| /** |
| * 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.avro.io; |
| |
| import java.io.IOException; |
| |
| import org.apache.avro.io.parsing.SkipParser; |
| import org.apache.avro.io.parsing.Symbol; |
| import org.apache.avro.io.parsing.Parser.ActionHandler; |
| import org.apache.avro.io.parsing.SkipParser.SkipHandler; |
| |
| /** Base class for <a href="parsing/package-summary.html">parser</a>-based |
| * {@link Decoder}s. */ |
| public abstract class ParsingDecoder extends Decoder |
| implements ActionHandler, SkipHandler { |
| protected final SkipParser parser; |
| |
| protected ParsingDecoder(Symbol root) throws IOException { |
| this.parser = new SkipParser(root, this, this); |
| } |
| |
| protected abstract void skipFixed() throws IOException; |
| |
| @Override |
| public void skipAction() throws IOException { |
| parser.popSymbol(); |
| } |
| |
| @Override |
| public void skipTopSymbol() throws IOException { |
| Symbol top = parser.topSymbol(); |
| if (top == Symbol.NULL) { |
| readNull(); |
| } if (top == Symbol.BOOLEAN) { |
| readBoolean(); |
| } else if (top == Symbol.INT) { |
| readInt(); |
| } else if (top == Symbol.LONG) { |
| readLong(); |
| } else if (top == Symbol.FLOAT) { |
| readFloat(); |
| } else if (top == Symbol.DOUBLE) { |
| readDouble(); |
| } else if (top == Symbol.STRING) { |
| skipString(); |
| } else if (top == Symbol.BYTES) { |
| skipBytes(); |
| } else if (top == Symbol.ENUM) { |
| readEnum(); |
| } else if (top == Symbol.FIXED) { |
| skipFixed(); |
| } else if (top == Symbol.UNION) { |
| readIndex(); |
| } else if (top == Symbol.ARRAY_START) { |
| skipArray(); |
| } else if (top == Symbol.MAP_START) { |
| skipMap(); |
| } |
| } |
| |
| } |
| |