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Export of internal Abseil changes.

Browse source 
--
7fa1107161a03dac53fb84c2b06d8092616c7b13 by Abseil Team <absl-team@google.com>:

Harden the generic stacktrace implementation for use during early program execution

PiperOrigin-RevId: 226375950

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079f9969329f5eb66f647dd3c44b17541b1bf217 by Matt Kulukundis <kfm@google.com>:

Workaround platforms that have over-aggressive warnings on -Wexit-time-destructors

PiperOrigin-RevId: 226362948

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1447943f509be681ca5495add0162c750ef237f1 by Matt Kulukundis <kfm@google.com>:

Switch from 64 to size_t atomics so they work on embedded platforms that do not
have 64 bit atomics.

PiperOrigin-RevId: 226210704

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d14d49837ae2bcde74051e0c79c18ee0f43866b9 by Tom Manshreck <shreck@google.com>:

Develop initial documentation for API breaking changes process:

PiperOrigin-RevId: 226210021

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7ea3d7fe0e86979dab83a5fc9cc3bf1d6cb3bd53 by Abseil Team <absl-team@google.com>:

Import of CCTZ from GitHub.

PiperOrigin-RevId: 226195522

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7de873e880d7f016a4fa1e08d626f0535cc470af by Abseil Team <absl-team@google.com>:

Make Abseil LICENSE files newline terminated, with a single
trailing blank line.  Also remove line-ending whitespace.

PiperOrigin-RevId: 226182949

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7d00643fadfad7f0d992c68bd9d2ed2e5bc960b0 by Matt Kulukundis <kfm@google.com>:

Internal cleanup

PiperOrigin-RevId: 226045282

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c4a0a11c0ce2875271191e477f3d36eaaeca4613 by Matt Kulukundis <kfm@google.com>:

Internal cleanup

PiperOrigin-RevId: 226038273

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8ee4ebbb1ae5cda119e436e5ff7e3aa966608c10 by Matt Kulukundis <kfm@google.com>:

Adds a global sampler which tracks a fraction of live tables for collecting
telemetry data.

PiperOrigin-RevId: 226032080

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d576446f050518cd1b0ae447d682d8552f0e7e30 by Mark Barolak <mbar@google.com>:

Replace an internal CaseEqual function with calls to the identical absl::EqualsIgnoreCase.  This closes out a rather old TODO.

PiperOrigin-RevId: 226024779

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6b23f1ee028a5ffa608c920424f1220a117a8f3d by Abseil Team <absl-team@google.com>:

Add December 2018 LTS branch to list of LTS branches.

PiperOrigin-RevId: 226011333

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bb0833a43bdaef4c8c059b17bcd27ba9a085a114 by Mark Barolak <mbar@google.com>:

Explicitly state that when the SimpleAtoi family of functions encounter an error, the value of their output parameter is unspecified.

Also standardize the name of the output parameter to be `out`.

PiperOrigin-RevId: 225997035

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46c1876b1a248eabda7545daa61a74a4cdfe9077 by Abseil Team <absl-team@google.com>:

Remove deprecated CMake function absl_test, absl_library and absl_header_library

PiperOrigin-RevId: 225950041
GitOrigin-RevId: 7fa1107161a03dac53fb84c2b06d8092616c7b13
Change-Id: I2ca9d3aada9292614527d1339a7557494139b806
This commit is contained in:
Abseil Team 2018-12-20 12:29:59 -08:00 • committed by Xiaoyi Zhang
parent 3e2e9b5557
commit 968a34ffda
16 changed files with 1313 additions and 348 deletions
Download patch file Download diff file Expand all files Collapse all files

