Dependency scanner for C and C++ object files.
*/
class cmDependsC : public cmDepends
{
public:
/** Checking instances need to know the build directory name and the
relative path from the build directory to the target file. */
cmDependsC();
cmDependsC(cmLocalGenerator* lg, const char* targetDir,
const std::string& lang,
const std::map<std::string, DependencyVector>* validDeps);
/** Virtual destructor to cleanup subclasses properly. */
virtual ~cmDependsC();
protected:
// Implement writing/checking methods required by superclass.
virtual bool WriteDependencies(const std::set<std::string>& sources,
const std::string& obj,
std::ostream& makeDepends,
std::ostream& internalDepends);
// Method to scan a single file.
void Scan(std::istream& is, const char* directory,
const std::string& fullName);
// Regular expression to identify C preprocessor include directives.
cmsys::RegularExpression IncludeRegexLine;
// Regular expressions to choose which include files to scan
// recursively and which to complain about not finding.
cmsys::RegularExpression IncludeRegexScan;
cmsys::RegularExpression IncludeRegexComplain;
std::string IncludeRegexLineString;
std::string IncludeRegexScanString;
std::string IncludeRegexComplainString;
// Regex to transform #include lines.
std::string IncludeRegexTransformString;
cmsys::RegularExpression IncludeRegexTransform;
typedef std::map<std::string, std::string> TransformRulesType;
TransformRulesType TransformRules;
void SetupTransforms();
void ParseTransform(std::string const& xform);
void TransformLine(std::string& line);
public:
// Data structures for dependency graph walk.
struct UnscannedEntry
{
std::string FileName;
std::string QuotedLocation;
};
struct cmIncludeLines
{
cmIncludeLines()
: Used(false)
{
}
std::vector<UnscannedEntry> UnscannedEntries;
bool Used;
};
protected:
const std::map<std::string, DependencyVector>* ValidDeps;
std::set<std::string> Encountered;
std::queue<UnscannedEntry> Unscanned;
std::map<std::string, cmIncludeLines*> FileCache;
std::map<std::string, std::string> HeaderLocationCache;
std::string CacheFileName;
void WriteCacheFile() const;
void ReadCacheFile();
private:
cmDependsC(cmDependsC const&); // Purposely not implemented.
void operator=(cmDependsC const&); // Purposely not implemented.
};
#endif
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