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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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34
Tests/LibWasm/test-wasm.cpp
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@ -15,20 +15,26 @@ TEST_ROOT("Userland/Libraries/LibWasm/Tests");
TESTJS_GLOBAL_FUNCTION(read_binary_wasm_file, readBinaryWasmFile)
{
auto& realm = *vm.current_realm();
auto error_code_to_string = [](int code) {
auto const* error_string = strerror(code);
return StringView { error_string, strlen(error_string) };
};
auto filename = TRY(vm.argument(0).to_deprecated_string(vm));
auto file = Core::File::open(filename, Core::File::OpenMode::Read);
if (file.is_error())
return vm.throw_completion<JS::TypeError>(strerror(file.error().code()));
return vm.throw_completion<JS::TypeError>(error_code_to_string(file.error().code()));
auto file_size = file.value()->size();
if (file_size.is_error())
return vm.throw_completion<JS::TypeError>(strerror(file_size.error().code()));
return vm.throw_completion<JS::TypeError>(error_code_to_string(file_size.error().code()));
auto array = TRY(JS::Uint8Array::create(realm, file_size.value()));
auto read = file.value()->read(array->data());
if (read.is_error())
return vm.throw_completion<JS::TypeError>(strerror(read.error().code()));
return vm.throw_completion<JS::TypeError>(error_code_to_string(read.error().code()));
return JS::Value(array);
}
@ -57,7 +63,7 @@ public:
linker.link(spec_test_namespace());
auto link_result = linker.finish();
if (link_result.is_error())
return vm.throw_completion<JS::TypeError>("Link failed");
return vm.throw_completion<JS::TypeError>("Link failed"sv);
auto result = machine().instantiate(*instance->m_module, link_result.release_value());
if (result.is_error())
return vm.throw_completion<JS::TypeError>(result.release_error().error);
@ -103,7 +109,7 @@ TESTJS_GLOBAL_FUNCTION(parse_webassembly_module, parseWebAssemblyModule)
auto& realm = *vm.current_realm();
auto* object = TRY(vm.argument(0).to_object(vm));
if (!is<JS::Uint8Array>(object))
return vm.throw_completion<JS::TypeError>("Expected a Uint8Array argument to parse_webassembly_module");
return vm.throw_completion<JS::TypeError>("Expected a Uint8Array argument to parse_webassembly_module"sv);
auto& array = static_cast<JS::Uint8Array&>(*object);
FixedMemoryStream stream { array.data() };
auto result = Wasm::Module::parse(stream);
@ -133,11 +139,11 @@ TESTJS_GLOBAL_FUNCTION(compare_typed_arrays, compareTypedArrays)
{
auto* lhs = TRY(vm.argument(0).to_object(vm));
if (!is<JS::TypedArrayBase>(lhs))
return vm.throw_completion<JS::TypeError>("Expected a TypedArray");
return vm.throw_completion<JS::TypeError>("Expected a TypedArray"sv);
auto& lhs_array = static_cast<JS::TypedArrayBase&>(*lhs);
auto* rhs = TRY(vm.argument(1).to_object(vm));
if (!is<JS::TypedArrayBase>(rhs))
return vm.throw_completion<JS::TypeError>("Expected a TypedArray");
return vm.throw_completion<JS::TypeError>("Expected a TypedArray"sv);
auto& rhs_array = static_cast<JS::TypedArrayBase&>(*rhs);
return JS::Value(lhs_array.viewed_array_buffer()->buffer() == rhs_array.viewed_array_buffer()->buffer());
}
@ -157,7 +163,7 @@ JS_DEFINE_NATIVE_FUNCTION(WebAssemblyModule::get_export)
auto this_value = vm.this_value();
auto* object = TRY(this_value.to_object(vm));
if (!is<WebAssemblyModule>(object))
return vm.throw_completion<JS::TypeError>("Not a WebAssemblyModule");
return vm.throw_completion<JS::TypeError>("Not a WebAssemblyModule"sv);
auto instance = static_cast<WebAssemblyModule*>(object);
for (auto& entry : instance->module_instance().exports()) {
if (entry.name() == name) {
@ -175,10 +181,10 @@ JS_DEFINE_NATIVE_FUNCTION(WebAssemblyModule::get_export)
[&](const auto& ref) -> JS::Value { return JS::Value(static_cast<double>(ref.address.value())); });
});
}
return vm.throw_completion<JS::TypeError>(DeprecatedString::formatted("'{}' does not refer to a function or a global", name));
return vm.throw_completion<JS::TypeError>(TRY_OR_THROW_OOM(vm, String::formatted("'{}' does not refer to a function or a global", name)));
}
}
return vm.throw_completion<JS::TypeError>(DeprecatedString::formatted("'{}' could not be found", name));
return vm.throw_completion<JS::TypeError>(TRY_OR_THROW_OOM(vm, String::formatted("'{}' could not be found", name)));
}
JS_DEFINE_NATIVE_FUNCTION(WebAssemblyModule::wasm_invoke)
@ -187,16 +193,16 @@ JS_DEFINE_NATIVE_FUNCTION(WebAssemblyModule::wasm_invoke)
Wasm::FunctionAddress function_address { address };
auto function_instance = WebAssemblyModule::machine().store().get(function_address);
if (!function_instance)
return vm.throw_completion<JS::TypeError>("Invalid function address");
return vm.throw_completion<JS::TypeError>("Invalid function address"sv);
Wasm::FunctionType const* type { nullptr };
function_instance->visit([&](auto& value) { type = &value.type(); });
if (!type)
return vm.throw_completion<JS::TypeError>("Invalid function found at given address");
return vm.throw_completion<JS::TypeError>("Invalid function found at given address"sv);
Vector<Wasm::Value> arguments;
if (type->parameters().size() + 1 > vm.argument_count())
return vm.throw_completion<JS::TypeError>(DeprecatedString::formatted("Expected {} arguments for call, but found {}", type->parameters().size() + 1, vm.argument_count()));
return vm.throw_completion<JS::TypeError>(TRY_OR_THROW_OOM(vm, String::formatted("Expected {} arguments for call, but found {}", type->parameters().size() + 1, vm.argument_count())));
size_t index = 1;
for (auto& param : type->parameters()) {
auto argument = vm.argument(index++);
@ -238,7 +244,7 @@ JS_DEFINE_NATIVE_FUNCTION(WebAssemblyModule::wasm_invoke)
auto result = WebAssemblyModule::machine().invoke(function_address, arguments);
if (result.is_trap())
return vm.throw_completion<JS::TypeError>(DeprecatedString::formatted("Execution trapped: {}", result.trap().reason));
return vm.throw_completion<JS::TypeError>(TRY_OR_THROW_OOM(vm, String::formatted("Execution trapped: {}", result.trap().reason)));
if (result.values().is_empty())
return JS::js_null();