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-rw-r--r--absl/base/BUILD.bazel14
-rw-r--r--absl/base/internal/unique_small_name_test.cc77
-rw-r--r--absl/base/optimization.h26
-rw-r--r--absl/flags/internal/commandlineflag.h5
-rw-r--r--absl/flags/internal/commandlineflag_test.cc20
-rw-r--r--absl/flags/internal/flag.h1
-rw-r--r--absl/flags/internal/private_handle_accessor.cc5
-rw-r--r--absl/flags/internal/private_handle_accessor.h3
-rw-r--r--absl/flags/internal/type_erased.cc8
-rw-r--r--absl/flags/internal/type_erased.h11
-rw-r--r--absl/random/internal/BUILD.bazel13
-rw-r--r--absl/strings/cord.cc1
-rw-r--r--absl/strings/cord.h2
-rw-r--r--absl/strings/substitute.h13
-rw-r--r--absl/synchronization/mutex.h7
-rw-r--r--absl/time/duration.cc121
-rw-r--r--absl/time/format.cc68
-rw-r--r--absl/time/time.h12
18 files changed, 280 insertions, 127 deletions
diff --git a/absl/base/BUILD.bazel b/absl/base/BUILD.bazel
index 816e592b..76122dab 100644
--- a/absl/base/BUILD.bazel
+++ b/absl/base/BUILD.bazel
@@ -777,3 +777,17 @@ cc_test(
"@com_google_googletest//:gtest_main",
],
)
+
+cc_test(
+ name = "unique_small_name_test",
+ size = "small",
+ srcs = ["internal/unique_small_name_test.cc"],
+ copts = ABSL_TEST_COPTS,
+ linkopts = ABSL_DEFAULT_LINKOPTS,
+ linkstatic = 1,
+ deps = [
+ ":core_headers",
+ "//absl/strings",
+ "@com_google_googletest//:gtest_main",
+ ],
+)
diff --git a/absl/base/internal/unique_small_name_test.cc b/absl/base/internal/unique_small_name_test.cc
new file mode 100644
index 00000000..ff8c2b3f
--- /dev/null
+++ b/absl/base/internal/unique_small_name_test.cc
@@ -0,0 +1,77 @@
+// Copyright 2020 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "gtest/gtest.h"
+#include "absl/base/optimization.h"
+#include "absl/strings/string_view.h"
+
+// This test by itself does not do anything fancy, but it serves as binary I can
+// query in shell test.
+
+namespace {
+
+template <class T>
+void DoNotOptimize(const T& var) {
+#ifdef __GNUC__
+ asm volatile("" : "+m"(const_cast<T&>(var)));
+#else
+ std::cout << (void*)&var;
+#endif
+}
+
+int very_long_int_variable_name ABSL_INTERNAL_UNIQUE_SMALL_NAME() = 0;
+char very_long_str_variable_name[] ABSL_INTERNAL_UNIQUE_SMALL_NAME() = "abc";
+
+TEST(UniqueSmallName, NonAutomaticVar) {
+ EXPECT_EQ(very_long_int_variable_name, 0);
+ EXPECT_EQ(absl::string_view(very_long_str_variable_name), "abc");
+}
+
+int VeryLongFreeFunctionName() ABSL_INTERNAL_UNIQUE_SMALL_NAME();
+
+TEST(UniqueSmallName, FreeFunction) {
+ DoNotOptimize(&VeryLongFreeFunctionName);
+
+ EXPECT_EQ(VeryLongFreeFunctionName(), 456);
+}
+
+int VeryLongFreeFunctionName() { return 456; }
+
+struct VeryLongStructName {
+ explicit VeryLongStructName(int i);
+
+ int VeryLongMethodName() ABSL_INTERNAL_UNIQUE_SMALL_NAME();
+
+ static int VeryLongStaticMethodName() ABSL_INTERNAL_UNIQUE_SMALL_NAME();
+
+ private:
+ int fld;
+};
+
+TEST(UniqueSmallName, Struct) {
+ VeryLongStructName var(10);
+
+ DoNotOptimize(var);
+ DoNotOptimize(&VeryLongStructName::VeryLongMethodName);
+ DoNotOptimize(&VeryLongStructName::VeryLongStaticMethodName);
+
+ EXPECT_EQ(var.VeryLongMethodName(), 10);
+ EXPECT_EQ(VeryLongStructName::VeryLongStaticMethodName(), 123);
+}
+
+VeryLongStructName::VeryLongStructName(int i) : fld(i) {}
+int VeryLongStructName::VeryLongMethodName() { return fld; }
+int VeryLongStructName::VeryLongStaticMethodName() { return 123; }
+
+} // namespace
diff --git a/absl/base/optimization.h b/absl/base/optimization.h
index 1541d7a8..92bf9cd3 100644
--- a/absl/base/optimization.h
+++ b/absl/base/optimization.h
@@ -212,4 +212,30 @@
} while (0)
#endif
+// ABSL_INTERNAL_UNIQUE_SMALL_NAME(cond)
+// This macro forces small unique name on a static file level symbols like
+// static local variables or static functions. This is intended to be used in
+// macro definitions to optimize the cost of generated code. Do NOT use it on
+// symbols exported from translation unit since it may casue a link time
+// conflict.
