Namespace Xslt
Class CExtensionFunction

class CExtensionFunction: public CInterface {
public:
    CExtensionFunction();
    virtual ~CExtensionFunction();
public:
    virtual XValue Evaluate(
        const XExtensionContext &pExtensionContext,
        const XExprContext &pExprContext,
        const CArgumentList &argList) = 0;
    };

The abstract interface to extension functions.

For each extension function supported by the particular XSLT implementation, the separate derived class must be provided.

Since:

1.00.00

Version:

1.00.00

Author:

Alexey Gokhberg

See Also:

CExtensionContext, Xpath::CValue, Xpath::CArgumentList, Xpath::CContext

CExtensionFunction

CExtensionFunction();

Constructs the extension function.

~CExtensionFunction

virtual ~CExtensionFunction();

Destroys the extension function.

Evaluate

virtual XValue Evaluate(
    const XExtensionContext &pExtensionContext,
    const XExprContext &pExprContext,
    const CArgumentList &argList) = 0;

Evaluates this extension function with the given extension context, the given XPath expression context, and the given list of arguments.

Parameters:

pExtensionContext - the extension context

pExprContext - the XPath expression context

argList - the list of arguments

Returns:

the value obtained as the result of evaluation