forked from OSchip/llvm-project
				
			
		
			
				
	
	
		
			355 lines
		
	
	
		
			9.8 KiB
		
	
	
	
		
			C++
		
	
	
	
			
		
		
	
	
			355 lines
		
	
	
		
			9.8 KiB
		
	
	
	
		
			C++
		
	
	
	
//===-- StreamWriter.h ----------------------------------------------------===//
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//
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//                     The LLVM Compiler Infrastructure
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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 LLVM_TOOLS_LLVM_READOBJ_STREAMWRITER_H
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#define LLVM_TOOLS_LLVM_READOBJ_STREAMWRITER_H
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#include "llvm/ADT/APSInt.h"
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#include "llvm/ADT/ArrayRef.h"
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#include "llvm/ADT/SmallVector.h"
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#include "llvm/ADT/StringRef.h"
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#include "llvm/Support/DataTypes.h"
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#include "llvm/Support/Endian.h"
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#include "llvm/Support/raw_ostream.h"
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#include <algorithm>
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using namespace llvm;
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namespace llvm {
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template<typename T>
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struct EnumEntry {
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  StringRef Name;
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  // While Name suffices in most of the cases, in certain cases
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  // GNU style and LLVM style of ELFDumper do not
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  // display same string for same enum. The AltName if initialized appropriately
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  // will hold the string that GNU style emits.
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  // Example:
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  // "EM_X86_64" string on LLVM style for Elf_Ehdr->e_machine corresponds to
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  // "Advanced Micro Devices X86-64" on GNU style
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  StringRef AltName;
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  T Value;
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  EnumEntry(StringRef N, StringRef A, T V) : Name(N), AltName(A), Value(V) {}
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  EnumEntry(StringRef N, T V) : Name(N), AltName(N), Value(V) {}
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};
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struct HexNumber {
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  // To avoid sign-extension we have to explicitly cast to the appropriate
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  // unsigned type. The overloads are here so that every type that is implicitly
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  // convertible to an integer (including enums and endian helpers) can be used
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  // without requiring type traits or call-site changes.
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  HexNumber(char             Value) : Value(static_cast<unsigned char>(Value)) { }
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  HexNumber(signed char      Value) : Value(static_cast<unsigned char>(Value)) { }
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  HexNumber(signed short     Value) : Value(static_cast<unsigned short>(Value)) { }
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  HexNumber(signed int       Value) : Value(static_cast<unsigned int>(Value)) { }
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  HexNumber(signed long      Value) : Value(static_cast<unsigned long>(Value)) { }
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  HexNumber(signed long long Value) : Value(static_cast<unsigned long long>(Value)) { }
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  HexNumber(unsigned char      Value) : Value(Value) { }
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  HexNumber(unsigned short     Value) : Value(Value) { }
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  HexNumber(unsigned int       Value) : Value(Value) { }
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  HexNumber(unsigned long      Value) : Value(Value) { }
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  HexNumber(unsigned long long Value) : Value(Value) { }
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  uint64_t Value;
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};
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raw_ostream &operator<<(raw_ostream &OS, const HexNumber& Value);
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const std::string to_hexString(uint64_t Value, bool UpperCase = true);
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template <class T> const std::string to_string(const T &Value) {
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  std::string number;
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  llvm::raw_string_ostream stream(number);
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  stream << Value;
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  return stream.str();
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}
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class StreamWriter {
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public:
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  StreamWriter(raw_ostream &OS)
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    : OS(OS)
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    , IndentLevel(0) {
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  }
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  void flush() {
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    OS.flush();
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  }
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  void indent(int Levels = 1) {
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    IndentLevel += Levels;
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  }
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  void unindent(int Levels = 1) {
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    IndentLevel = std::max(0, IndentLevel - Levels);
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  }
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  void printIndent() {
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    for (int i = 0; i < IndentLevel; ++i)
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      OS << "  ";
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  }
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  template<typename T>
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  HexNumber hex(T Value) {
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    return HexNumber(Value);
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  }
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  template<typename T, typename TEnum>
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  void printEnum(StringRef Label, T Value,
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                 ArrayRef<EnumEntry<TEnum> > EnumValues) {
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    StringRef Name;
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    bool Found = false;
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    for (const auto &EnumItem : EnumValues) {
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      if (EnumItem.Value == Value) {
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        Name = EnumItem.Name;
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        Found = true;
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        break;
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      }
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    }
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    if (Found) {
