diff options
Diffstat (limited to 'third_party/abseil-cpp/absl/strings/cord_test_helpers.h')
-rw-r--r-- | third_party/abseil-cpp/absl/strings/cord_test_helpers.h | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/third_party/abseil-cpp/absl/strings/cord_test_helpers.h b/third_party/abseil-cpp/absl/strings/cord_test_helpers.h index f1036e3b13..31a1dc8980 100644 --- a/third_party/abseil-cpp/absl/strings/cord_test_helpers.h +++ b/third_party/abseil-cpp/absl/strings/cord_test_helpers.h @@ -17,11 +17,73 @@ #ifndef ABSL_STRINGS_CORD_TEST_HELPERS_H_ #define ABSL_STRINGS_CORD_TEST_HELPERS_H_ +#include <cstdint> +#include <iostream> +#include <string> + +#include "absl/base/config.h" #include "absl/strings/cord.h" +#include "absl/strings/internal/cord_internal.h" +#include "absl/strings/string_view.h" namespace absl { ABSL_NAMESPACE_BEGIN +// Cord sizes relevant for testing +enum class TestCordSize { + // An empty value + kEmpty = 0, + + // An inlined string value + kInlined = cord_internal::kMaxInline / 2 + 1, + + // 'Well known' SSO lengths (excluding terminating zero). + // libstdcxx has a maximum SSO of 15, libc++ has a maximum SSO of 22. + kStringSso1 = 15, + kStringSso2 = 22, + + // A string value which is too large to fit in inlined data, but small enough + // such that Cord prefers copying the value if possible, i.e.: not stealing + // std::string inputs, or referencing existing CordReps on Append, etc. + kSmall = cord_internal::kMaxBytesToCopy / 2 + 1, + + // A string value large enough that Cord prefers to reference or steal from + // existing inputs rather than copying contents of the input. + kMedium = cord_internal::kMaxFlatLength / 2 + 1, + + // A string value large enough to cause it to be stored in mutliple flats. + kLarge = cord_internal::kMaxFlatLength * 4 +}; + +// To string helper +inline absl::string_view ToString(TestCordSize size) { + switch (size) { + case TestCordSize::kEmpty: + return "Empty"; + case TestCordSize::kInlined: + return "Inlined"; + case TestCordSize::kSmall: + return "Small"; + case TestCordSize::kStringSso1: + return "StringSso1"; + case TestCordSize::kStringSso2: + return "StringSso2"; + case TestCordSize::kMedium: + return "Medium"; + case TestCordSize::kLarge: + return "Large"; + } + return "???"; +} + +// Returns the length matching the specified size +inline size_t Length(TestCordSize size) { return static_cast<size_t>(size); } + +// Stream output helper +inline std::ostream& operator<<(std::ostream& stream, TestCordSize size) { + return stream << ToString(size); +} + // Creates a multi-segment Cord from an iterable container of strings. The // resulting Cord is guaranteed to have one segment for every string in the // container. This allows code to be unit tested with multi-segment Cord |