| package org.apache.xpath.parser; |
| public class UnaryExpr extends NonExecutableExpression |
| { |
| public UnaryExpr(XPath parser) |
| { |
| super(parser); |
| } |
| |
| public void jjtClose() |
| { |
| int n = jjtGetNumChildren(); |
| if(n > 1) |
| { |
| Node head = jjtGetChild(0); |
| for(int i = 1; i < n; i++) |
| { |
| Node next = jjtGetChild(i); |
| head.jjtAddChild(next, 0); |
| head = next; |
| } |
| m_exprs.setSize(1); |
| } |
| } |
| |
| /** |
| * Tell if this node is part of a PathExpr chain. For instance: |
| * <pre> |
| * |UnaryExpr |
| * | PathExpr |
| * | StepExpr |
| * | AxisChild child:: |
| * | NodeTest |
| * | NameTest |
| * | QName foo |
| * | Predicates * |
| * </pre><br/> |
| * In this example, UnaryExpr, PathExpr, and StepExpr should all return true. |
| */ |
| public boolean isPathExpr() |
| { |
| return true; |
| } |
| |
| /** |
| * @see SimpleNode#shouldReduceIfOneChild() |
| */ |
| public boolean shouldReduceIfOneChild() |
| { |
| return (jjtGetNumChildren() == 1) ? true : false; |
| } |
| |
| |
| } |
| |