diff options
Diffstat (limited to 'chromium/third_party/abseil-cpp/absl/strings')
15 files changed, 603 insertions, 188 deletions
diff --git a/chromium/third_party/abseil-cpp/absl/strings/cord.cc b/chromium/third_party/abseil-cpp/absl/strings/cord.cc index 1ddd6aec91a..68f5398791d 100644 --- a/chromium/third_party/abseil-cpp/absl/strings/cord.cc +++ b/chromium/third_party/abseil-cpp/absl/strings/cord.cc @@ -705,6 +705,37 @@ Cord::Cord(absl::string_view src) { } } +template <typename T, Cord::EnableIfString<T>> +Cord::Cord(T&& src) { + if ( + // String is short: copy data to avoid external block overhead. + src.size() <= kMaxBytesToCopy || + // String is wasteful: copy data to avoid pinning too much unused memory. + src.size() < src.capacity() / 2 + ) { + if (src.size() <= InlineRep::kMaxInline) { + contents_.set_data(src.data(), src.size(), false); + } else { + contents_.set_tree(NewTree(src.data(), src.size(), 0)); + } + } else { + struct StringReleaser { + void operator()(absl::string_view /* data */) {} + std::string data; + }; + const absl::string_view original_data = src; + CordRepExternal* rep = + static_cast<CordRepExternal*>(absl::cord_internal::NewExternalRep( + original_data, StringReleaser{std::move(src)})); + // Moving src may have invalidated its data pointer, so adjust it. + rep->base = + static_cast<StringReleaser*>(GetExternalReleaser(rep))->data.data(); + contents_.set_tree(rep); + } +} + +template Cord::Cord(std::string&& src); + // The destruction code is separate so that the compiler can determine // that it does not need to call the destructor on a moved-from Cord. void Cord::DestroyCordSlow() { @@ -742,6 +773,18 @@ Cord& Cord::operator=(absl::string_view src) { return *this; } +template <typename T, Cord::EnableIfString<T>> +Cord& Cord::operator=(T&& src) { + if (src.size() <= kMaxBytesToCopy) { + *this = absl::string_view(src); + } else { + *this = Cord(std::move(src)); + } + return *this; +} + +template Cord& Cord::operator=(std::string&& src); + // TODO(sanjay): Move to Cord::InlineRep section of file. For now, // we keep it here to make diffs easier. void Cord::InlineRep::AppendArray(const char* src_data, size_t src_size) { @@ -853,6 +896,17 @@ void Cord::Append(const Cord& src) { AppendImpl(src); } void Cord::Append(Cord&& src) { AppendImpl(std::move(src)); } +template <typename T, Cord::EnableIfString<T>> +void Cord::Append(T&& src) { + if (src.size() <= kMaxBytesToCopy) { + Append(absl::string_view(src)); + } else { + Append(Cord(std::move(src))); + } +} + +template void Cord::Append(std::string&& src); + void Cord::Prepend(const Cord& src) { CordRep* src_tree = src.contents_.tree(); if (src_tree != nullptr) { @@ -882,6 +936,17 @@ void Cord::Prepend(absl::string_view src) { } } +template <typename T, Cord::EnableIfString<T>> +inline void Cord::Prepend(T&& src) { + if (src.size() <= kMaxBytesToCopy) { + Prepend(absl::string_view(src)); + } else { + Prepend(Cord(std::move(src))); + } +} + +template void Cord::Prepend(std::string&& src); + static CordRep* RemovePrefixFrom(CordRep* node, size_t n) { if (n >= node->length) return nullptr; if (n == 0) return Ref(node); diff --git a/chromium/third_party/abseil-cpp/absl/strings/cord.h b/chromium/third_party/abseil-cpp/absl/strings/cord.h index 3be8d7d875f..8580d80315c 100644 --- a/chromium/third_party/abseil-cpp/absl/strings/cord.h +++ b/chromium/third_party/abseil-cpp/absl/strings/cord.h @@ -147,11 +147,8 @@ class Cord { // Creates a Cord from a `std::string&&` rvalue. These constructors are // templated to avoid ambiguities for types that are convertible to both // `absl::string_view` and `std::string`, such as `const char*`. - // - // Note that these functions reserve the right to use the `string&&`'s - // memory and that they will do so in the future. template <typename T, EnableIfString<T> = 0> - explicit Cord(T&& src) : Cord(absl::string_view(src)) {} + explicit Cord(T&& src); template <typename T, EnableIfString<T> = 0> Cord& operator=(T&& src); @@ -860,16 +857,16 @@ ExternalRepReleaserPair NewExternalWithUninitializedReleaser( struct Rank1 {}; struct Rank0 : Rank1 {}; -template <typename Releaser, typename = ::absl::base_internal::InvokeT< +template <typename Releaser, typename = ::absl::base_internal::invoke_result_t< Releaser, absl::string_view>> void InvokeReleaser(Rank0, Releaser&& releaser, absl::string_view data) { - ::absl::base_internal::Invoke(std::forward<Releaser>(releaser), data); + ::absl::base_internal::invoke(std::forward<Releaser>(releaser), data); } template <typename Releaser, - typename = ::absl::base_internal::InvokeT<Releaser>> + typename = ::absl::base_internal::invoke_result_t<Releaser>> void InvokeReleaser(Rank1, Releaser&& releaser, absl::string_view) { - ::absl::base_internal::Invoke(std::forward<Releaser>(releaser)); + ::absl::base_internal::invoke(std::forward<Releaser>(releaser)); } // Creates a new `CordRep` that owns `data` and `releaser` and returns a pointer @@ -1048,11 +1045,8 @@ inline Cord& Cord::operator=(Cord&& x) noexcept { return *this; } -template <typename T, Cord::EnableIfString<T>> -inline Cord& Cord::operator=(T&& src) { - *this = absl::string_view(src); - return *this; -} +extern template Cord::Cord(std::string&& src); +extern template Cord& Cord::operator=(std::string&& src); inline size_t Cord::size() const { // Length is 1st field in str.rep_ @@ -1098,19 +1092,8 @@ inline void Cord::Append(absl::string_view src) { contents_.AppendArray(src.data(), src.size()); } -template <typename T, Cord::EnableIfString<T>> -inline void Cord::Append(T&& src) { - // Note that this function reserves the right to reuse the `string&&`'s - // memory and that it will do so in the future. - Append(absl::string_view(src)); -} - -template <typename T, Cord::EnableIfString<T>> -inline void Cord::Prepend(T&& src) { - // Note that this function reserves the right to reuse the `string&&`'s - // memory and that it will do so in the future. - Prepend(absl::string_view(src)); -} +extern template void Cord::Append(std::string&& src); +extern template void Cord::Prepend(std::string&& src); inline int Cord::Compare(const Cord& rhs) const { if (!contents_.is_tree() && !rhs.contents_.is_tree()) { diff --git a/chromium/third_party/abseil-cpp/absl/strings/internal/str_format/arg.cc b/chromium/third_party/abseil-cpp/absl/strings/internal/str_format/arg.cc index 02646addec1..9feb2248793 100644 --- a/chromium/third_party/abseil-cpp/absl/strings/internal/str_format/arg.cc +++ b/chromium/third_party/abseil-cpp/absl/strings/internal/str_format/arg.cc @@ -267,38 +267,42 @@ bool ConvertIntArg(T v, const FormatConversionSpecImpl conv, using U = typename MakeUnsigned<T>::type; IntDigits as_digits; - switch (conv.conversion_char()) { - case FormatConversionCharInternal::c: + // This odd casting is due to a bug in -Wswitch behavior in gcc49 which causes + // it to complain about a switch/case type mismatch, even though both are + // FormatConverionChar. Likely this is because at this point + // FormatConversionChar is declared, but not defined. + switch (static_cast<uint8_t>(conv.conversion_char())) { + case static_cast<uint8_t>(FormatConversionCharInternal::c): return ConvertCharImpl(static_cast<unsigned char>(v), conv, sink); - case FormatConversionCharInternal::o: + case static_cast<uint8_t>(FormatConversionCharInternal::o): as_digits.PrintAsOct(static_cast<U>(v)); break; - case FormatConversionCharInternal::x: + case static_cast<uint8_t>(FormatConversionCharInternal::x): as_digits.PrintAsHexLower(static_cast<U>(v)); break; - case FormatConversionCharInternal::X: + case static_cast<uint8_t>(FormatConversionCharInternal::X): as_digits.PrintAsHexUpper(static_cast<U>(v)); break; - case FormatConversionCharInternal::u: + case static_cast<uint8_t>(FormatConversionCharInternal::u): as_digits.PrintAsDec(static_cast<U>(v)); break; - case FormatConversionCharInternal::d: - case FormatConversionCharInternal::i: + case static_cast<uint8_t>(FormatConversionCharInternal::d): + case static_cast<uint8_t>(FormatConversionCharInternal::i): as_digits.PrintAsDec(v); break; - case FormatConversionCharInternal::a: - case FormatConversionCharInternal::e: - case FormatConversionCharInternal::f: - case FormatConversionCharInternal::g: - case FormatConversionCharInternal::A: - case FormatConversionCharInternal::E: - case FormatConversionCharInternal::F: - case FormatConversionCharInternal::G: + case static_cast<uint8_t>(FormatConversionCharInternal::a): + case static_cast<uint8_t>(FormatConversionCharInternal::e): + case static_cast<uint8_t>(FormatConversionCharInternal::f): + case static_cast<uint8_t>(FormatConversionCharInternal::g): + case static_cast<uint8_t>(FormatConversionCharInternal::A): + case static_cast<uint8_t>(FormatConversionCharInternal::E): + case static_cast<uint8_t>(FormatConversionCharInternal::F): + case static_cast<uint8_t>(FormatConversionCharInternal::G): return ConvertFloatImpl(static_cast<double>(v), conv, sink); default: diff --git a/chromium/third_party/abseil-cpp/absl/strings/internal/str_format/arg.h b/chromium/third_party/abseil-cpp/absl/strings/internal/str_format/arg.h index 8f79948bd91..3dbc1526d06 100644 --- a/chromium/third_party/abseil-cpp/absl/strings/internal/str_format/arg.h +++ b/chromium/third_party/abseil-cpp/absl/strings/internal/str_format/arg.h @@ -25,6 +25,10 @@ class Cord; class FormatCountCapture; class FormatSink; +template <absl::FormatConversionCharSet C> +struct FormatConvertResult; +class FormatConversionSpec; + namespace str_format_internal { template <typename T, typename = void> @@ -37,6 +41,22 @@ struct HasUserDefinedConvert<T, void_t<decltype(AbslFormatConvert( std::declval<FormatSink*>()))>> : std::true_type {}; +void AbslFormatConvert(); // Stops the lexical name lookup +template <typename T> +auto FormatConvertImpl(const T& v, FormatConversionSpecImpl conv, + FormatSinkImpl* sink) + -> decltype(AbslFormatConvert(v, + std::declval<const FormatConversionSpec&>(), + std::declval<FormatSink*>())) { + using FormatConversionSpecT = + absl::enable_if_t<sizeof(const T& (*)()) != 0, FormatConversionSpec>; + using FormatSinkT = + absl::enable_if_t<sizeof(const T& (*)()) != 0, FormatSink>; + auto fcs = conv.Wrap<FormatConversionSpecT>(); + auto fs = sink->Wrap<FormatSinkT>(); + return AbslFormatConvert(v, fcs, &fs); +} + template <typename T> class StreamedWrapper; @@ -44,6 +64,13 @@ class StreamedWrapper; // then convert it, appending to `sink` and return `true`. // Otherwise fail and return `false`. +// AbslFormatConvert(v, conv, sink) is intended to be found by ADL on 'v' +// as an extension mechanism. These FormatConvertImpl functions are the default +// implementations. +// The ADL search is augmented via the 'Sink*' parameter, which also +// serves as a disambiguator to reject possible unintended 'AbslFormatConvert' +// functions in the namespaces associated with 'v'. + // Raw pointers. struct VoidPtr { VoidPtr() = default; @@ -60,6 +87,11 @@ struct ArgConvertResult { }; template <FormatConversionCharSet C> +constexpr FormatConversionCharSet ExtractCharSet(FormatConvertResult<C>) { + return C; +} + +template <FormatConversionCharSet C> constexpr FormatConversionCharSet ExtractCharSet(ArgConvertResult<C>) { return C; } diff --git a/chromium/third_party/abseil-cpp/absl/strings/internal/str_format/arg_test.cc b/chromium/third_party/abseil-cpp/absl/strings/internal/str_format/arg_test.cc index 37e5b7545f8..f53fd6bd145 100644 --- a/chromium/third_party/abseil-cpp/absl/strings/internal/str_format/arg_test.cc +++ b/chromium/third_party/abseil-cpp/absl/strings/internal/str_format/arg_test.cc @@ -23,8 +23,17 @@ class FormatArgImplTest : public ::testing::Test { enum Color { kRed, kGreen, kBlue }; static const char *hi() { return "hi"; } + + struct X {}; + + X