01: /*
02: * Licensed to the Apache Software Foundation (ASF) under one or more
03: * contributor license agreements. See the NOTICE file distributed with
04: * this work for additional information regarding copyright ownership.
05: * The ASF licenses this file to You under the Apache License, Version 2.0
06: * (the "License"); you may not use this file except in compliance with
07: * the License. You may obtain a copy of the License at
08: *
09: * http://www.apache.org/licenses/LICENSE-2.0
10: *
11: * Unless required by applicable law or agreed to in writing, software
12: * distributed under the License is distributed on an "AS IS" BASIS,
13: * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14: * See the License for the specific language governing permissions and
15: * limitations under the License.
16: *
17: */
18: package org.apache.tools.ant.util;
19:
20: import java.io.Reader;
21: import java.io.IOException;
22:
23: /**
24: * input stream tokenizers implement this interface
25: *
26: * @version Ant 1.6
27: */
28: public interface Tokenizer {
29: /**
30: * get the next token from the input stream
31: * @param in the input stream
32: * @return the next token, or null for the end
33: * of the stream
34: * @throws IOException if an error occurs
35: */
36: String getToken(Reader in) throws IOException;
37:
38: /**
39: * return the string between tokens, after the
40: * previous token.
41: * @return the intra-token string
42: */
43: String getPostToken();
44: }
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