+//
+// Example:
+//
+// #define MY_MACRO(txt)
+// namespace {
+// char VeryVeryLongVarName[] ABSL_INTERNAL_UNIQUE_SMALL_NAME() = txt;
+// const char* VeryVeryLongFuncName() ABSL_INTERNAL_UNIQUE_SMALL_NAME();
+// const char* VeryVeryLongFuncName() { return txt; }
+// }
+//
+
+#if defined(__GNUC__)
+#define ABSL_INTERNAL_UNIQUE_SMALL_NAME2(x) #x
+#define ABSL_INTERNAL_UNIQUE_SMALL_NAME1(x) ABSL_INTERNAL_UNIQUE_SMALL_NAME2(x)
+#define ABSL_INTERNAL_UNIQUE_SMALL_NAME() \
+ asm(ABSL_INTERNAL_UNIQUE_SMALL_NAME1(.absl.__COUNTER__))
+#else
+#define ABSL_INTERNAL_UNIQUE_SMALL_NAME()
+#endif
+
#endif // ABSL_BASE_OPTIMIZATION_H_
diff --git a/absl/flags/internal/commandlineflag.h b/absl/flags/internal/commandlineflag.h
index 2d3b794d..0a7197b7 100644
--- a/absl/flags/internal/commandlineflag.h
+++ b/absl/flags/internal/commandlineflag.h
@@ -128,7 +128,6 @@ class CommandLineFlag {
virtual std::string Help() const = 0;
// Returns true iff this object corresponds to retired flag.
virtual bool IsRetired() const;
- virtual bool IsSpecifiedOnCommandLine() const = 0;
virtual std::string DefaultValue() const = 0;
virtual std::string CurrentValue() const = 0;
@@ -167,6 +166,10 @@ class CommandLineFlag {
// the dst based on the current flag's value.
virtual void Read(void* dst) const = 0;
+ // To be deleted. Used to return true if flag's current value originated from
+ // command line.
+ virtual bool IsSpecifiedOnCommandLine() const = 0;
+
// Validates supplied value usign validator or parseflag routine
virtual bool ValidateInputValue(absl::string_view value) const = 0;
diff --git a/absl/flags/internal/commandlineflag_test.cc b/absl/flags/internal/commandlineflag_test.cc
index 54d50fff..0b5aea37 100644
--- a/absl/flags/internal/commandlineflag_test.cc
+++ b/absl/flags/internal/commandlineflag_test.cc
@@ -121,42 +121,48 @@ TEST_F(CommandLineFlagTest, TestParseFromCurrentValue) {
std::string err;
auto* flag_01 = flags::FindCommandLineFlag("int_flag");
- EXPECT_FALSE(flag_01->IsSpecifiedOnCommandLine());
+ EXPECT_FALSE(
+ flags::PrivateHandleAccessor::IsSpecifiedOnCommandLine(*flag_01));
EXPECT_TRUE(flags::PrivateHandleAccessor::ParseFrom(
flag_01, "11", flags::SET_FLAGS_VALUE, flags::kProgrammaticChange, &err));
EXPECT_EQ(absl::GetFlag(FLAGS_int_flag), 11);
- EXPECT_FALSE(flag_01->IsSpecifiedOnCommandLine());
+ EXPECT_FALSE(
+ flags::PrivateHandleAccessor::IsSpecifiedOnCommandLine(*flag_01));
EXPECT_TRUE(flags::PrivateHandleAccessor::ParseFrom(
flag_01, "-123", flags::SET_FLAGS_VALUE, flags::kProgrammaticChange,
&err));
EXPECT_EQ(absl::GetFlag(FLAGS_int_flag), -123);
- EXPECT_FALSE(flag_01->IsSpecifiedOnCommandLine());
+ EXPECT_FALSE(
+ flags::PrivateHandleAccessor::IsSpecifiedOnCommandLine(*flag_01));
EXPECT_TRUE(!flags::PrivateHandleAccessor::ParseFrom(
flag_01, "xyz", flags::SET_FLAGS_VALUE, flags::kProgrammaticChange,
&err));
EXPECT_EQ(absl::GetFlag(FLAGS_int_flag), -123);
