/**
* evaluate array access upon a base object.
*
* <p>foo.bar[2]
*
* <p>makes me rethink the array operator :)
*
* @param jc the {@link JexlContext} to evaluate against.
* @param obj not used.
* @return the value of the array expression.
* @throws Exception on any error
*/
public Object execute(Object obj, JexlContext jc) throws Exception {
ASTIdentifier base = (ASTIdentifier) jjtGetChild(0);
Object result = base.execute(obj, jc);
/*
* ignore the first child - it's our identifier
*/
for (int i = 1; i < jjtGetNumChildren(); i++) {
Object loc = ((SimpleNode) jjtGetChild(i)).value(jc);
if (loc == null) {
return null;
}
result = evaluateExpr(result, loc);
}
return result;
}
/** {@inheritDoc} */
public Object value(JexlContext jc) throws Exception {
/*
* get the base ASTIdentifier
*/
ASTIdentifier base = (ASTIdentifier) jjtGetChild(0);
Object o = base.value(jc);
/*
* ignore the first child - it's our identifier
*/
for (int i = 1; i < jjtGetNumChildren(); i++) {
Object loc = ((SimpleNode) jjtGetChild(i)).value(jc);
if (loc == null) {
return null;
}
o = evaluateExpr(o, loc);
}
return o;
}
