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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* Copyright (c) 2021, Max Wipfli <mail@maxwipfli.ch>
* Copyright (c) 2023, Sam Atkins <atkinssj@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/Concepts.h>
#include <AK/DeprecatedString.h>
#include <AK/Error.h>
#include <AK/HashMap.h>
#include <AK/JsonArray.h>
#include <AK/JsonObjectSerializer.h>
#include <AK/JsonValue.h>
namespace AK {
class JsonObject {
template<typename Callback>
using CallbackErrorType = decltype(declval<Callback>()(declval<DeprecatedString const&>(), declval<JsonValue const&>()).release_error());
public:
JsonObject();
~JsonObject();
JsonObject(JsonObject const& other);
JsonObject(JsonObject&& other);
JsonObject& operator=(JsonObject const& other);
JsonObject& operator=(JsonObject&& other);
[[nodiscard]] size_t size() const;
[[nodiscard]] bool is_empty() const;
[[nodiscard]] bool has(StringView key) const;
[[nodiscard]] bool has_null(StringView key) const;
[[nodiscard]] bool has_bool(StringView key) const;
[[nodiscard]] bool has_string(StringView key) const;
[[nodiscard]] bool has_i8(StringView key) const;
[[nodiscard]] bool has_u8(StringView key) const;
[[nodiscard]] bool has_i16(StringView key) const;
[[nodiscard]] bool has_u16(StringView key) const;
[[nodiscard]] bool has_i32(StringView key) const;
[[nodiscard]] bool has_u32(StringView key) const;
[[nodiscard]] bool has_i64(StringView key) const;
[[nodiscard]] bool has_u64(StringView key) const;
[[nodiscard]] bool has_number(StringView key) const;
[[nodiscard]] bool has_array(StringView key) const;
[[nodiscard]] bool has_object(StringView key) const;
#ifndef KERNEL
[[nodiscard]] bool has_double(StringView key) const;
#endif
Optional<JsonValue const&> get(StringView key) const;
template<Integral T>
Optional<T> get_integer(StringView key) const
{
auto maybe_value = get(key);
if (maybe_value.has_value() && maybe_value->is_integer<T>())
return maybe_value->as_integer<T>();
return {};
}
Optional<i8> get_i8(StringView key) const;
Optional<u8> get_u8(StringView key) const;
Optional<i16> get_i16(StringView key) const;
Optional<u16> get_u16(StringView key) const;
Optional<i32> get_i32(StringView key) const;
Optional<u32> get_u32(StringView key) const;
Optional<i64> get_i64(StringView key) const;
Optional<u64> get_u64(StringView key) const;
Optional<FlatPtr> get_addr(StringView key) const;
Optional<bool> get_bool(StringView key) const;
#if !defined(KERNEL)
Optional<DeprecatedString> get_deprecated_string(StringView key) const;
#endif
Optional<JsonObject const&> get_object(StringView key) const;
Optional<JsonArray const&> get_array(StringView key) const;
#if !defined(KERNEL)
Optional<double> get_double(StringView key) const;
Optional<float> get_float(StringView key) const;
#endif
void set(DeprecatedString const& key, JsonValue value);
template<typename Callback>
void for_each_member(Callback callback) const
{
for (auto const& member : m_members)
callback(member.key, member.value);
}
template<FallibleFunction<DeprecatedString const&, JsonValue const&> Callback>
ErrorOr<void, CallbackErrorType<Callback>> try_for_each_member(Callback&& callback) const
{
for (auto const& member : m_members)
TRY(callback(member.key, member.value));
return {};
}
bool remove(StringView key);
template<typename Builder>
typename Builder::OutputType serialized() const;
template<typename Builder>
void serialize(Builder&) const;
[[nodiscard]] DeprecatedString to_deprecated_string() const;
private:
OrderedHashMap<DeprecatedString, JsonValue> m_members;
};
template<typename Builder>
inline void JsonObject::serialize(Builder& builder) const
{
auto serializer = MUST(JsonObjectSerializer<>::try_create(builder));
for_each_member([&](auto& key, auto& value) {
MUST(serializer.add(key, value));
});
MUST(serializer.finish());
}
template<typename Builder>
inline typename Builder::OutputType JsonObject::serialized() const
{
Builder builder;
serialize(builder);
return builder.to_deprecated_string();
}
template<typename Builder>
inline void JsonValue::serialize(Builder& builder) const
{
switch (m_type) {
case Type::String: {
builder.append('\"');
builder.append_escaped_for_json({ m_value.as_string->characters(), m_value.as_string->length() });
builder.append('\"');
} break;
case Type::Array:
m_value.as_array->serialize(builder);
break;
case Type::Object:
m_value.as_object->serialize(builder);
break;
case Type::Bool:
builder.append(m_value.as_bool ? "true"sv : "false"sv);
break;
#if !defined(KERNEL)
case Type::Double:
builder.appendff("{}", m_value.as_double);
break;
#endif
case Type::Int32:
builder.appendff("{}", as_i32());
break;
case Type::Int64:
builder.appendff("{}", as_i64());
break;
case Type::UnsignedInt32:
builder.appendff("{}", as_u32());
break;
case Type::UnsignedInt64:
builder.appendff("{}", as_u64());
break;
case Type::Null:
builder.append("null"sv);
break;
default:
VERIFY_NOT_REACHED();
}
}
template<typename Builder>
inline typename Builder::OutputType JsonValue::serialized() const
{
Builder builder;
serialize(builder);
return builder.to_deprecated_string();
}
}
#if USING_AK_GLOBALLY
using AK::JsonObject;
#endif
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