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//===-- DWARFDebugMacro.h ---------------------------------------*- C++ -*-===//
//                     The LLVM Compiler Infrastructure
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.


#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/Support/DataExtractor.h"
#include "llvm/Support/Dwarf.h"

namespace llvm {

class raw_ostream;

class DWARFDebugMacro {
  /// A single macro entry within a macro list.
  struct Entry {
    /// The type of the macro entry.
    uint32_t Type;
    union {
      /// The source line where the macro is defined.
      uint64_t Line;
      /// Vendor extension constant value.
      uint64_t ExtConstant;

    union {
      /// The string (name, value) of the macro entry.
      const char *MacroStr;
      // An unsigned integer indicating the identity of the source file.
      uint64_t File;
      /// Vendor extension string.
      const char *ExtStr;

  typedef SmallVector<Entry, 4> MacroList;

  /// A list of all the macro entries in the debug_macinfo section.
  MacroList Macros;

  DWARFDebugMacro() {}
  /// Print the macro list found within the debug_macinfo section.
  void dump(raw_ostream &OS) const;
  /// Parse the debug_macinfo section accessible via the 'data' parameter.
  void parse(DataExtractor data);