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-rw-r--r--absl/status/BUILD.bazel2
-rw-r--r--absl/status/CMakeLists.txt1
-rw-r--r--absl/status/statusor.cc36
-rw-r--r--absl/status/statusor.h28
-rw-r--r--absl/status/statusor_test.cc70
5 files changed, 109 insertions, 28 deletions
diff --git a/absl/status/BUILD.bazel b/absl/status/BUILD.bazel
index 189bd73d..30df22ae 100644
--- a/absl/status/BUILD.bazel
+++ b/absl/status/BUILD.bazel
@@ -78,6 +78,7 @@ cc_library(
copts = ABSL_DEFAULT_COPTS,
deps = [
":status",
+ "//absl/base",
"//absl/base:core_headers",
"//absl/base:raw_logging_internal",
"//absl/meta:type_traits",
@@ -96,6 +97,7 @@ cc_test(
":statusor",
"//absl/base",
"//absl/memory",
+ "//absl/strings",
"//absl/types:any",
"//absl/utility",
"@com_google_googletest//:gtest_main",
diff --git a/absl/status/CMakeLists.txt b/absl/status/CMakeLists.txt
index 1248dff0..43898564 100644
--- a/absl/status/CMakeLists.txt
+++ b/absl/status/CMakeLists.txt
@@ -64,6 +64,7 @@ absl_cc_library(
COPTS
${ABSL_DEFAULT_COPTS}
DEPS
+ absl::base
absl::status
absl::core_headers
absl::raw_logging_internal
diff --git a/absl/status/statusor.cc b/absl/status/statusor.cc
index b954b45e..96642b34 100644
--- a/absl/status/statusor.cc
+++ b/absl/status/statusor.cc
@@ -16,6 +16,7 @@
#include <cstdlib>
#include <utility>
+#include "absl/base/call_once.h"
#include "absl/base/internal/raw_logging.h"
#include "absl/status/status.h"
#include "absl/strings/str_cat.h"
@@ -26,13 +27,44 @@ ABSL_NAMESPACE_BEGIN
BadStatusOrAccess::BadStatusOrAccess(absl::Status status)
: status_(std::move(status)) {}
-BadStatusOrAccess::~BadStatusOrAccess() = default;
+BadStatusOrAccess::BadStatusOrAccess(const BadStatusOrAccess& other)
+ : status_(other.status_) {}
+
+BadStatusOrAccess& BadStatusOrAccess::operator=(
+ const BadStatusOrAccess& other) {
+ // Ensure assignment is correct regardless of whether this->InitWhat() has
+ // already been called.
+ other.InitWhat();
+ status_ = other.status_;
+ what_ = other.what_;
+ return *this;
+}
+
+BadStatusOrAccess& BadStatusOrAccess::operator=(BadStatusOrAccess&& other) {
+ // Ensure assignment is correct regardless of whether this->InitWhat() has
+ // already been called.
+ other.InitWhat();
+ status_ = std::move(other.status_);
+ what_ = std::move(other.what_);
+ return *this;
+}
+
+BadStatusOrAccess::BadStatusOrAccess(BadStatusOrAccess&& other)
+ : status_(std::move(other.status_)) {}
+
const char* BadStatusOrAccess::what() const noexcept {
- return "Bad StatusOr access";
+ InitWhat();
+ return what_.c_str();
}
const absl::Status& BadStatusOrAccess::status() const { return status_; }
+void BadStatusOrAccess::InitWhat() const {
+ absl::call_once(init_what_, [this] {
+ what_ = absl::StrCat("Bad StatusOr access: ", status_.ToString());
+ });
+}
+
namespace internal_statusor {
void Helper::HandleInvalidStatusCtorArg(absl::Status* status) {
diff --git a/absl/status/statusor.h b/absl/status/statusor.h
index b7c55cc8..235a3433 100644
--- a/absl/status/statusor.h
+++ b/absl/status/statusor.h
@@ -44,6 +44,7 @@
#include <utility>
#include "absl/base/attributes.h"
+#include "absl/base/call_once.h"
#include "absl/meta/type_traits.h"
#include "absl/status/internal/statusor_internal.h"
#include "absl/status/status.h"
@@ -72,13 +73,18 @@ ABSL_NAMESPACE_BEGIN
class BadStatusOrAccess : public std::exception {
public:
explicit BadStatusOrAccess(absl::Status status);
- ~BadStatusOrAccess() override;
+ ~BadStatusOrAccess() override = default;
+
+ BadStatusOrAccess(const BadStatusOrAccess& other);
+ BadStatusOrAccess& operator=(const BadStatusOrAccess& other);
+ BadStatusOrAccess(BadStatusOrAccess&& other);
+ BadStatusOrAccess& operator=(BadStatusOrAccess&& other);
// BadStatusOrAccess::what()
//
// Returns the associated explanatory string of the `absl::StatusOr<T>`
- // object's error code. This function only returns the string literal "Bad
- // StatusOr Access" for cases when evaluating general exceptions.
