Namespace Xpath
Class CStepExpr

class CStepExpr: public CExpr {
public:
    CStepExpr(const XAxis &pAxis, const XNodeTest &pNodeTest);
    ~CStepExpr();
public:
    void AddPredicate(const XPredicate &pPredicate);
    int GetAxisType();
    XAxis GetAxis();
    XNodeTest GetNodeTest();
    int GetPredicateCount();
    XPredicate GetPredicate(int nIndex);
public:
    XValue Evaluate(const XContext &pContext);
    };

The XPath location step.

Since:

1.00.00

Version:

1.00.00

Author:

Alexey Gokhberg

See Also:

CValue, CAxis, CNodeTest, CPredicate

CStepExpr

CStepExpr(const XAxis &pAxis, const XNodeTest &pNodeTest);

Constructs the location step.

Parameters:

pAxis - the axis of this location step

pNodeTest - the node test of this location step

~CStepExpr

~CStepExpr();

Destroys the location step.

AddPredicate

void AddPredicate(const XPredicate &pPredicate);

Adds the predicate to the end of the list of predicates of this location setp.

Parameters:

pPredicate - the predicate to add

GetAxisType

int GetAxisType();

Returns the type of the axis of this location step.

Returns:

the type of the axis of this location step

GetAxis

XAxis GetAxis();

Returns the axis of this location step.

Returns:

the axis of this location step

GetNodeTest

XNodeTest GetNodeTest();

Returns the node test of this location step.

Returns:

the node test of this location step

GetPredicateCount

int GetPredicateCount();

Returns the number of predicates in this location step.

Returns:

the number of predicates in this location step

GetPredicate

XPredicate GetPredicate(int nIndex);

Returns the predicate at the given index in this location step.

Parameters:

nIndex - the zero-based index

Returns:

the predicate at the given index in this location step

Evaluate

XValue Evaluate(const XContext &pContext);

Evaluates the expression represented by this location step.

Parameters:

pContext - the evaluation context

Returns:

the value obtained as the result of evaluation