/*
 * Copyright (c) 2020, Matthew Olsson <mattco@serenityos.org>
 *
 * SPDX-License-Identifier: BSD-2-Clause
 */

#pragma once

#include <LibJS/Export.h>
#include <LibJS/Runtime/Object.h>

namespace JS {

class JS_API JSONObject final : public Object {
    JS_OBJECT(JSONObject, Object);
    GC_DECLARE_ALLOCATOR(JSONObject);

public:
    virtual void initialize(Realm&) override;
    virtual ~JSONObject() override = default;

    // The base implementation of stringify is exposed because it is used by
    // test-js to communicate between the JS tests and the C++ test runner.
    static ThrowCompletionOr<Optional<String>> stringify_impl(VM&, Value value, Value replacer, Value space);

    static ThrowCompletionOr<Value> parse_json(VM&, StringView text);

private:
    explicit JSONObject(Realm&);

    struct StringifyState {
        GC::Ptr<FunctionObject> replacer_function;
        HashTable<GC::Ptr<Object>> seen_objects;
        size_t indent_depth { 0 };
        String gap;
        Optional<Vector<Utf16String>> property_list;
        StringBuilder builder;
    };

    // Stringify helpers
    static ThrowCompletionOr<bool> serialize_json_property(VM&, StringifyState&, PropertyKey const& key, Object* holder);
    static ThrowCompletionOr<void> serialize_json_object(VM&, StringifyState&, Object&);
    static ThrowCompletionOr<void> serialize_json_array(VM&, StringifyState&, Object&);
    static void quote_json_string(StringBuilder&, Utf16View const&);

    // Parse helpers
    static ThrowCompletionOr<Value> internalize_json_property(VM&, Object* holder, PropertyKey const& name, FunctionObject& reviver);

    JS_DECLARE_NATIVE_FUNCTION(stringify);
    JS_DECLARE_NATIVE_FUNCTION(parse);
    JS_DECLARE_NATIVE_FUNCTION(raw_json);
    JS_DECLARE_NATIVE_FUNCTION(is_raw_json);
};

}