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LibJS: Implement Object.getOwnPropertyNames()
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3 changed files with 36 additions and 0 deletions
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@ -27,6 +27,7 @@
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#include <AK/Function.h>
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#include <LibJS/Heap/Heap.h>
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#include <LibJS/Interpreter.h>
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#include <LibJS/Runtime/Array.h>
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#include <LibJS/Runtime/ObjectConstructor.h>
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namespace JS {
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@ -35,6 +36,7 @@ ObjectConstructor::ObjectConstructor()
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{
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put("prototype", interpreter().object_prototype());
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put_native_function("getOwnPropertyNames", get_own_property_names);
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put_native_function("getPrototypeOf", get_prototype_of);
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put_native_function("setPrototypeOf", set_prototype_of);
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}
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@ -48,6 +50,24 @@ Value ObjectConstructor::call(Interpreter& interpreter)
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return interpreter.heap().allocate<Object>();
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}
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Value ObjectConstructor::get_own_property_names(Interpreter& interpreter)
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{
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if (interpreter.call_frame().arguments.size() < 1)
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return {};
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auto* object = interpreter.call_frame().arguments[0].to_object(interpreter.heap());
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if (interpreter.exception())
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return {};
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auto* result = interpreter.heap().allocate<Array>();
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if (object->is_array()) {
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auto* array = static_cast<const Array*>(object);
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for (i32 i = 0; i < array->length(); ++i)
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result->push(js_string(interpreter.heap(), String::number(i)));
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}
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for (auto& it : object->own_properties())
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result->push(js_string(interpreter.heap(), it.key));
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return result;
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}
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Value ObjectConstructor::get_prototype_of(Interpreter& interpreter)
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{
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if (interpreter.call_frame().arguments.size() < 1)
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