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      1 //===- DWARFDebugAbbrev.h ---------------------------------------*- C++ -*-===//
      2 //
      3 //                     The LLVM Compiler Infrastructure
      4 //
      5 // This file is distributed under the University of Illinois Open Source
      6 // License. See LICENSE.TXT for details.
      7 //
      8 //===----------------------------------------------------------------------===//
      9 
     10 #ifndef LLVM_DEBUGINFO_DWARFDEBUGABBREV_H
     11 #define LLVM_DEBUGINFO_DWARFDEBUGABBREV_H
     12 
     13 #include "llvm/DebugInfo/DWARF/DWARFAbbreviationDeclaration.h"
     14 #include "llvm/Support/DataExtractor.h"
     15 #include <cstdint>
     16 #include <map>
     17 #include <vector>
     18 
     19 namespace llvm {
     20 
     21 class DWARFAbbreviationDeclarationSet {
     22   uint32_t Offset;
     23   /// Code of the first abbreviation, if all abbreviations in the set have
     24   /// consecutive codes. UINT32_MAX otherwise.
     25   uint32_t FirstAbbrCode;
     26   std::vector<DWARFAbbreviationDeclaration> Decls;
     27 
     28   typedef std::vector<DWARFAbbreviationDeclaration>::const_iterator
     29       const_iterator;
     30 
     31 public:
     32   DWARFAbbreviationDeclarationSet();
     33 
     34   uint32_t getOffset() const { return Offset; }
     35   void dump(raw_ostream &OS) const;
     36   bool extract(DataExtractor Data, uint32_t *OffsetPtr);
     37 
     38   const DWARFAbbreviationDeclaration *
     39   getAbbreviationDeclaration(uint32_t AbbrCode) const;
     40 
     41   const_iterator begin() const {
     42     return Decls.begin();
     43   }
     44 
     45   const_iterator end() const {
     46     return Decls.end();
     47   }
     48 
     49 private:
     50   void clear();
     51 };
     52 
     53 class DWARFDebugAbbrev {
     54   typedef std::map<uint64_t, DWARFAbbreviationDeclarationSet>
     55     DWARFAbbreviationDeclarationSetMap;
     56 
     57   DWARFAbbreviationDeclarationSetMap AbbrDeclSets;
     58   mutable DWARFAbbreviationDeclarationSetMap::const_iterator PrevAbbrOffsetPos;
     59 
     60 public:
     61   DWARFDebugAbbrev();
     62 
     63   const DWARFAbbreviationDeclarationSet *
     64   getAbbreviationDeclarationSet(uint64_t CUAbbrOffset) const;
     65 
     66   void dump(raw_ostream &OS) const;
     67   void extract(DataExtractor Data);
     68 
     69   DWARFAbbreviationDeclarationSetMap::const_iterator begin() const {
     70     return AbbrDeclSets.begin();
     71   }
     72 
     73   DWARFAbbreviationDeclarationSetMap::const_iterator end() const {
     74     return AbbrDeclSets.end();
     75   }
     76 
     77 private:
     78   void clear();
     79 };
     80 
     81 } // end namespace llvm
     82 
     83 #endif // LLVM_DEBUGINFO_DWARFDEBUGABBREV_H
     84