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LibJS: Implement the Error Cause proposal

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Currently stage 3. https://github.com/tc39/proposal-error-cause
This commit is contained in:
Linus Groh 2021-06-11 20:40:08 +01:00
parent 8d77a3297a
commit 862ba64037
11 changed files with 130 additions and 42 deletions
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33
Userland/Libraries/LibJS/Runtime/ErrorConstructor.cpp
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@ -31,13 +31,23 @@ Value ErrorConstructor::call()
Value ErrorConstructor::construct(Function&)
{
auto& vm = this->vm();
String message;
// FIXME: Use OrdinaryCreateFromConstructor(newTarget, "%Error.prototype%")
auto* error = Error::create(global_object());
u8 attr = Attribute::Writable | Attribute::Configurable;
if (!vm.argument(0).is_undefined()) {
message = vm.argument(0).to_string(global_object());
auto message = vm.argument(0).to_string(global_object());
if (vm.exception())
return {};
error->define_property(vm.names.message, js_string(vm, message), attr);
}
return Error::create(global_object(), message);
error->install_error_cause(vm.argument(1));
if (vm.exception())
return {};
return error;
}
#define __JS_ENUMERATE(ClassName, snake_name, PrototypeName, ConstructorName, ArrayType) \
@ -64,13 +74,24 @@ Value ErrorConstructor::construct(Function&)
Value ConstructorName::construct(Function&) \
{ \
auto& vm = this->vm(); \
String message = ""; \
/* FIXME: Use OrdinaryCreateFromConstructor( \
* FIXME: newTarget, "%NativeError.prototype%"). */ \
auto* error = ClassName::create(global_object()); \
\
u8 attr = Attribute::Writable | Attribute::Configurable; \
\
if (!vm.argument(0).is_undefined()) { \
message = vm.argument(0).to_string(global_object()); \
auto message = vm.argument(0).to_string(global_object()); \
if (vm.exception()) \
return {}; \
error->define_property(vm.names.message, js_string(vm, message), attr); \
} \
return ClassName::create(global_object(), message); \
\
error->install_error_cause(vm.argument(1)); \
if (vm.exception()) \
return {}; \
\
return error; \
}
JS_ENUMERATE_NATIVE_ERRORS