diff options
Diffstat (limited to 'absl/strings/internal/str_format/extension.h')
| -rw-r--r-- | absl/strings/internal/str_format/extension.h | 119 |
1 files changed, 71 insertions, 48 deletions
diff --git a/absl/strings/internal/str_format/extension.h b/absl/strings/internal/str_format/extension.h index 16f6c0a4..d1665753 100644 --- a/absl/strings/internal/str_format/extension.h +++ b/absl/strings/internal/str_format/extension.h @@ -137,7 +137,7 @@ struct Flags { }; // clang-format off -#define ABSL_CONVERSION_CHARS_EXPAND_(X_VAL, X_SEP) \ +#define ABSL_INTERNAL_CONVERSION_CHARS_EXPAND_(X_VAL, X_SEP) \ /* text */ \ X_VAL(c) X_SEP X_VAL(C) X_SEP X_VAL(s) X_SEP X_VAL(S) X_SEP \ /* ints */ \ @@ -161,11 +161,11 @@ enum class FormatConversionChar : uint8_t { inline FormatConversionChar FormatConversionCharFromChar(char c) { switch (c) { -#define X_VAL(id) \ - case #id[0]: \ +#define ABSL_INTERNAL_X_VAL(id) \ + case #id[0]: \ return FormatConversionChar::id; - ABSL_CONVERSION_CHARS_EXPAND_(X_VAL, ) -#undef X_VAL + ABSL_INTERNAL_CONVERSION_CHARS_EXPAND_(ABSL_INTERNAL_X_VAL, ) +#undef ABSL_INTERNAL_X_VAL } return FormatConversionChar::kNone; } @@ -240,15 +240,16 @@ inline bool FormatConversionCharIsFloat(FormatConversionChar c) { inline char FormatConversionCharToChar(FormatConversionChar c) { switch (c) { -#define X_VAL(e) \ +#define ABSL_INTERNAL_X_VAL(e) \ case FormatConversionChar::e: \ return #e[0]; -#define X_SEP - ABSL_CONVERSION_CHARS_EXPAND_(X_VAL, X_SEP) +#define ABSL_INTERNAL_X_SEP + ABSL_INTERNAL_CONVERSION_CHARS_EXPAND_(ABSL_INTERNAL_X_VAL, + ABSL_INTERNAL_X_SEP) case FormatConversionChar::kNone: return '\0'; -#undef X_VAL -#undef X_SEP +#undef ABSL_INTERNAL_X_VAL +#undef ABSL_INTERNAL_X_SEP } return '\0'; } @@ -262,11 +263,8 @@ inline std::ostream& operator<<(std::ostream& os, FormatConversionChar v) { struct FormatConversionSpecImplFriend; -class ConversionSpec { +class FormatConversionSpec { public: - // Deprecated (use has_x_flag() instead). - Flags flags() const { return flags_; } - // Width and precison are not specified, no flags are set. bool is_basic() const { return flags_.basic; } bool has_left_flag() const { return flags_.left; } @@ -275,10 +273,10 @@ class ConversionSpec { bool has_alt_flag() const { return flags_.alt; } bool has_zero_flag() const { return flags_.zero; } - FormatConversionChar conv() const { + FormatConversionChar conversion_char() const { // Keep this field first in the struct . It generates better code when // accessing it when ConversionSpec is passed by value in registers. - static_assert(offsetof(ConversionSpec, conv_) == 0, ""); + static_assert(offsetof(FormatConversionSpec, conv_) == 0, ""); return conv_; } @@ -289,6 +287,11 @@ class ConversionSpec { // negative value. int precision() const { return precision_; } + // Deprecated (use has_x_flag() instead). + Flags flags() const { return flags_; } + // Deprecated + FormatConversionChar conv() const { return conversion_char(); } + private: friend struct str_format_internal::FormatConversionSpecImplFriend; FormatConversionChar conv_ = FormatConversionChar::kNone; @@ -298,46 +301,57 @@ class ConversionSpec { }; struct FormatConversionSpecImplFriend final { - static void SetFlags(Flags f, ConversionSpec* conv) { conv->flags_ = f; } - static void SetConversionChar(FormatConversionChar c, ConversionSpec* conv) { + static void SetFlags(Flags f, FormatConversionSpec* conv) { + conv->flags_ = f; + } + static void SetConversionChar(FormatConversionChar c, + FormatConversionSpec* conv) { conv->conv_ = c; } - static void SetWidth(int w, ConversionSpec* conv) { conv->width_ = w; } - static void SetPrecision(int p, ConversionSpec* conv) { + static void SetWidth(int w, FormatConversionSpec* conv) { conv->width_ = w; } + static void SetPrecision(int p, FormatConversionSpec* conv) { conv->precision_ = p; } - static std::string FlagsToString(const ConversionSpec& spec) { + static std::string FlagsToString(const FormatConversionSpec& spec) { return spec.flags_.ToString(); } }; constexpr uint64_t FormatConversionCharToConvValue(char conv) { return -#define CONV_SET_CASE(c) \ +#define ABSL_INTERNAL_CHAR_SET_CASE(c) \ conv == #c[0] \ ? (uint64_t{1} << (1 + static_cast<uint8_t>(FormatConversionChar::c))) \ : - ABSL_CONVERSION_CHARS_EXPAND_(CONV_SET_CASE, ) -#undef CONV_SET_CASE + ABSL_INTERNAL_CONVERSION_CHARS_EXPAND_(ABSL_INTERNAL_CHAR_SET_CASE, ) +#undef ABSL_INTERNAL_CHAR_SET_CASE conv == '*' ? 