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📄 AArch64TargetParser.def(12.01 KB)
📄 AArch64TargetParser.h(4.89 KB)
📄 AMDGPUMetadata.h(17.98 KB)
📄 AMDHSAKernelDescriptor.h(7.63 KB)
📄 ARMAttributeParser.h(3.2 KB)
📄 ARMBuildAttributes.h(8.6 KB)
📄 ARMEHABI.h(3.72 KB)
📄 ARMTargetParser.def(18.94 KB)
📄 ARMTargetParser.h(8.76 KB)
📄 ARMWinEH.h(18.27 KB)
📄 AlignOf.h(1.56 KB)
📄 Alignment.h(12.95 KB)
📄 Allocator.h(16.54 KB)
📄 AllocatorBase.h(3.87 KB)
📄 ArrayRecycler.h(4.78 KB)
📄 Atomic.h(1.09 KB)
📄 AtomicOrdering.h(6.01 KB)
📄 Automaton.h(9.64 KB)
📄 Base64.h(1.84 KB)
📄 BinaryByteStream.h(9.14 KB)
📄 BinaryItemStream.h(3.63 KB)
📄 BinaryStream.h(3.75 KB)
📄 BinaryStreamArray.h(12.46 KB)
📄 BinaryStreamError.h(1.29 KB)
📄 BinaryStreamReader.h(11.01 KB)
📄 BinaryStreamRef.h(10.09 KB)
📄 BinaryStreamWriter.h(7.79 KB)
📄 BlockFrequency.h(2.41 KB)
📄 BranchProbability.h(7.92 KB)
📄 BuryPointer.h(1.03 KB)
📄 CBindingWrapping.h(1.86 KB)
📄 CFGDiff.h(9.95 KB)
📄 CFGUpdate.h(4.12 KB)
📄 COM.h(1004 B)
📄 CRC.h(1.63 KB)
📄 CachePruning.h(3.5 KB)
📄 Capacity.h(972 B)
📄 Casting.h(13.92 KB)
📄 CheckedArithmetic.h(3.71 KB)
📄 Chrono.h(5.78 KB)
📄 CodeGen.h(1.96 KB)
📄 CodeGenCoverage.h(1.18 KB)
📄 CommandLine.h(71.22 KB)
📄 Compiler.h(19.5 KB)
📄 Compression.h(1.39 KB)
📄 ConvertUTF.h(11.4 KB)
📄 CrashRecoveryContext.h(9.26 KB)
📄 DJB.h(1.05 KB)
📄 DOTGraphTraits.h(5.58 KB)
📄 DataExtractor.h(30.28 KB)
📄 DataTypes.h(775 B)
📄 Debug.h(4.7 KB)
📄 DebugCounter.h(7.01 KB)
📄 DynamicLibrary.h(5.77 KB)
📄 ELFAttributeParser.h(2.22 KB)
📄 ELFAttributes.h(1.02 KB)
📄 Endian.h(14.28 KB)
📄 EndianStream.h(1.93 KB)
📄 Errc.h(3.8 KB)
📄 Errno.h(1.45 KB)
📄 Error.h(43.82 KB)
📄 ErrorHandling.h(6.39 KB)
📄 ErrorOr.h(7.48 KB)
📄 ExtensibleRTTI.h(4.02 KB)
📄 FileCheck.h(6.69 KB)
📄 FileCollector.h(3.74 KB)
📄 FileOutputBuffer.h(3.36 KB)
📄 FileSystem.h(53.03 KB)
📄 FileUtilities.h(3.83 KB)
📄 Format.h(9.45 KB)
📄 FormatAdapters.h(3.38 KB)
📄 FormatCommon.h(2.05 KB)
📄 FormatProviders.h(15.27 KB)
📄 FormatVariadic.h(9.88 KB)
📄 FormatVariadicDetails.h(5.3 KB)
📄 FormattedStream.h(6.42 KB)
📄 GenericDomTree.h(30.89 KB)
📄 GenericDomTreeConstruction.h(63.42 KB)
📄 GenericIteratedDominanceFrontier.h(7.31 KB)
📄 GlobPattern.h(1.35 KB)
📄 GraphWriter.h(11.79 KB)
📄 Host.h(2.68 KB)
📄 InitLLVM.h(1.79 KB)
📄 ItaniumManglingCanonicalizer.h(3.17 KB)
📄 JSON.h(28.25 KB)
📄 KnownBits.h(8.35 KB)