EXPECT_EQ(err, "Illegal value 'xyz' specified for flag 'int_flag'");
- EXPECT_FALSE(flag_01->IsSpecifiedOnCommandLine());
+ EXPECT_FALSE(
+ flags::PrivateHandleAccessor::IsSpecifiedOnCommandLine(*flag_01));
EXPECT_TRUE(!flags::PrivateHandleAccessor::ParseFrom(
flag_01, "A1", flags::SET_FLAGS_VALUE, flags::kProgrammaticChange, &err));
EXPECT_EQ(absl::GetFlag(FLAGS_int_flag), -123);
EXPECT_EQ(err, "Illegal value 'A1' specified for flag 'int_flag'");
- EXPECT_FALSE(flag_01->IsSpecifiedOnCommandLine());
+ EXPECT_FALSE(
+ flags::PrivateHandleAccessor::IsSpecifiedOnCommandLine(*flag_01));
EXPECT_TRUE(flags::PrivateHandleAccessor::ParseFrom(
flag_01, "0x10", flags::SET_FLAGS_VALUE, flags::kProgrammaticChange,
&err));
EXPECT_EQ(absl::GetFlag(FLAGS_int_flag), 16);
- EXPECT_FALSE(flag_01->IsSpecifiedOnCommandLine());
+ EXPECT_FALSE(
+ flags::PrivateHandleAccessor::IsSpecifiedOnCommandLine(*flag_01));
EXPECT_TRUE(flags::PrivateHandleAccessor::ParseFrom(
flag_01, "011", flags::SET_FLAGS_VALUE, flags::kCommandLine, &err));
EXPECT_EQ(absl::GetFlag(FLAGS_int_flag), 11);
- EXPECT_TRUE(flag_01->IsSpecifiedOnCommandLine());
+ EXPECT_TRUE(flags::PrivateHandleAccessor::IsSpecifiedOnCommandLine(*flag_01));
EXPECT_TRUE(!flags::PrivateHandleAccessor::ParseFrom(
flag_01, "", flags::SET_FLAGS_VALUE, flags::kProgrammaticChange, &err));
diff --git a/absl/flags/internal/flag.h b/absl/flags/internal/flag.h
index b060199e..146c3efc 100644
--- a/absl/flags/internal/flag.h
+++ b/absl/flags/internal/flag.h
@@ -624,6 +624,7 @@ class Flag {
absl::string_view Name() const { return impl_.Name(); }
std::string Filename() const { return impl_.Filename(); }
std::string Help() const { return impl_.Help(); }
+ // Do not use. To be removed.
bool IsSpecifiedOnCommandLine() const {
return impl_.IsSpecifiedOnCommandLine();
}
diff --git a/absl/flags/internal/private_handle_accessor.cc b/absl/flags/internal/private_handle_accessor.cc
index ec5776bb..64fe3166 100644
--- a/absl/flags/internal/private_handle_accessor.cc
+++ b/absl/flags/internal/private_handle_accessor.cc
@@ -28,6 +28,11 @@ std::unique_ptr<FlagStateInterface> PrivateHandleAccessor::SaveState(
return flag->SaveState();
}
+bool PrivateHandleAccessor::IsSpecifiedOnCommandLine(
+ const CommandLineFlag& flag) {
+ return flag.IsSpecifiedOnCommandLine();
+}
+
bool PrivateHandleAccessor::ValidateInputValue(const CommandLineFlag& flag,
absl::string_view value) {
return flag.ValidateInputValue(value);
diff --git a/absl/flags/internal/private_handle_accessor.h b/absl/flags/internal/private_handle_accessor.h
index fbb4409c..40591de4 100644
--- a/absl/flags/internal/private_handle_accessor.h
+++ b/absl/flags/internal/private_handle_accessor.h
@@ -33,6 +33,9 @@ class PrivateHandleAccessor {
// Access to CommandLineFlag::SaveState.
static std::unique_ptr<FlagStateInterface> SaveState(CommandLineFlag* flag);
+ // Access to CommandLineFlag::IsSpecifiedOnCommandLine.
