63 lines
1.9 KiB
C
63 lines
1.9 KiB
C
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//===- MergedStringTable.h ------------------------------------------------===//
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//
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// The MCLinker Project
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#ifndef MCLD_LD_MERGEDSTRINGTABLE_H_
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#define MCLD_LD_MERGEDSTRINGTABLE_H_
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#include "mcld/Support/MemoryRegion.h"
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#include <llvm/ADT/StringMap.h>
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#include <llvm/ADT/StringRef.h>
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namespace mcld {
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/** \class MergedStringTable
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* \brief MergedStringTable represents the mergeable string table. The sections
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* with flag SHF_MERGED and SHF_STRING are mergeable. Every string in
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* MergedStringTable is unique.
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*/
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class MergedStringTable {
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public:
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typedef llvm::StringMap<size_t> StringMapTy;
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public:
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MergedStringTable() {}
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/// insertString - insert a string to the string table
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/// @return false if the string already exists in the map.
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bool insertString(llvm::StringRef pString);
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/// finalizeOffset - finalize the output offset of strings. After this
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/// function been called, any string should not be added to this table
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/// @return the section size
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uint64_t finalizeOffset();
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/// emit - emit the string table
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void emit(MemoryRegion& pRegion);
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/// ----- observers -----///
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/// getOutputOffset - get the output offset of the string. This should be
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/// called after finalizeOffset.
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size_t getOutputOffset(llvm::StringRef pStr);
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private:
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typedef StringMapTy::iterator string_map_iterator;
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typedef StringMapTy::const_iterator const_string_map_iterator;
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private:
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/// m_StringMap - the string pool of this section. It maps the string to the
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/// output offset. The key of this map is the string, and the value is output
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/// offset
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StringMapTy m_StringMap;
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};
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} // namespace mcld
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#endif // MCLD_LD_MERGEDSTRINGTABLE_H_
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