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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* Copyright (c) 2021, Max Wipfli <mail@maxwipfli.ch>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/HashMap.h>
#include <AK/JsonArray.h>
#include <AK/JsonObjectSerializer.h>
#include <AK/JsonValue.h>
#include <AK/String.h>
namespace AK {
class JsonObject {
public:
JsonObject() = default;
~JsonObject() = default;
JsonObject(JsonObject const& other)
: m_members(other.m_members)
{
}
JsonObject(JsonObject&& other)
: m_members(move(other.m_members))
{
}
JsonObject& operator=(JsonObject const& other)
{
if (this != &other)
m_members = other.m_members;
return *this;
}
JsonObject& operator=(JsonObject&& other)
{
if (this != &other)
m_members = move(other.m_members);
return *this;
}
[[nodiscard]] size_t size() const { return m_members.size(); }
[[nodiscard]] bool is_empty() const { return m_members.is_empty(); }
[[nodiscard]] JsonValue const& get(StringView key) const
{
auto const* value = get_ptr(key);
static JsonValue* s_null_value { nullptr };
if (!value) {
if (!s_null_value)
s_null_value = new JsonValue;
return *s_null_value;
}
return *value;
}
[[nodiscard]] JsonValue const* get_ptr(StringView key) const
{
auto it = m_members.find(key);
if (it == m_members.end())
return nullptr;
return &(*it).value;
}
[[nodiscard]] [[nodiscard]] bool has(StringView key) const
{
return m_members.contains(key);
}
[[nodiscard]] bool has_null(StringView key) const
{
auto const* value = get_ptr(key);
return value && value->is_null();
}
[[nodiscard]] bool has_bool(StringView key) const
{
auto const* value = get_ptr(key);
return value && value->is_bool();
}
[[nodiscard]] bool has_string(StringView key) const
{
auto const* value = get_ptr(key);
return value && value->is_string();
}
[[nodiscard]] bool has_i32(StringView key) const
{
auto const* value = get_ptr(key);
return value && value->is_i32();
}
[[nodiscard]] bool has_u32(StringView key) const
{
auto const* value = get_ptr(key);
return value && value->is_u32();
}
[[nodiscard]] bool has_i64(StringView key) const
{
auto const* value = get_ptr(key);
return value && value->is_i64();
}
[[nodiscard]] bool has_u64(StringView key) const
{
auto const* value = get_ptr(key);
return value && value->is_u64();
}
[[nodiscard]] bool has_number(StringView key) const
{
auto const* value = get_ptr(key);
return value && value->is_number();
}
[[nodiscard]] bool has_array(StringView key) const
{
auto const* value = get_ptr(key);
return value && value->is_array();
}
[[nodiscard]] bool has_object(StringView key) const
{
auto const* value = get_ptr(key);
return value && value->is_object();
}
#ifndef KERNEL
[[nodiscard]] [[nodiscard]] bool has_double(StringView key) const
{
auto const* value = get_ptr(key);
return value && value->is_double();
}
#endif
void set(String const& key, JsonValue value)
{
m_members.set(key, move(value));
}
template<typename Callback>
void for_each_member(Callback callback) const
{
for (auto const& member : m_members)
callback(member.key, member.value);
}
bool remove(StringView key)
{
return m_members.remove(key);
}
template<typename Builder>
typename Builder::OutputType serialized() const;
template<typename Builder>
void serialize(Builder&) const;
[[nodiscard]] String to_string() const { return serialized<StringBuilder>(); }
private:
OrderedHashMap<String, 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.build();
}
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.build();
}
}
using AK::JsonObject;
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