diff options
Diffstat (limited to 'third_party/abseil_cpp/absl/flags/marshalling.cc')
| -rw-r--r-- | third_party/abseil_cpp/absl/flags/marshalling.cc | 241 |
1 files changed, 0 insertions, 241 deletions
diff --git a/third_party/abseil_cpp/absl/flags/marshalling.cc b/third_party/abseil_cpp/absl/flags/marshalling.cc deleted file mode 100644 index 81f9cebd6f..0000000000 --- a/third_party/abseil_cpp/absl/flags/marshalling.cc +++ /dev/null @@ -1,241 +0,0 @@ -// -// Copyright 2019 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. - -#include "absl/flags/marshalling.h" - -#include <stddef.h> - -#include <cmath> -#include <limits> -#include <string> -#include <type_traits> -#include <vector> - -#include "absl/base/config.h" -#include "absl/base/log_severity.h" -#include "absl/base/macros.h" -#include "absl/strings/ascii.h" -#include "absl/strings/match.h" -#include "absl/strings/numbers.h" -#include "absl/strings/str_cat.h" -#include "absl/strings/str_format.h" -#include "absl/strings/str_join.h" -#include "absl/strings/str_split.h" -#include "absl/strings/string_view.h" - -namespace absl { -ABSL_NAMESPACE_BEGIN -namespace flags_internal { - -// -------------------------------------------------------------------- -// AbslParseFlag specializations for boolean type. - -bool AbslParseFlag(absl::string_view text, bool* dst, std::string*) { - const char* kTrue[] = {"1", "t", "true", "y", "yes"}; - const char* kFalse[] = {"0", "f", "false", "n", "no"}; - static_assert(sizeof(kTrue) == sizeof(kFalse), "true_false_equal"); - - text = absl::StripAsciiWhitespace(text); - - for (size_t i = 0; i < ABSL_ARRAYSIZE(kTrue); ++i) { - if (absl::EqualsIgnoreCase(text, kTrue[i])) { - *dst = true; - return true; - } else if (absl::EqualsIgnoreCase(text, kFalse[i])) { - *dst = false; - return true; - } - } - return false; // didn't match a legal input -} - -// -------------------------------------------------------------------- -// AbslParseFlag for integral types. - -// Return the base to use for parsing text as an integer. Leading 0x -// puts us in base 16. But leading 0 does not put us in base 8. It -// caused too many bugs when we had that behavior. -static int NumericBase(absl::string_view text) { - const bool hex = (text.size() >= 2 && text[0] == '0' && - (text[1] == 'x' || text[1] == 'X')); - return hex ? 16 : 10; -} - -template <typename IntType> -inline bool ParseFlagImpl(absl::string_view text, IntType& dst) { - text = absl::StripAsciiWhitespace(text); - - return absl::numbers_internal::safe_strtoi_base(text, &dst, - NumericBase(text)); -} - -bool AbslParseFlag(absl::string_view text, short* dst, std::string*) { - int val; - if (!ParseFlagImpl(text, val)) return false; - if (static_cast<short>(val) != val) // worked, but number out of range - return false; - *dst = static_cast<short>(val); - return true; -} - -bool AbslParseFlag(absl::string_view text, unsigned short* dst, std::string*) { - unsigned int val; - if (!ParseFlagImpl(text, val)) return false; - if (static_cast<unsigned short>(val) != - val) // worked, but number out of range - return false; - *dst = static_cast<unsigned short>(val); - return true; -} - -bool AbslParseFlag(absl::string_view text, int* dst, std::string*) { - return ParseFlagImpl(text, *dst); -} - -bool AbslParseFlag(absl::string_view text, unsigned int* dst, std::string*) { - return ParseFlagImpl(text, *dst); -} - -bool AbslParseFlag(absl::string_view text, long* dst, std::string*) { - return ParseFlagImpl(text, *dst); -} - -bool AbslParseFlag(absl::string_view text, unsigned long* dst, std::string*) { - return ParseFlagImpl(text, *dst); -} - -bool AbslParseFlag(absl::string_view text, long long* dst, std::string*) { - return ParseFlagImpl(text, *dst); -} - -bool AbslParseFlag(absl::string_view text, unsigned long long* dst, - std::string*) { - return ParseFlagImpl(text, *dst); -} - -// -------------------------------------------------------------------- -// AbslParseFlag