diff options
Diffstat (limited to 'Libraries/LibJS/Runtime/ObjectConstructor.cpp')
| -rw-r--r-- | Libraries/LibJS/Runtime/ObjectConstructor.cpp | 46 |
1 files changed, 44 insertions, 2 deletions
diff --git a/Libraries/LibJS/Runtime/ObjectConstructor.cpp b/Libraries/LibJS/Runtime/ObjectConstructor.cpp index bef6ceff1e..5d3b54fdfb 100644 --- a/Libraries/LibJS/Runtime/ObjectConstructor.cpp +++ b/Libraries/LibJS/Runtime/ObjectConstructor.cpp @@ -28,6 +28,7 @@ #include <LibJS/Heap/Heap.h> #include <LibJS/Interpreter.h> #include <LibJS/Runtime/Array.h> +#include <LibJS/Runtime/Error.h> #include <LibJS/Runtime/ObjectConstructor.h> #include <LibJS/Runtime/Shape.h> @@ -37,6 +38,8 @@ ObjectConstructor::ObjectConstructor() { put("prototype", interpreter().object_prototype()); + put_native_function("defineProperty", define_property, 3); + put_native_function("getOwnPropertyDescriptor", get_own_property_descriptor, 2); put_native_function("getOwnPropertyNames", get_own_property_names, 1); put_native_function("getPrototypeOf", get_prototype_of, 1); put_native_function("setPrototypeOf", set_prototype_of, 2); @@ -88,8 +91,6 @@ Value ObjectConstructor::set_prototype_of(Interpreter& interpreter) { if (interpreter.argument_count() < 2) return {}; - if (!interpreter.argument(0).is_object()) - return {}; auto* object = interpreter.argument(0).to_object(interpreter.heap()); if (interpreter.exception()) return {}; @@ -97,4 +98,45 @@ Value ObjectConstructor::set_prototype_of(Interpreter& interpreter) return {}; } +Value ObjectConstructor::get_own_property_descriptor(Interpreter& interpreter) +{ + if (interpreter.argument_count() < 2) + return interpreter.throw_exception<Error>("TypeError", "Object.getOwnPropertyDescriptor() needs 2 arguments"); + if (!interpreter.argument(0).is_object()) + return interpreter.throw_exception<Error>("TypeError", "Object argument is not an object"); + auto& object = interpreter.argument(0).as_object(); + auto metadata = object.shape().lookup(interpreter.argument(1).to_string()); + if (!metadata.has_value()) + return js_undefined(); + auto* descriptor = interpreter.heap().allocate<Object>(); + descriptor->put("configurable", Value(!!(metadata.value().attributes & Attribute::Configurable))); + descriptor->put("enumerable", Value(!!(metadata.value().attributes & Attribute::Enumerable))); + descriptor->put("writable", Value(!!(metadata.value().attributes & Attribute::Writable))); + descriptor->put("value", object.get(interpreter.argument(1).to_string()).value_or(js_undefined())); + return descriptor; +} + +Value ObjectConstructor::define_property(Interpreter& interpreter) +{ + if (interpreter.argument_count() < 3) + return interpreter.throw_exception<Error>("TypeError", "Object.defineProperty() needs 3 arguments"); + if (!interpreter.argument(0).is_object()) + return interpreter.throw_exception<Error>("TypeError", "Object argument is not an object"); + if (!interpreter.argument(2).is_object()) + return interpreter.throw_exception<Error>("TypeError", "Descriptor argument is not an object"); + auto& object = interpreter.argument(0).as_object(); + auto& descriptor = interpreter.argument(2).as_object(); + + Value value = descriptor.get("value").value_or(js_undefined()); + u8 configurable = descriptor.get("configurable").value_or(Value(false)).to_boolean() * Attribute::Configurable; + u8 enumerable = descriptor.get("enumerable").value_or(Value(false)).to_boolean() * Attribute::Enumerable; + u8 writable = descriptor.get("writable").value_or(Value(false)).to_boolean() * Attribute::Writable; + u8 attributes = configurable | enumerable | writable; + + dbg() << "Defining new property " << interpreter.argument(1).to_string() << " with descriptor { " << configurable << ", " << enumerable << ", " << writable << ", attributes=" << attributes << " }"; + + object.put_own_property(object, interpreter.argument(1).to_string(), attributes, value, PutOwnPropertyMode::DefineProperty); + return &object; +} + } |