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LibJS+Everywhere: Convert JS::Error to String

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This includes an Error::create overload to create an Error from a UTF-8
StringView. If creating a String from that view fails, the factory will
return an OOM InternalError instead. VM::throw_completion can also make
use of this overload via its perfect forwarding.
This commit is contained in:
Timothy Flynn 2023-02-16 14:09:11 -05:00 • committed by Tim Flynn
parent 153b793638
commit 88814acbd3
36 changed files with 198 additions and 151 deletions
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2
Userland/Libraries/LibWeb/Bindings/FetchMethod.cpp
View file

@ -219,7 +219,7 @@ JS::ThrowCompletionOr<JS::Value> fetch(JS::VM& vm)
}
return record_union_type;
}
return vm.throw_completion<JS::TypeError>("No union types matched");
return vm.throw_completion<JS::TypeError>("No union types matched"sv);
};
Optional<Variant<Vector<Vector<DeprecatedString>>, OrderedHashMap<DeprecatedString, DeprecatedString>>> headers_value;
if (!headers_property_value.is_nullish())

2
Userland/Libraries/LibWeb/Bindings/MainThreadVM.cpp
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@ -68,7 +68,7 @@ JS::VM& main_thread_vm()
vm->host_ensure_can_add_private_element = [](JS::Object const& object) -> JS::ThrowCompletionOr<void> {
// 1. If O is a WindowProxy object, or implements Location, then return Completion { [[Type]]: throw, [[Value]]: a new TypeError }.
if (is<HTML::WindowProxy>(object) || is<HTML::Location>(object))
return vm->throw_completion<JS::TypeError>("Cannot add private elements to window or location object");
return vm->throw_completion<JS::TypeError>("Cannot add private elements to window or location object"sv);
// 2. Return NormalCompletion(unused).
return {};

2
Userland/Libraries/LibWeb/Fetch/Body.cpp
View file

@ -148,7 +148,7 @@ JS::NonnullGCPtr<JS::Promise> consume_body(JS::Realm& realm, BodyMixin const& ob
// 1. If object is unusable, then return a promise rejected with a TypeError.
if (object.is_unusable()) {
auto promise_capability = WebIDL::create_rejected_promise(realm, JS::TypeError::create(realm, "Body is unusable"sv));
auto promise_capability = WebIDL::create_rejected_promise(realm, JS::TypeError::create(realm, "Body is unusable"sv).release_allocated_value_but_fixme_should_propagate_errors());
return verify_cast<JS::Promise>(*promise_capability->promise().ptr());
}

2
Userland/Libraries/LibWeb/Fetch/FetchMethod.cpp
View file

@ -100,7 +100,7 @@ JS::NonnullGCPtr<JS::Promise> fetch_impl(JS::VM& vm, RequestInfo const& input, R
// 3. If response is a network error, then reject p with a TypeError and abort these steps.
if (response->is_network_error()) {
auto message = response->network_error_message().value_or("Response is a network error"sv);
WebIDL::reject_promise(vm, promise_capability, JS::TypeError::create(relevant_realm, message));
WebIDL::reject_promise(vm, promise_capability, JS::TypeError::create(relevant_realm, message).release_allocated_value_but_fixme_should_propagate_errors());
return;
}

2
Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP/Bodies.cpp
View file

@ -52,7 +52,7 @@ JS::NonnullGCPtr<WebIDL::Promise> Body::fully_read_as_promise() const
return WebIDL::create_resolved_promise(realm, JS::PrimitiveString::create(vm, move(result)));
}
// Empty, Blob, FormData
return WebIDL::create_rejected_promise(realm, JS::InternalError::create(realm, "Reading body isn't fully implemented"sv));
return WebIDL::create_rejected_promise(realm, JS::InternalError::create(realm, "Reading body isn't fully implemented"sv).release_allocated_value_but_fixme_should_propagate_errors());
}
// https://fetch.spec.whatwg.org/#byte-sequence-as-a-body

2
Userland/Libraries/LibWeb/HTML/Location.cpp
View file

@ -89,7 +89,7 @@ JS::ThrowCompletionOr<void> Location::set_href(DeprecatedString const& new_href)
// 2. Parse the given value relative to the entry settings object. If that failed, throw a TypeError exception.
auto href_url = window.associated_document().parse_url(new_href);
if (!href_url.is_valid())
return vm.throw_completion<JS::URIError>(DeprecatedString::formatted("Invalid URL '{}'", new_href));
return vm.throw_completion<JS::URIError>(TRY_OR_THROW_OOM(vm, String::formatted("Invalid URL '{}'", new_href)));
// 3. Location-object navigate given the resulting URL record.
window.did_set_location_href({}, href_url);