for floating point types. - -bool AbslParseFlag(absl::string_view text, float* dst, std::string*) { - return absl::SimpleAtof(text, dst); -} - -bool AbslParseFlag(absl::string_view text, double* dst, std::string*) { - return absl::SimpleAtod(text, dst); -} - -// -------------------------------------------------------------------- -// AbslParseFlag for strings. - -bool AbslParseFlag(absl::string_view text, std::string* dst, std::string*) { - dst->assign(text.data(), text.size()); - return true; -} - -// -------------------------------------------------------------------- -// AbslParseFlag for vector of strings. - -bool AbslParseFlag(absl::string_view text, std::vector<std::string>* dst, - std::string*) { - // An empty flag value corresponds to an empty vector, not a vector - // with a single, empty std::string. - if (text.empty()) { - dst->clear(); - return true; - } - *dst = absl::StrSplit(text, ',', absl::AllowEmpty()); - return true; -} - -// -------------------------------------------------------------------- -// AbslUnparseFlag specializations for various builtin flag types. - -std::string Unparse(bool v) { return v ? "true" : "false"; } -std::string Unparse(short v) { return absl::StrCat(v); } -std::string Unparse(unsigned short v) { return absl::StrCat(v); } -std::string Unparse(int v) { return absl::StrCat(v); } -std::string Unparse(unsigned int v) { return absl::StrCat(v); } -std::string Unparse(long v) { return absl::StrCat(v); } -std::string Unparse(unsigned long v) { return absl::StrCat(v); } -std::string Unparse(long long v) { return absl::StrCat(v); } -std::string Unparse(unsigned long long v) { return absl::StrCat(v); } -template <typename T> -std::string UnparseFloatingPointVal(T v) { - // digits10 is guaranteed to roundtrip correctly in string -> value -> string - // conversions, but may not be enough to represent all the values correctly. - std::string digit10_str = - absl::StrFormat("%.*g", std::numeric_limits<T>::digits10, v); - if (std::isnan(v) || std::isinf(v)) return digit10_str; - - T roundtrip_val = 0; - std::string err; - if (absl::ParseFlag(digit10_str, &roundtrip_val, &err) && - roundtrip_val == v) { - return digit10_str; - } - - // max_digits10 is the number of base-10 digits that are necessary to uniquely - // represent all distinct values. - return absl::StrFormat("%.*g", std::numeric_limits<T>::max_digits10, v); -} -std::string Unparse(float v) { return UnparseFloatingPointVal(v); } -std::string Unparse(double v) { return UnparseFloatingPointVal(v); } -std::string AbslUnparseFlag(absl::string_view v) { return std::string(v); } -std::string AbslUnparseFlag(const std::vector<std::string>& v) { - return absl::StrJoin(v, ","); -} - -} // namespace flags_internal - -bool AbslParseFlag(absl::string_view text, absl::LogSeverity* dst, - std::string* err) { - text = absl::StripAsciiWhitespace(text); - if (text.empty()) { - *err = "no value provided"; - return false; - } - if (text.front() == 'k' || text.front() == 'K') text.remove_prefix(1); - if (absl::EqualsIgnoreCase(text, "info")) { - *dst = absl::LogSeverity::kInfo; - return true; - } - if (absl::EqualsIgnoreCase(text, "warning")) { - *dst = absl::LogSeverity::kWarning; - return true; - } - if (absl::EqualsIgnoreCase(text, "error")) { - *dst = absl::LogSeverity::kError; - return true; - } - if (absl::EqualsIgnoreCase(text, "fatal")) { - *dst = absl::LogSeverity::kFatal; - return true; - } - std::underlying_type<absl::LogSeverity>::type numeric_value; - if (absl::ParseFlag(text, &numeric_value, err)) { - *dst = static_cast<absl::LogSeverity>(numeric_value); - return true; - } - *err = "only integers and absl::LogSeverity enumerators are accepted"; - return false; -} - -std::string AbslUnparseFlag(absl::LogSeverity v) { - if (v == absl::NormalizeLogSeverity(v)) return absl::LogSeverityName(v); - return absl::UnparseFlag(static_cast<int>(v)); -} - -ABSL_NAMESPACE_END -} // namespace absl |