1 : 0; } -enum class Conv : uint64_t { -#define CONV_SET_CASE(c) c = FormatConversionCharToConvValue(#c[0]), - ABSL_CONVERSION_CHARS_EXPAND_(CONV_SET_CASE, ) -#undef CONV_SET_CASE +enum class FormatConversionCharSet : uint64_t { +#define ABSL_INTERNAL_CHAR_SET_CASE(c) \ + c = FormatConversionCharToConvValue(#c[0]), + ABSL_INTERNAL_CONVERSION_CHARS_EXPAND_(ABSL_INTERNAL_CHAR_SET_CASE, ) +#undef ABSL_INTERNAL_CHAR_SET_CASE // Used for width/precision '*' specification. - star = FormatConversionCharToConvValue('*'), - + kStar = FormatConversionCharToConvValue('*'), // Some predefined values: - integral = d | i | u | o | x | X, - floating = a | e | f | g | A | E | F | G, - numeric = integral | floating, - string = s, - pointer = p + kIntegral = d | i | u | o | x | X, + kFloating = a | e | f | g | A | E | F | G, + kNumeric = kIntegral | kFloating, + kString = s, + kPointer = p, + + // The following are deprecated + star = kStar, + integral = kIntegral, + floating = kFloating, + numeric = kNumeric, + string = kString, + pointer = kPointer }; // Type safe OR operator. @@ -345,36 +359,41 @@ enum class Conv : uint64_t { // 1. operator| on enums makes them decay to integers and the result is an // integer. We need the result to stay as an enum. // 2. We use "enum class" which would not work even if we accepted the decay. -constexpr Conv operator|(Conv a, Conv b) { - return Conv(static_cast<uint64_t>(a) | static_cast<uint64_t>(b)); +constexpr FormatConversionCharSet operator|(FormatConversionCharSet a, + FormatConversionCharSet b) { + return FormatConversionCharSet(static_cast<uint64_t>(a) | + static_cast<uint64_t>(b)); } // Get a conversion with a single character in it. -constexpr Conv ConversionCharToConv(char c) { - return Conv(FormatConversionCharToConvValue(c)); +constexpr FormatConversionCharSet ConversionCharToConv(char c) { + return FormatConversionCharSet(FormatConversionCharToConvValue(c)); } // Checks whether `c` exists in `set`. -constexpr bool Contains(Conv set, char c) { +constexpr bool Contains(FormatConversionCharSet set, char c) { return (static_cast<uint64_t>(set) & FormatConversionCharToConvValue(c)) != 0; } // Checks whether all the characters in `c` are contained in `set` -constexpr bool Contains(Conv set, Conv c) { +constexpr bool Contains(FormatConversionCharSet set, + FormatConversionCharSet c) { return (static_cast<uint64_t>(set) & static_cast<uint64_t>(c)) == static_cast<uint64_t>(c); } // Return type of the AbslFormatConvert() functions. -// The Conv template parameter is used to inform the framework of what -// conversion characters are supported by that AbslFormatConvert routine. -template <Conv C> -struct ConvertResult { - static constexpr Conv kConv = C; +// The FormatConversionCharSet template parameter is used to inform the +// framework of what conversion characters are supported by that +// AbslFormatConvert routine. +template <FormatConversionCharSet C> +struct FormatConvertResult { + static constexpr FormatConversionCharSet kConv = C; bool value; }; -template <Conv C> -constexpr Conv ConvertResult<C>::kConv; + +template <FormatConversionCharSet C> +constexpr FormatConversionCharSet FormatConvertResult<C>::kConv; // Return capacity - used, clipped to a minimum of 0. inline size_t Excess(size_t used, size_t capacity) { @@ -383,6 +402,10 @@ inline size_t Excess(size_t used, size_t capacity) { // Type alias for use during migration. using ConversionChar = FormatConversionChar; +using ConversionSpec = FormatConversionSpec; +using Conv = FormatConversionCharSet; +template <FormatConversionCharSet C> +using ConvertResult = FormatConvertResult<C>; } // namespace str_format_internal |