AnchorNode.java revision 1088:7e62d98d4625 
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
24@SuppressWarnings("javadoc")
25public final class AnchorNode extends Node implements AnchorType {
26    public int type;
27    public Node target;
28    public int charLength;
29
30    public AnchorNode(final int type) {
31        this.type = type;
32        charLength = -1;
33    }
34
35    @Override
36    public int getType() {
37        return ANCHOR;
38    }
39
40    @Override
41    protected void setChild(final Node newChild) {
42        target = newChild;
43    }
44
45    @Override
46    protected Node getChild() {
47        return target;
48    }
49
50    public void setTarget(final Node tgt) {
51        target = tgt;
52        tgt.parent = this;
53    }
54
55    @Override
56    public String getName() {
57        return "Anchor";
58    }
59
60    @Override
61    public String toString(final int level) {
62        final StringBuilder value = new StringBuilder();
63        value.append("\n  type: " + typeToString());
64        value.append("\n  target: " + pad(target, level + 1));
65        return value.toString();
66    }
67
68    public String typeToString() {
69        final StringBuilder sb = new StringBuilder();
70        if (isType(BEGIN_BUF)) {
71            sb.append("BEGIN_BUF ");
72        }
73        if (isType(BEGIN_LINE)) {
74            sb.append("BEGIN_LINE ");
75        }
76        if (isType(BEGIN_POSITION)) {
77            sb.append("BEGIN_POSITION ");
78        }
79        if (isType(END_BUF)) {
80            sb.append("END_BUF ");
81        }
82        if (isType(SEMI_END_BUF)) {
83            sb.append("SEMI_END_BUF ");
84        }
85        if (isType(END_LINE)) {
86            sb.append("END_LINE ");
87        }
88        if (isType(WORD_BOUND)) {
89            sb.append("WORD_BOUND ");
90        }
91        if (isType(NOT_WORD_BOUND)) {
92            sb.append("NOT_WORD_BOUND ");
93        }
94        if (isType(WORD_BEGIN)) {
95            sb.append("WORD_BEGIN ");
96        }
97        if (isType(WORD_END)) {
98            sb.append("WORD_END ");
99        }
100        if (isType(PREC_READ)) {
101            sb.append("PREC_READ ");
102        }
103        if (isType(PREC_READ_NOT)) {
104            sb.append("PREC_READ_NOT ");
105        }
106        if (isType(LOOK_BEHIND)) {
107            sb.append("LOOK_BEHIND ");
108        }
109        if (isType(LOOK_BEHIND_NOT)) {
110            sb.append("LOOK_BEHIND_NOT ");
111        }
112        if (isType(ANYCHAR_STAR)) {
113            sb.append("ANYCHAR_STAR ");
114        }
115        if (isType(ANYCHAR_STAR_ML)) {
116            sb.append("ANYCHAR_STAR_ML ");
117        }
118        return sb.toString();
119    }
120
121    private boolean isType(final int t) {
122        return (this.type & t) != 0;
123    }
124
125}
126