diff options
author | Marcin Kowalczyk <qrczak@google.com> | 2022-10-05 07:42:50 -0700 |
---|---|---|
committer | Copybara-Service <copybara-worker@google.com> | 2022-10-05 07:43:33 -0700 |
commit | b3162b1da62711c663d0025e2eabeb83fd1f2728 (patch) | |
tree | aa3eca5757799729c8302553b20196e0c0386f34 /absl | |
parent | d24156f63ca6d44a0dc05e260ad7810b2fcf3405 (diff) |
Make sinks provided to `AbslStringify()` usable with `absl::Format()`.
Such sinks must define ADL-callable `AbslFormatFlush()`. It can just forward to
`Append()`.
PiperOrigin-RevId: 479043790
Change-Id: I5d7d80ca1e17adf03b77726df8a52e2b4e9196ce
Diffstat (limited to 'absl')
-rw-r--r-- | absl/strings/BUILD.bazel | 3 | ||||
-rw-r--r-- | absl/strings/CMakeLists.txt | 1 | ||||
-rw-r--r-- | absl/strings/str_cat.h | 5 | ||||
-rw-r--r-- | absl/strings/str_cat_test.cc | 18 | ||||
-rw-r--r-- | absl/strings/str_format.h | 5 | ||||
-rw-r--r-- | absl/strings/str_format_test.cc | 17 |
6 files changed, 47 insertions, 2 deletions
diff --git a/absl/strings/BUILD.bazel b/absl/strings/BUILD.bazel index 5a40887e..5b12c010 100644 --- a/absl/strings/BUILD.bazel +++ b/absl/strings/BUILD.bazel @@ -963,8 +963,8 @@ cc_test( copts = ABSL_TEST_COPTS, visibility = ["//visibility:private"], deps = [ + ":str_format", ":strings", - "//absl/base:core_headers", "@com_google_googletest//:gtest_main", ], ) @@ -1164,7 +1164,6 @@ cc_test( ":cord", ":str_format", ":strings", - "//absl/base:core_headers", "@com_google_googletest//:gtest_main", ], ) diff --git a/absl/strings/CMakeLists.txt b/absl/strings/CMakeLists.txt index e1c2093a..01f86184 100644 --- a/absl/strings/CMakeLists.txt +++ b/absl/strings/CMakeLists.txt @@ -281,6 +281,7 @@ absl_cc_test( ${ABSL_TEST_COPTS} DEPS absl::strings + absl::str_format absl::core_headers GTest::gmock_main ) diff --git a/absl/strings/str_cat.h b/absl/strings/str_cat.h index 05728ab5..6ee88f14 100644 --- a/absl/strings/str_cat.h +++ b/absl/strings/str_cat.h @@ -85,6 +85,11 @@ class StringifySink { bool PutPaddedString(string_view v, int width, int precision, bool left); + // Support `absl::Format(&sink, format, args...)`. + friend void AbslFormatFlush(StringifySink* sink, absl::string_view v) { + sink->Append(v); + } + template <typename T> friend string_view ExtractStringification(StringifySink& sink, const T& v); diff --git a/absl/strings/str_cat_test.cc b/absl/strings/str_cat_test.cc index 868b9bce..1b3b7ece 100644 --- a/absl/strings/str_cat_test.cc +++ b/absl/strings/str_cat_test.cc @@ -21,6 +21,7 @@ #include <vector> #include "gtest/gtest.h" +#include "absl/strings/str_format.h" #include "absl/strings/substitute.h" #ifdef __ANDROID__ @@ -632,4 +633,21 @@ TEST(StrCat, AbslStringifyExample) { EXPECT_EQ(absl::StrCat("a ", p, " z"), "a (10, 20) z"); } +struct PointStringifyUsingFormat { + template <typename FormatSink> + friend void AbslStringify(FormatSink& sink, + const PointStringifyUsingFormat& p) { + absl::Format(&sink, "(%g, %g)", p.x, p.y); + } + + double x = 10.0; + double y = 20.0; +}; + +TEST(StrCat, AbslStringifyExampleUsingFormat) { + PointStringifyUsingFormat p; + EXPECT_EQ(absl::StrCat(p), "(10, 20)"); + EXPECT_EQ(absl::StrCat("a ", p, " z"), "a (10, 20) z"); +} + } // namespace diff --git a/absl/strings/str_format.h b/absl/strings/str_format.h index e6537ea0..ffbcb9af 100644 --- a/absl/strings/str_format.h +++ b/absl/strings/str_format.h @@ -789,6 +789,11 @@ class FormatSink { return sink_->PutPaddedString(v, width, precision, left); } + // Support `absl::Format(&sink, format, args...)`. + friend void AbslFormatFlush(FormatSink* sink, absl::string_view v) { + sink->Append(v); + } + private: friend str_format_internal::FormatSinkImpl; explicit FormatSink(str_format_internal::FormatSinkImpl* s) : sink_(s) {} diff --git a/absl/strings/str_format_test.cc b/absl/strings/str_format_test.cc index 0c4f10c8..62ed262d 100644 --- a/absl/strings/str_format_test.cc +++ b/absl/strings/str_format_test.cc @@ -1118,6 +1118,23 @@ TEST_F(FormatExtensionTest, AbslStringifyExample) { PointStringify p; EXPECT_EQ(absl::StrFormat("a %v z", p), "a (10, 20) z"); } + +struct PointStringifyUsingFormat { + template <typename FormatSink> + friend void AbslStringify(FormatSink& sink, + const PointStringifyUsingFormat& p) { + absl::Format(&sink, "(%g, %g)", p.x, p.y); + } + + double x = 10.0; + double y = 20.0; +}; + +TEST_F(FormatExtensionTest, AbslStringifyExampleUsingFormat) { + PointStringifyUsingFormat p; + EXPECT_EQ(absl::StrFormat("a %v z", p), "a (10, 20) z"); +} + } // namespace // Some codegen thunks that we can use to easily dump the generated assembly for |