+ // object's error code. This function contains information about the failing
+ // status, but its exact formatting may change and should not be depended on.
//
// The pointer of this string is guaranteed to be valid until any non-const
// function is invoked on the exception object.
@@ -91,7 +97,11 @@ class BadStatusOrAccess : public std::exception {
const absl::Status& status() const;
private:
+ void InitWhat() const;
+
absl::Status status_;
+ mutable absl::once_flag init_what_;
+ mutable std::string what_;
};
// Returned StatusOr objects may not be ignored.
@@ -437,8 +447,7 @@ class StatusOr : private internal_statusor::StatusOrData<T>,
T, U&&>>>>>::value,
int> = 0>
StatusOr(U&& u) // NOLINT
- : StatusOr(absl::in_place, std::forward<U>(u)) {
- }
+ : StatusOr(absl::in_place, std::forward<U>(u)) {}
template <
typename U = T,
@@ -457,8 +466,7 @@ class StatusOr : private internal_statusor::StatusOrData<T>,
absl::negation<std::is_convertible<U&&, T>>>::value,
int> = 0>
explicit StatusOr(U&& u) // NOLINT
- : StatusOr(absl::in_place, std::forward<U>(u)) {
- }
+ : StatusOr(absl::in_place, std::forward<U>(u)) {}
// StatusOr<T>::ok()
//
@@ -481,7 +489,7 @@ class StatusOr : private internal_statusor::StatusOrData<T>,
// Returns a reference to the current `absl::Status` contained within the
// `absl::StatusOr<T>`. If `absl::StatusOr<T>` contains a `T`, then this
// function returns `absl::OkStatus()`.
- const Status& status() const &;
+ const Status& status() const&;
Status status() &&;
// StatusOr<T>::value()
@@ -661,7 +669,9 @@ StatusOr<T>::StatusOr(absl::in_place_t, std::initializer_list<U> ilist,
: Base(absl::in_place, ilist, std::forward<Args>(args)...) {}
template <typename T>
-const Status& StatusOr<T>::status() const & { return this->status_; }
+const Status& StatusOr<T>::status() const& {
+ return this->status_;
+}
template <typename T>
Status StatusOr<T>::status() && {
return ok() ? OkStatus() : std::move(this->status_);
diff --git a/absl/status/statusor_test.cc b/absl/status/statusor_test.cc
index c2e8fb7e..7cae90e1 100644
--- a/absl/status/statusor_test.cc
+++ b/absl/status/statusor_test.cc
@@ -17,6 +17,7 @@
#include <array>
#include <initializer_list>
#include <memory>
+#include <string>
#include <type_traits>
#include <utility>
@@ -25,6 +26,7 @@
#include "absl/base/casts.h"
#include "absl/memory/memory.h"
#include "absl/status/status.h"
+#include "absl/strings/string_view.h"
#include "absl/types/any.h"
#include "absl/utility/utility.h"
@@ -34,6 +36,7 @@ using ::testing::AllOf;
using ::testing::AnyWith;
using ::testing::ElementsAre;
using ::testing::Field;
+using ::testing::HasSubstr;
using ::testing::Ne;
using ::testing::Not;
using ::testing::Pointee;
@@ -257,9 +260,9 @@ TEST(StatusOr, TestMoveOnlyInitializationFromTemporaryByValueOrDie) {
TEST(StatusOr, TestValueOrDieOverloadForConstTemporary) {
static_assert(
- std::is_same<const int&&,
- decltype(
- std::declval<const absl::StatusOr<int>&&>().value())>(),