57
absl/strings/numbers.cc
View file

@ -35,17 +35,18 @@
#include "absl/strings/ascii.h"
#include "absl/strings/charconv.h"
#include "absl/strings/internal/memutil.h"
#include "absl/strings/match.h"
#include "absl/strings/str_cat.h"
namespace absl {
bool SimpleAtof(absl::string_view str, float* value) {
*value = 0.0;
bool SimpleAtof(absl::string_view str, float* out) {
*out = 0.0;
str = StripAsciiWhitespace(str);
if (!str.empty() && str[0] == '+') {
str.remove_prefix(1);
}
auto result = absl::from_chars(str.data(), str.data() + str.size(), *value);
auto result = absl::from_chars(str.data(), str.data() + str.size(), *out);
if (result.ec == std::errc::invalid_argument) {
return false;
}
@ -56,22 +57,22 @@ bool SimpleAtof(absl::string_view str, float* value) {
// from_chars() with DR 3801's current wording will return max() on
// overflow. SimpleAtof returns infinity instead.
if (result.ec == std::errc::result_out_of_range) {
if (*value > 1.0) {
*value = std::numeric_limits<float>::infinity();
} else if (*value < -1.0) {
*value = -std::numeric_limits<float>::infinity();
if (*out > 1.0) {
*out = std::numeric_limits<float>::infinity();
} else if (*out < -1.0) {
*out = -std::numeric_limits<float>::infinity();
}
}
return true;
}
bool SimpleAtod(absl::string_view str, double* value) {
*value = 0.0;
bool SimpleAtod(absl::string_view str, double* out) {
*out = 0.0;
str = StripAsciiWhitespace(str);
if (!str.empty() && str[0] == '+') {
str.remove_prefix(1);
}
auto result = absl::from_chars(str.data(), str.data() + str.size(), *value);
auto result = absl::from_chars(str.data(), str.data() + str.size(), *out);
if (result.ec == std::errc::invalid_argument) {
return false;
}
@ -82,10 +83,10 @@ bool SimpleAtod(absl::string_view str, double* value) {
// from_chars() with DR 3801's current wording will return max() on
// overflow. SimpleAtod returns infinity instead.
if (result.ec == std::errc::result_out_of_range) {
if (*value > 1.0) {
*value = std::numeric_limits<double>::infinity();
} else if (*value < -1.0) {
*value = -std::numeric_limits<double>::infinity();
if (*out > 1.0) {
*out = std::numeric_limits<double>::infinity();
} else if (*out < -1.0) {
*out = -std::numeric_limits<double>::infinity();
}
}
return true;
@ -93,14 +94,6 @@ bool SimpleAtod(absl::string_view str, double* value) {
namespace {
// TODO(rogeeff): replace with the real released thing once we figure out what
// it is.
inline bool CaseEqual(absl::string_view piece1, absl::string_view piece2) {
return (piece1.size() == piece2.size() &&
0 == strings_internal::memcasecmp(piece1.data(), piece2.data(),
piece1.size()));
}
// Writes a two-character representation of 'i' to 'buf'. 'i' must be in the
// range 0 <= i < 100, and buf must have space for two characters. Example:
// char buf[2];
@ -136,18 +129,18 @@ inline void PutTwoDigits(size_t i, char* buf) {
} // namespace
bool SimpleAtob(absl::string_view str, bool* value) {
ABSL_RAW_CHECK(value != nullptr, "Output pointer must not be nullptr.");
if (CaseEqual(str, "true") || CaseEqual(str, "t") ||
CaseEqual(str, "yes") || CaseEqual(str, "y") ||
CaseEqual(str, "1")) {
*value = true;
bool SimpleAtob(absl::string_view str, bool* out) {
ABSL_RAW_CHECK(out != nullptr, "Output pointer must not be nullptr.");
if (EqualsIgnoreCase(str, "true") || EqualsIgnoreCase(str, "t") ||
EqualsIgnoreCase(str, "yes") || EqualsIgnoreCase(str, "y") ||
EqualsIgnoreCase(str, "1")) {
*out = true;
return true;
}
if (CaseEqual(str, "false") || CaseEqual(str, "f") ||
CaseEqual(str, "no") || CaseEqual(str, "n") ||
CaseEqual(str, "0")) {
*value = false;
if (EqualsIgnoreCase(str, "false") || EqualsIgnoreCase(str, "f") ||
EqualsIgnoreCase(str, "no") || EqualsIgnoreCase(str, "n") ||
EqualsIgnoreCase(str, "0")) {
*out = false;
return true;
}
return false;

19
absl/strings/numbers.h
View file

@ -44,7 +44,8 @@ namespace absl {
// Converts the given string into an integer value, returning `true` if
// successful. The string must reflect a base-10 integer (optionally followed or
// preceded by ASCII whitespace) whose value falls within the range of the
// integer type.
// integer type. If any errors are encountered, this function returns `false`,
// leaving `out` in an unspecified state.
template <typename int_type>
ABSL_MUST_USE_RESULT bool SimpleAtoi(absl::string_view s, int_type* out);
@ -53,24 +54,28 @@ ABSL_MUST_USE_RESULT bool SimpleAtoi(absl::string_view s, int_type* out);
// Converts the given string (optionally followed or preceded by ASCII
// whitespace) into a float, which may be rounded on overflow or underflow.
// See http://en.cppreference.com/w/c/string/byte/strtof for details about the
// allowed formats for `str`.
ABSL_MUST_USE_RESULT bool SimpleAtof(absl::string_view str, float* value);
// allowed formats for `str`. 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);
// SimpleAtod()
//
// Converts the given string (optionally followed or preceded by ASCII
// whitespace) into a double, which may be rounded on overflow or underflow.
// See http://en.cppreference.com/w/c/string/byte/strtof for details about the
// allowed formats for `str`.
ABSL_MUST_USE_RESULT bool SimpleAtod(absl::string_view str, double* value);
// allowed formats for `str`. 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);
// SimpleAtob()
//
// Converts the given string into a boolean, returning `true` if successful.
// The following case-insensitive strings are interpreted as boolean `true`:
// "true", "t", "yes", "y", "1". The following case-insensitive strings
// are interpreted as boolean `false`: "false", "f", "no", "n", "0".
ABSL_MUST_USE_RESULT bool SimpleAtob(absl::string_view str, bool* value);
// 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);
} // namespace absl