📄 LEB128.h(5.74 KB)
📄 LineIterator.h(2.62 KB)
📄 Locale.h(223 B)
📄 LockFileManager.h(3.13 KB)
📄 LowLevelTypeImpl.h(11.94 KB)
📄 MD5.h(3.39 KB)
📄 MSVCErrorWorkarounds.h(2.62 KB)
📄 MachineValueType.h(42.37 KB)
📄 ManagedStatic.h(4.21 KB)
📄 MathExtras.h(32.81 KB)
📄 MemAlloc.h(3.21 KB)
📄 Memory.h(6.94 KB)
📄 MemoryBuffer.h(10.98 KB)
📄 MipsABIFlags.h(3.92 KB)
📄 Mutex.h(2.14 KB)
📄 NativeFormatting.h(1.64 KB)
📄 OnDiskHashTable.h(21.97 KB)
📄 OptimizedStructLayout.h(5.89 KB)
📄 Parallel.h(5.99 KB)
📄 Path.h(15.6 KB)
📄 PluginLoader.h(1.29 KB)
📄 PointerLikeTypeTraits.h(5.69 KB)
📄 PrettyStackTrace.h(4.45 KB)
📄 Printable.h(1.5 KB)
📄 Process.h(9.31 KB)
📄 Program.h(10.35 KB)
📄 RISCVAttributeParser.h(1.15 KB)
📄 RISCVAttributes.h(1.2 KB)
📄 RISCVTargetParser.def(446 B)
📄 RWMutex.h(5.65 KB)
📄 RandomNumberGenerator.h(2.29 KB)
📄 Recycler.h(3.47 KB)
📄 RecyclingAllocator.h(2.38 KB)
📄 Regex.h(4.37 KB)
📄 Registry.h(5.14 KB)
📄 ReverseIteration.h(360 B)
📄 SHA1.h(2.37 KB)
📄 SMLoc.h(1.78 KB)
📄 SMTAPI.h(16.33 KB)
📄 SaveAndRestore.h(1.02 KB)
📄 ScaledNumber.h(30.65 KB)
📄 ScopedPrinter.h(11.39 KB)
📄 Signals.h(5.22 KB)
📄 Signposts.h(1.29 KB)
📄 SmallVectorMemoryBuffer.h(2.28 KB)
📁 Solaris
📄 SourceMgr.h(10.37 KB)
📄 SpecialCaseList.h(6.01 KB)
📄 StringSaver.h(1.94 KB)
📄 SuffixTree.h(13.15 KB)
📄 SwapByteOrder.h(4.8 KB)
📄 SymbolRemappingReader.h(4.36 KB)
📄 SystemUtils.h(1.02 KB)
📄 TarWriter.h(941 B)
📄 TargetOpcodes.def(22.01 KB)
📄 TargetParser.h(4.08 KB)
📄 TargetRegistry.h(46.87 KB)
📄 TargetSelect.h(6.2 KB)
📄 TaskQueue.h(4.24 KB)
📄 ThreadLocal.h(2.08 KB)
📄 ThreadPool.h(3.44 KB)
📄 Threading.h(10.62 KB)
📄 TimeProfiler.h(3.46 KB)
📄 Timer.h(8.93 KB)
📄 ToolOutputFile.h(2.24 KB)
📄 TrailingObjects.h(15.19 KB)
📄 TrigramIndex.h(2.84 KB)
📄 TypeName.h(2.13 KB)
📄 TypeSize.h(8.53 KB)
📄 Unicode.h(2.5 KB)
📄 UnicodeCharRanges.h(3.27 KB)
📄 Valgrind.h(1.16 KB)
📄 VersionTuple.h(5.22 KB)
📄 VirtualFileSystem.h(28.28 KB)
📄 Watchdog.h(1.15 KB)
📄 Win64EH.h(4.82 KB)
📁 Windows
📄 WindowsError.h(541 B)
📄 WithColor.h(4.64 KB)
📄 X86DisassemblerDecoderCommon.h(29.39 KB)
📄 X86TargetParser.def(8.21 KB)
📄 X86TargetParser.h(3.57 KB)
📄 YAMLParser.h(16.29 KB)
📄 YAMLTraits.h(67.62 KB)
📄 circular_raw_ostream.h(4.97 KB)
📄 raw_os_ostream.h(1.29 KB)
📄 raw_ostream.h(20.82 KB)
📄 raw_sha1_ostream.h(1.29 KB)
📄 thread.h(1.33 KB)
📄 type_traits.h(6.75 KB)
📄 xxhash.h(1.92 KB)

