01: /*
02: * Copyright (c) 2003-2008, Franz-Josef Elmer, All rights reserved.
03: *
04: * Redistribution and use in source and binary forms, with or without
05: * modification, are permitted provided that the following conditions are met:
06: *
07: * - Redistributions of source code must retain the above copyright notice,
08: * this list of conditions and the following disclaimer.
09: * - Redistributions in binary form must reproduce the above copyright notice,
10: * this list of conditions and the following disclaimer in the documentation
11: * and/or other materials provided with the distribution.
12: *
13: * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
14: * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
15: * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
17: * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18: * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19: * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
20: * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
21: * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
22: * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
23: * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24: */
25: package classycle.util;
26:
27: import java.util.ArrayList;
28:
29: /**
30: * Sequence of {@link StringPattern StringPatterns}.
31: *
32: * @author Franz-Josef Elmer
33: */
34: public abstract class StringPatternSequence implements StringPattern {
35: protected final ArrayList _patterns = new ArrayList();
36:
37: /**
38: * Appends the specified pattern.
39: */
40: public void appendPattern(StringPattern pattern) {
41: _patterns.add(pattern);
42: }
43:
44: public String toString() {
45: StringBuffer buffer = new StringBuffer();
46: int size = _patterns.size();
47: if (size > 1) {
48: buffer.append('(');
49: }
50: for (int i = 0; i < size; i++) {
51: if (i != 0) {
52: buffer.append(getOperatorSymbol());
53: }
54: buffer.append(_patterns.get(i));
55: }
56: return new String(size > 1 ? buffer.append(')') : buffer);
57: }
58:
59: /**
60: * Returns the operator symbol for pretty printing. Needed by
61: * <code>toString()</code>.
62: */
63: protected abstract String getOperatorSymbol();
64:
65: }
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