EncloseNode.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.Option;
23import jdk.nashorn.internal.runtime.regexp.joni.constants.EncloseType;
24
25@SuppressWarnings("javadoc")
26public final class EncloseNode extends StateNode implements EncloseType {
27
28    public final int type;                // enclose type
29    public int regNum;
30    public int option;
31    public Node target;             /* EncloseNode : ENCLOSE_MEMORY */
32    public int callAddr;            // AbsAddrType
33    public int minLength;           // OnigDistance
34    public int maxLength;           // OnigDistance
35    public int charLength;
36    public int optCount;            // referenced count in optimize_node_left()
37
38    // node_new_enclose / onig_node_new_enclose
39    public EncloseNode(final int type) {
40        this.type = type;
41        callAddr = -1;
42    }
43
44    // node_new_enclose_memory
45    public EncloseNode() {
46        this(MEMORY);
47    }
48
49    // node_new_option
50    public EncloseNode(final int option, final int i) {
51        this(OPTION);
52        this.option = option;
53    }
54
55    @Override
56    public int getType() {
57        return ENCLOSE;
58    }
59
60    @Override
61    protected void setChild(final Node newChild) {
62        target = newChild;
63    }
64
65    @Override
66    protected Node getChild() {
67        return target;
68    }
69
70    public void setTarget(final Node tgt) {
71        target = tgt;
72        tgt.parent = this;
73    }
74
75    @Override
76    public String getName() {
77        return "Enclose";
78    }
79
80    @Override
81    public String toString(final int level) {
82        final StringBuilder value = new StringBuilder(super.toString(level));
83        value.append("\n  type: " + typeToString());
84        value.append("\n  regNum: " + regNum);
85        value.append("\n  option: " + Option.toString(option));
86        value.append("\n  target: " + pad(target, level + 1));
87        value.append("\n  callAddr: " + callAddr);
88        value.append("\n  minLength: " + minLength);
89        value.append("\n  maxLength: " + maxLength);
90        value.append("\n  charLength: " + charLength);
91        value.append("\n  optCount: " + optCount);
92
93        return value.toString();
94    }
95
96    public String typeToString() {
97        final StringBuilder types = new StringBuilder();
98        if (isStopBacktrack()) types.append("STOP_BACKTRACK ");
99        if (isMemory()) types.append("MEMORY ");
100        if (isOption()) types.append("OPTION ");
101
102        return types.toString();
103    }
104
105    public boolean isMemory() {
106        return (type & MEMORY) != 0;
107    }
108
109    public boolean isOption() {
110        return (type & OPTION) != 0;
111    }
112
113    public boolean isStopBacktrack() {
114        return (type & STOP_BACKTRACK) != 0;
115    }
116
117}
118