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//===- SectionMerger.h ----------------------------------------------------===//
//
// The MCLinker Project
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#ifndef MCLD_SECTION_MERGER_H
#define MCLD_SECTION_MERGER_H
#ifdef ENABLE_UNITTEST
#include <gtest.h>
#endif
#include <vector>
#include <string>
#include <llvm/MC/MCAssembler.h>
#include <mcld/LD/LDSection.h>
#include <mcld/LD/LDContext.h>
#include <mcld/LD/SectionMap.h>
namespace mcld
{
class MCLinker;
/** \class SectionMerger
* \brief maintain the mappings of substr of input section name to associated
* output section (data)
*/
class SectionMerger
{
public:
struct Mapping {
std::string inputSubStr;
LDSection* outputSection;
};
typedef std::vector<Mapping> LDSectionMapTy;
typedef LDSectionMapTy::iterator iterator;
typedef LDSectionMapTy::const_iterator const_iterator;
public:
SectionMerger(SectionMap& pSectionMap, LDContext& pContext);
~SectionMerger();
/// getOutputSectHdr - return a associated output section header
LDSection* getOutputSectHdr(const std::string& pName);
/// getOutputSectData - return a associated output section data
llvm::MCSectionData* getOutputSectData(const std::string& pName);
/// addMapping - add a mapping as creating one new output LDSection
/// @param pName - a input section name
/// @param pSection - the output LDSection*
bool addMapping(const std::string& pName, LDSection* pSection);
// ----- observers ----- //
bool empty() const
{ return m_LDSectionMap.empty(); }
size_t size() const
{ return m_LDSectionMap.size(); }
size_t capacity () const
{ return m_LDSectionMap.capacity(); }
// ----- iterators ----- //
iterator find(const std::string& pName);
iterator begin()
{ return m_LDSectionMap.begin(); }
iterator end()
{ return m_LDSectionMap.end(); }
const_iterator begin() const
{ return m_LDSectionMap.begin(); }
const_iterator end() const
{ return m_LDSectionMap.end(); }
private:
/// initOutputSectMap - initialize the map from input substr to associated
/// output LDSection*
void initOutputSectMap();
private:
SectionMap& m_SectionNameMap;
LDContext& m_Output;
LDSectionMapTy m_LDSectionMap;
};
} // namespace of mcld
#endif
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