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LibJS: Convert NativeFunction::{call,construct}() to ThrowCompletionOr

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Both at the same time because many of them call construct() in call()
and I'm not keen on adding a bunch of temporary plumbing to turn
exceptions into throw completions.
Also changes the return value of construct() to Object* instead of Value
as it always needs to return an object; allowing an arbitrary Value is a
massive foot gun.
This commit is contained in:
Linus Groh
2021-10-20 21:16:30 +01:00
parent 0881f8160f
commit 5832de62fe
Notes: sideshowbarker 2024-07-18 02:06:32 +09:00 
Author: https://github.com/linusg
Commit: https://github.com/SerenityOS/serenity/commit/5832de62fe5
Pull-request: https://github.com/SerenityOS/serenity/pull/10548
Reviewed-by: https://github.com/IdanHo ✅
99 changed files with 597 additions and 669 deletions
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13
Userland/Libraries/LibJS/Runtime/ArrayBufferConstructor.cpp
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@@ -40,15 +40,14 @@ ArrayBufferConstructor::~ArrayBufferConstructor()
}
// 25.1.3.1 ArrayBuffer ( length ), https://tc39.es/ecma262/#sec-arraybuffer-length
Value ArrayBufferConstructor::call()
ThrowCompletionOr<Value> ArrayBufferConstructor::call()
{
auto& vm = this->vm();
vm.throw_exception<TypeError>(global_object(), ErrorType::ConstructorWithoutNew, vm.names.ArrayBuffer);
return {};
return vm.throw_completion<TypeError>(global_object(), ErrorType::ConstructorWithoutNew, vm.names.ArrayBuffer);
}
// 25.1.3.1 ArrayBuffer ( length ), https://tc39.es/ecma262/#sec-arraybuffer-length
Value ArrayBufferConstructor::construct(FunctionObject& new_target)
ThrowCompletionOr<Object*> ArrayBufferConstructor::construct(FunctionObject& new_target)
{
auto& vm = this->vm();
auto byte_length_or_error = vm.argument(0).to_index(global_object());
@@ -57,11 +56,11 @@ Value ArrayBufferConstructor::construct(FunctionObject& new_target)
if (error.value().is_object() && is<RangeError>(error.value().as_object())) {
// Re-throw more specific RangeError
vm.clear_exception();
vm.throw_exception<RangeError>(global_object(), ErrorType::InvalidLength, "array buffer");
return vm.throw_completion<RangeError>(global_object(), ErrorType::InvalidLength, "array buffer");
}
return {};
return error;
}
return TRY_OR_DISCARD(allocate_array_buffer(global_object(), new_target, byte_length_or_error.release_value()));
return TRY(allocate_array_buffer(global_object(), new_target, byte_length_or_error.release_value()));
}
// 25.1.4.1 ArrayBuffer.isView ( arg ), https://tc39.es/ecma262/#sec-arraybuffer.isview