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