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 }