2
Userland/Libraries/LibWeb/HTML/Scripting/ClassicScript.cpp
View file

@ -90,7 +90,7 @@ JS::Completion ClassicScript::run(RethrowErrors rethrow_errors, JS::GCPtr<JS::En
// 5. If script's error to rethrow is not null, then set evaluationStatus to Completion { [[Type]]: throw, [[Value]]: script's error to rethrow, [[Target]]: empty }.
if (m_error_to_rethrow.has_value()) {
evaluation_status = vm.throw_completion<JS::SyntaxError>(m_error_to_rethrow.value().to_deprecated_string());
evaluation_status = vm.throw_completion<JS::SyntaxError>(TRY_OR_THROW_OOM(vm, m_error_to_rethrow.value().to_string()));
} else {
auto timer = Core::ElapsedTimer::start_new();

2
Userland/Libraries/LibWeb/HTML/Scripting/ExceptionReporter.cpp
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@ -44,7 +44,7 @@ void report_exception_to_console(JS::Value value, JS::Realm& realm, ErrorInPromi
dbgln("\033[31;1mUnhandled JavaScript exception{}:\033[0m {}", error_in_promise == ErrorInPromise::Yes ? " (in promise)" : "", value);
}
console.report_exception(*JS::Error::create(realm, value.to_string_without_side_effects().release_value_but_fixme_should_propagate_errors().to_deprecated_string()), error_in_promise == ErrorInPromise::Yes);
console.report_exception(*JS::Error::create(realm, value.to_string_without_side_effects().release_value_but_fixme_should_propagate_errors()), error_in_promise == ErrorInPromise::Yes);
}
// https://html.spec.whatwg.org/#report-the-exception

4
Userland/Libraries/LibWeb/HTML/Window.cpp
View file

@ -1725,7 +1725,7 @@ JS_DEFINE_NATIVE_FUNCTION(Window::scroll)
if (!behavior_string_value.is_undefined())
behavior_string = TRY(behavior_string_value.to_deprecated_string(vm));
if (behavior_string != "smooth" && behavior_string != "auto")
return vm.throw_completion<JS::TypeError>("Behavior is not one of 'smooth' or 'auto'");
return vm.throw_completion<JS::TypeError>("Behavior is not one of 'smooth' or 'auto'"sv);
} else if (vm.argument_count() >= 2) {
// We ignore arguments 2+ in line with behavior of Chrome and Firefox
@ -1788,7 +1788,7 @@ JS_DEFINE_NATIVE_FUNCTION(Window::scroll_by)
auto behavior_string_value = TRY(options->get("behavior"));
auto behavior_string = behavior_string_value.is_undefined() ? "auto" : TRY(behavior_string_value.to_deprecated_string(vm));
if (behavior_string != "smooth" && behavior_string != "auto")
return vm.throw_completion<JS::TypeError>("Behavior is not one of 'smooth' or 'auto'");
return vm.throw_completion<JS::TypeError>("Behavior is not one of 'smooth' or 'auto'"sv);
ScrollBehavior behavior = (behavior_string == "smooth") ? ScrollBehavior::Smooth : ScrollBehavior::Auto;
// FIXME: Spec wants us to call scroll(options) here.

2
Userland/Libraries/LibWeb/WebAssembly/WebAssemblyMemoryConstructor.cpp
View file

@ -44,7 +44,7 @@ JS::ThrowCompletionOr<JS::NonnullGCPtr<JS::Object>> WebAssemblyMemoryConstructor
auto address = WebAssemblyObject::s_abstract_machine.store().allocate(Wasm::MemoryType { Wasm::Limits { initial, maximum } });
if (!address.has_value())
return vm.throw_completion<JS::TypeError>("Wasm Memory allocation failed");
return vm.throw_completion<JS::TypeError>("Wasm Memory allocation failed"sv);
return MUST_OR_THROW_OOM(vm.heap().allocate<WebAssemblyMemoryObject>(realm, realm, *address));
}

2
Userland/Libraries/LibWeb/WebAssembly/WebAssemblyMemoryPrototype.cpp
View file

@ -34,7 +34,7 @@ JS_DEFINE_NATIVE_FUNCTION(WebAssemblyMemoryPrototype::grow)
auto previous_size = memory->size() / Wasm::Constants::page_size;
if (!memory->grow(page_count * Wasm::Constants::page_size))
return vm.throw_completion<JS::TypeError>("Memory.grow() grows past the stated limit of the memory instance");
return vm.throw_completion<JS::TypeError>("Memory.grow() grows past the stated limit of the memory instance"sv);
return JS::Value(static_cast<u32>(previous_size));
}