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      startLine() << Label << ": " << Name << " (" << hex(Value) << ")\n";
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    } else {
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      startLine() << Label << ": " << hex(Value) << "\n";
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    }
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  }
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  template <typename T, typename TFlag>
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  void printFlags(StringRef Label, T Value, ArrayRef<EnumEntry<TFlag>> Flags,
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                  TFlag EnumMask1 = {}, TFlag EnumMask2 = {},
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                  TFlag EnumMask3 = {}) {
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    typedef EnumEntry<TFlag> FlagEntry;
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    typedef SmallVector<FlagEntry, 10> FlagVector;
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    FlagVector SetFlags;
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    for (const auto &Flag : Flags) {
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      if (Flag.Value == 0)
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        continue;
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      TFlag EnumMask{};
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      if (Flag.Value & EnumMask1)
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        EnumMask = EnumMask1;
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      else if (Flag.Value & EnumMask2)
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        EnumMask = EnumMask2;
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      else if (Flag.Value & EnumMask3)
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        EnumMask = EnumMask3;
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      bool IsEnum = (Flag.Value & EnumMask) != 0;
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      if ((!IsEnum && (Value & Flag.Value) == Flag.Value) ||
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          (IsEnum  && (Value & EnumMask) == Flag.Value)) {
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        SetFlags.push_back(Flag);
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      }
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    }
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    std::sort(SetFlags.begin(), SetFlags.end(), &flagName<TFlag>);
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    startLine() << Label << " [ (" << hex(Value) << ")\n";
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    for (const auto &Flag : SetFlags) {
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      startLine() << "  " << Flag.Name << " (" << hex(Flag.Value) << ")\n";
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    }
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    startLine() << "]\n";
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  }
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  template<typename T>
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  void printFlags(StringRef Label, T Value) {
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    startLine() << Label << " [ (" << hex(Value) << ")\n";
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    uint64_t Flag = 1;
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    uint64_t Curr = Value;
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    while (Curr > 0) {
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      if (Curr & 1)
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        startLine() << "  " << hex(Flag) << "\n";
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      Curr >>= 1;
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      Flag <<= 1;
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    }
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    startLine() << "]\n";
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  }
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  void printNumber(StringRef Label, uint64_t Value) {
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    startLine() << Label << ": " << Value << "\n";
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  }
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  void printNumber(StringRef Label, uint32_t Value) {
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    startLine() << Label << ": " << Value << "\n";
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  }
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  void printNumber(StringRef Label, uint16_t Value) {
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    startLine() << Label << ": " << Value << "\n";
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  }
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  void printNumber(StringRef Label, uint8_t Value) {
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    startLine() << Label << ": " << unsigned(Value) << "\n";
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  }
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  void printNumber(StringRef Label, int64_t Value) {
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    startLine() << Label << ": " << Value << "\n";
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  }
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  void printNumber(StringRef Label, int32_t Value) {
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    startLine() << Label << ": " << Value << "\n";
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  }
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  void printNumber(StringRef Label, int16_t Value) {
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    startLine() << Label << ": " << Value << "\n";
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  }
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  void printNumber(StringRef Label, int8_t Value) {
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    startLine() << Label << ": " << int(Value) << "\n";
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  }
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  void printNumber(StringRef Label, APSInt Value) {
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    startLine() << Label << ": " << Value << "\n";
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  }
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  void printBoolean(StringRef Label, bool Value) {
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    startLine() << Label << ": " << (Value ? "Yes" : "No") << '\n';
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  }
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  template <typename T>
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  void printList(StringRef Label, const T &List) {
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    startLine() << Label << ": [";
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    bool Comma = false;
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    for (const auto &Item : List) {
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      if (Comma)
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        OS << ", ";
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      OS << Item;
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      Comma = true;
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    }
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    OS << "]\n";
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  }
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  template <typename T>
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  void printHexList(StringRef Label, const T &List) {
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    startLine() << Label << ": [";
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    bool Comma = false;
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    for (const auto &Item : List) {
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      if (Comma)
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        OS << ", ";
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      OS << hex(Item);
