170 lines
3.0 KiB
C++
170 lines
3.0 KiB
C++
//
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// ParseHandler.h
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//
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// Library: JSON
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// Package: JSON
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// Module: ParseHandler
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//
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// Definition of the ParseHandler class.
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//
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// Copyright (c) 2012, Applied Informatics Software Engineering GmbH.
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// and Contributors.
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//
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// SPDX-License-Identifier: BSL-1.0
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//
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#ifndef JSON_ParseHandler_INCLUDED
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#define JSON_ParseHandler_INCLUDED
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#include "Poco/JSON/Handler.h"
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#include <stack>
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namespace Poco {
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namespace JSON {
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class JSON_API ParseHandler: public Handler
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/// ParseHandler is the default handler for the JSON Parser.
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///
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/// This handler will construct an Object or Array based
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/// on the handlers called by the Parser.
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{
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public:
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ParseHandler(bool preserveObjectOrder = false);
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/// Creates the ParseHandler.
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///
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/// If preserveObjectOrder is true, the order of properties
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/// inside objects is preserved. Otherwise, items
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/// will be sorted by keys.
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~ParseHandler() override;
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/// Destroys the ParseHandler.
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void reset() override;
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/// Resets the handler state.
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void startObject() override;
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/// Handles a '{'; a new object is started.
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void endObject() override;
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/// Handles a '}'; the object is closed.
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void startArray() override;
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/// Handles a '['; a new array is started.
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void endArray() override;
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/// Handles a ']'; the array is closed.
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void key(const std::string& k) override;
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/// A key is read
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Dynamic::Var asVar() const override;
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/// Returns the result of the parser (an object or an array).
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void value(int v) override;
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/// An integer value is read
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void value(unsigned v) override;
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/// An unsigned value is read. This will only be triggered if the
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/// value cannot fit into a signed int.
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#if defined(POCO_HAVE_INT64)
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void value(Int64 v) override;
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/// A 64-bit integer value is read
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void value(UInt64 v) override;
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/// An unsigned 64-bit integer value is read. This will only be
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/// triggered if the value cannot fit into a signed 64-bit integer.
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#endif
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void value(const std::string& s) override;
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/// A string value is read.
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void value(double d) override;
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/// A double value is read.
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void value(bool b) override;
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/// A boolean value is read.
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void null() override;
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/// A null value is read.
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private:
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void setValue(const Poco::Dynamic::Var& value);
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using Stack = std::stack<Dynamic::Var>;
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Stack _stack;
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std::string _key;
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Dynamic::Var _result;
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bool _preserveObjectOrder;
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};
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//
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// inlines
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//
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inline Dynamic::Var ParseHandler::asVar() const
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{
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return _result;
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}
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inline void ParseHandler::value(int v)
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{
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setValue(v);
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}
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inline void ParseHandler::value(unsigned v)
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{
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setValue(v);
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}
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#if defined(POCO_HAVE_INT64)
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inline void ParseHandler::value(Int64 v)
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{
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setValue(v);
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}
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inline void ParseHandler::value(UInt64 v)
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{
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setValue(v);
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}
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#endif
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inline void ParseHandler::value(const std::string& s)
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{
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setValue(s);
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}
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inline void ParseHandler::value(double d)
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{
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setValue(d);
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}
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inline void ParseHandler::value(bool b)
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{
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setValue(b);
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}
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inline void ParseHandler::null()
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{
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Poco::Dynamic::Var empty;
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setValue(empty);
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}
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} } // namespace Poco::JSON
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#endif // JSON_ParseHandler_INCLUDED
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