+ std::is_same<
+ const int&&,
+ decltype(std::declval<const absl::StatusOr<int>&&>().value())>(),
"value() for const temporaries should return const T&&");
}
@@ -303,20 +306,57 @@ TEST(StatusOr, StatusCtorForwards) {
EXPECT_NE(status.message(), "Some error");
}
+TEST(BadStatusOrAccessTest, CopyConstructionWhatOk) {
+ absl::Status error =
+ absl::InternalError("some arbitrary message too big for the sso buffer");
+ absl::BadStatusOrAccess e1{error};
+ absl::BadStatusOrAccess e2{e1};
+ EXPECT_THAT(e1.what(), HasSubstr(error.ToString()));
+ EXPECT_THAT(e2.what(), HasSubstr(error.ToString()));
+}
+
+TEST(BadStatusOrAccessTest, CopyAssignmentWhatOk) {
+ absl::Status error =
+ absl::InternalError("some arbitrary message too big for the sso buffer");
+ absl::BadStatusOrAccess e1{error};
+ absl::BadStatusOrAccess e2{absl::InternalError("other")};
+ e2 = e1;
+ EXPECT_THAT(e1.what(), HasSubstr(error.ToString()));
+ EXPECT_THAT(e2.what(), HasSubstr(error.ToString()));
+}
+
+TEST(BadStatusOrAccessTest, MoveConstructionWhatOk) {
+ absl::Status error =
+ absl::InternalError("some arbitrary message too big for the sso buffer");
+ absl::BadStatusOrAccess e1{error};
+ absl::BadStatusOrAccess e2{std::move(e1)};
+ EXPECT_THAT(e2.what(), HasSubstr(error.ToString()));
+}
+
+TEST(BadStatusOrAccessTest, MoveAssignmentWhatOk) {
+ absl::Status error =
+ absl::InternalError("some arbitrary message too big for the sso buffer");
+ absl::BadStatusOrAccess e1{error};
+ absl::BadStatusOrAccess e2{absl::InternalError("other")};
+ e2 = std::move(e1);
+ EXPECT_THAT(e2.what(), HasSubstr(error.ToString()));
+}
+
// Define `EXPECT_DEATH_OR_THROW` to test the behavior of `StatusOr::value`,
// which either throws `BadStatusOrAccess` or `LOG(FATAL)` based on whether
// exceptions are enabled.
#ifdef ABSL_HAVE_EXCEPTIONS
-#define EXPECT_DEATH_OR_THROW(statement, status_) \
- EXPECT_THROW( \
- { \
- try { \
- statement; \
- } catch (const absl::BadStatusOrAccess& e) { \
- EXPECT_EQ(e.status(), status_); \
- throw; \
- } \
- }, \
+#define EXPECT_DEATH_OR_THROW(statement, status_) \
+ EXPECT_THROW( \
+ { \
+ try { \
+ statement; \
+ } catch (const absl::BadStatusOrAccess& e) { \
+ EXPECT_EQ(e.status(), status_); \
+ EXPECT_THAT(e.what(), HasSubstr(e.status().ToString())); \
+ throw; \
+ } \
+ }, \
absl::BadStatusOrAccess);
#else // ABSL_HAVE_EXCEPTIONS
#define EXPECT_DEATH_OR_THROW(statement, status) \
@@ -412,8 +452,6 @@ TEST(StatusOr, TestStatusCtor) {
EXPECT_EQ(thing.status().code(), absl::StatusCode::kCancelled);
}
-
-
TEST(StatusOr, TestValueCtor) {
const int kI = 4;
const absl::StatusOr<int> thing(kI);
@@ -1300,8 +1338,6 @@ TEST(StatusOr, TestPointerDefaultCtor) {
EXPECT_EQ(thing.status().code(), absl::StatusCode::kUnknown);
}
-
-
TEST(StatusOr, TestPointerStatusCtor) {
absl::StatusOr<int*> thing(absl::CancelledError());
EXPECT_FALSE(thing.ok());
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-16 14:08:27 +0000