Editing: Format.h

//===- Format.h - Efficient printf-style formatting for streams -*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file implements the format() function, which can be used with other
// LLVM subsystems to provide printf-style formatting.  This gives all the power
// and risk of printf.  This can be used like this (with raw_ostreams as an
// example):
//
//    OS << "mynumber: " << format("%4.5f", 1234.412) << '\n';
//
// Or if you prefer:
//
//  OS << format("mynumber: %4.5f\n", 1234.412);
//
//===----------------------------------------------------------------------===//

#ifndef LLVM_SUPPORT_FORMAT_H
#define LLVM_SUPPORT_FORMAT_H

#include "llvm/ADT/ArrayRef.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/Support/DataTypes.h"
#include <cassert>
#include <cstdio>
#include <tuple>
#include <utility>

namespace llvm {

/// This is a helper class used for handling formatted output.  It is the
/// abstract base class of a templated derived class.
class format_object_base {
protected:
  const char *Fmt;
  ~format_object_base() = default; // Disallow polymorphic deletion.
  format_object_base(const format_object_base &) = default;
  virtual void home(); // Out of line virtual method.

/// Call snprintf() for this object, on the given buffer and size.
  virtual int snprint(char *Buffer, unsigned BufferSize) const = 0;

public:
  format_object_base(const char *fmt) : Fmt(fmt) {}

/// Format the object into the specified buffer.  On success, this returns
  /// the length of the formatted string.  If the buffer is too small, this
  /// returns a length to retry with, which will be larger than BufferSize.
  unsigned print(char *Buffer, unsigned BufferSize) const {
    assert(BufferSize && "Invalid buffer size!");

// Print the string, leaving room for the terminating null.
    int N = snprint(Buffer, BufferSize);

// VC++ and old GlibC return negative on overflow, just double the size.
    if (N < 0)
      return BufferSize * 2;

// Other implementations yield number of bytes needed, not including the
    // final '\0'.
    if (unsigned(N) >= BufferSize)
      return N + 1;

// Otherwise N is the length of output (not including the final '\0').
    return N;
  }
};

/// These are templated helper classes used by the format function that
/// capture the object to be formatted and the format string. When actually
/// printed, this synthesizes the string into a temporary buffer provided and
/// returns whether or not it is big enough.

// Helper to validate that format() parameters are scalars or pointers.
template <typename... Args> struct validate_format_parameters;
template <typename Arg, typename... Args>
struct validate_format_parameters<Arg, Args...> {
  static_assert(std::is_scalar<Arg>::value,
                "format can't be used with non fundamental / non pointer type");
  validate_format_parameters() { validate_format_parameters<Args...>(); }
};
template <> struct validate_format_parameters<> {};

template <typename... Ts>
class format_object final : public format_object_base {
  std::tuple<Ts...> Vals;

template <std::size_t... Is>
  int snprint_tuple(char *Buffer, unsigned BufferSize,
                    std::index_sequence<Is...>) const {
#ifdef _MSC_VER
    return _snprintf(Buffer, BufferSize, Fmt, std::get<Is>(Vals)...);
#else
    return snprintf(Buffer, BufferSize, Fmt, std::get<Is>(Vals)...);
#endif
  }

public:
  format_object(const char *fmt, const Ts &... vals)
      : format_object_base(fmt), Vals(vals...) {
    validate_format_parameters<Ts...>();
  }

int snprint(char *Buffer, unsigned BufferSize) const override {
    return snprint_tuple(Buffer, BufferSize, std::index_sequence_for<Ts...>());
  }
};

/// These are helper functions used to produce formatted output.  They use
/// template type deduction to construct the appropriate instance of the
/// format_object class to simplify their construction.
///
/// This is typically used like:
/// \code
///   OS << format("%0.4f", myfloat) << '\n';
/// \endcode

template <typename... Ts>
inline format_object<Ts...> format(const char *Fmt, const Ts &... Vals) {
  return format_object<Ts...>(Fmt, Vals...);
}

/// This is a helper class for left_justify, right_justify, and center_justify.
class FormattedString {
public:
  enum Justification { JustifyNone, JustifyLeft, JustifyRight, JustifyCenter };
  FormattedString(StringRef S, unsigned W, Justification J)
      : Str(S), Width(W), Justify(J) {}

private:
  StringRef Str;
  unsigned Width;
  Justification Justify;
  friend class raw_ostream;
};

/// left_justify - append spaces after string so total output is
/// \p Width characters.  If \p Str is larger that \p Width, full string
/// is written with no padding.
inline FormattedString left_justify(StringRef Str, unsigned Width) {
  return FormattedString(Str, Width, FormattedString::JustifyLeft);
}

/// right_justify - add spaces before string so total output is
/// \p Width characters.  If \p Str is larger that \p Width, full string
/// is written with no padding.
inline FormattedString right_justify(StringRef Str, unsigned Width) {
  return FormattedString(Str, Width, FormattedString::JustifyRight);
}

