diff options
Diffstat (limited to 'contrib/llvm/lib/Support/FormatVariadic.cpp')
| -rw-r--r-- | contrib/llvm/lib/Support/FormatVariadic.cpp | 155 | 
1 files changed, 0 insertions, 155 deletions
diff --git a/contrib/llvm/lib/Support/FormatVariadic.cpp b/contrib/llvm/lib/Support/FormatVariadic.cpp deleted file mode 100644 index f9e89f69b528..000000000000 --- a/contrib/llvm/lib/Support/FormatVariadic.cpp +++ /dev/null @@ -1,155 +0,0 @@ -//===- FormatVariadic.cpp - Format string parsing and analysis ----*-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 -//===----------------------------------------------------------------------===// - -#include "llvm/Support/FormatVariadic.h" - -using namespace llvm; - -static Optional<AlignStyle> translateLocChar(char C) { -  switch (C) { -  case '-': -    return AlignStyle::Left; -  case '=': -    return AlignStyle::Center; -  case '+': -    return AlignStyle::Right; -  default: -    return None; -  } -  LLVM_BUILTIN_UNREACHABLE; -} - -bool formatv_object_base::consumeFieldLayout(StringRef &Spec, AlignStyle &Where, -                                             size_t &Align, char &Pad) { -  Where = AlignStyle::Right; -  Align = 0; -  Pad = ' '; -  if (Spec.empty()) -    return true; - -  if (Spec.size() > 1) { -    // A maximum of 2 characters at the beginning can be used for something -    // other -    // than the width. -    // If Spec[1] is a loc char, then Spec[0] is a pad char and Spec[2:...] -    // contains the width. -    // Otherwise, if Spec[0] is a loc char, then Spec[1:...] contains the width. -    // Otherwise, Spec[0:...] contains the width. -    if (auto Loc = translateLocChar(Spec[1])) { -      Pad = Spec[0]; -      Where = *Loc; -      Spec = Spec.drop_front(2); -    } else if (auto Loc = translateLocChar(Spec[0])) { -      Where = *Loc; -      Spec = Spec.drop_front(1); -    } -  } - -  bool Failed = Spec.consumeInteger(0, Align); -  return !Failed; -} - -Optional<ReplacementItem> -formatv_object_base::parseReplacementItem(StringRef Spec) { -  StringRef RepString = Spec.trim("{}"); - -  // If the replacement sequence does not start with a non-negative integer, -  // this is an error. -  char Pad = ' '; -  std::size_t Align = 0; -  AlignStyle Where = AlignStyle::Right; -  StringRef Options; -  size_t Index = 0; -  RepString = RepString.trim(); -  if (RepString.consumeInteger(0, Index)) { -    assert(false && "Invalid replacement sequence index!"); -    return ReplacementItem{}; -  } -  RepString = RepString.trim(); -  if (!RepString.empty() && RepString.front() == ',') { -    RepString = RepString.drop_front(); -    if (!consumeFieldLayout(RepString, Where, Align, Pad)) -      assert(false && "Invalid replacement field layout specification!"); -  } -  RepString = RepString.trim(); -  if (!RepString.empty() && RepString.front() == ':') { -    Options = RepString.drop_front().trim(); -    RepString = StringRef(); -  } -  RepString = RepString.trim(); -  if (!RepString.empty()) { -    assert(false && "Unexpected characters found in replacement string!"); -  } - -  return ReplacementItem{Spec, Index, Align, Where, Pad, Options}; -} - -std::pair<ReplacementItem, StringRef> -formatv_object_base::splitLiteralAndReplacement(StringRef Fmt) { -  std::size_t From = 0; -  while (From < Fmt.size() && From != StringRef::npos) { -    std::size_t BO = Fmt.find_first_of('{', From); -    // Everything up until the first brace is a literal. -    if (BO != 0) -      return std::make_pair(ReplacementItem{Fmt.substr(0, BO)}, Fmt.substr(BO)); - -    StringRef Braces = -        Fmt.drop_front(BO).take_while([](char C) { return C == '{'; }); -    // If there is more than one brace, then some of them are escaped.  Treat -    // these as replacements. -    if (Braces.size() > 1) { -      size_t NumEscapedBraces = Braces.size() / 2; -      StringRef Middle = Fmt.substr(BO, NumEscapedBraces); -      StringRef Right = Fmt.drop_front(BO + NumEscapedBraces * 2); -      return std::make_pair(ReplacementItem{Middle}, Right); -    } -    // An unterminated open brace is undefined.  We treat the rest of the string -    // as a literal replacement, but we assert to indicate that this is -    // undefined and that we consider it an error. -    std::size_t BC = Fmt.find_first_of('}', BO); -    if (BC == StringRef::npos) { -      assert( -          false && -          "Unterminated brace sequence.  Escape with {{ for a literal brace."); -      return std::make_pair(ReplacementItem{Fmt}, StringRef()); -    } - -    // Even if there is a closing brace, if there is another open brace before -    // this closing brace, treat this portion as literal, and try again with the -    // next one. -    std::size_t BO2 = Fmt.find_first_of('{', BO + 1); -    if (BO2 < BC) -      return std::make_pair(ReplacementItem{Fmt.substr(0, BO2)}, -                            Fmt.substr(BO2)); - -    StringRef Spec = Fmt.slice(BO + 1, BC); -    StringRef Right = Fmt.substr(BC + 1); - -    auto RI = parseReplacementItem(Spec); -    if (RI.hasValue()) -      return std::make_pair(*RI, Right); - -    // If there was an error parsing the replacement item, treat it as an -    // invalid replacement spec, and just continue. -    From = BC + 1; -  } -  return std::make_pair(ReplacementItem{Fmt}, StringRef()); -} - -std::vector<ReplacementItem> -formatv_object_base::parseFormatString(StringRef Fmt) { -  std::vector<ReplacementItem> Replacements; -  ReplacementItem I; -  while (!Fmt.empty()) { -    std::tie(I, Fmt) = splitLiteralAndReplacement(Fmt); -    if (I.Type != ReplacementType::Empty) -      Replacements.push_back(I); -  } -  return Replacements; -} - -void detail::format_adapter::anchor() { }  | 