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      Comma = true;
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    }
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    OS << "]\n";
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  }
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  template<typename T>
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  void printHex(StringRef Label, T Value) {
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    startLine() << Label << ": " << hex(Value) << "\n";
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  }
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  template<typename T>
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  void printHex(StringRef Label, StringRef Str, T Value) {
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    startLine() << Label << ": " << Str << " (" << hex(Value) << ")\n";
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  }
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  template <typename T>
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  void printSymbolOffset(StringRef Label, StringRef Symbol, T Value) {
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    startLine() << Label << ": " << Symbol << '+' << hex(Value) << '\n';
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  }
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  void printString(StringRef Label, StringRef Value) {
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    startLine() << Label << ": " << Value << "\n";
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  }
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  void printString(StringRef Label, const std::string &Value) {
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    startLine() << Label << ": " << Value << "\n";
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  }
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  template<typename T>
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  void printNumber(StringRef Label, StringRef Str, T Value) {
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    startLine() << Label << ": " << Str << " (" << Value << ")\n";
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  }
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  void printBinary(StringRef Label, StringRef Str, ArrayRef<uint8_t> Value) {
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    printBinaryImpl(Label, Str, Value, false);
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  }
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  void printBinary(StringRef Label, StringRef Str, ArrayRef<char> Value) {
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    auto V = makeArrayRef(reinterpret_cast<const uint8_t*>(Value.data()),
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                          Value.size());
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    printBinaryImpl(Label, Str, V, false);
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  }
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  void printBinary(StringRef Label, ArrayRef<uint8_t> Value) {
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    printBinaryImpl(Label, StringRef(), Value, false);
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  }
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  void printBinary(StringRef Label, ArrayRef<char> Value) {
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    auto V = makeArrayRef(reinterpret_cast<const uint8_t*>(Value.data()),
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                          Value.size());
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    printBinaryImpl(Label, StringRef(), V, false);
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  }
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  void printBinary(StringRef Label, StringRef Value) {
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    auto V = makeArrayRef(reinterpret_cast<const uint8_t*>(Value.data()),
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                          Value.size());
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    printBinaryImpl(Label, StringRef(), V, false);
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  }
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  void printBinaryBlock(StringRef Label, StringRef Value) {
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    auto V = makeArrayRef(reinterpret_cast<const uint8_t*>(Value.data()),
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                          Value.size());
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    printBinaryImpl(Label, StringRef(), V, true);
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  }
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  raw_ostream& startLine() {
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    printIndent();
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    return OS;
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  }
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  raw_ostream& getOStream() {
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    return OS;
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  }
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private:
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  template<typename T>
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  static bool flagName(const EnumEntry<T>& lhs, const EnumEntry<T>& rhs) {
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    return lhs.Name < rhs.Name;
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  }
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  void printBinaryImpl(StringRef Label, StringRef Str, ArrayRef<uint8_t> Value,
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                       bool Block);
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  raw_ostream &OS;
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  int IndentLevel;
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};
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template <>
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inline void
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StreamWriter::printHex<support::ulittle16_t>(StringRef Label,
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                                             support::ulittle16_t Value) {
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  startLine() << Label << ": " << hex(Value) << "\n";
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}
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struct DictScope {
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  DictScope(StreamWriter& W, StringRef N) : W(W) {
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    W.startLine() << N << " {\n";
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    W.indent();
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  }
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  ~DictScope() {
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    W.unindent();
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    W.startLine() << "}\n";
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  }
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  StreamWriter& W;
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};
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struct ListScope {
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  ListScope(StreamWriter& W, StringRef N) : W(W) {
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    W.startLine() << N << " [\n";
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    W.indent();
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  }
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  ~ListScope() {
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    W.unindent();
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    W.startLine() << "]\n";
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  }
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  StreamWriter& W;
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};
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} // namespace llvm
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#endif
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