x_; }; +inline FormatConvertResult<FormatConversionCharSet{}> AbslFormatConvert( + const FormatArgImplTest::X &, const FormatConversionSpec &, FormatSink *) { + return {false}; +} + TEST_F(FormatArgImplTest, ToInt) { int out = 0; EXPECT_TRUE(FormatArgImplFriend::ToInt(FormatArgImpl(1), &out)); @@ -59,6 +68,7 @@ TEST_F(FormatArgImplTest, ToInt) { FormatArgImpl(static_cast<int *>(nullptr)), &out)); EXPECT_FALSE(FormatArgImplFriend::ToInt(FormatArgImpl(hi()), &out)); EXPECT_FALSE(FormatArgImplFriend::ToInt(FormatArgImpl("hi"), &out)); + EXPECT_FALSE(FormatArgImplFriend::ToInt(FormatArgImpl(x_), &out)); EXPECT_TRUE(FormatArgImplFriend::ToInt(FormatArgImpl(kBlue), &out)); EXPECT_EQ(2, out); } @@ -96,8 +106,8 @@ TEST_F(FormatArgImplTest, WorksWithCharArraysOfUnknownSize) { std::string s; FormatSinkImpl sink(&s); FormatConversionSpecImpl conv; - FormatConversionSpecImplFriend::SetConversionChar(FormatConversionChar::s, - &conv); + FormatConversionSpecImplFriend::SetConversionChar( + FormatConversionCharInternal::s, &conv); FormatConversionSpecImplFriend::SetFlags(Flags(), &conv); FormatConversionSpecImplFriend::SetWidth(-1, &conv); FormatConversionSpecImplFriend::SetPrecision(-1, &conv); diff --git a/chromium/third_party/abseil-cpp/absl/strings/internal/str_format/checker_test.cc b/chromium/third_party/abseil-cpp/absl/strings/internal/str_format/checker_test.cc index 233481747bf..a76d70b0586 100644 --- a/chromium/third_party/abseil-cpp/absl/strings/internal/str_format/checker_test.cc +++ b/chromium/third_party/abseil-cpp/absl/strings/internal/str_format/checker_test.cc @@ -11,13 +11,13 @@ namespace { std::string ConvToString(FormatConversionCharSet conv) { std::string out; -#define CONV_SET_CASE(c) \ - if (Contains(conv, FormatConversionCharSet::c)) { \ - out += #c; \ +#define CONV_SET_CASE(c) \ + if (Contains(conv, FormatConversionCharSetInternal::c)) { \ + out += #c; \ } ABSL_INTERNAL_CONVERSION_CHARS_EXPAND_(CONV_SET_CASE, ) #undef CONV_SET_CASE - if (Contains(conv, FormatConversionCharSet::kStar)) { + if (Contains(conv, FormatConversionCharSetInternal::kStar)) { out += "*"; } return out; diff --git a/chromium/third_party/abseil-cpp/absl/strings/internal/str_format/convert_test.cc b/chromium/third_party/abseil-cpp/absl/strings/internal/str_format/convert_test.cc index 20c6229fcb3..0e8535c27b7 100644 --- a/chromium/third_party/abseil-cpp/absl/strings/internal/str_format/convert_test.cc +++ b/chromium/third_party/abseil-cpp/absl/strings/internal/str_format/convert_test.cc @@ -764,6 +764,12 @@ TEST_F(FormatConvertTest, LongDouble) { } } + // Regression tests + // + // Using a string literal because not all platforms support hex literals or it + // might be out of range. + doubles.push_back(std::strtold("-0xf.ffffffb5feafffbp-16324L", nullptr)); + for (const char *fmt : kFormats) { for (char f : {'f', 'F', // 'g', 'G', // diff --git a/chromium/third_party/abseil-cpp/absl/strings/internal/str_format/extension.cc b/chromium/third_party/abseil-cpp/absl/strings/internal/str_format/extension.cc index 2e5bc2ce0be..bb0d96cf321 100644 --- a/chromium/third_party/abseil-cpp/absl/strings/internal/str_format/extension.cc +++ b/chromium/third_party/abseil-cpp/absl/strings/internal/str_format/extension.cc @@ -33,16 +33,40 @@ std::string Flags::ToString() const { return s; } -bool FormatSinkImpl::PutPaddedString(string_view v, int w, int p, bool l) { +#define ABSL_INTERNAL_X_VAL(id) \ + constexpr absl::FormatConversionChar FormatConversionCharInternal::id; +ABSL_INTERNAL_CONVERSION_CHARS_EXPAND_(ABSL_INTERNAL_X_VAL, ) +#undef ABSL_INTERNAL_X_VAL +// NOLINTNEXTLINE(readability-redundant-declaration) +constexpr absl::FormatConversionChar FormatConversionCharInternal::kNone; + +#define ABSL_INTERNAL_CHAR_SET_CASE(c) \ + constexpr FormatConversionCharSet FormatConversionCharSetInternal::c; +ABSL_INTERNAL_CONVERSION_CHARS_EXPAND_(ABSL_INTERNAL_CHAR_SET_CASE, ) +#undef ABSL_INTERNAL_CHAR_SET_CASE + +// NOLINTNEXTLINE(readability-redundant-declaration) +constexpr FormatConversionCharSet FormatConversionCharSetInternal::kStar; +// NOLINTNEXTLINE(readability-redundant-declaration) +constexpr FormatConversionCharSet FormatConversionCharSetInternal::kIntegral; +// NOLINTNEXTLINE(readability-redundant-declaration) +constexpr FormatConversionCharSet FormatConversionCharSetInternal::kFloating; +// NOLINTNEXTLINE(readability-redundant-declaration) +constexpr FormatConversionCharSet FormatConversionCharSetInternal::kNumeric; +// NOLINTNEXTLINE(readability-redundant-declaration) +constexpr FormatConversionCharSet FormatConversionCharSetInternal::kPointer; + +bool FormatSinkImpl::PutPaddedString(string_view value, int width, + int precision, bool left) { size_t space_remaining = 0; - if (w >= 0) space_remaining = w; - size_t n = v.size(); - if (p >= 0) n = std::min(n, static_cast<size_t>(p)); - string_view shown(v.data(), n); + if (width >= 0) space_remaining = width; + size_t n = value.size(); + if (precision >= 0) n = std::min(n, static_cast<size_t>(precision)); + string_view shown(value.data(), n); space_remaining = Excess(shown.size(), space_remaining); - if (!l) Append(space_remaining, ' '); + if (!left) Append(space_remaining, ' '); Append(shown); - if (l) Append(space_remaining, ' '); + if (left) Append(space_remaining, ' '); return true; } diff --git a/chromium/third_party/abseil-cpp/absl/strings/internal/str_format/extension.h b/chromium/third_party/abseil-cpp/absl/strings/internal/str_format/extension.h index 36e70646d7d..a9b9e137deb 100644 --- a/chromium/third_party/abseil-cpp/absl/strings/internal/str_format/extension.h +++ b/chromium/third_party/abseil-cpp/absl/strings/internal/str_format/extension.h @@ -31,9 +31,10 @@ namespace absl { ABSL_NAMESPACE_BEGIN -namespace str_format_internal { -enum class FormatConversionCharSet : uint64_t; enum class FormatConversionChar : uint8_t; +enum class FormatConversionCharSet : uint64_t; + +namespace str_format_internal { class FormatRawSinkImpl { public: @@ -106,7 +107,7 @@ class FormatSinkImpl { size_t size() const { return size_; } // Put 'v' to 'sink' with specified width, precision, and left flag. - bool PutPaddedString(string_view v, int w, int p, bool l); + bool PutPaddedString(string_view v, int width, int precision, bool left); template <typename T> T Wrap() { @@ -360,14 +361,12 @@ struct FormatConversionCharSetInternal { static constexpr FormatConversionCharSet kStar = FormatConversionCharToConvValue('*'); - // Some predefined values (TODO(matthewbr), delete any that are unused). static constexpr FormatConversionCharSet kIntegral = FormatConversionCharSetUnion(d, i, u, o, x, X); static constexpr FormatConversionCharSet kFloating = FormatConversionCharSetUnion(a, e, f, g, A, E, F, G); static constexpr FormatConversionCharSet kNumeric = FormatConversionCharSetUnion(kIntegral, kFloating); - static constexpr FormatConversionCharSet kString = s; static constexpr FormatConversionCharSet kPointer = p; }; @@ -420,81 +419,6 @@ inline size_t Excess(size_t used, size_t capacity) { return used < capacity ? capacity - used : 0; } -class FormatConversionSpec { - public: - // Width and precison are not specified, no flags are set. - bool is_basic() const { return impl_.is_basic(); } - bool has_left_flag() const { return impl_.has_left_flag(); } - bool has_show_pos_flag() const { return impl_.has_show_pos_flag(); } - bool has_sign_col_flag() const { return impl_.has_sign_col_flag(); } - bool has_alt_flag() const { return impl_.has_alt_flag(); } - bool has_zero_flag() const { return impl_.has_zero_flag(); } - - FormatConversionChar conversion_char() const { - return impl_.conversion_char(); - } - - // Returns the specified width. If width is unspecfied, it returns a negative - // value. - int width() const { return impl_.width(); } - // Returns the specified precision. If precision is unspecfied, it returns a - // negative value. - int precision() const { return impl_.precision(); } - - private: - explicit FormatConversionSpec( - str_format_internal::FormatConversionSpecImpl impl) - : impl_(impl) {} - - friend str_format_internal::FormatConversionSpecImpl; - - absl::str_format_internal::FormatConversionSpecImpl impl_; -}; - -// clang-format off -enum class FormatConversionChar : uint8_t { - c, s, // text - d, i, o, u, x, X, // int - f, F, e, E, g, G, a, A, // float - n, p // misc -}; -// clang-format on - -enum class FormatConversionCharSet : uint64_t { - // text - c = str_format_internal::FormatConversionCharToConvInt('c'), - s = str_format_internal::FormatConversionCharToConvInt('s'), - // integer - d = str_format_internal::FormatConversionCharToConvInt('d'), - i = str_format_internal::FormatConversionCharToConvInt('i'), - o = str_format_internal::FormatConversionCharToConvInt('o'), - u = str_format_internal::FormatConversionCharToConvInt('u'), - x = str_format_internal::FormatConversionCharToConvInt('x'), - X = str_format_internal::FormatConversionCharToConvInt('X'), - // Float - f = str_format_internal::FormatConversionCharToConvInt('f'), - F = str_format_internal::FormatConversionCharToConvInt('F'), - e = str_format_internal::FormatConversionCharToConvInt('e'), - E = str_format_internal::FormatConversionCharToConvInt('E'), - g = str_format_internal::FormatConversionCharToConvInt('g'), - G = str_format_internal::FormatConversionCharToConvInt('G'), - a = str_format_internal::FormatConversionCharToConvInt('a'), - A = str_format_internal::FormatConversionCharToConvInt('A'), - // misc - n = str_format_internal::FormatConversionCharToConvInt('n'), - p = str_format_internal::FormatConversionCharToConvInt('p'), - - // Used for width/precision '*' specification. - kStar = str_format_internal::FormatConversionCharToConvInt('*'), - - // Some predefined values: - kIntegral = d | i | u | o | x | X, - kFloating = a | e | f | g | A | E | F | G, - kNumeric = kIntegral | kFloating, - kString = s, - kPointer = p, -}; - } // namespace str_format_internal ABSL_NAMESPACE_END diff --git a/chromium/third_party/abseil-cpp/absl/strings/internal/str_format/extension_test.cc b/chromium/third_party/abseil-cpp/absl/strings/internal/str_format/extension_test.cc index 0a023f9c033..1c93fdb1c75 100644 --- a/chromium/third_party/abseil-cpp/absl/strings/internal/str_format/extension_test.cc +++ b/chromium/third_party/abseil-cpp/absl/strings/internal/str_format/extension_test.cc @@ -80,4 +80,19 @@ TEST(FormatExtensionTest, SinkAppendChars) { EXPECT_EQ(actual, expected); } } + +TEST(FormatExtensionTest, VerifyEnumEquality) { +#define X_VAL(id) \ + EXPECT_EQ(absl::FormatConversionChar::id, \ + absl::str_format_internal::FormatConversionCharInternal::id); + ABSL_INTERNAL_CONVERSION_CHARS_EXPAND_(X_VAL, ); +#undef X_VAL + +#define X_VAL(id) \ + EXPECT_EQ(absl::FormatConversionCharSet::id, \ + absl::str_format_internal::FormatConversionCharSetInternal::id); + ABSL_INTERNAL_CONVERSION_CHARS_EXPAND_(X_VAL, ); +#undef X_VAL +} + } // namespace diff --git a/chromium/third_party/abseil-cpp/absl/strings/internal/str_format/float_conversion.cc b/chromium/third_party/abseil-cpp/absl/strings/internal/str_format/float_conversion.cc index a761a5a5f9c..10e4695411b 100644 --- a/chromium/third_party/abseil-cpp/absl/strings/internal/str_format/float_conversion.cc +++ b/chromium/third_party/abseil-cpp/absl/strings/internal/str_format/float_conversion.cc @@ -224,13 +224,13 @@ class FractionalDigitGenerator { // This function will allocate enough stack space to perform the conversion. static void RunConversion( uint128 v, int exp, absl::FunctionRef<void(FractionalDigitGenerator)> f) { + using Limits = std::numeric_limits<long double>; assert(-exp < 0); - assert(-exp >= std::numeric_limits<long double>::min_exponent - 128); - static_assert( - StackArray::kMaxCapacity >= - (128 - std::numeric_limits<long double>::min_exponent + 31) / 32, - ""); - StackArray::RunWithCapacity((exp + 31) / 32, + assert(-exp >= Limits::min_exponent - 128); + static_assert(StackArray::kMaxCapacity >= + (Limits::digits + 128 - Limits::min_exponent + 31) / 32, + ""); + StackArray::RunWithCapacity((Limits::digits + exp + 31) / 32, [=](absl::Span<uint32_t> input) { f(FractionalDigitGenerator(input, v, exp)); }); diff --git a/chromium/third_party/abseil-cpp/absl/strings/str_format.h b/chromium/third_party/abseil-cpp/absl/strings/str_format.h index f48510b45b3..01465107e10 100644 --- a/chromium/third_party/abseil-cpp/absl/strings/str_format.h +++ b/chromium/third_party/abseil-cpp/absl/strings/str_format.h @@ -19,7 +19,7 @@ // // The `str_format` library is a typesafe replacement for the family of // `printf()` string formatting routines within the `<cstdio>` standard library -// header. Like the `printf` family, the `str_format` uses a "format string" to +// header. Like the `printf` family, `str_format` uses a "format string" to // perform argument substitutions based on types. See the `FormatSpec` section // below for format string documentation. // @@ -65,8 +65,7 @@ // boolean from a runtime check. // // In addition, the `str_format` library provides extension points for -// augmenting formatting to new types. These extensions are fully documented -// within the `str_format_extension.h` header file. +// augmenting formatting to new types. See "StrFormat Extensions" below. #ifndef ABSL_STRINGS_STR_FORMAT_H_ #define ABSL_STRINGS_STR_FORMAT_H_ @@ -282,9 +281,36 @@ using FormatSpec = str_format_internal::FormatSpecTemplate< // } else { // ... error case ... // } + +#if defined(__cpp_nontype_template_parameter_auto) +// If C++17 is available, an 'extended' format is also allowed that can specify +// multiple conversion characters per format argument, using a combination of +// `absl::FormatConversionCharSet` enum values (logically a set union) +// via the `|` operator. (Single character-based arguments are still accepted, +// but cannot be combined). Some common conversions also have predefined enum +// values, such as `absl::FormatConversionCharSet::kIntegral`. +// +// Example: +// // Extended format supports multiple conversion characters per argument, +// // specified via a combination of `FormatConversionCharSet` enums. +// using MyFormat = absl::ParsedFormat<absl::FormatConversionCharSet::d | +// absl::FormatConversionCharSet::x>; +// MyFormat GetFormat(bool use_hex) { +// if (use_hex) return MyFormat("foo %x bar"); +// return MyFormat("foo %d bar"); +// } +// // `format` can be used with any value that supports 'd' and 'x', +// // like `int`. +// auto format = GetFormat(use_hex); +// value = StringF(format, i); +template <auto... Conv> +using ParsedFormat = absl::str_format_internal::ExtendedParsedFormat< + absl::str_format_internal::ToFormatConversionCharSet(Conv)...>; +#else template <char... Conv> using ParsedFormat = str_format_internal::ExtendedParsedFormat< absl::str_format_internal::ToFormatConversionCharSet(Conv)...>; +#endif // defined(__cpp_nontype_template_parameter_auto) // StrFormat() // @@ -541,6 +567,246 @@ ABSL_MUST_USE_RESULT inline bool FormatUntyped( str_format_internal::UntypedFormatSpecImpl::Extract(format), args); } +//------------------------------------------------------------------------------ +// StrFormat Extensions +//------------------------------------------------------------------------------ +// +// AbslFormatConvert() +// +// The StrFormat library provides a customization API for formatting +// user-defined types using absl::StrFormat(). The API relies on detecting an +// overload in the user-defined type's namespace of a free (non-member) +// `AbslFormatConvert()` function, usually as a friend definition with the +// following signature: +// +// absl::FormatConvertResult<...> AbslFormatConvert( +// const X& value, +// const absl::FormatConversionSpec& spec, +// absl::FormatSink *sink); +// +// An `AbslFormatConvert()` overload for a type should only be declared in the +// same file and namespace as said type. +// +// The abstractions within this definition include: +// +// * An `absl::FormatConversionSpec` to specify the fields to pull from a +// user-defined type's format string +// * An `absl::FormatSink` to hold the converted string data during the +// conversion process. +// * An `absl::FormatConvertResult` to hold the status of the returned +// formatting operation +// +// The return type encodes all the conversion characters that your +// AbslFormatConvert() routine accepts. The return value should be {true}. +// A return value of {false} will result in `StrFormat()` returning +// an empty string. This result will be propagated to the result of +// `FormatUntyped`. +// +// Example: +// +// struct Point { +// // To add formatting support to `Point`, we simply need to add a free +// // (non-member) function `AbslFormatConvert()`. This method interprets +// // `spec` to print in the request format. The allowed conversion characters +// // can be restricted via the type of the result, in this example +// // string and integral formatting are allowed (but not, for instance +// // floating point characters like "%f"). You can add such a free function +// // using a friend declaration within the body of the class: +// friend absl::FormatConvertResult<absl::FormatConversionCharSet::kString | +// absl::FormatConversionCharSet::kIntegral> +// AbslFormatConvert(const Point& p, const absl::FormatConversionSpec& spec, +// absl::FormatSink* s) { +// if (spec.conversion_char() == absl::FormatConversionChar::s) { +// s->Append(absl::StrCat("x=", p.x, " y=", p.y)); +// } else { +// s->Append(absl::StrCat(p.x, ",", p.y)); +// } +// return {true}; +// } +// +// int x; +// int y; +// }; + +// clang-format off + +// FormatConversionChar +// +// Specifies the formatting character provided in the format