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https://github.com/pocoproject/poco.git
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38131d452d
- JSON support for Dynamic Struct and Array - added VarIterator - modified behavior of empty Var
124 lines
3.5 KiB
C++
124 lines
3.5 KiB
C++
//
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// Handler.h
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//
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// $Id$
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//
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// Library: JSON
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// Package: JSON
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// Module: Handler
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//
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// Definition of the Handler 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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// Permission is hereby granted, free of charge, to any person or organization
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// obtaining a copy of the software and accompanying documentation covered by
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// this license (the "Software") to use, reproduce, display, distribute,
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// execute, and transmit the Software, and to prepare derivative works of the
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// Software, and to permit third-parties to whom the Software is furnished to
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// do so, all subject to the following:
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//
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// The copyright notices in the Software and this entire statement, including
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// the above license grant, this restriction and the following disclaimer,
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// must be included in all copies of the Software, in whole or in part, and
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// all derivative works of the Software, unless such copies or derivative
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// works are solely in the form of machine-executable object code generated by
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// a source language processor.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
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// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
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// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
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// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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//
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#ifndef JSON_Handler_INCLUDED
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#define JSON_Handler_INCLUDED
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#include "Poco/JSON/JSON.h"
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#include "Poco/SharedPtr.h"
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#include "Poco/Dynamic/Var.h"
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#include "Poco/Dynamic/Struct.h"
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namespace Poco {
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namespace JSON {
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class JSON_API Handler
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{
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public:
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typedef SharedPtr<Handler> Ptr;
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Handler();
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/// Constructor;
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virtual ~Handler();
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/// Destructor
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virtual void reset() = 0;
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/// Resets the handler state.
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virtual void startObject() = 0;
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/// The parser has read a {, meaning a new object will be read
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virtual void endObject() = 0;
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/// The parser has read a }, meaning the object is read
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virtual void startArray() = 0;
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/// The parser has read a [, meaning a new array will be read
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virtual void endArray() = 0;
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/// The parser has read a ], meaning the array is read
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virtual void key(const std::string& k) = 0;
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/// A key of an object is read
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virtual void null() = 0;
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/// A null value is read
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virtual void value(int v) = 0;
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/// An integer value is read
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virtual void value(unsigned v) = 0;
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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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virtual void value(Int64 v) = 0;
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/// A 64-bit integer value is read
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virtual void value(UInt64 v) = 0;
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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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virtual void value(const std::string& value) = 0;
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/// A string value is read.
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virtual void value(double d) = 0;
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/// A double value is read
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virtual void value(bool b) = 0;
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/// A boolean value is read
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virtual Poco::Dynamic::Var asVar() const;
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/// Returns the result of the parser (an object, array or string),
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/// empty Var if there is no result.
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virtual Poco::DynamicStruct asStruct() const;
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/// Returns the result of the parser (an object, array or string),
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/// empty Var if there is no result.
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};
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}} // namespace Poco::JSON
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#endif // JSON_Handler_INCLUDED
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