AnchorNode.java revision 953:221a84ef44c0 
1/*
2 * Permission is hereby granted, free of charge, to any person obtaining a copy of
3 * this software and associated documentation files (the "Software"), to deal in
4 * the Software without restriction, including without limitation the rights to
5 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
6 * of the Software, and to permit persons to whom the Software is furnished to do
7 * so, subject to the following conditions:
8 *
9 * The above copyright notice and this permission notice shall be included in all
10 * copies or substantial portions of the Software.
11 *
12 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
13 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
14 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
15 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
16 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
17 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
18 * SOFTWARE.
19 */
20package jdk.nashorn.internal.runtime.regexp.joni.ast;
21
22import jdk.nashorn.internal.runtime.regexp.joni.constants.AnchorType;
23
24public final class AnchorNode extends Node implements AnchorType {
25    public int type;
26    public Node target;
27    public int charLength;
28
29    public AnchorNode(final int type) {
30        this.type = type;
31        charLength = -1;
32    }
33
34    @Override
35    public int getType() {
36        return ANCHOR;
37    }
38
39    @Override
40    protected void setChild(final Node newChild) {
41        target = newChild;
42    }
43
44    @Override
45    protected Node getChild() {
46        return target;
47    }
48
49    public void setTarget(final Node tgt) {
50        target = tgt;
51        tgt.parent = this;
52    }
53
54    @Override
55    public String getName() {
56        return "Anchor";
57    }
58
59    @Override
60    public String toString(final int level) {
61        final StringBuilder value = new StringBuilder();
62        value.append("\n  type: " + typeToString());
63        value.append("\n  target: " + pad(target, level + 1));
64        return value.toString();
65    }
66
67    public String typeToString() {
68        final StringBuilder type = new StringBuilder();
69        if (isType(BEGIN_BUF)) type.append("BEGIN_BUF ");
70        if (isType(BEGIN_LINE)) type.append("BEGIN_LINE ");
71        if (isType(BEGIN_POSITION)) type.append("BEGIN_POSITION ");
72        if (isType(END_BUF)) type.append("END_BUF ");
73        if (isType(SEMI_END_BUF)) type.append("SEMI_END_BUF ");
74        if (isType(END_LINE)) type.append("END_LINE ");
75        if (isType(WORD_BOUND)) type.append("WORD_BOUND ");
76        if (isType(NOT_WORD_BOUND)) type.append("NOT_WORD_BOUND ");
77        if (isType(WORD_BEGIN)) type.append("WORD_BEGIN ");
78        if (isType(WORD_END)) type.append("WORD_END ");
79        if (isType(PREC_READ)) type.append("PREC_READ ");
80        if (isType(PREC_READ_NOT)) type.append("PREC_READ_NOT ");
81        if (isType(LOOK_BEHIND)) type.append("LOOK_BEHIND ");
82        if (isType(LOOK_BEHIND_NOT)) type.append("LOOK_BEHIND_NOT ");
83        if (isType(ANYCHAR_STAR)) type.append("ANYCHAR_STAR ");
84        if (isType(ANYCHAR_STAR_ML)) type.append("ANYCHAR_STAR_ML ");
85        return type.toString();
86    }
87
88    private boolean isType(final int type) {
89        return (this.type & type) != 0;
90    }
91
92}
93