+ static bool IsSpecifiedOnCommandLine(const CommandLineFlag& flag);
+
// Access to CommandLineFlag::ValidateInputValue.
static bool ValidateInputValue(const CommandLineFlag& flag,
absl::string_view value);
diff --git a/absl/flags/internal/type_erased.cc b/absl/flags/internal/type_erased.cc
index 3cfc9b2d..c13fb9b0 100644
--- a/absl/flags/internal/type_erased.cc
+++ b/absl/flags/internal/type_erased.cc
@@ -81,14 +81,6 @@ bool IsValidFlagValue(absl::string_view name, absl::string_view value) {
// --------------------------------------------------------------------
-bool SpecifiedOnCommandLine(absl::string_view name) {
- CommandLineFlag* flag = flags_internal::FindCommandLineFlag(name);
- if (flag != nullptr && !flag->IsRetired()) {
- return flag->IsSpecifiedOnCommandLine();
- }
- return false;
-}
-
} // namespace flags_internal
ABSL_NAMESPACE_END
} // namespace absl
diff --git a/absl/flags/internal/type_erased.h b/absl/flags/internal/type_erased.h
index ffe319ba..b43a0ff7 100644
--- a/absl/flags/internal/type_erased.h
+++ b/absl/flags/internal/type_erased.h
@@ -55,17 +55,6 @@ bool IsValidFlagValue(absl::string_view name, absl::string_view value);
//-----------------------------------------------------------------------------
-// Returns true iff a flag named "name" was specified on the command line
-// (either directly, or via one of --flagfile or --fromenv or --tryfromenv).
-//
-// Any non-command-line modification of the flag does not affect the
-// result of this function. So for example, if a flag was passed on
-// the command line but then reset via SET_FLAGS_DEFAULT, this
-// function will still return true.
-bool SpecifiedOnCommandLine(absl::string_view name);
-
-//-----------------------------------------------------------------------------
-
// If a flag with specified "name" exists and has type T, store
// its current value in *dst and return true. Else return false
// without touching *dst. T must obey all of the requirements for
diff --git a/absl/random/internal/BUILD.bazel b/absl/random/internal/BUILD.bazel
index 1c9dabb5..dc452816 100644
--- a/absl/random/internal/BUILD.bazel
+++ b/absl/random/internal/BUILD.bazel
@@ -37,9 +37,6 @@ cc_library(
hdrs = ["traits.h"],
copts = ABSL_DEFAULT_COPTS,
linkopts = ABSL_DEFAULT_LINKOPTS,
- visibility = [
- "//absl/random:__pkg__",
- ],
deps = ["//absl/base:config"],
)
@@ -48,9 +45,6 @@ cc_library(
hdrs = ["distribution_caller.h"],
copts = ABSL_DEFAULT_COPTS,
linkopts = ABSL_DEFAULT_LINKOPTS,
- visibility = [
- "//absl/random:__pkg__",
- ],
deps = ["//absl/base:config"],
)
@@ -76,9 +70,6 @@ cc_library(
],
copts = ABSL_DEFAULT_COPTS,
linkopts = ABSL_DEFAULT_LINKOPTS,
- visibility = [
- "//absl/random:__pkg__",
- ],
deps = ["//absl/base:config"],
)
@@ -517,9 +508,6 @@ cc_library(
name = "mock_overload_set",
testonly = 1,
hdrs = ["mock_overload_set.h"],
- visibility = [
- "//absl/random:__pkg__",
- ],
deps = [
"//absl/random:mocking_bit_gen",
"@com_google_googletest//:gtest",
@@ -669,6 +657,7 @@ cc_library(
deps = [
":platform",
":randen_engine",
+ "//absl/base:config",
"//absl/base:core_headers",
"//absl/base:raw_logging_internal",
],
diff --git a/absl/strings/cord.cc b/absl/strings/cord.cc
index 0403cc6e..1ddd6aec 100644
--- a/absl/strings/cord.cc
+++ b/absl/strings/cord.cc
@@ -20,6 +20,7 @@
#include <cstdio>
#include <cstdlib>
#include <iomanip>
+#include <iostream>
#include <limits>
#include <ostream>
#include <sstream>
diff --git a/absl/strings/cord.h b/absl/strings/cord.h
index 86ae76fd..3be8d7d8 100644
--- a/absl/strings/cord.h
+++ b/absl/strings/cord.h
@@ -65,7 +65,7 @@
#include <cstddef>
#include <cstdint>
#include <cstring>
-#include <iostream>
+#include <iosfwd>
#include <iterator>
#include <string>
#include <type_traits>
diff --git a/absl/strings/substitute.h b/absl/strings/substitute.h
index 92c47236..c6da4dc6 100644
--- a/absl/strings/substitute.h
+++ b/absl/strings/substitute.h
@@ -120,7 +120,9 @@ class Arg {
// representation. However, we can't really know, so we make the caller decide
// what to do.
