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/*
* Copyright (c) 2020, The SerenityOS developers.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include <AK/Optional.h>
#include <AK/String.h>
#include <AK/Types.h>
#include <AK/Vector.h>
namespace AK {
class JsonPathElement {
public:
enum class Kind {
Key,
Index,
AnyIndex,
AnyKey,
};
JsonPathElement(size_t index)
: m_kind(Kind::Index)
, m_index(index)
{
}
JsonPathElement(const StringView& key)
: m_kind(Kind::Key)
, m_key(key)
{
}
Kind kind() const { return m_kind; }
const String& key() const
{
ASSERT(m_kind == Kind::Key);
return m_key;
}
size_t index() const
{
ASSERT(m_kind == Kind::Index);
return m_index;
}
String to_string() const
{
switch (m_kind) {
case Kind::Key:
return key();
case Kind::Index:
return String::number(index());
default:
return "*";
}
}
static JsonPathElement any_array_element;
static JsonPathElement any_object_element;
bool operator==(const JsonPathElement& other) const
{
switch (other.kind()) {
case Kind::Key:
return (m_kind == Kind::Key && other.key() == key()) || m_kind == Kind::AnyKey;
case Kind::Index:
return (m_kind == Kind::Index && other.index() == index()) || m_kind == Kind::AnyIndex;
case Kind::AnyKey:
return m_kind == Kind::Key;
case Kind::AnyIndex:
return m_kind == Kind::Index;
}
return false;
}
bool operator!=(const JsonPathElement& other) const
{
return !(*this == other);
}
private:
Kind m_kind;
String m_key;
size_t m_index { 0 };
JsonPathElement(Kind kind)
: m_kind(kind)
{
}
};
class JsonPath : public Vector<JsonPathElement> {
public:
JsonValue resolve(const JsonValue&) const;
String to_string() const;
};
}
using AK::JsonPath;
using AK::JsonPathElement;
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