27
Userland/Libraries/LibWeb/WebAssembly/WebAssemblyObject.cpp
View file

@ -17,6 +17,7 @@
#include <LibJS/Runtime/ArrayBuffer.h>
#include <LibJS/Runtime/BigInt.h>
#include <LibJS/Runtime/DataView.h>
#include <LibJS/Runtime/ThrowableStringBuilder.h>
#include <LibJS/Runtime/TypedArray.h>
#include <LibWasm/AbstractMachine/Interpreter.h>
#include <LibWasm/AbstractMachine/Validator.h>
@ -119,7 +120,7 @@ JS::ThrowCompletionOr<size_t> parse_module(JS::VM& vm, JS::Object* buffer_object
auto& buffer = static_cast<JS::DataView&>(*buffer_object);
data = buffer.viewed_array_buffer()->buffer().span().slice(buffer.byte_offset(), buffer.byte_length());
} else {
return vm.throw_completion<JS::TypeError>("Not a BufferSource");
return vm.throw_completion<JS::TypeError>("Not a BufferSource"sv);
}
FixedMemoryStream stream { data };
auto module_result = Wasm::Module::parse(stream);
@ -233,11 +234,11 @@ JS::ThrowCompletionOr<size_t> WebAssemblyObject::instantiate_module(JS::VM& vm,
if (import_.is_number() || import_.is_bigint()) {
if (import_.is_number() && type.type().kind() == Wasm::ValueType::I64) {
// FIXME: Throw a LinkError instead.
return vm.throw_completion<JS::TypeError>("LinkError: Import resolution attempted to cast a Number to a BigInteger");
return vm.throw_completion<JS::TypeError>("LinkError: Import resolution attempted to cast a Number to a BigInteger"sv);
}
if (import_.is_bigint() && type.type().kind() != Wasm::ValueType::I64) {
// FIXME: Throw a LinkError instead.
return vm.throw_completion<JS::TypeError>("LinkError: Import resolution attempted to cast a BigInteger to a Number");
return vm.throw_completion<JS::TypeError>("LinkError: Import resolution attempted to cast a BigInteger to a Number"sv);
}
auto cast_value = TRY(to_webassembly_value(vm, import_, type.type()));
address = s_abstract_machine.store().allocate({ type.type(), false }, cast_value);
@ -247,7 +248,7 @@ JS::ThrowCompletionOr<size_t> WebAssemblyObject::instantiate_module(JS::VM& vm,
// let globaladdr be v.[[Global]]
// FIXME: Throw a LinkError instead
return vm.throw_completion<JS::TypeError>("LinkError: Invalid value for global type");
return vm.throw_completion<JS::TypeError>("LinkError: Invalid value for global type"sv);
}
resolved_imports.set(import_name, Wasm::ExternValue { *address });
@ -256,7 +257,7 @@ JS::ThrowCompletionOr<size_t> WebAssemblyObject::instantiate_module(JS::VM& vm,
[&](Wasm::MemoryType const&) -> JS::ThrowCompletionOr<void> {
if (!import_.is_object() || !is<WebAssemblyMemoryObject>(import_.as_object())) {
// FIXME: Throw a LinkError instead
return vm.throw_completion<JS::TypeError>("LinkError: Expected an instance of WebAssembly.Memory for a memory import");
return vm.throw_completion<JS::TypeError>("LinkError: Expected an instance of WebAssembly.Memory for a memory import"sv);
}
auto address = static_cast<WebAssemblyMemoryObject const&>(import_.as_object()).address();
resolved_imports.set(import_name, Wasm::ExternValue { address });
@ -265,7 +266,7 @@ JS::ThrowCompletionOr<size_t> WebAssemblyObject::instantiate_module(JS::VM& vm,
[&](Wasm::TableType const&) -> JS::ThrowCompletionOr<void> {
if (!import_.is_object() || !is<WebAssemblyTableObject>(import_.as_object())) {
// FIXME: Throw a LinkError instead
return vm.throw_completion<JS::TypeError>("LinkError: Expected an instance of WebAssembly.Table for a table import");
return vm.throw_completion<JS::TypeError>("LinkError: Expected an instance of WebAssembly.Table for a table import"sv);
}
auto address = static_cast<WebAssemblyTableObject const&>(import_.as_object()).address();
resolved_imports.set(import_name, Wasm::ExternValue { address });
@ -274,7 +275,7 @@ JS::ThrowCompletionOr<size_t> WebAssemblyObject::instantiate_module(JS::VM& vm,
[&](auto const&) -> JS::ThrowCompletionOr<void> {
// FIXME: Implement these.
dbgln("Unimplemented import of non-function attempted");
return vm.throw_completion<JS::TypeError>("LinkError: Not Implemented");
return vm.throw_completion<JS::TypeError>("LinkError: Not Implemented"sv);
}));
}
}
@ -283,10 +284,10 @@ JS::ThrowCompletionOr<size_t> WebAssemblyObject::instantiate_module(JS::VM& vm,
auto link_result = linker.finish();
if (link_result.is_error()) {
// FIXME: Throw a LinkError.
StringBuilder builder;
builder.append("LinkError: Missing "sv);
builder.join(' ', link_result.error().missing_imports);
return vm.throw_completion<JS::TypeError>(builder.to_deprecated_string());
JS::ThrowableStringBuilder builder(vm);
MUST_OR_THROW_OOM(builder.append("LinkError: Missing "sv));
MUST_OR_THROW_OOM(builder.join(' ', link_result.error().missing_imports));
return vm.throw_completion<JS::TypeError>(MUST_OR_THROW_OOM(builder.to_string()));
}
auto instance_result = s_abstract_machine.instantiate(module, link_result.release_value());
@ -327,7 +328,7 @@ JS_DEFINE_NATIVE_FUNCTION(WebAssemblyObject::instantiate)
} else if (is<WebAssemblyModuleObject>(buffer)) {
module = &static_cast<WebAssemblyModuleObject*>(buffer)->module();
} else {
auto error = JS::TypeError::create(realm, DeprecatedString::formatted("{} is not an ArrayBuffer or a Module", buffer->class_name()));
auto error = JS::TypeError::create(realm, TRY_OR_THROW_OOM(vm, String::formatted("{} is not an ArrayBuffer or a Module", buffer->class_name())));
promise->reject(error);
return promise;
}
@ -447,7 +448,7 @@ JS::NativeFunction* create_native_function(JS::VM& vm, Wasm::FunctionAddress add
auto result = WebAssemblyObject::s_abstract_machine.invoke(address, move(values));
// FIXME: Use the convoluted mapping of errors defined in the spec.
if (result.is_trap())
return vm.throw_completion<JS::TypeError>(DeprecatedString::formatted("Wasm execution trapped (WIP): {}", result.trap().reason));
return vm.throw_completion<JS::TypeError>(TRY_OR_THROW_OOM(vm, String::formatted("Wasm execution trapped (WIP): {}", result.trap().reason)));
if (result.values().is_empty())
return JS::js_undefined();

