StackEntry.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;
21
22final class StackEntry {
23    int type;
24    private int E1, E2, E3, E4;
25
26    // first union member
27    /* byte code position */
28    void setStatePCode(final int pcode) {
29        E1 = pcode;
30    }
31    int getStatePCode() {
32        return E1;
33    }
34    /* string position */
35    void setStatePStr(final int pstr) {
36        E2 = pstr;
37    }
38    int getStatePStr() {
39        return E2;
40    }
41    /* previous char position of pstr */
42    void setStatePStrPrev(final int pstrPrev) {
43        E3 = pstrPrev;
44    }
45    int getStatePStrPrev() {
46        return E3;
47    }
48
49    void setStateCheck(final int check) {
50        E4 = check;
51    }
52    int getStateCheck() {
53        return E4;
54    }
55
56    // second union member
57    /* for OP_REPEAT_INC, OP_REPEAT_INC_NG */
58    void setRepeatCount(final int count) {
59        E1 = count;
60    }
61    int getRepeatCount() {
62        return E1;
63    }
64    void decreaseRepeatCount() {
65        E1--;
66    }
67    void increaseRepeatCount() {
68        E1++;
69    }
70    /* byte code position (head of repeated target) */
71    void setRepeatPCode(final int pcode) {
72        E2 = pcode;
73    }
74    int getRepeatPCode() {
75        return E2;
76    }
77    /* repeat id */
78    void setRepeatNum(final int num) {
79        E3 = num;
80    }
81    int getRepeatNum() {
82        return E3;
83    }
84
85    // third union member
86    /* index of stack */ /*int repeat_inc struct*/
87    void setSi(final int si) {
88        E1 = si;
89    }
90    int getSi() {
91        return E1;
92    }
93
94    // fourth union member
95    /* memory num */
96    void setMemNum(final int num) {
97        E1 = num;
98    }
99    int getMemNum() {
100        return E1;
101    }
102    /* start/end position */
103    void setMemPstr(final int pstr) {
104        E2 = pstr;
105    }
106    int getMemPStr() {
107        return E2;
108    }
109
110    /* Following information is set, if this stack type is MEM-START */
111    /* prev. info (for backtrack  "(...)*" ) */
112    void setMemStart(final int start) {
113        E3 = start;
114    }
115    int getMemStart() {
116        return E3;
117    }
118    /* prev. info (for backtrack  "(...)*" ) */
119    void setMemEnd(final int end) {
120        E4 = end;
121    }
122    int getMemEnd() {
123        return E4;
124    }
125
126    // fifth union member
127    /* null check id */
128    void setNullCheckNum(final int num) {
129        E1 = num;
130    }
131    int getNullCheckNum() {
132        return E1;
133    }
134    /* start position */
135    void setNullCheckPStr(final int pstr) {
136        E2 = pstr;
137    }
138    int getNullCheckPStr() {
139        return E2;
140    }
141
142    // sixth union member
143    /* byte code position */
144    void setCallFrameRetAddr(final int addr) {
145        E1 = addr;
146    }
147    int getCallFrameRetAddr() {
148        return E1;
149    }
150    /* null check id */
151    void setCallFrameNum(final int num) {
152        E2 = num;
153    }
154    int getCallFrameNum() {
155        return E2;
156    }
157    /* string position */
158    void setCallFramePStr(final int pstr) {
159        E3 = pstr;
160    }
161    int getCallFramePStr() {
162        return E3;
163    }
164}
165