--- old/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/runtime/regexp/joni/StackEntry.java	2020-04-15 18:51:44.000000000 +0530
+++ /dev/null	2020-04-15 18:51:44.000000000 +0530
@@ -1,164 +0,0 @@
-/*
- * Permission is hereby granted, free of charge, to any person obtaining a copy of
- * this software and associated documentation files (the "Software"), to deal in
- * the Software without restriction, including without limitation the rights to
- * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
- * of the Software, and to permit persons to whom the Software is furnished to do
- * so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in all
- * copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- */
-package jdk.nashorn.internal.runtime.regexp.joni;
-
-final class StackEntry {
-    int type;
-    private int E1, E2, E3, E4;
-
-    // first union member
-    /* byte code position */
-    void setStatePCode(final int pcode) {
-        E1 = pcode;
-    }
-    int getStatePCode() {
-        return E1;
-    }
-    /* string position */
-    void setStatePStr(final int pstr) {
-        E2 = pstr;
-    }
-    int getStatePStr() {
-        return E2;
-    }
-    /* previous char position of pstr */
-    void setStatePStrPrev(final int pstrPrev) {
-        E3 = pstrPrev;
-    }
-    int getStatePStrPrev() {
-        return E3;
-    }
-
-    void setStateCheck(final int check) {
-        E4 = check;
-    }
-    int getStateCheck() {
-        return E4;
-    }
-
-    // second union member
-    /* for OP_REPEAT_INC, OP_REPEAT_INC_NG */
-    void setRepeatCount(final int count) {
-        E1 = count;
-    }
-    int getRepeatCount() {
-        return E1;
-    }
-    void decreaseRepeatCount() {
-        E1--;
-    }
-    void increaseRepeatCount() {
-        E1++;
-    }
-    /* byte code position (head of repeated target) */
-    void setRepeatPCode(final int pcode) {
-        E2 = pcode;
-    }
-    int getRepeatPCode() {
-        return E2;
-    }
-    /* repeat id */
-    void setRepeatNum(final int num) {
-        E3 = num;
-    }
-    int getRepeatNum() {
-        return E3;
-    }
-
-    // third union member
-    /* index of stack */ /*int repeat_inc struct*/
-    void setSi(final int si) {
-        E1 = si;
-    }
-    int getSi() {
-        return E1;
-    }
-
-    // fourth union member
-    /* memory num */
-    void setMemNum(final int num) {
-        E1 = num;
-    }
-    int getMemNum() {
-        return E1;
-    }
-    /* start/end position */
-    void setMemPstr(final int pstr) {
-        E2 = pstr;
-    }
-    int getMemPStr() {
-        return E2;
-    }
-
-    /* Following information is set, if this stack type is MEM-START */
-    /* prev. info (for backtrack  "(...)*" ) */
-    void setMemStart(final int start) {
-        E3 = start;
-    }
-    int getMemStart() {
-        return E3;
-    }
-    /* prev. info (for backtrack  "(...)*" ) */
-    void setMemEnd(final int end) {
-        E4 = end;
-    }
-    int getMemEnd() {
-        return E4;
-    }
-
-    // fifth union member
-    /* null check id */
-    void setNullCheckNum(final int num) {
-        E1 = num;
-    }
-    int getNullCheckNum() {
-        return E1;
-    }
-    /* start position */
-    void setNullCheckPStr(final int pstr) {
-        E2 = pstr;
-    }
-    int getNullCheckPStr() {
-        return E2;
-    }
-
-    // sixth union member
-    /* byte code position */
-    void setCallFrameRetAddr(final int addr) {
-        E1 = addr;
-    }
-    int getCallFrameRetAddr() {
-        return E1;
-    }
-    /* null check id */
-    void setCallFrameNum(final int num) {
-        E2 = num;
-    }
-    int getCallFrameNum() {
-        return E2;
-    }
-    /* string position */
-    void setCallFramePStr(final int pstr) {
-        E3 = pstr;
-    }
-    int getCallFramePStr() {
-        return E3;
-    }
-}