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-rw-r--r--absl/strings/numbers.h81
1 files changed, 47 insertions, 34 deletions
diff --git a/absl/strings/numbers.h b/absl/strings/numbers.h
index d7630cef..1d929de9 100644
--- a/absl/strings/numbers.h
+++ b/absl/strings/numbers.h
@@ -42,6 +42,7 @@
#include "absl/base/config.h"
#include "absl/base/internal/endian.h"
#include "absl/base/macros.h"
+#include "absl/base/nullability.h"
#include "absl/base/port.h"
#include "absl/numeric/bits.h"
#include "absl/numeric/int128.h"
@@ -59,7 +60,8 @@ ABSL_NAMESPACE_BEGIN
// encountered, this function returns `false`, leaving `out` in an unspecified
// state.
template <typename int_type>
-ABSL_MUST_USE_RESULT bool SimpleAtoi(absl::string_view str, int_type* out);
+ABSL_MUST_USE_RESULT bool SimpleAtoi(absl::string_view str,
+ absl::Nonnull<int_type*> out);
// SimpleAtof()
//
@@ -70,7 +72,8 @@ ABSL_MUST_USE_RESULT bool SimpleAtoi(absl::string_view str, int_type* out);
// allowed formats for `str`, except SimpleAtof() is locale-independent and will
// always use the "C" locale. If any errors are encountered, this function
// returns `false`, leaving `out` in an unspecified state.
-ABSL_MUST_USE_RESULT bool SimpleAtof(absl::string_view str, float* out);
+ABSL_MUST_USE_RESULT bool SimpleAtof(absl::string_view str,
+ absl::Nonnull<float*> out);
// SimpleAtod()
//
@@ -81,7 +84,8 @@ ABSL_MUST_USE_RESULT bool SimpleAtof(absl::string_view str, float* out);
// allowed formats for `str`, except SimpleAtod is locale-independent and will
// always use the "C" locale. If any errors are encountered, this function
// returns `false`, leaving `out` in an unspecified state.
-ABSL_MUST_USE_RESULT bool SimpleAtod(absl::string_view str, double* out);
+ABSL_MUST_USE_RESULT bool SimpleAtod(absl::string_view str,
+ absl::Nonnull<double*> out);
// SimpleAtob()
//
@@ -91,7 +95,8 @@ ABSL_MUST_USE_RESULT bool SimpleAtod(absl::string_view str, double* out);
// are interpreted as boolean `false`: "false", "f", "no", "n", "0". If any
// errors are encountered, this function returns `false`, leaving `out` in an
// unspecified state.
-ABSL_MUST_USE_RESULT bool SimpleAtob(absl::string_view str, bool* out);
+ABSL_MUST_USE_RESULT bool SimpleAtob(absl::string_view str,
+ absl::Nonnull<bool*> out);
// SimpleHexAtoi()
//
@@ -104,13 +109,14 @@ ABSL_MUST_USE_RESULT bool SimpleAtob(absl::string_view str, bool* out);
// by this function. If any errors are encountered, this function returns
// `false`, leaving `out` in an unspecified state.
template <typename int_type>
-ABSL_MUST_USE_RESULT bool SimpleHexAtoi(absl::string_view str, int_type* out);
+ABSL_MUST_USE_RESULT bool SimpleHexAtoi(absl::string_view str,
+ absl::Nonnull<int_type*> out);
// Overloads of SimpleHexAtoi() for 128 bit integers.
-ABSL_MUST_USE_RESULT inline bool SimpleHexAtoi(absl::string_view str,
- absl::int128* out);
-ABSL_MUST_USE_RESULT inline bool SimpleHexAtoi(absl::string_view str,
- absl::uint128* out);
+ABSL_MUST_USE_RESULT inline bool SimpleHexAtoi(
+ absl::string_view str, absl::Nonnull<absl::int128*> out);
+ABSL_MUST_USE_RESULT inline bool SimpleHexAtoi(
+ absl::string_view str, absl::Nonnull<absl::uint128*> out);
ABSL_NAMESPACE_END
} // namespace absl
@@ -132,18 +138,22 @@ ABSL_DLL extern const char
// PutTwoDigits(42, buf);
// // buf[0] == '4'
// // buf[1] == '2'
-void PutTwoDigits(uint32_t i, char* buf);
+void PutTwoDigits(uint32_t i, absl::Nonnull<char*> buf);
// safe_strto?() functions for implementing SimpleAtoi()
-bool safe_strto32_base(absl::string_view text, int32_t* value, int base);
-bool safe_strto64_base(absl::string_view text, int64_t* value, int base);
-bool safe_strto128_base(absl::string_view text, absl::int128* value,
- int base);
-bool safe_strtou32_base(absl::string_view text, uint32_t* value, int base);
-bool safe_strtou64_base(absl::string_view text, uint64_t* value, int base);
-bool safe_strtou128_base(absl::string_view text, absl::uint128* value,
- int base);
+bool safe_strto32_base(absl::string_view text, absl::Nonnull<int32_t*> value,
+ int base);
+bool safe_strto64_base(absl::string_view text, absl::Nonnull<int64_t*> value,
+ int base);
+bool safe_strto128_base(absl::string_view text,
+ absl::Nonnull<absl::int128*> value, int base);
+bool safe_strtou32_base(absl::string_view text, absl::Nonnull<uint32_t*> value,
+ int base);
+bool safe_strtou64_base(absl::string_view text, absl::Nonnull<uint64_t*> value,
+ int base);
+bool safe_strtou128_base(absl::string_view text,
+ absl::Nonnull<absl::uint128*> value, int base);
static const int kFastToBufferSize = 32;
static const int kSixDigitsToBufferSize = 16;
@@ -154,20 +164,20 @@ static const int kSixDigitsToBufferSize = 16;
// outside the range 0.0001-999999 are output using scientific notation
// (1.23456e+06). This routine is heavily optimized.
