| /* |
| * Copyright 2005 Sascha Weinreuter |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.intellij.lang.xpath.psi.impl; |
| |
| import com.intellij.lang.ASTNode; |
| import org.intellij.lang.xpath.XPath2ElementTypes; |
| import org.intellij.lang.xpath.XPathElementType; |
| import org.intellij.lang.xpath.XPathTokenTypes; |
| import org.intellij.lang.xpath.psi.XPathElementVisitor; |
| import org.intellij.lang.xpath.psi.XPathExpression; |
| import org.intellij.lang.xpath.psi.XPathPrefixExpression; |
| import org.intellij.lang.xpath.psi.XPathType; |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.annotations.Nullable; |
| |
| public class XPathPrefixExpressionImpl extends XPathElementImpl implements XPathPrefixExpression { |
| public XPathPrefixExpressionImpl(ASTNode node) { |
| super(node); |
| } |
| |
| @NotNull |
| public XPathType getType() { |
| // +/-: isn't this always a number? |
| final XPathExpression expression = getExpression(); |
| return expression != null ? expression.getType() : XPathType.UNKNOWN; |
| } |
| |
| @Nullable |
| public XPathExpression getExpression() { |
| final ASTNode[] nodes = getNode().getChildren(XPath2ElementTypes.EXPRESSIONS); |
| return (XPathExpression)(nodes.length > 0 ? nodes[0].getPsi() : null); |
| } |
| |
| @NotNull |
| @Override |
| public XPathElementType getOperator() { |
| final ASTNode node = getNode().findChildByType(XPathTokenTypes.ADD_OPS); |
| final XPathElementType elementType = (XPathElementType)(node != null ? node.getElementType() : null); |
| assert elementType != null : unexpectedPsiAssertion(); |
| return elementType; |
| } |
| |
| public void accept(XPathElementVisitor visitor) { |
| visitor.visitXPathPrefixExpression(this); |
| } |
| } |