/// center_justify - add spaces before and after string so total output is
/// \p Width characters.  If \p Str is larger that \p Width, full string
/// is written with no padding.
inline FormattedString center_justify(StringRef Str, unsigned Width) {
  return FormattedString(Str, Width, FormattedString::JustifyCenter);
}

/// This is a helper class used for format_hex() and format_decimal().
class FormattedNumber {
  uint64_t HexValue;
  int64_t DecValue;
  unsigned Width;
  bool Hex;
  bool Upper;
  bool HexPrefix;
  friend class raw_ostream;

public:
  FormattedNumber(uint64_t HV, int64_t DV, unsigned W, bool H, bool U,
                  bool Prefix)
      : HexValue(HV), DecValue(DV), Width(W), Hex(H), Upper(U),
        HexPrefix(Prefix) {}
};

/// format_hex - Output \p N as a fixed width hexadecimal. If number will not
/// fit in width, full number is still printed.  Examples:
///   OS << format_hex(255, 4)              => 0xff
///   OS << format_hex(255, 4, true)        => 0xFF
///   OS << format_hex(255, 6)              => 0x00ff
///   OS << format_hex(255, 2)              => 0xff
inline FormattedNumber format_hex(uint64_t N, unsigned Width,
                                  bool Upper = false) {
  assert(Width <= 18 && "hex width must be <= 18");
  return FormattedNumber(N, 0, Width, true, Upper, true);
}

/// format_hex_no_prefix - Output \p N as a fixed width hexadecimal. Does not
/// prepend '0x' to the outputted string.  If number will not fit in width,
/// full number is still printed.  Examples:
///   OS << format_hex_no_prefix(255, 2)              => ff
///   OS << format_hex_no_prefix(255, 2, true)        => FF
///   OS << format_hex_no_prefix(255, 4)              => 00ff
///   OS << format_hex_no_prefix(255, 1)              => ff
inline FormattedNumber format_hex_no_prefix(uint64_t N, unsigned Width,
                                            bool Upper = false) {
  assert(Width <= 16 && "hex width must be <= 16");
  return FormattedNumber(N, 0, Width, true, Upper, false);
}

/// format_decimal - Output \p N as a right justified, fixed-width decimal. If
/// number will not fit in width, full number is still printed.  Examples:
///   OS << format_decimal(0, 5)     => "    0"
///   OS << format_decimal(255, 5)   => "  255"
///   OS << format_decimal(-1, 3)    => " -1"
///   OS << format_decimal(12345, 3) => "12345"
inline FormattedNumber format_decimal(int64_t N, unsigned Width) {
  return FormattedNumber(0, N, Width, false, false, false);
}

class FormattedBytes {
  ArrayRef<uint8_t> Bytes;

// If not None, display offsets for each line relative to starting value.
  Optional<uint64_t> FirstByteOffset;
  uint32_t IndentLevel;  // Number of characters to indent each line.
  uint32_t NumPerLine;   // Number of bytes to show per line.
  uint8_t ByteGroupSize; // How many hex bytes are grouped without spaces
  bool Upper;            // Show offset and hex bytes as upper case.
  bool ASCII;            // Show the ASCII bytes for the hex bytes to the right.
  friend class raw_ostream;

public:
  FormattedBytes(ArrayRef<uint8_t> B, uint32_t IL, Optional<uint64_t> O,
                 uint32_t NPL, uint8_t BGS, bool U, bool A)
      : Bytes(B), FirstByteOffset(O), IndentLevel(IL), NumPerLine(NPL),
        ByteGroupSize(BGS), Upper(U), ASCII(A) {

if (ByteGroupSize > NumPerLine)
      ByteGroupSize = NumPerLine;
  }
};

inline FormattedBytes
format_bytes(ArrayRef<uint8_t> Bytes, Optional<uint64_t> FirstByteOffset = None,
             uint32_t NumPerLine = 16, uint8_t ByteGroupSize = 4,
             uint32_t IndentLevel = 0, bool Upper = false) {
  return FormattedBytes(Bytes, IndentLevel, FirstByteOffset, NumPerLine,
                        ByteGroupSize, Upper, false);
}

inline FormattedBytes
format_bytes_with_ascii(ArrayRef<uint8_t> Bytes,
                        Optional<uint64_t> FirstByteOffset = None,
                        uint32_t NumPerLine = 16, uint8_t ByteGroupSize = 4,
                        uint32_t IndentLevel = 0, bool Upper = false) {
  return FormattedBytes(Bytes, IndentLevel, FirstByteOffset, NumPerLine,
                        ByteGroupSize, Upper, true);
}

} // end namespace llvm

#endif

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Editing: Format.h

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