4
Userland/Libraries/LibWeb/WebAssembly/WebAssemblyTableConstructor.cpp
View file

@ -57,7 +57,7 @@ JS::ThrowCompletionOr<JS::NonnullGCPtr<JS::Object>> WebAssemblyTableConstructor:
maximum = TRY(maximum_value.to_u32(vm));
if (maximum.has_value() && maximum.value() < initial)
return vm.throw_completion<JS::RangeError>("maximum should be larger than or equal to initial");
return vm.throw_completion<JS::RangeError>("maximum should be larger than or equal to initial"sv);
auto value_value = TRY(descriptor->get("value"));
auto reference_value = TRY([&]() -> JS::ThrowCompletionOr<Wasm::Value> {
@ -71,7 +71,7 @@ JS::ThrowCompletionOr<JS::NonnullGCPtr<JS::Object>> WebAssemblyTableConstructor:
auto address = WebAssemblyObject::s_abstract_machine.store().allocate(Wasm::TableType { *reference_type, Wasm::Limits { initial, maximum } });
if (!address.has_value())
return vm.throw_completion<JS::TypeError>("Wasm Table allocation failed");
return vm.throw_completion<JS::TypeError>("Wasm Table allocation failed"sv);
auto& table = *WebAssemblyObject::s_abstract_machine.store().get(*address);
for (auto& element : table.elements())

6
Userland/Libraries/LibWeb/WebAssembly/WebAssemblyTablePrototype.cpp
View file

@ -47,7 +47,7 @@ JS_DEFINE_NATIVE_FUNCTION(WebAssemblyTablePrototype::grow)
auto& reference = reference_value.value().get<Wasm::Reference>();
if (!table->grow(delta, reference))
return vm.throw_completion<JS::RangeError>("Failed to grow table");
return vm.throw_completion<JS::RangeError>("Failed to grow table"sv);
return JS::Value(static_cast<u32>(initial_size));
}
@ -66,7 +66,7 @@ JS_DEFINE_NATIVE_FUNCTION(WebAssemblyTablePrototype::get)
return JS::js_undefined();
if (table->elements().size() <= index)
return vm.throw_completion<JS::RangeError>("Table element index out of range");
return vm.throw_completion<JS::RangeError>("Table element index out of range"sv);
auto& ref = table->elements()[index];
if (!ref.has_value())
@ -90,7 +90,7 @@ JS_DEFINE_NATIVE_FUNCTION(WebAssemblyTablePrototype::set)
return JS::js_undefined();
if (table->elements().size() <= index)
return vm.throw_completion<JS::RangeError>("Table element index out of range");
return vm.throw_completion<JS::RangeError>("Table element index out of range"sv);
auto value_value = vm.argument(1);
auto reference_value = TRY([&]() -> JS::ThrowCompletionOr<Wasm::Value> {