Arg(char value) // NOLINT(runtime/explicit)
- : piece_(scratch_, 1) { scratch_[0] = value; }
+ : piece_(scratch_, 1) {
+ scratch_[0] = value;
+ }
Arg(short value) // NOLINT(*)
: piece_(scratch_,
numbers_internal::FastIntToBuffer(value, scratch_) - scratch_) {}
@@ -203,10 +205,11 @@ constexpr const char* SkipNumber(const char* format) {
}
constexpr int PlaceholderBitmask(const char* format) {
- return !*format ? 0 : *format != '$'
- ? PlaceholderBitmask(format + 1)
- : (CalculateOneBit(format + 1) |
- PlaceholderBitmask(SkipNumber(format + 1)));
+ return !*format
+ ? 0
+ : *format != '$' ? PlaceholderBitmask(format + 1)
+ : (CalculateOneBit(format + 1) |
+ PlaceholderBitmask(SkipNumber(format + 1)));
}
#endif // ABSL_BAD_CALL_IF
diff --git a/absl/synchronization/mutex.h b/absl/synchronization/mutex.h
index 961ff52b..876698ca 100644
--- a/absl/synchronization/mutex.h
+++ b/absl/synchronization/mutex.h
@@ -769,6 +769,8 @@ class Condition {
//
class CondVar {
public:
+ // A `CondVar` allocated on the heap or on the stack can use the this
+ // constructor.
CondVar();
~CondVar();
@@ -900,9 +902,11 @@ class ABSL_SCOPED_LOCKABLE ReleasableMutexLock {
};
#ifdef ABSL_INTERNAL_USE_NONPROD_MUTEX
+
inline constexpr Mutex::Mutex(absl::ConstInitType) : impl_(absl::kConstInit) {}
#else
+
inline Mutex::Mutex() : mu_(0) {
ABSL_TSAN_MUTEX_CREATE(this, __tsan_mutex_not_static);
}
@@ -910,7 +914,8 @@ inline Mutex::Mutex() : mu_(0) {
inline constexpr Mutex::Mutex(absl::ConstInitType) : mu_(0) {}
inline CondVar::CondVar() : cv_(0) {}
-#endif
+
+#endif // ABSL_INTERNAL_USE_NONPROD_MUTEX
// static
template <typename T>
diff --git a/absl/time/duration.cc b/absl/time/duration.cc
index f0182559..d0f1aadb 100644
--- a/absl/time/duration.cc
+++ b/absl/time/duration.cc
@@ -67,7 +67,9 @@
#include <string>
#include "absl/base/casts.h"
+#include "absl/base/macros.h"
#include "absl/numeric/int128.h"
+#include "absl/strings/strip.h"
#include "absl/time/time.h"
namespace absl {
@@ -800,23 +802,27 @@ namespace {
// A helper for ParseDuration() that parses a leading number from the given
// string and stores the result in *int_part/*frac_part/*frac_scale. The
// given string pointer is modified to point to the first unconsumed char.