string +// passed to `StrFormat()`. +enum class FormatConversionChar : uint8_t { + c, s, // text + d, i, o, u, x, X, // int + f, F, e, E, g, G, a, A, // float + n, p // misc +}; +// clang-format on + +// FormatConversionSpec +// +// Specifies modifications to the conversion of the format string, through use +// of one or more format flags in the source format string. +class FormatConversionSpec { + public: + // FormatConversionSpec::is_basic() + // + // Indicates that width and precision are not specified, and no additional + // flags are set for this conversion character in the format string. + bool is_basic() const { return impl_.is_basic(); } + + // FormatConversionSpec::has_left_flag() + // + // Indicates whether the result should be left justified for this conversion + // character in the format string. This flag is set through use of a '-' + // character in the format string. E.g. "%-s" + bool has_left_flag() const { return impl_.has_left_flag(); } + + // FormatConversionSpec::has_show_pos_flag() + // + // Indicates whether a sign column is prepended to the result for this + // conversion character in the format string, even if the result is positive. + // This flag is set through use of a '+' character in the format string. + // E.g. "%+d" + bool has_show_pos_flag() const { return impl_.has_show_pos_flag(); } + + // FormatConversionSpec::has_sign_col_flag() + // + // Indicates whether a mandatory sign column is added to the result for this + // conversion character. This flag is set through use of a space character + // (' ') in the format string. E.g. "% i" + bool has_sign_col_flag() const { return impl_.has_sign_col_flag(); } + + // FormatConversionSpec::has_alt_flag() + // + // Indicates whether an "alternate" format is applied to the result for this + // conversion character. Alternative forms depend on the type of conversion + // character, and unallowed alternatives are undefined. This flag is set + // through use of a '#' character in the format string. E.g. "%#h" + bool has_alt_flag() const { return impl_.has_alt_flag(); } + + // FormatConversionSpec::has_zero_flag() + // + // Indicates whether zeroes should be prepended to the result for this + // conversion character instead of spaces. This flag is set through use of the + // '0' character in the format string. E.g. "%0f" + bool has_zero_flag() const { return impl_.has_zero_flag(); } + + // FormatConversionSpec::conversion_char() + // + // Returns the underlying conversion character. + FormatConversionChar conversion_char() const { + return impl_.conversion_char(); + } + + // FormatConversionSpec::width() + // + // Returns the specified width (indicated through use of a non-zero integer + // value or '*' character) of the conversion character. If width is + // unspecified, it returns a negative value. + int width() const { return impl_.width(); } + + // FormatConversionSpec::precision() + // + // Returns the specified precision (through use of the '.' character followed + // by a non-zero integer value or '*' character) of the conversion character. + // If precision is unspecified, it returns a negative value. + int precision() const { return impl_.precision(); } + + private: + explicit FormatConversionSpec( + str_format_internal::FormatConversionSpecImpl impl) + : impl_(impl) {} + + friend str_format_internal::FormatConversionSpecImpl; + + absl::str_format_internal::FormatConversionSpecImpl impl_; +}; + +// Type safe OR operator for FormatConversionCharSet to allow accepting multiple +// conversion chars in custom format converters. +constexpr FormatConversionCharSet operator|(FormatConversionCharSet a, + FormatConversionCharSet b) { + return static_cast<FormatConversionCharSet>(static_cast<uint64_t>(a) | + static_cast<uint64_t>(b)); +} + +// FormatConversionCharSet +// +// Specifies the _accepted_ conversion types as a template parameter to +// FormatConvertResult for custom implementations of `AbslFormatConvert`. +// Note the helper predefined alias definitions (kIntegral, etc.) below. +enum class FormatConversionCharSet : uint64_t { + // text + c = str_format_internal::FormatConversionCharToConvInt('c'), + s = str_format_internal::FormatConversionCharToConvInt('s'), + // integer + d = str_format_internal::FormatConversionCharToConvInt('d'), + i = str_format_internal::FormatConversionCharToConvInt('i'), + o = str_format_internal::FormatConversionCharToConvInt('o'), + u = str_format_internal::FormatConversionCharToConvInt('u'), + x = str_format_internal::FormatConversionCharToConvInt('x'), + X = str_format_internal::FormatConversionCharToConvInt('X'), + // Float + f = str_format_internal::FormatConversionCharToConvInt('f'), + F = str_format_internal::FormatConversionCharToConvInt('F'), + e = str_format_internal::FormatConversionCharToConvInt('e'), + E = str_format_internal::FormatConversionCharToConvInt('E'), + g = str_format_internal::FormatConversionCharToConvInt('g'), + G = str_format_internal::FormatConversionCharToConvInt('G'), + a = str_format_internal::FormatConversionCharToConvInt('a'), + A = str_format_internal::FormatConversionCharToConvInt('A'), + // misc + n = str_format_internal::FormatConversionCharToConvInt('n'), + p = str_format_internal::FormatConversionCharToConvInt('p'), + + // Used for width/precision '*' specification. + kStar = static_cast<uint64_t>( + absl::str_format_internal::FormatConversionCharSetInternal::kStar), + // Some predefined values: + kIntegral = d | i | u | o | x | X, + kFloating = a | e | f | g | A | E | F | G, + kNumeric = kIntegral | kFloating, + kString = s, + kPointer = p, +}; + +// FormatSink +// +// An abstraction to which conversions write their string data. +// +class FormatSink { + public: + // Appends `count` copies of `ch`. + void Append(size_t count, char ch) { sink_->Append(count, ch); } + + void Append(string_view v) { sink_->Append(v); } + + // Appends the first `precision` bytes of `v`. If this is less than + // `width`, spaces will be appended first (if `left` is false), or + // after (if `left` is true) to ensure the total amount appended is + // at least `width`. + bool PutPaddedString(string_view v, int width, int precision, bool left) { + return sink_->PutPaddedString(v, width, precision, left); + } + + private: + friend str_format_internal::FormatSinkImpl; + explicit FormatSink(str_format_internal::FormatSinkImpl* s) : sink_(s) {} + str_format_internal::FormatSinkImpl* sink_; +}; + +// FormatConvertResult +// +// Indicates whether a call to AbslFormatConvert() was successful. +// This return type informs the StrFormat extension framework (through +// ADL but using the return type) of what conversion characters are supported. +// It is strongly discouraged to return {false}, as this will result in an +// empty string in StrFormat. +template <FormatConversionCharSet C> +struct FormatConvertResult { + bool value; +}; + ABSL_NAMESPACE_END } // namespace absl diff --git a/chromium/third_party/abseil-cpp/absl/strings/str_format_test.cc b/chromium/third_party/abseil-cpp/absl/strings/str_format_test.cc index 3f14dba3e35..d9fb25af09a 100644 --- a/chromium/third_party/abseil-cpp/absl/strings/str_format_test.cc +++ b/chromium/third_party/abseil-cpp/absl/strings/str_format_test.cc @@ -1,4 +1,6 @@ +#include "absl/strings/str_format.h" + #include <cstdarg> #include <cstdint> #include <cstdio> @@ -6,7 +8,8 @@ #include "gmock/gmock.h" #include "gtest/gtest.h" -#include "absl/strings/str_format.h" +#include "absl/strings/cord.h" +#include "absl/strings/str_cat.h" #include "absl/strings/string_view.h" namespace absl { @@ -350,6 +353,7 @@ TEST(StrFormat, BehavesAsDocumented) { EXPECT_EQ(StrFormat("%s", "C"), "C"); EXPECT_EQ(StrFormat("%s", std::string("C++")), "C++"); EXPECT_EQ(StrFormat("%s", string_view("view")), "view"); + EXPECT_EQ(StrFormat("%s", absl::Cord("cord")), "cord"); // Integral Conversion // These format integral types: char, int, long, uint64_t, etc. EXPECT_EQ(StrFormat("%d", char{10}), "10"); @@ -532,103 +536,152 @@ TEST_F(ParsedFormatTest, SimpleUncheckedIncorrect) { EXPECT_FALSE((ParsedFormat<'s', 'd', 'g'>::New(format))); } -using absl::str_format_internal::FormatConversionCharSet; +#if defined(__cpp_nontype_template_parameter_auto) + +template <auto T> +std::true_type IsValidParsedFormatArgTest(ParsedFormat<T>*); + +template <auto T> +std::false_type IsValidParsedFormatArgTest(...); + +template <auto T> +using IsValidParsedFormatArg = decltype(IsValidParsedFormatArgTest<T>(nullptr)); + +TEST_F(ParsedFormatTest, OnlyValidTypesAllowed) { + ASSERT_TRUE(IsValidParsedFormatArg<'c'>::value); + + ASSERT_TRUE(IsValidParsedFormatArg<FormatConversionCharSet::d>::value); + + ASSERT_TRUE(IsValidParsedFormatArg<absl::FormatConversionCharSet::d | + absl::FormatConversionCharSet::x>::value); + ASSERT_TRUE( + IsValidParsedFormatArg<absl::FormatConversionCharSet::kIntegral>::value); + + // This is an easy mistake to make, however, this will reduce to an integer + // which has no meaning, so we need to ensure it doesn't compile. + ASSERT_FALSE(IsValidParsedFormatArg<'x' | 'd'>::value); + + // For now, we disallow construction based on ConversionChar (rather than + // CharSet) + ASSERT_FALSE(IsValidParsedFormatArg<absl::FormatConversionChar::d>::value); +} + +TEST_F(ParsedFormatTest, ExtendedTyping) { + EXPECT_FALSE(ParsedFormat<FormatConversionCharSet::d>::New("")); + ASSERT_TRUE(ParsedFormat<absl::FormatConversionCharSet::d>::New("%d")); + auto v1 = ParsedFormat<'d', absl::FormatConversionCharSet::s>::New("%d%s"); + ASSERT_TRUE(v1); + auto v2 = ParsedFormat<absl::FormatConversionCharSet::d, 's'>::New("%d%s"); + ASSERT_TRUE(v2); + auto v3 = ParsedFormat<absl::FormatConversionCharSet::d | + absl::FormatConversionCharSet::s, + 's'>::New("%d%s"); + ASSERT_TRUE(v3); + auto v4 = ParsedFormat<absl::FormatConversionCharSet::d | + absl::FormatConversionCharSet::s, + 's'>::New("%s%s"); + ASSERT_TRUE(v4); +} +#endif TEST_F(ParsedFormatTest, UncheckedCorrect) { - auto f = ExtendedParsedFormat<FormatConversionCharSet::d>::New("ABC%dDEF"); + auto f = + ExtendedParsedFormat<absl::FormatConversionCharSet::d>::New("ABC%dDEF"); ASSERT_TRUE(f); EXPECT_EQ("[ABC]{d:1$d}[DEF]", SummarizeParsedFormat(*f)); std::string format = "%sFFF%dZZZ%f"; - auto f2 = - ExtendedParsedFormat<FormatConversionCharSet::kString, - FormatConversionCharSet::d, - FormatConversionCharSet::kFloating>::New(format); + auto f2 = ExtendedParsedFormat< + absl::FormatConversionCharSet::kString, absl::FormatConversionCharSet::d, + absl::FormatConversionCharSet::kFloating>::New(format); ASSERT_TRUE(f2); EXPECT_EQ("{s:1$s}[FFF]{d:2$d}[ZZZ]{f:3$f}", SummarizeParsedFormat(*f2)); - f2 = - ExtendedParsedFormat<FormatConversionCharSet::kString, - FormatConversionCharSet::d, - FormatConversionCharSet::kFloating>::New("%s %d %f"); + f2 = ExtendedParsedFormat< + absl::FormatConversionCharSet::kString, absl::FormatConversionCharSet::d, + absl::FormatConversionCharSet::kFloating>::New("%s %d %f"); ASSERT_TRUE(f2); EXPECT_EQ("{s:1$s}[ ]{d:2$d}[ ]{f:3$f}", SummarizeParsedFormat(*f2)); - auto star = ExtendedParsedFormat<FormatConversionCharSet::kStar, - FormatConversionCharSet::d>::New("%*d"); + auto star = + ExtendedParsedFormat<absl::FormatConversionCharSet::kStar, + absl::FormatConversionCharSet::d>::New("%*d"); ASSERT_TRUE(star); EXPECT_EQ("{*d:2$1$*d}", SummarizeParsedFormat(*star)); auto dollar = - ExtendedParsedFormat<FormatConversionCharSet::d, - FormatConversionCharSet::s>::New("%2$s %1$d"); + ExtendedParsedFormat<absl::FormatConversionCharSet::d, + absl::FormatConversionCharSet::s>::New("%2$s %1$d"); ASSERT_TRUE(dollar); EXPECT_EQ("{2$s:2$s}[ ]{1$d:1$d}", SummarizeParsedFormat(*dollar)); // with reuse - dollar = - ExtendedParsedFormat<FormatConversionCharSet::d, - FormatConversionCharSet::s>::New("%2$s %1$d %1$d"); + dollar = ExtendedParsedFormat< + absl::FormatConversionCharSet::d, + absl::FormatConversionCharSet::s>::New("%2$s %1$d %1$d"); ASSERT_TRUE(dollar); EXPECT_EQ("{2$s:2$s}[ ]{1$d:1$d}[ ]{1$d:1$d}", SummarizeParsedFormat(*dollar)); } TEST_F(ParsedFormatTest, UncheckedIgnoredArgs) { - EXPECT_FALSE((ExtendedParsedFormat<FormatConversionCharSet::d, - FormatConversionCharSet::s>::New("ABC"))); EXPECT_FALSE( - (ExtendedParsedFormat<FormatConversionCharSet::d, - FormatConversionCharSet::s>::New("%dABC"))); + (ExtendedParsedFormat<absl::FormatConversionCharSet::d, + absl::FormatConversionCharSet::s>::New("ABC"))); EXPECT_FALSE( - (ExtendedParsedFormat<FormatConversionCharSet::d, - FormatConversionCharSet::s>::New("ABC%2$s"))); - auto f = - ExtendedParsedFormat<FormatConversionCharSet::d, - FormatConversionCharSet::s>::NewAllowIgnored("ABC"); + (ExtendedParsedFormat<absl::FormatConversionCharSet::d, + absl::FormatConversionCharSet::s>::New("%dABC"))); + EXPECT_FALSE( + (ExtendedParsedFormat<absl::FormatConversionCharSet::d, + absl::FormatConversionCharSet::s>::New("ABC%2$s"))); + auto f = ExtendedParsedFormat< + absl::FormatConversionCharSet::d, + absl::FormatConversionCharSet::s>::NewAllowIgnored("ABC"); ASSERT_TRUE(f); EXPECT_EQ("[ABC]", SummarizeParsedFormat(*f)); f = ExtendedParsedFormat< - FormatConversionCharSet::d, - FormatConversionCharSet::s>::NewAllowIgnored("%dABC"); + absl::FormatConversionCharSet::d, + absl::FormatConversionCharSet::s>::NewAllowIgnored("%dABC"); ASSERT_TRUE(f); EXPECT_EQ("{d:1$d}[ABC]", SummarizeParsedFormat(*f)); f = ExtendedParsedFormat< - FormatConversionCharSet::d, - FormatConversionCharSet::s>::NewAllowIgnored("ABC%2$s"); + absl::FormatConversionCharSet::d, + absl::FormatConversionCharSet::s>::NewAllowIgnored("ABC%2$s"); ASSERT_TRUE(f); EXPECT_EQ("[ABC]{2$s:2$s}", SummarizeParsedFormat(*f)); } TEST_F(ParsedFormatTest, UncheckedMultipleTypes) { - auto dx = ExtendedParsedFormat<FormatConversionCharSet::d | - FormatConversionCharSet::x>::New("%1$d %1$x"); + auto dx = + ExtendedParsedFormat<absl::FormatConversionCharSet::d | + absl::FormatConversionCharSet::x>::New("%1$d %1$x"); EXPECT_TRUE(dx); EXPECT_EQ("{1$d:1$d}[ ]{1$x:1$x}", SummarizeParsedFormat(*dx)); - dx = ExtendedParsedFormat<FormatConversionCharSet::d | - FormatConversionCharSet::x>::New("%1$d"); + dx = ExtendedParsedFormat<absl::FormatConversionCharSet::d | + absl::FormatConversionCharSet::x>::New("%1$d"); EXPECT_TRUE(dx); EXPECT_EQ("{1$d:1$d}", SummarizeParsedFormat(*dx)); } TEST_F(ParsedFormatTest, UncheckedIncorrect) { - EXPECT_FALSE(ExtendedParsedFormat<FormatConversionCharSet::d>::New("")); + EXPECT_FALSE(ExtendedParsedFormat<absl::FormatConversionCharSet::d>::New("")); - EXPECT_FALSE( - ExtendedParsedFormat<FormatConversionCharSet::d>::New("ABC%dDEF%d")); + EXPECT_FALSE(ExtendedParsedFormat<absl::FormatConversionCharSet::d>::New( + "ABC%dDEF%d")); std::string format = "%sFFF%dZZZ%f"; - EXPECT_FALSE((ExtendedParsedFormat<FormatConversionCharSet::s, - FormatConversionCharSet::d, - FormatConversionCharSet::g>::New(format))); + EXPECT_FALSE( + (ExtendedParsedFormat<absl::FormatConversionCharSet::s, + absl::FormatConversionCharSet::d, + absl::FormatConversionCharSet::g>::New(format))); } TEST_F(ParsedFormatTest, RegressionMixPositional) { EXPECT_FALSE( - (ExtendedParsedFormat<FormatConversionCharSet::d, - FormatConversionCharSet::o>::New("%1$d %o"))); + (ExtendedParsedFormat<absl::FormatConversionCharSet::d, + absl::FormatConversionCharSet::o>::New("%1$d %o"))); } using FormatWrapperTest = ::testing::Test; @@ -653,6 +706,38 @@ TEST_F(FormatWrapperTest, ParsedFormat) { ABSL_NAMESPACE_END } // namespace absl +using FormatExtensionTest = ::testing::Test; + +struct Point { + friend absl::FormatConvertResult<absl::FormatConversionCharSet::kString | + absl::FormatConversionCharSet::kIntegral> + AbslFormatConvert(const Point& p, const absl::FormatConversionSpec& spec, + absl::FormatSink* s) { + if (spec.conversion_char() == absl::FormatConversionChar::s) { + s->Append(absl::StrCat("x=", p.x, " y=", p.y)); + } else { + s->Append(absl::StrCat(p.x, ",", p.y)); + } + return {true}; + } + + int x = 10; + int y = 20; +}; + +TEST_F(FormatExtensionTest, AbslFormatConvertExample) { + Point p; + EXPECT_EQ(absl::StrFormat("a %s z", p), "a x=10 y=20 z"); + EXPECT_EQ(absl::StrFormat("a %d z", p), "a 10,20 z"); + + // Typed formatting will fail to compile an invalid format. + // StrFormat("%f", p); // Does not compile. + std::string actual; + absl::UntypedFormatSpec f1("%f"); + // FormatUntyped will return false for bad character. + EXPECT_FALSE(absl::FormatUntyped(&actual, f1, {absl::FormatArg(p)})); +} + // Some codegen thunks that we can use to easily dump the generated assembly for // different StrFormat calls. diff --git a/chromium/third_party/abseil-cpp/absl/strings/str_split.h b/chromium/third_party/abseil-cpp/absl/strings/str_split.h index a79cd4a0ce0..1ce17f38aa8 100644 --- a/chromium/third_party/abseil-cpp/absl/strings/str_split.h +++ b/chromium/third_party/abseil-cpp/absl/strings/str_split.h @@ -44,6 +44,7 @@ #include <vector> #include "absl/base/internal/raw_logging.h" +#include "absl/base/macros.h" #include "absl/strings/internal/str_split_internal.h" #include "absl/strings/string_view.h" #include "absl/strings/strip.h" diff --git a/chromium/third_party/abseil-cpp/absl/strings/string_view.h b/chromium/third_party/abseil-cpp/absl/strings/string_view.h index 8a9db8c3d79..7fb03330033 100644 --- a/chromium/third_party/abseil-cpp/absl/strings/string_view.h +++ b/chromium/third_party/abseil-cpp/absl/strings/string_view.h @@ -586,7 +586,7 @@ constexpr bool operator>=(string_view x, string_view y) noexcept { } // IO Insertion Operator -std::ostream& operator<<(std::ostream& o, string_view piece); +ABSL_DLL std::ostream& operator<<(std::ostream& o, string_view piece); ABSL_NAMESPACE_END } // namespace absl |