kc3-lang/angle/src/compiler/translator/ImmutableString.cpp

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• Hash : fbb1c792
  Author :
  Date : 2018-01-19T16:26:59
  

  Store symbol names as a ImmutableString
  
  This will enable compile-time initialization of built-in symbols as
  well as reducing copying strings.
  
  Most of the code that deals with names is changed to use
  ImmutableString where it makes sense to avoid conversions.
  
  The lexer/parser now allocate const char pointers into pool memory
  instead of allocating TStrings. These are then converted to
  ImmutableString upon entering TParseContext.
  
  BUG=angleproject:2267
  TEST=angle_unittests, angle_end2end_tests
  
  Change-Id: I244d6271ea1ecf7150d4f89dfa388a7745a1150c
  Reviewed-on: https://chromium-review.googlesource.com/881561
  Commit-Queue: Olli Etuaho <oetuaho@nvidia.com>
  Reviewed-by: Corentin Wallez <cwallez@chromium.org>
  

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• src/compiler/translator/ImmutableString.cpp

• //
  // Copyright (c) 2018 The ANGLE Project Authors. All rights reserved.
  // Use of this source code is governed by a BSD-style license that can be
  // found in the LICENSE file.
  //
  // ImmutableString.cpp: Wrapper for static or pool allocated char arrays, that are guaranteed to be
  // valid and unchanged for the duration of the compilation.
  //
  
  #include "compiler/translator/ImmutableString.h"
  
  std::ostream &operator<<(std::ostream &os, const sh::ImmutableString &str)
  {
      return os.write(str.data(), str.length());
  }
  
  #if defined(_MSC_VER)
  #pragma warning(disable : 4309)  // truncation of constant value
  #endif
  
  namespace sh
  {
  
  template <>
  const size_t ImmutableString::FowlerNollVoHash<4>::kFnvPrime = 16777619u;
  
  template <>
  const size_t ImmutableString::FowlerNollVoHash<4>::kFnvOffsetBasis = 0x811c9dc5u;
  
  template <>
  const size_t ImmutableString::FowlerNollVoHash<8>::kFnvPrime =
      static_cast<size_t>(1099511628211ull);
  
  template <>
  const size_t ImmutableString::FowlerNollVoHash<8>::kFnvOffsetBasis =
      static_cast<size_t>(0xcbf29ce484222325ull);
  
  }  // namespace sh
  

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