-bool ConsumeDurationNumber(const char** dpp, int64_t* int_part,
+bool ConsumeDurationNumber(const char** dpp, const char* ep, int64_t* int_part,
int64_t* frac_part, int64_t* frac_scale) {
*int_part = 0;
*frac_part = 0;
*frac_scale = 1; // invariant: *frac_part < *frac_scale
const char* start = *dpp;
- for (; std::isdigit(**dpp); *dpp += 1) {
+ for (; *dpp != ep; *dpp += 1) {
const int d = **dpp - '0'; // contiguous digits
+ if (d < 0 || 10 <= d) break;
+
if (*int_part > kint64max / 10) return false;
*int_part *= 10;
if (*int_part > kint64max - d) return false;
*int_part += d;
}
const bool int_part_empty = (*dpp == start);
- if (**dpp != '.') return !int_part_empty;
- for (*dpp += 1; std::isdigit(**dpp); *dpp += 1) {
+ if (*dpp == ep || **dpp != '.') return !int_part_empty;
+
+ for (*dpp += 1; *dpp != ep; *dpp += 1) {
const int d = **dpp - '0'; // contiguous digits
+ if (d < 0 || 10 <= d) break;
if (*frac_scale <= kint64max / 10) {
*frac_part *= 10;
*frac_part += d;
@@ -830,32 +836,56 @@ bool ConsumeDurationNumber(const char** dpp, int64_t* int_part,
// ns, us, ms, s, m, h) from the given string and stores the resulting unit
// in "*unit". The given string pointer is modified to point to the first
// unconsumed char.
-bool ConsumeDurationUnit(const char** start, Duration* unit) {
- const char *s = *start;
- bool ok = true;
- if (strncmp(s, "ns", 2) == 0) {
- s += 2;
- *unit = Nanoseconds(1);
- } else if (strncmp(s, "us", 2) == 0) {
- s += 2;
- *unit = Microseconds(1);
- } else if (strncmp(s, "ms", 2) == 0) {
- s += 2;
- *unit = Milliseconds(1);
- } else if (strncmp(s, "s", 1) == 0) {
- s += 1;
- *unit = Seconds(1);
- } else if (strncmp(s, "m", 1) == 0) {
- s += 1;
- *unit = Minutes(1);
- } else if (strncmp(s, "h", 1) == 0) {
- s += 1;
- *unit = Hours(1);
- } else {
- ok = false;
+bool ConsumeDurationUnit(const char** start, const char* end, Duration* unit) {
+ size_t size = end - *start;
+ switch (size) {
+ case 0:
+ return false;
+ default:
+ switch (**start) {
+ case 'n':
+ if (*(*start + 1) == 's') {
+ *start += 2;
+ *unit = Nanoseconds(1);
+ return true;
+ }
+ break;
+ case 'u':
+ if (*(*start + 1) == 's') {
+ *start += 2;
+ *unit = Microseconds(1);
+ return true;
+ }
+ break;
+ case 'm':
+ if (*(*start + 1) == 's') {
+ *start += 2;
+ *unit = Milliseconds(1);
+ return true;
+ }
+ break;
+ default:
+ break;
+ }
+ ABSL_FALLTHROUGH_INTENDED;
+ case 1:
+ switch (**start) {
+ case 's':
+ *unit = Seconds(1);
+ *start += 1;
+ return true;
+ case 'm':
+ *unit = Minutes(1);
+ *start += 1;
+ return true;
+ case 'h':
+ *unit = Hours(1);
+ *start += 1;
+ return true;
+ default:
+ return false;
+ }
}
- *start = s;
- return ok;
}
} // namespace
@@ -865,39 +895,38 @@ bool ConsumeDurationUnit(const char** start, Duration* unit) {
// a possibly signed sequence of decimal numbers, each with optional
// fraction and a unit suffix, such as "300ms", "-1.5h" or "2h45m".
// Valid time units are "ns", "us" "ms", "s", "m", "h".
-bool ParseDuration(const std::string& dur_string, Duration* d) {
- const char* start = dur_string.c_str();
+bool ParseDuration(absl::string_view dur_sv, Duration* d) {
int sign = 1;
-
- if (*start == '-' || *start == '+') {
- sign = *start == '-' ? -1 : 1;
- ++start;
- }
-
- // Can't parse a duration from an empty string.
- if (*start == '\0') {
- return false;
+ if (absl::ConsumePrefix(&dur_sv, "-")) {
+ sign = -1;
+ } else {
+ absl::ConsumePrefix(&dur_sv, "+");
}
+ if (dur_sv.empty()) return false;
// Special case for a string of "0".
