mirror of
https://github.com/LadybirdBrowser/ladybird.git
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164 lines
5.0 KiB
C++
164 lines
5.0 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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* Copyright (c) 2021, Max Wipfli <mail@maxwipfli.ch>
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* Copyright (c) 2023, Sam Atkins <atkinssj@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/ByteString.h>
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#include <AK/Concepts.h>
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#include <AK/Error.h>
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#include <AK/HashMap.h>
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#include <AK/JsonArray.h>
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#include <AK/JsonObjectSerializer.h>
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#include <AK/JsonValue.h>
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namespace AK {
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class JsonObject {
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template<typename Callback>
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using CallbackErrorType = decltype(declval<Callback>()(declval<ByteString const&>(), declval<JsonValue const&>()).release_error());
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public:
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JsonObject();
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~JsonObject();
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JsonObject(JsonObject const& other);
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JsonObject(JsonObject&& other);
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JsonObject& operator=(JsonObject const& other);
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JsonObject& operator=(JsonObject&& other);
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[[nodiscard]] size_t size() const;
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[[nodiscard]] bool is_empty() const;
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[[nodiscard]] bool has(StringView key) const;
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[[nodiscard]] bool has_null(StringView key) const;
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[[nodiscard]] bool has_bool(StringView key) const;
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[[nodiscard]] bool has_string(StringView key) const;
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[[nodiscard]] bool has_i8(StringView key) const;
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[[nodiscard]] bool has_u8(StringView key) const;
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[[nodiscard]] bool has_i16(StringView key) const;
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[[nodiscard]] bool has_u16(StringView key) const;
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[[nodiscard]] bool has_i32(StringView key) const;
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[[nodiscard]] bool has_u32(StringView key) const;
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[[nodiscard]] bool has_i64(StringView key) const;
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[[nodiscard]] bool has_u64(StringView key) const;
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[[nodiscard]] bool has_number(StringView key) const;
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[[nodiscard]] bool has_array(StringView key) const;
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[[nodiscard]] bool has_object(StringView key) const;
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Optional<JsonValue const&> get(StringView key) const;
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template<Integral T>
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Optional<T> get_integer(StringView key) const
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{
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auto maybe_value = get(key);
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if (maybe_value.has_value() && maybe_value->is_integer<T>())
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return maybe_value->as_integer<T>();
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return {};
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}
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Optional<i8> get_i8(StringView key) const;
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Optional<u8> get_u8(StringView key) const;
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Optional<i16> get_i16(StringView key) const;
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Optional<u16> get_u16(StringView key) const;
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Optional<i32> get_i32(StringView key) const;
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Optional<u32> get_u32(StringView key) const;
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Optional<i64> get_i64(StringView key) const;
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Optional<u64> get_u64(StringView key) const;
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Optional<FlatPtr> get_addr(StringView key) const;
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Optional<bool> get_bool(StringView key) const;
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Optional<ByteString> get_byte_string(StringView key) const;
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Optional<JsonObject const&> get_object(StringView key) const;
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Optional<JsonArray const&> get_array(StringView key) const;
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Optional<double> get_double_with_precision_loss(StringView key) const;
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Optional<float> get_float_with_precision_loss(StringView key) const;
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void set(ByteString const& key, JsonValue value);
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template<typename Callback>
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void for_each_member(Callback callback) const
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{
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for (auto const& member : m_members)
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callback(member.key, member.value);
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}
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template<FallibleFunction<ByteString const&, JsonValue const&> Callback>
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ErrorOr<void, CallbackErrorType<Callback>> try_for_each_member(Callback&& callback) const
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{
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for (auto const& member : m_members)
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TRY(callback(member.key, member.value));
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return {};
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}
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bool remove(StringView key);
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template<typename Builder>
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typename Builder::OutputType serialized() const;
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template<typename Builder>
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void serialize(Builder&) const;
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[[nodiscard]] ByteString to_byte_string() const;
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private:
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OrderedHashMap<ByteString, JsonValue> m_members;
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};
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template<typename Builder>
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inline void JsonObject::serialize(Builder& builder) const
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{
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auto serializer = MUST(JsonObjectSerializer<>::try_create(builder));
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for_each_member([&](auto& key, auto& value) {
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MUST(serializer.add(key, value));
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});
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MUST(serializer.finish());
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}
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template<typename Builder>
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inline typename Builder::OutputType JsonObject::serialized() const
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{
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Builder builder;
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serialize(builder);
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return builder.to_byte_string();
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}
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template<typename Builder>
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inline void JsonValue::serialize(Builder& builder) const
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{
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m_value.visit(
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[&](Empty const&) { builder.append("null"sv); },
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[&](bool const& value) { builder.append(value ? "true"sv : "false"sv); },
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[&](Arithmetic auto const& value) { builder.appendff("{}", value); },
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[&](ByteString const& value) {
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builder.append('\"');
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builder.append_escaped_for_json(value.bytes());
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builder.append('\"');
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},
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[&](auto const& array_or_object) {
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array_or_object->serialize(builder);
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});
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}
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template<typename Builder>
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inline typename Builder::OutputType JsonValue::serialized() const
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{
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Builder builder;
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serialize(builder);
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return builder.to_byte_string();
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}
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}
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#if USING_AK_GLOBALLY
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using AK::JsonObject;
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#endif
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