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#pragma once
#include <AK/String.h>
#include <AK/IPv4Address.h>
#include <AK/Optional.h>
#include <AK/StringBuilder.h>
namespace AK {
class JsonArray;
class JsonObject;
class StringBuilder;
class JsonValue {
public:
enum class Type {
Undefined,
Null,
Int,
UnsignedInt,
#ifndef KERNEL
Double,
#endif
Bool,
String,
Array,
Object,
};
static JsonValue from_string(const StringView&);
explicit JsonValue(Type = Type::Null);
~JsonValue() { clear(); }
JsonValue(const JsonValue&);
JsonValue(JsonValue&&);
JsonValue& operator=(const JsonValue&);
JsonValue& operator=(JsonValue&&);
JsonValue(int);
JsonValue(unsigned);
JsonValue(long unsigned);
#ifndef KERNEL
JsonValue(double);
#endif
JsonValue(bool);
JsonValue(const char*);
JsonValue(const String&);
JsonValue(const IPv4Address&);
JsonValue(const JsonArray&);
JsonValue(const JsonObject&);
JsonValue(JsonArray&&);
JsonValue(JsonObject&&);
// FIXME: Implement these
JsonValue& operator=(JsonArray&&) = delete;
JsonValue& operator=(JsonObject&&) = delete;
template<typename Builder>
typename Builder::OutputType serialized() const;
template<typename Builder>
void serialize(Builder&) const;
String as_string_or(const String& alternative)
{
if (is_string())
return as_string();
return alternative;
}
String to_string() const
{
if (is_string())
return as_string();
return serialized<StringBuilder>();
}
Optional<IPv4Address> to_ipv4_address() const
{
if (!is_string())
return {};
return IPv4Address::from_string(as_string());
}
int to_int(int default_value = 0) const
{
if (!is_number())
return default_value;
#ifndef KERNEL
if (is_double())
return (int)as_double();
#endif
if (is_uint())
return (int)as_uint();
return as_int();
}
unsigned to_uint(unsigned default_value = 0) const
{
if (!is_number())
return default_value;
#ifndef KERNEL
if (is_double())
return (unsigned)as_double();
#endif
if (is_int())
return (unsigned)as_int();
return as_uint();
}
bool to_bool(bool default_value = false) const
{
if (!is_bool())
return default_value;
return as_bool();
}
int as_int() const
{
ASSERT(is_int());
return m_value.as_int;
}
int as_uint() const
{
ASSERT(is_uint());
return m_value.as_uint;
}
int as_bool() const
{
ASSERT(is_bool());
return m_value.as_bool;
}
String as_string() const
{
ASSERT(is_string());
return *m_value.as_string;
}
const JsonObject& as_object() const
{
ASSERT(is_object());
return *m_value.as_object;
}
const JsonArray& as_array() const
{
ASSERT(is_array());
return *m_value.as_array;
}
#ifndef KERNEL
double as_double() const
{
ASSERT(is_double());
return m_value.as_double;
}
#endif
Type type() const
{
return m_type;
}
bool is_null() const { return m_type == Type::Null; }
bool is_undefined() const { return m_type == Type::Undefined; }
bool is_bool() const { return m_type == Type::Bool; }
bool is_string() const { return m_type == Type::String; }
bool is_int() const { return m_type == Type::Int; }
bool is_uint() const { return m_type == Type::UnsignedInt; }
#ifndef KERNEL
bool is_double() const
{
return m_type == Type::Double;
}
#endif
bool is_array() const
{
return m_type == Type::Array;
}
bool is_object() const { return m_type == Type::Object; }
bool is_number() const
{
if (m_type == Type::Int || m_type == Type::UnsignedInt)
return true;
#ifdef KERNEL
return false;
#else
return m_type == Type::Double;
#endif
}
u32 to_u32(u32 default_value = 0) const
{
if (!is_number())
return default_value;
#ifdef KERNEL
return (u32)m_value.as_int;
#else
if (type() == Type::Int)
return (u32)m_value.as_int;
if (type() == Type::UnsignedInt)
return m_value.as_uint;
return (u32)m_value.as_double;
#endif
}
private:
void clear();
void copy_from(const JsonValue&);
Type m_type { Type::Undefined };
union {
StringImpl* as_string { nullptr };
JsonArray* as_array;
JsonObject* as_object;
#ifndef KERNEL
double as_double;
#endif
int as_int;
unsigned int as_uint;
bool as_bool;
} m_value;
};
}
using AK::JsonValue;
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