- if (*start == '0' && *(start + 1) == '\0') {
+ if (dur_sv == "0") {
*d = ZeroDuration();
return true;
}
- if (strcmp(start, "inf") == 0) {
+ if (dur_sv == "inf") {
*d = sign * InfiniteDuration();
return true;
}
+ const char* start = dur_sv.data();
+ const char* end = start + dur_sv.size();
+
Duration dur;
- while (*start != '\0') {
+ while (start != end) {
int64_t int_part;
int64_t frac_part;
int64_t frac_scale;
Duration unit;
- if (!ConsumeDurationNumber(&start, &int_part, &frac_part, &frac_scale) ||
- !ConsumeDurationUnit(&start, &unit)) {
+ if (!ConsumeDurationNumber(&start, end, &int_part, &frac_part,
+ &frac_scale) ||
+ !ConsumeDurationUnit(&start, end, &unit)) {
return false;
}
if (int_part != 0) dur += sign * int_part * unit;
@@ -908,7 +937,7 @@ bool ParseDuration(const std::string& dur_string, Duration* d) {
}
bool AbslParseFlag(absl::string_view text, Duration* dst, std::string*) {
- return ParseDuration(std::string(text), dst);
+ return ParseDuration(text, dst);
}
std::string AbslUnparseFlag(Duration d) { return FormatDuration(d); }
diff --git a/absl/time/format.cc b/absl/time/format.cc
index ee088f33..228940ed 100644
--- a/absl/time/format.cc
+++ b/absl/time/format.cc
@@ -13,9 +13,12 @@
// limitations under the License.
#include <string.h>
+
#include <cctype>
#include <cstdint>
+#include "absl/strings/match.h"
+#include "absl/strings/string_view.h"
#include "absl/time/internal/cctz/include/cctz/time_zone.h"
#include "absl/time/time.h"
@@ -71,12 +74,12 @@ absl::Time Join(const cctz_parts& parts) {
} // namespace
-std::string FormatTime(const std::string& format, absl::Time t,
+std::string FormatTime(absl::string_view format, absl::Time t,
absl::TimeZone tz) {
- if (t == absl::InfiniteFuture()) return kInfiniteFutureStr;
- if (t == absl::InfinitePast()) return kInfinitePastStr;
+ if (t == absl::InfiniteFuture()) return std::string(kInfiniteFutureStr);
+ if (t == absl::InfinitePast()) return std::string(kInfinitePastStr);
const auto parts = Split(t);
- return cctz::detail::format(format, parts.sec, parts.fem,
+ return cctz::detail::format(std::string(format), parts.sec, parts.fem,
cctz::time_zone(tz));
}
@@ -88,42 +91,50 @@ std::string FormatTime(absl::Time t) {
return absl::FormatTime(RFC3339_full, t, absl::LocalTimeZone());
}
-bool ParseTime(const std::string& format, const std::string& input,
+bool ParseTime(absl::string_view format, absl::string_view input,
absl::Time* time, std::string* err) {
return absl::ParseTime(format, input, absl::UTCTimeZone(), time, err);
}
// If the input string does not contain an explicit UTC offset, interpret
// the fields with respect to the given TimeZone.
-bool ParseTime(const std::string& format, const std::string& input,
+bool ParseTime(absl::string_view format, absl::string_view input,
absl::TimeZone tz, absl::Time* time, std::string* err) {
- const char* data = input.c_str();
- while (std::isspace(*data)) ++data;
-
- size_t inf_size = strlen(kInfiniteFutureStr);
- if (strncmp(data, kInfiniteFutureStr, inf_size) == 0) {
- const char* new_data = data + inf_size;
- while (std::isspace(*new_data)) ++new_data;
- if (*new_data == '\0') {
- *time = InfiniteFuture();
- return true;
+ auto strip_leading_space = [](absl::string_view* sv) {
+ while (!sv->empty()) {
+ if (!std::isspace(sv->front())) return;
+ sv->remove_prefix(1);
}
- }
-
- inf_size = strlen(kInfinitePastStr);
- if (strncmp(data, kInfinitePastStr, inf_size) == 0) {
- const char* new_data = data + inf_size;
- while (std::isspace(*new_data)) ++new_data;
- if (*new_data == '\0') {
- *time = InfinitePast();
- return true;
+ };
+
+ // Portable toolchains means we don't get nice constexpr here.
