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cos-cpp-sdk/third_party/include/Poco/JSON/Handler.h

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+//
+// Handler.h
+//
+// Library: JSON
+// Package: JSON
+// Module:  Handler
+//
+// Definition of the Handler class.
+//
+// Copyright (c) 2012, Applied Informatics Software Engineering GmbH.
+// and Contributors.
+//
+// SPDX-License-Identifier:	BSL-1.0
+//
+
+
+#ifndef JSON_Handler_INCLUDED
+#define JSON_Handler_INCLUDED
+
+
+#include "Poco/JSON/JSON.h"
+#include "Poco/SharedPtr.h"
+#include "Poco/Dynamic/Var.h"
+#include "Poco/Dynamic/Struct.h"
+
+
+namespace Poco {
+namespace JSON {
+
+
+class JSON_API Handler
+	/// Interface for handling parsing events generated by the JSON Parser.
+	///
+	/// An application can implement a subclass of Handler to implement
+	/// callback-based parsing of a JSON document, similar to how a SAX
+	/// parser would handle XML.
+{
+public:
+	typedef SharedPtr<Handler> Ptr;
+
+	Handler();
+		/// Creates an empty Handler.
+	
+	virtual ~Handler();
+		/// Destroys the Handler.
+
+	virtual void reset() = 0;
+		/// Resets the handler state.
+
+	virtual void startObject() = 0;
+		/// The parser has read a {, meaning a new object will be read.
+
+	virtual void endObject() = 0;
+		/// The parser has read a }, meaning the object is read.
+
+	virtual void startArray() = 0;
+		/// The parser has read a [, meaning a new array will be read.
+
+	virtual void endArray() = 0;
+		/// The parser has read a ], meaning the array is read.
+
+	virtual void key(const std::string& k) = 0;
+		/// A key of an object is read.
+
+	virtual void null() = 0;
+		/// A null value is read.
+
+	virtual void value(int v) = 0;
+		/// An integer value is read.
+
+	virtual void value(unsigned v) = 0;
+		/// An unsigned value is read. This will only be triggered if the
+		/// value cannot fit into a signed int.
+
+#if defined(POCO_HAVE_INT64)
+	virtual void value(Int64 v) = 0;
+		/// A 64-bit integer value is read.
+
+	virtual void value(UInt64 v) = 0;
+		/// An unsigned 64-bit integer value is read. This will only be
+		/// triggered if the value cannot fit into a signed 64-bit integer.
+#endif
+
+	virtual void value(const std::string& value) = 0;
+		/// A string value is read.
+
+	virtual void value(double d) = 0;
+		/// A double value is read.
+
+	virtual void value(bool b) = 0;
+		/// A boolean value is read.
+
+	virtual Poco::Dynamic::Var asVar() const;
+		/// Returns the result of the parser (an object, array or string),
+		/// empty Var if there is no result.
+
+	virtual Poco::DynamicStruct asStruct() const;
+		/// Returns the result of the parser (an object, array or string),
+		/// empty Var if there is no result.
+};
+
+
+} } // namespace Poco::JSON
+
+
+#endif // JSON_Handler_INCLUDED