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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/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> {