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LibJS: Implement Object.getOwnPropertyNames()

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This commit is contained in:
Andreas Kling 2020-03-29 01:08:25 +01:00
parent 62d5f79388
commit f95a119627
3 changed files with 36 additions and 0 deletions
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20
Libraries/LibJS/Runtime/ObjectConstructor.cpp
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@ -27,6 +27,7 @@
#include <AK/Function.h>
#include <LibJS/Heap/Heap.h>
#include <LibJS/Interpreter.h>
#include <LibJS/Runtime/Array.h>
#include <LibJS/Runtime/ObjectConstructor.h>
namespace JS {
@ -35,6 +36,7 @@ ObjectConstructor::ObjectConstructor()
{
put("prototype", interpreter().object_prototype());
put_native_function("getOwnPropertyNames", get_own_property_names);
put_native_function("getPrototypeOf", get_prototype_of);
put_native_function("setPrototypeOf", set_prototype_of);
}
@ -48,6 +50,24 @@ Value ObjectConstructor::call(Interpreter& interpreter)
return interpreter.heap().allocate<Object>();
}
Value ObjectConstructor::get_own_property_names(Interpreter& interpreter)
{
if (interpreter.call_frame().arguments.size() < 1)
return {};
auto* object = interpreter.call_frame().arguments[0].to_object(interpreter.heap());
if (interpreter.exception())
return {};
auto* result = interpreter.heap().allocate<Array>();
if (object->is_array()) {
auto* array = static_cast<const Array*>(object);
for (i32 i = 0; i < array->length(); ++i)
result->push(js_string(interpreter.heap(), String::number(i)));
}
for (auto& it : object->own_properties())
result->push(js_string(interpreter.heap(), it.key));
return result;
}
Value ObjectConstructor::get_prototype_of(Interpreter& interpreter)
{
if (interpreter.call_frame().arguments.size() < 1)