diff options
Diffstat (limited to 'absl/strings/numbers.h')
| -rw-r--r-- | absl/strings/numbers.h | 36 |
1 files changed, 22 insertions, 14 deletions
diff --git a/absl/strings/numbers.h b/absl/strings/numbers.h index adf706a4e26e..75925e61f2c0 100644 --- a/absl/strings/numbers.h +++ b/absl/strings/numbers.h @@ -124,17 +124,11 @@ char* FastIntToBuffer(int_type i, char* buffer) { } } -} // namespace numbers_internal - -// SimpleAtoi() -// -// Converts a std::string to an integer, using `safe_strto?()` functions for actual -// parsing, returning `true` if successful. The `safe_strto?()` functions apply -// strict checking; the std::string must be a base-10 integer, optionally followed or -// preceded by ASCII whitespace, with a value in the range of the corresponding -// integer type. +// Implementation of SimpleAtoi, generalized to support arbitrary base (used +// with base different from 10 elsewhere in Abseil implementation). template <typename int_type> -ABSL_MUST_USE_RESULT bool SimpleAtoi(absl::string_view s, int_type* out) { +ABSL_MUST_USE_RESULT bool safe_strtoi_base(absl::string_view s, int_type* out, + int base) { static_assert(sizeof(*out) == 4 || sizeof(*out) == 8, "SimpleAtoi works only with 32-bit or 64-bit integers."); static_assert(!std::is_floating_point<int_type>::value, @@ -146,27 +140,41 @@ ABSL_MUST_USE_RESULT bool SimpleAtoi(absl::string_view s, int_type* out) { if (static_cast<int_type>(1) - 2 < 0) { // Signed if (sizeof(*out) == 64 / 8) { // 64-bit int64_t val; - parsed = numbers_internal::safe_strto64_base(s, &val, 10); + parsed = numbers_internal::safe_strto64_base(s, &val, base); *out = static_cast<int_type>(val); } else { // 32-bit int32_t val; - parsed = numbers_internal::safe_strto32_base(s, &val, 10); + parsed = numbers_internal::safe_strto32_base(s, &val, base); *out = static_cast<int_type>(val); } } else { // Unsigned if (sizeof(*out) == 64 / 8) { // 64-bit uint64_t val; - parsed = numbers_internal::safe_strtou64_base(s, &val, 10); + parsed = numbers_internal::safe_strtou64_base(s, &val, base); *out = static_cast<int_type>(val); } else { // 32-bit uint32_t val; - parsed = numbers_internal::safe_strtou32_base(s, &val, 10); + parsed = numbers_internal::safe_strtou32_base(s, &val, base); *out = static_cast<int_type>(val); } } return parsed; } +} // namespace numbers_internal + +// SimpleAtoi() +// +// Converts a std::string to an integer, using `safe_strto?()` functions for actual +// parsing, returning `true` if successful. The `safe_strto?()` functions apply +// strict checking; the std::string must be a base-10 integer, optionally followed or +// preceded by ASCII whitespace, with a value in the range of the corresponding +// integer type. +template <typename int_type> +ABSL_MUST_USE_RESULT bool SimpleAtoi(absl::string_view s, int_type* out) { + return numbers_internal::safe_strtoi_base(s, out, 10); +} + } // namespace absl #endif // ABSL_STRINGS_NUMBERS_H_ |