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Diffstat (limited to 'third_party/abseil_cpp/absl/strings/internal/str_format/bind.h')
| -rw-r--r-- | third_party/abseil_cpp/absl/strings/internal/str_format/bind.h | 217 |
1 files changed, 0 insertions, 217 deletions
diff --git a/third_party/abseil_cpp/absl/strings/internal/str_format/bind.h b/third_party/abseil_cpp/absl/strings/internal/str_format/bind.h deleted file mode 100644 index 267cc0ef69..0000000000 --- a/third_party/abseil_cpp/absl/strings/internal/str_format/bind.h +++ /dev/null @@ -1,217 +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_STR_FORMAT_BIND_H_ -#define ABSL_STRINGS_INTERNAL_STR_FORMAT_BIND_H_ - -#include <array> -#include <cstdio> -#include <sstream> -#include <string> - -#include "absl/base/port.h" -#include "absl/strings/internal/str_format/arg.h" -#include "absl/strings/internal/str_format/checker.h" -#include "absl/strings/internal/str_format/parser.h" -#include "absl/types/span.h" - -namespace absl { -ABSL_NAMESPACE_BEGIN - -class UntypedFormatSpec; - -namespace str_format_internal { - -class BoundConversion : public FormatConversionSpecImpl { - public: - const FormatArgImpl* arg() const { return arg_; } - void set_arg(const FormatArgImpl* a) { arg_ = a; } - - private: - const FormatArgImpl* arg_; -}; - -// This is the type-erased class that the implementation uses. -class UntypedFormatSpecImpl { - public: - UntypedFormatSpecImpl() = delete; - - explicit UntypedFormatSpecImpl(string_view s) - : data_(s.data()), size_(s.size()) {} - explicit UntypedFormatSpecImpl( - const str_format_internal::ParsedFormatBase* pc) - : data_(pc), size_(~size_t{}) {} - - bool has_parsed_conversion() const { return size_ == ~size_t{}; } - - string_view str() const { - assert(!has_parsed_conversion()); - return string_view(static_cast<const char*>(data_), size_); - } - const str_format_internal::ParsedFormatBase* parsed_conversion() const { - assert(has_parsed_conversion()); - return static_cast<const str_format_internal::ParsedFormatBase*>(data_); - } - - template <typename T> - static const UntypedFormatSpecImpl& Extract(const T& s) { - return s.spec_; - } - - private: - const void* data_; - size_t size_; -}; - -template <typename T, FormatConversionCharSet...> -struct MakeDependent { - using type = T; -}; - -// Implicitly convertible from `const char*`, `string_view`, and the -// `ExtendedParsedFormat` type. This abstraction allows all format functions to -// operate on any without providing too many overloads. -template <FormatConversionCharSet... Args> -class FormatSpecTemplate - : public MakeDependent<UntypedFormatSpec, Args...>::type { - using Base = typename MakeDependent<UntypedFormatSpec, Args...>::type; - - public: -#ifdef ABSL_INTERNAL_ENABLE_FORMAT_CHECKER - - // Honeypot overload for when the string is not constexpr. - // We use the 'unavailable' attribute to give a better compiler error than - // just 'method is deleted'. - FormatSpecTemplate(...) // NOLINT - __attribute__((unavailable("Format string is not constexpr."))); - - // Honeypot overload for when the format is constexpr and invalid. - // We use the 'unavailable' attribute to give a better compiler error than - // just 'method is deleted'. - // To avoid checking the format twice, we just check that the format is - // constexpr. If is it valid, then the overload below will kick in. - // We add the template here to make this overload have lower priority. - template <typename = void> - FormatSpecTemplate(const