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Diffstat (limited to 'third_party/abseil_cpp/absl/strings/charconv.h')
| -rw-r--r-- | third_party/abseil_cpp/absl/strings/charconv.h | 119 |
1 files changed, 0 insertions, 119 deletions
diff --git a/third_party/abseil_cpp/absl/strings/charconv.h b/third_party/abseil_cpp/absl/strings/charconv.h deleted file mode 100644 index e04be32f95..0000000000 --- a/third_party/abseil_cpp/absl/strings/charconv.h +++ /dev/null @@ -1,119 +0,0 @@ -// Copyright 2018 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_CHARCONV_H_ -#define ABSL_STRINGS_CHARCONV_H_ - -#include <system_error> // NOLINT(build/c++11) - -#include "absl/base/config.h" - -namespace absl { -ABSL_NAMESPACE_BEGIN - -// Workalike compatibilty version of std::chars_format from C++17. -// -// This is an bitfield enumerator which can be passed to absl::from_chars to -// configure the string-to-float conversion. -enum class chars_format { - scientific = 1, - fixed = 2, - hex = 4, - general = fixed | scientific, -}; - -// The return result of a string-to-number conversion. -// -// `ec` will be set to `invalid_argument` if a well-formed number was not found -// at the start of the input range, `result_out_of_range` if a well-formed -// number was found, but it was out of the representable range of the requested -// type, or to std::errc() otherwise. -// -// If a well-formed number was found, `ptr` is set to one past the sequence of -// characters that were successfully parsed. If none was found, `ptr` is set -// to the `first` argument to from_chars. -struct from_chars_result { - const char* ptr; - std::errc ec; -}; - -// Workalike compatibilty version of std::from_chars from C++17. Currently -// this only supports the `double` and `float` types. -// -// This interface incorporates the proposed resolutions for library issues -// DR 3080 and DR 3081. If these are adopted with different wording, -// Abseil's behavior will change to match the standard. (The behavior most -// likely to change is for DR 3081, which says what `value` will be set to in -// the case of overflow and underflow. Code that wants to avoid possible -// breaking changes in this area should not depend on `value` when the returned -// from_chars_result indicates a range error.) -// -// Searches the range [first, last) for the longest matching pattern beginning -// at `first` that represents a floating point number. If one is found, store -// the result in `value`. -// -// The matching pattern format is almost the same as that of strtod(), except -// that C locale is not respected, and an initial '+' character in the input -// range will never be matched. -// -// If `fmt` is set, it must be one of the enumerator values of the chars_format. -// (This is despite the fact that chars_format is a bitmask type.) If set to -// `scientific`, a matching number must contain an exponent. If set to `fixed`, -// then an exponent will never match. (For example, the string "1e5" will be -// parsed as "1".) If set to `hex`, then a hexadecimal float is parsed in the -// format that strtod() accepts, except that a "0x" prefix is NOT matched. -// (In particular, in `hex` mode, the input "0xff" results in the largest -// matching pattern "0".) -absl::from_chars_result from_chars(const char* first, const char* last, - double& value, // NOLINT - chars_format fmt = chars_format::general); - -absl::from_chars_result from_chars(const char* first, const char* last, - float& value, // NOLINT - chars_format fmt = chars_format::general); - -// std::chars_format is specified as a bitmask type, which means the following -// operations must be provided: -inline constexpr chars_format operator&(chars_format lhs, chars_format rhs) { - return static_cast<chars_format>(static_cast<int>(lhs) & - static_cast<int>(rhs)); -} -inline constexpr chars_format operator|(chars_format lhs, chars_format rhs) { - return static_cast<chars_format>(static_cast<int>(lhs) | - static_cast<int>(rhs)); -} -inline constexpr chars_format operator^(chars_format lhs, chars_format rhs) { - return static_cast<chars_format>(static_cast<int>(lhs) ^ - static_cast<int>(rhs)); -} -inline constexpr chars_format operator~(chars_format arg) { - return static_cast<chars_format>(~static_cast<int>(arg)); -} -inline chars_format& operator&=(chars_format& lhs, chars_format rhs) { - lhs = lhs & rhs; - return lhs; -} -inline chars_format& operator|=(chars_format& lhs, chars_format rhs) { - lhs = lhs | rhs; - return lhs; -} -inline chars_format& operator^=(chars_format& lhs, chars_format rhs) { - lhs = lhs ^ rhs; - return lhs; -} - -ABSL_NAMESPACE_END -} // namespace absl - -#endif // ABSL_STRINGS_CHARCONV_H_ |