diff options
Diffstat (limited to 'Userland/Libraries/LibJS')
| -rw-r--r-- | Userland/Libraries/LibJS/Runtime/Completion.h | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/Userland/Libraries/LibJS/Runtime/Completion.h b/Userland/Libraries/LibJS/Runtime/Completion.h index 2d61864e5a..b052273e5f 100644 --- a/Userland/Libraries/LibJS/Runtime/Completion.h +++ b/Userland/Libraries/LibJS/Runtime/Completion.h @@ -10,6 +10,7 @@ #include <AK/DeprecatedFlyString.h> #include <AK/Optional.h> #include <AK/Try.h> +#include <AK/TypeCasts.h> #include <AK/Variant.h> #include <LibJS/Runtime/ErrorTypes.h> #include <LibJS/Runtime/Value.h> @@ -30,6 +31,26 @@ namespace JS { _temporary_result.release_value(); \ }) +#define MUST_OR_THROW_OOM(expression) \ + ({ \ + /* Ignore -Wshadow to allow nesting the macro. */ \ + AK_IGNORE_DIAGNOSTIC("-Wshadow", \ + auto _temporary_result = (expression)); \ + if (_temporary_result.is_error()) { \ + auto _completion = _temporary_result.release_error(); \ + \ + /* We can't explicitly check for OOM because InternalError does not store the ErrorType */ \ + VERIFY(_completion.value().has_value()); \ + VERIFY(_completion.value()->is_object()); \ + VERIFY(is<JS::InternalError>(_completion.value()->as_object())); \ + \ + return _completion; \ + } \ + static_assert(!::AK::Detail::IsLvalueReference<decltype(_temporary_result.release_value())>, \ + "Do not return a reference from a fallible expression"); \ + _temporary_result.release_value(); \ + }) + // 6.2.3 The Completion Record Specification Type, https://tc39.es/ecma262/#sec-completion-record-specification-type class [[nodiscard]] Completion { public: |