char* s) // NOLINT - __attribute__(( - enable_if(str_format_internal::EnsureConstexpr(s), "constexpr trap"), - unavailable( - "Format specified does not match the arguments passed."))); - - template <typename T = void> - FormatSpecTemplate(string_view s) // NOLINT - __attribute__((enable_if(str_format_internal::EnsureConstexpr(s), - "constexpr trap"))) { - static_assert(sizeof(T*) == 0, - "Format specified does not match the arguments passed."); - } - - // Good format overload. - FormatSpecTemplate(const char* s) // NOLINT - __attribute__((enable_if(ValidFormatImpl<Args...>(s), "bad format trap"))) - : Base(s) {} - - FormatSpecTemplate(string_view s) // NOLINT - __attribute__((enable_if(ValidFormatImpl<Args...>(s), "bad format trap"))) - : Base(s) {} - -#else // ABSL_INTERNAL_ENABLE_FORMAT_CHECKER - - FormatSpecTemplate(const char* s) : Base(s) {} // NOLINT - FormatSpecTemplate(string_view s) : Base(s) {} // NOLINT - -#endif // ABSL_INTERNAL_ENABLE_FORMAT_CHECKER - - template < - FormatConversionCharSet... C, - typename = typename std::enable_if<sizeof...(C) == sizeof...(Args)>::type, - typename = typename std::enable_if<AllOf(Contains(Args, - C)...)>::type> - FormatSpecTemplate(const ExtendedParsedFormat<C...>& pc) // NOLINT - : Base(&pc) {} -}; - -class Streamable { - public: - Streamable(const UntypedFormatSpecImpl& format, - absl::Span<const FormatArgImpl> args) - : format_(format) { - if (args.size() <= ABSL_ARRAYSIZE(few_args_)) { - for (size_t i = 0; i < args.size(); ++i) { - few_args_[i] = args[i]; - } - args_ = absl::MakeSpan(few_args_, args.size()); - } else { - many_args_.assign(args.begin(), args.end()); - args_ = many_args_; - } - } - - std::ostream& Print(std::ostream& os) const; - - friend std::ostream& operator<<(std::ostream& os, const Streamable& l) { - return l.Print(os); - } - - private: - const UntypedFormatSpecImpl& format_; - absl::Span<const FormatArgImpl> args_; - // if args_.size() is 4 or less: - FormatArgImpl few_args_[4] = {FormatArgImpl(0), FormatArgImpl(0), - FormatArgImpl(0), FormatArgImpl(0)}; - // if args_.size() is more than 4: - std::vector<FormatArgImpl> many_args_; -}; - -// for testing -std::string Summarize(UntypedFormatSpecImpl format, - absl::Span<const FormatArgImpl> args); -bool BindWithPack(const UnboundConversion* props, - absl::Span<const FormatArgImpl> pack, BoundConversion* bound); - -bool FormatUntyped(FormatRawSinkImpl raw_sink, - UntypedFormatSpecImpl format, - absl::Span<const FormatArgImpl> args); - -std::string& AppendPack(std::string* out, UntypedFormatSpecImpl format, - absl::Span<const FormatArgImpl> args); - -std::string FormatPack(const UntypedFormatSpecImpl format, - absl::Span<const FormatArgImpl> args); - -int FprintF(std::FILE* output, UntypedFormatSpecImpl format, - absl::Span<const FormatArgImpl> args); -int SnprintF(char* output, size_t size, UntypedFormatSpecImpl format, - absl::Span<const FormatArgImpl> args); - -// Returned by Streamed(v). Converts via '%s' to the std::string created -// by std::ostream << v. -template <typename T> -class StreamedWrapper { - public: - explicit StreamedWrapper(const T& v) : v_(v) { } - - private: - template <typename S> - friend ArgConvertResult<FormatConversionCharSetInternal::s> FormatConvertImpl( - const StreamedWrapper<S>& v, FormatConversionSpecImpl conv, - FormatSinkImpl* out); - const T& v_; -}; - -} // namespace str_format_internal -ABSL_NAMESPACE_END -} // namespace absl - -#endif // ABSL_STRINGS_INTERNAL_STR_FORMAT_BIND_H_ |