1 /*
2 * Copyright (C) 2006 uguu@users.sourceforge.jp, All Rights Reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 *
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * 3. Neither the name of Clarkware Consulting, Inc. nor the names of its
16 * contributors may be used to endorse or promote products derived
17 * from this software without prior written permission. For written
18 * permission, please contact clarkware@clarkware.com.
19 *
20 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
21 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
22 * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
23 * CLARKWARE CONSULTING OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
25 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
26 * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
27 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
28 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
29 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 package jp.sourceforge.rpn_computer.node;
33
34 import jp.sourceforge.rpn_computer.ParseException;
35 import jp.sourceforge.rpn_computer.RpnCompileContext;
36 import jp.sourceforge.rpn_computer.RpnNode;
37 import jp.sourceforge.rpn_computer.token.AnyCharacterNotSkipTokenInfo;
38 import jp.sourceforge.rpn_computer.token.SkipTokenInfo;
39 import jp.sourceforge.tokenizer.EofToken;
40 import jp.sourceforge.tokenizer.Token;
41 import jp.sourceforge.tokenizer.TokenInfo;
42 import jp.sourceforge.tokenizer.Tokenizer;
43
44 /**
45 * <p>
46 * ExpressionStatementを表すノードです。
47 * </p>
48 *
49 * @author uguu@users.sourceforge.jp
50 */
51 public final class ExpressionStatementNode extends AbstractNode {
52
53 /**
54 * {@inheritDoc}
55 */
56 public void parse(Tokenizer tokenizer) {
57 RpnNode node = new AdditiveExpressionNode();
58 node.parse(tokenizer);
59 this.addNode(node);
60
61 TokenInfo[] readTokenInfos = new TokenInfo[] { new AnyCharacterNotSkipTokenInfo(), };
62 TokenInfo[] skipTokenInfos = new TokenInfo[] { new SkipTokenInfo() };
63 tokenizer.read(readTokenInfos, skipTokenInfos);
64 Token token = tokenizer.current();
65 if (!(token instanceof EofToken)) {
66 throw new ParseException(token, new TokenInfo[0]);
67 }
68 }
69
70 /**
71 * {@inheritDoc}
72 */
73 public String toString() {
74 return "expression statement\n" + this.toChildrenString();
75 }
76
77 /**
78 * {@inheritDoc}
79 */
80 public void compile(RpnCompileContext context) {
81 this.getChildren()[0].compile(context);
82 }
83 }