Namespace Xpath
Class CFunction

class CFunction: public CInterface {
public:
    CFunction();
    virtual ~CFunction();
public:
    virtual XValue Evaluate(
        const XContext &pContext, 
        const CArgumentList &argList) = 0;
    };

The abstract interface to XPath functions.

Since:

1.00.00

Version:

1.00.00

Author:

Alexey Gokhberg

See Also:

CValue, CArgumentList, CContext

CFunction

CFunction();

Constructs the function.

~CFunction

virtual ~CFunction();

Destroys the function.

Evaluate

virtual XValue Evaluate(
    const XContext &pContext, 
    const CArgumentList &argList) = 0;

Evaluates this function in the given XPath context with the given argument list.

Parameters:

pContext - the evaluation context

argList - the list of argument values

Returns:

the value obtained as the result of evaluation