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author | Android Build Coastguard Worker <android-build-coastguard-worker@google.com> | 2022-06-15 21:47:18 +0000 |
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committer | Android Build Coastguard Worker <android-build-coastguard-worker@google.com> | 2022-06-15 21:47:18 +0000 |
commit | a32061b365b2d32963d08e27396cbf32e08c31cb (patch) | |
tree | cb306ffb64819f95c080c3cb6bfcdfb45a7b3a76 /third_party/abseil-cpp/absl/strings/internal/string_constant.h | |
parent | 93534cddabc1dc3b7dfa5387784c6c7394f729c4 (diff) | |
parent | b7c9dafe99969a4e9d5ffa101bb9a8d6e1df69df (diff) | |
download | webrtc-android12-mainline-tzdata3-release.tar.gz |
Snap for 8730993 from b7c9dafe99969a4e9d5ffa101bb9a8d6e1df69df to mainline-tzdata3-releaseaml_tz3_314012070aml_tz3_314012050aml_tz3_314012010aml_tz3_313110000aml_tz3_312511020aml_tz3_312511010aml_tz3_312410020aml_tz3_312410010android12-mainline-tzdata3-releaseaml_tz3_314012010
Change-Id: Iab4fa0d9b620eddf41ca88e1eb5547f79c316203
Diffstat (limited to 'third_party/abseil-cpp/absl/strings/internal/string_constant.h')
-rw-r--r-- | third_party/abseil-cpp/absl/strings/internal/string_constant.h | 64 |
1 files changed, 0 insertions, 64 deletions
diff --git a/third_party/abseil-cpp/absl/strings/internal/string_constant.h b/third_party/abseil-cpp/absl/strings/internal/string_constant.h deleted file mode 100644 index a11336b7f0..0000000000 --- a/third_party/abseil-cpp/absl/strings/internal/string_constant.h +++ /dev/null @@ -1,64 +0,0 @@ -// Copyright 2020 The Abseil Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// https://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#ifndef ABSL_STRINGS_INTERNAL_STRING_CONSTANT_H_ -#define ABSL_STRINGS_INTERNAL_STRING_CONSTANT_H_ - -#include "absl/meta/type_traits.h" -#include "absl/strings/string_view.h" - -namespace absl { -ABSL_NAMESPACE_BEGIN -namespace strings_internal { - -// StringConstant<T> represents a compile time string constant. -// It can be accessed via its `absl::string_view value` static member. -// It is guaranteed that the `string_view` returned has constant `.data()`, -// constant `.size()` and constant `value[i]` for all `0 <= i < .size()` -// -// The `T` is an opaque type. It is guaranteed that different string constants -// will have different values of `T`. This allows users to associate the string -// constant with other static state at compile time. -// -// Instances should be made using the `MakeStringConstant()` factory function -// below. -template <typename T> -struct StringConstant { - static constexpr absl::string_view value = T{}(); - constexpr absl::string_view operator()() const { return value; } - - // Check to be sure `view` points to constant data. - // Otherwise, it can't be constant evaluated. - static_assert(value.empty() || 2 * value[0] != 1, - "The input string_view must point to constant data."); -}; - -template <typename T> -constexpr absl::string_view StringConstant<T>::value; // NOLINT - -// Factory function for `StringConstant` instances. -// It supports callables that have a constexpr default constructor and a -// constexpr operator(). -// It must return an `absl::string_view` or `const char*` pointing to constant -// data. This is validated at compile time. -template <typename T> -constexpr StringConstant<T> MakeStringConstant(T) { - return {}; -} - -} // namespace strings_internal -ABSL_NAMESPACE_END -} // namespace absl - -#endif // ABSL_STRINGS_INTERNAL_STRING_CONSTANT_H_ |