+ struct Literal {
+ const char* name;
+ size_t size;
+ absl::Time value;
+ };
+ static Literal literals[] = {
+ {kInfiniteFutureStr, strlen(kInfiniteFutureStr), InfiniteFuture()},
+ {kInfinitePastStr, strlen(kInfinitePastStr), InfinitePast()},
+ };
+ strip_leading_space(&input);
+ for (const auto& lit : literals) {
+ if (absl::StartsWith(input, absl::string_view(lit.name, lit.size))) {
+ absl::string_view tail = input;
+ tail.remove_prefix(lit.size);
+ strip_leading_space(&tail);
+ if (tail.empty()) {
+ *time = lit.value;
+ return true;
+ }
}
}
std::string error;
cctz_parts parts;
- const bool b = cctz::detail::parse(format, input, cctz::time_zone(tz),
- &parts.sec, &parts.fem, &error);
+ const bool b =
+ cctz::detail::parse(std::string(format), std::string(input),
+ cctz::time_zone(tz), &parts.sec, &parts.fem, &error);
if (b) {
*time = Join(parts);
} else if (err != nullptr) {
@@ -134,8 +145,7 @@ bool ParseTime(const std::string& format, const std::string& input,
// Functions required to support absl::Time flags.
bool AbslParseFlag(absl::string_view text, absl::Time* t, std::string* error) {
- return absl::ParseTime(RFC3339_full, std::string(text), absl::UTCTimeZone(),
- t, error);
+ return absl::ParseTime(RFC3339_full, text, absl::UTCTimeZone(), t, error);
}
std::string AbslUnparseFlag(absl::Time t) {
diff --git a/absl/time/time.h b/absl/time/time.h
index 152f3ff8..b456a13e 100644
--- a/absl/time/time.h
+++ b/absl/time/time.h
@@ -545,7 +545,7 @@ inline std::ostream& operator<<(std::ostream& os, Duration d) {
// suffix. The valid suffixes are "ns", "us" "ms", "s", "m", and "h".
// Simple examples include "300ms", "-1.5h", and "2h45m". Parses "0" as
// `ZeroDuration()`. Parses "inf" and "-inf" as +/- `InfiniteDuration()`.
-bool ParseDuration(const std::string& dur_string, Duration* d);
+bool ParseDuration(absl::string_view dur_string, Duration* d);
// Support for flag values of type Duration. Duration flags must be specified
// in a format that is valid input for absl::ParseDuration().
@@ -1021,13 +1021,13 @@ class TimeZone {
// Loads the named zone. May perform I/O on the initial load of the named
// zone. If the name is invalid, or some other kind of error occurs, returns
// `false` and `*tz` is set to the UTC time zone.
-inline bool LoadTimeZone(const std::string& name, TimeZone* tz) {
+inline bool LoadTimeZone(absl::string_view name, TimeZone* tz) {
if (name == "localtime") {
*tz = TimeZone(time_internal::cctz::local_time_zone());
return true;
}
time_internal::cctz::time_zone cz;
- const bool b = time_internal::cctz::load_time_zone(name, &cz);
+ const bool b = time_internal::cctz::load_time_zone(std::string(name), &cz);
*tz = TimeZone(cz);
return b;
}
@@ -1252,7 +1252,7 @@ ABSL_DLL extern const char
// `absl::InfinitePast()`, the returned string will be exactly "infinite-past".
// In both cases the given format string and `absl::TimeZone` are ignored.
//
-std::string FormatTime(const std::string& format, Time t, TimeZone tz);
+std::string FormatTime(absl::string_view format, Time t, TimeZone tz);
// Convenience functions that format the given time using the RFC3339_full
// format. The first overload uses the provided TimeZone, while the second
@@ -1313,7 +1313,7 @@ inline std::ostream& operator<<(std::ostream& os, Time t) {
// If the input string is "infinite-past", the returned `absl::Time` will be
// `absl::InfinitePast()` and `true` will be returned.
//
-bool ParseTime(const std::string& format, const std::string& input, Time* time,
+bool ParseTime(absl::string_view format, absl::string_view input, Time* time,
std::string* err);
// Like ParseTime() above, but if the format string does not contain a UTC
@@ -1323,7 +1323,7 @@ bool ParseTime(const std::string& format, const std::string& input, Time* time,
// of ambiguity or non-existence, in which case the "pre" time (as defined
// by TimeZone::TimeInfo) is returned. For these reasons we recommend that
// all date/time strings include a UTC offset so they're context independent.
-bool ParseTime(const std::string& format, const std::string& input, TimeZone tz,
+bool ParseTime(absl::string_view format, absl::string_view input, TimeZone tz,
Time* time, std::string* err);
// ============================================================================
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-25 17:27:56 +0000