| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more contributor license |
| * agreements. See the NOTICE file distributed with this work for additional information regarding |
| * copyright ownership. The ASF licenses this file to You 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.apache.geode.cache.query.internal.parse; |
| |
| import antlr.Token; |
| import antlr.collections.AST; |
| |
| import org.apache.geode.cache.query.internal.QCompiler; |
| |
| /** |
| * This handles paths, method invocations, and index operators that post-fix to a receiver |
| * expression. |
| */ |
| public class ASTPostfix extends GemFireAST { |
| private static final long serialVersionUID = 1100525641797867500L; |
| |
| public ASTPostfix() {} |
| |
| public ASTPostfix(Token t) { |
| super(t); |
| } |
| |
| @Override |
| public void compile(QCompiler compiler) { |
| AST child = getFirstChild(); |
| // push receiver, which is any CompiledValue |
| ((GemFireAST) child).compile(compiler); |
| child = child.getNextSibling(); |
| while (child != null) { |
| switch (child.getType()) { |
| case OQLLexerTokenTypes.METHOD_INV: |
| // defer to method inv |
| ((GemFireAST) child).compile(compiler); |
| break; |
| case OQLLexerTokenTypes.Identifier: |
| compiler.appendPathComponent(child.getText()); |
| break; |
| case OQLLexerTokenTypes.TOK_LBRACK: |
| // push the indexExpr List on the stack |
| // If the sibling is TOKEN_STAR, push null |
| if (child.getFirstChild().getType() == OQLLexerTokenTypes.TOK_STAR) { |
| compiler.pushNull(); |
| } else { |
| ((GemFireAST) child).compile(compiler); |
| } |
| compiler.indexOp(); |
| break; |
| default: |
| throw new Error("unexpected node type:" + child.getType()); |
| } |
| child = child.getNextSibling(); |
| } |
| } |
| |
| } |