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  */
  20 package jdk.nashorn.internal.runtime.regexp.joni;
  21 
  22 import jdk.nashorn.internal.runtime.regexp.joni.ast.EncloseNode;
  23 import jdk.nashorn.internal.runtime.regexp.joni.ast.Node;
  24 import jdk.nashorn.internal.runtime.regexp.joni.exception.ErrorMessages;
  25 import jdk.nashorn.internal.runtime.regexp.joni.exception.InternalException;
  26 
  27 public final class UnsetAddrList {
  28     int num;
  29     Node[]targets;
  30     int[]offsets;
  31 
  32     public UnsetAddrList(int size) {
  33         targets = new Node[size];
  34         offsets = new int[size];
  35     }
  36 
  37     public void add(int offset, Node node) {
  38         if (num >= offsets.length) {
  39             Node []ttmp = new Node[targets.length << 1];
  40             System.arraycopy(targets, 0, ttmp, 0, num);
  41             targets = ttmp;
  42             int[]otmp = new int[offsets.length << 1];
  43             System.arraycopy(offsets, 0, otmp, 0, num);
  44             offsets = otmp;
  45         }
  46         targets[num] = node;
  47         offsets[num] = offset;
  48 
  49         num++;
  50     }
  51 
  52     public void fix(Regex regex) {
  53         for (int i=0; i<num; i++) {
  54             EncloseNode en = (EncloseNode)targets[i];
  55             if (!en.isAddrFixed()) new InternalException(ErrorMessages.ERR_PARSER_BUG);
  56             regex.code[offsets[i]] = en.callAddr; // is this safe ?
  57         }
  58     }
  59 
  60     public String toString() {
  61         StringBuilder value = new StringBuilder();
  62         if (num > 0) {
  63             for (int i=0; i<num; i++) {
  64                 value.append("offset + " + offsets[i] + " target: " + targets[i].getAddressName());
  65             }
  66         }
  67         return value.toString();
  68     }
  69 }