// Required buffer size is `kSixDigitsToBufferSize`.
-size_t SixDigitsToBuffer(double d, char* buffer);
+size_t SixDigitsToBuffer(double d, absl::Nonnull<char*> buffer);
// These functions are intended for speed. All functions take an output buffer
// as an argument and return a pointer to the last byte they wrote, which is the
// terminating '\0'. At most `kFastToBufferSize` bytes are written.
-char* FastIntToBuffer(int32_t, char*);
-char* FastIntToBuffer(uint32_t, char*);
-char* FastIntToBuffer(int64_t, char*);
-char* FastIntToBuffer(uint64_t, char*);
+absl::Nonnull<char*> FastIntToBuffer(int32_t, absl::Nonnull<char*>);
+absl::Nonnull<char*> FastIntToBuffer(uint32_t, absl::Nonnull<char*>);
+absl::Nonnull<char*> FastIntToBuffer(int64_t, absl::Nonnull<char*>);
+absl::Nonnull<char*> FastIntToBuffer(uint64_t, absl::Nonnull<char*>);
// For enums and integer types that are not an exact match for the types above,
// use templates to call the appropriate one of the four overloads above.
template <typename int_type>
-char* FastIntToBuffer(int_type i, char* buffer) {
+absl::Nonnull<char*> FastIntToBuffer(int_type i, absl::Nonnull<char*> buffer) {
static_assert(sizeof(i) <= 64 / 8,
"FastIntToBuffer works only with 64-bit-or-less integers.");
// TODO(jorg): This signed-ness check is used because it works correctly
@@ -194,7 +204,8 @@ char* FastIntToBuffer(int_type i, char* buffer) {
// 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 safe_strtoi_base(absl::string_view s, int_type* out,
+ABSL_MUST_USE_RESULT bool safe_strtoi_base(absl::string_view s,
+ absl::Nonnull<int_type*> out,
int base) {
static_assert(sizeof(*out) == 4 || sizeof(*out) == 8,
"SimpleAtoi works only with 32-bit or 64-bit integers.");
@@ -237,7 +248,7 @@ ABSL_MUST_USE_RESULT bool safe_strtoi_base(absl::string_view s, int_type* out,
// without the terminating null character. Thus `out` must be of length >= 16.
// Returns the number of non-pad digits of the output (it can never be zero
// since 0 has one digit).
-inline size_t FastHexToBufferZeroPad16(uint64_t val, char* out) {
+inline size_t FastHexToBufferZeroPad16(uint64_t val, absl::Nonnull<char*> out) {
#ifdef ABSL_INTERNAL_HAVE_SSSE3
uint64_t be = absl::big_endian::FromHost64(val);
const auto kNibbleMask = _mm_set1_epi8(0xf);
@@ -263,32 +274,34 @@ inline size_t FastHexToBufferZeroPad16(uint64_t val, char* out) {
} // namespace numbers_internal
template <typename int_type>
-ABSL_MUST_USE_RESULT bool SimpleAtoi(absl::string_view str, int_type* out) {
+ABSL_MUST_USE_RESULT bool SimpleAtoi(absl::string_view str,
+ absl::Nonnull<int_type*> out) {
return numbers_internal::safe_strtoi_base(str, out, 10);
}
ABSL_MUST_USE_RESULT inline bool SimpleAtoi(absl::string_view str,
- absl::int128* out) {
+ absl::Nonnull<absl::int128*> out) {
return numbers_internal::safe_strto128_base(str, out, 10);
}
ABSL_MUST_USE_RESULT inline bool SimpleAtoi(absl::string_view str,
- absl::uint128* out) {
+ absl::Nonnull<absl::uint128*> out) {
return numbers_internal::safe_strtou128_base(str, out, 10);
}
template <typename int_type>
-ABSL_MUST_USE_RESULT bool SimpleHexAtoi(absl::string_view str, int_type* out) {
+ABSL_MUST_USE_RESULT bool SimpleHexAtoi(absl::string_view str,
+ absl::Nonnull<int_type*> out) {
return numbers_internal::safe_strtoi_base(str, out, 16);
}
-ABSL_MUST_USE_RESULT inline bool SimpleHexAtoi(absl::string_view str,
- absl::int128* out) {
+ABSL_MUST_USE_RESULT inline bool SimpleHexAtoi(
+ absl::string_view str, absl::Nonnull<absl::int128*> out) {
return numbers_internal::safe_strto128_base(str, out, 16);
}
-ABSL_MUST_USE_RESULT inline bool SimpleHexAtoi(absl::string_view str,
- absl::uint128* out) {
+ABSL_MUST_USE_RESULT inline bool SimpleHexAtoi(
+ absl::string_view str, absl::Nonnull<absl::uint128*> out) {
return numbers_internal::safe_strtou128_base(str, out, 16);
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-30 05:42:00 +0000