diff options
Diffstat (limited to 'absl/strings/substitute.h')
| -rw-r--r-- | absl/strings/substitute.h | 66 |
1 files changed, 46 insertions, 20 deletions
diff --git a/absl/strings/substitute.h b/absl/strings/substitute.h index 6d2b08ab..d6a5a690 100644 --- a/absl/strings/substitute.h +++ b/absl/strings/substitute.h @@ -55,6 +55,8 @@ // * bool (Printed as "true" or "false") // * pointer types other than char* (Printed as "0x<lower case hex string>", // except that null is printed as "NULL") +// * user-defined types via the `AbslStringify()` customization point. See the +// documentation for `absl::StrCat` for an explanation on how to use this. // // If an invalid format string is provided, Substitute returns an empty string // and SubstituteAndAppend does not change the provided output string. @@ -79,6 +81,7 @@ #include "absl/base/port.h" #include "absl/strings/ascii.h" #include "absl/strings/escaping.h" +#include "absl/strings/internal/stringify_sink.h" #include "absl/strings/numbers.h" #include "absl/strings/str_cat.h" #include "absl/strings/str_split.h" @@ -102,14 +105,14 @@ class Arg { // Overloads for string-y things // // Explicitly overload `const char*` so the compiler doesn't cast to `bool`. - Arg(const char* value) // NOLINT(runtime/explicit) + Arg(const char* value) // NOLINT(google-explicit-constructor) : piece_(absl::NullSafeStringView(value)) {} template <typename Allocator> Arg( // NOLINT const std::basic_string<char, std::char_traits<char>, Allocator>& value) noexcept : piece_(value) {} - Arg(absl::string_view value) // NOLINT(runtime/explicit) + Arg(absl::string_view value) // NOLINT(google-explicit-constructor) : piece_(value) {} // Overloads for primitives @@ -119,45 +122,67 @@ class Arg { // probably using them as 8-bit integers and would probably prefer an integer // representation. However, we can't really know, so we make the caller decide // what to do. - Arg(char value) // NOLINT(runtime/explicit) + Arg(char value) // NOLINT(google-explicit-constructor) : piece_(scratch_, 1) { scratch_[0] = value; } Arg(short value) // NOLINT(*) : piece_(scratch_, - numbers_internal::FastIntToBuffer(value, scratch_) - scratch_) {} + static_cast<size_t>( + numbers_internal::FastIntToBuffer(value, scratch_) - + scratch_)) {} Arg(unsigned short value) // NOLINT(*) : piece_(scratch_, - numbers_internal::FastIntToBuffer(value, scratch_) - scratch_) {} - Arg(int value) // NOLINT(runtime/explicit) + static_cast<size_t>( + numbers_internal::FastIntToBuffer(value, scratch_) - + scratch_)) {} + Arg(int value) // NOLINT(google-explicit-constructor) : piece_(scratch_, - numbers_internal::FastIntToBuffer(value, scratch_) - scratch_) {} - Arg(unsigned int value) // NOLINT(runtime/explicit) + static_cast<size_t>( + numbers_internal::FastIntToBuffer(value, scratch_) - + scratch_)) {} + Arg(unsigned int value) // NOLINT(google-explicit-constructor) : piece_(scratch_, - numbers_internal::FastIntToBuffer(value, scratch_) - scratch_) {} + static_cast<size_t>( + numbers_internal::FastIntToBuffer(value, scratch_) - + scratch_)) {} Arg(long value) // NOLINT(*) : piece_(scratch_, - numbers_internal::FastIntToBuffer(value, scratch_) - scratch_) {} + static_cast<size_t>( + numbers_internal::FastIntToBuffer(value, scratch_) - + scratch_)) {} Arg(unsigned long value) // NOLINT(*) : piece_(scratch_, - numbers_internal::FastIntToBuffer(value, scratch_) - scratch_) {} + static_cast<size_t>( + numbers_internal::FastIntToBuffer(value, scratch_) - + scratch_)) {} Arg(long long value) // NOLINT(*) : piece_(scratch_, - numbers_internal::FastIntToBuffer(value, scratch_) - scratch_) {} + static_cast<size_t>( + numbers_internal::FastIntToBuffer(value, scratch_) - + scratch_)) {} Arg(unsigned long long value) // NOLINT(*) : piece_(scratch_, - numbers_internal::FastIntToBuffer(value, scratch_) - scratch_) {} - Arg(float value) // NOLINT(runtime/explicit) + static_cast<size_t>( + numbers_internal::FastIntToBuffer(value, scratch_) - + scratch_)) {} + Arg(float value) // NOLINT(google-explicit-constructor) : piece_(scratch_, numbers_internal::SixDigitsToBuffer(value, scratch_)) { } - Arg(double value) // NOLINT(runtime/explicit) + Arg(double value) // NOLINT(google-explicit-constructor) : piece_(scratch_, numbers_internal::SixDigitsToBuffer(value, scratch_)) { } - Arg(bool value) // NOLINT(runtime/explicit) + Arg(bool value) // NOLINT(google-explicit-constructor) : piece_(value ? "true" : "false") {} - Arg(Hex hex); // NOLINT(runtime/explicit) - Arg(Dec dec); // NOLINT(runtime/explicit) + template <typename T, typename = typename std::enable_if< + strings_internal::HasAbslStringify<T>::value>::type> + Arg( // NOLINT(google-explicit-constructor) + const T& v, strings_internal::StringifySink&& sink = {}) + : piece_(strings_internal::ExtractStringification(sink, v)) {} + + Arg(Hex hex); // NOLINT(google-explicit-constructor) + Arg(Dec dec); // NOLINT(google-explicit-constructor) // vector<bool>::reference and const_reference require special help to convert // to `Arg` because it requires two user defined conversions. @@ -172,13 +197,14 @@ class Arg { // `void*` values, with the exception of `char*`, are printed as // "0x<hex value>". However, in the case of `nullptr`, "NULL" is printed. - Arg(const void* value); // NOLINT(runtime/explicit) + Arg(const void* value); // NOLINT(google-explicit-constructor) // Normal enums are already handled by the integer formatters. // This overload matches only scoped enums. template <typename T, typename = typename std::enable_if< - std::is_enum<T>{} && !std::is_convertible<T, int>{}>::type> + std::is_enum<T>{} && !std::is_convertible<T, int>{} && + !strings_internal::HasAbslStringify<T>::value>::type> Arg(T value) // NOLINT(google-explicit-constructor) : Arg(static_cast<typename std::underlying_type<T>::type>(value)) {} |