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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_order(other.m_order)
, m_members(other.m_members)
{
}
JsonObject(JsonObject&& other)
: m_order(move(other.m_order))
, m_members(move(other.m_members))
{
}
JsonObject& operator=(JsonObject const& other)
{
if (this != &other) {
m_members = other.m_members;
m_order = other.m_order;
}
return *this;
}
JsonObject& operator=(JsonObject&& other)
{
if (this != &other) {
m_members = move(other.m_members);
m_order = move(other.m_order);
}
return *this;
}
int size() const { return m_members.size(); }
bool is_empty() const { return m_members.is_empty(); }
JsonValue get(String const& key) const
{
auto* value = get_ptr(key);
return value ? *value : JsonValue(JsonValue::Type::Null);
}
JsonValue get_or(String const& key, JsonValue const& alternative) const
{
auto* value = get_ptr(key);
return value ? *value : alternative;
}
JsonValue const* get_ptr(String const& key) const
{
auto it = m_members.find(key);
if (it == m_members.end())
return nullptr;
return &(*it).value;
}
bool has(String const& key) const
{
return m_members.contains(key);
}
void set(String const& key, JsonValue value)
{
if (m_members.set(key, move(value)) == HashSetResult::ReplacedExistingEntry)
m_order.remove(m_order.find_first_index(key).value());
m_order.append(key);
}
template<typename Callback>
void for_each_member(Callback callback) const
{
for (size_t i = 0; i < m_order.size(); ++i) {
auto property = m_order[i];
callback(property, m_members.get(property).value());
}
}
bool remove(String const& key)
{
if (m_members.remove(key)) {
m_order.remove(m_order.find_first_index(key).value());
return true;
}
return false;
}
template<typename Builder>
typename Builder::OutputType serialized() const;
template<typename Builder>
void serialize(Builder&) const;
String to_string() const { return serialized<StringBuilder>(); }
private:
Vector<String> m_order;
HashMap<String, JsonValue> m_members;
};
template<typename Builder>
inline void JsonObject::serialize(Builder& builder) const
{
JsonObjectSerializer serializer { builder };
for_each_member([&](auto& key, auto& value) {
serializer.add(key, value);
});
}
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" : "false");
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");
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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