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009b9bfd10
This parser assumes that the JSON is well-formed and will choke horribly on invalid input. Since we're primarily interested in parsing our own output right now, this is less of a problem. Longer-term we're gonna need something better. :^)
92 lines
2.1 KiB
C++
92 lines
2.1 KiB
C++
#pragma once
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#include <AK/AKString.h>
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namespace AK {
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class JsonArray;
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class JsonObject;
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class StringBuilder;
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class JsonValue {
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public:
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enum class Type {
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Undefined,
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Null,
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Int,
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Double,
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Bool,
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String,
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Array,
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Object,
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};
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static JsonValue from_string(const StringView&);
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explicit JsonValue(Type = Type::Null);
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~JsonValue() { clear(); }
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JsonValue(const JsonValue&);
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JsonValue(JsonValue&&);
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JsonValue& operator=(const JsonValue&);
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JsonValue& operator=(JsonValue&&);
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JsonValue(int);
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JsonValue(unsigned);
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JsonValue(double);
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JsonValue(bool);
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JsonValue(const char*);
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JsonValue(const String&);
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JsonValue(const JsonArray&);
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JsonValue(const JsonObject&);
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String serialized() const;
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void serialize(StringBuilder&) const;
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String as_string() const
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{
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if (m_type == Type::String)
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return *m_value.as_string;
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return { };
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}
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Type type() const { return m_type; }
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bool is_null() const { return m_type == Type::Null; }
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bool is_undefined() const { return m_type == Type::Undefined; }
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bool is_string() const { return m_type == Type::String; }
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bool is_int() const { return m_type == Type::Int; }
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bool is_double() const { return m_type == Type::Double; }
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bool is_array() const { return m_type == Type::Array; }
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bool is_object() const { return m_type == Type::Object; }
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bool is_number() const { return m_type == Type::Int || m_type == Type::Double; }
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dword to_dword(dword default_value = 0) const
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{
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if (!is_number())
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return default_value;
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if (type() == Type::Int)
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return (dword)m_value.as_int;
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return (dword)m_value.as_double;
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}
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private:
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void clear();
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void copy_from(const JsonValue&);
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Type m_type { Type::Undefined };
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union {
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StringImpl* as_string { nullptr };
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JsonArray* as_array;
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JsonObject* as_object;
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double as_double;
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int as_int;
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bool as_bool;
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} m_value;
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};
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}
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using AK::JsonValue;
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