jdk8-mips64-public/nashorn: src/jdk/nashorn/internal/runtime/regexp/joni/OptAnchorInfo.java@e1e27c4262be

     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;

    22 import jdk.nashorn.internal.runtime.regexp.joni.constants.AnchorType;

    24 final class OptAnchorInfo implements AnchorType {

    25     int leftAnchor;

    26     int rightAnchor;

    28     void clear() {

    29         leftAnchor = rightAnchor = 0;

    30     }

    32     void copy(final OptAnchorInfo other) {

    33         leftAnchor = other.leftAnchor;

    34         rightAnchor = other.rightAnchor;

    35     }

    37     void concat(final OptAnchorInfo left, final OptAnchorInfo right, final int leftLength, final int rightLength) {

    38         leftAnchor = left.leftAnchor;

    39         if (leftLength == 0) {

    40             leftAnchor |= right.leftAnchor;

    41         }

    43         rightAnchor = right.rightAnchor;

    44         if (rightLength == 0) {

    45             rightAnchor |= left.rightAnchor;

    46         }

    47     }

    49     boolean isSet(final int anchor) {

    50         if ((leftAnchor & anchor) != 0) {

    51             return true;

    52         }

    53         return (rightAnchor & anchor) != 0;

    54     }

    56     void add(final int anchor) {

    57         if (isLeftAnchor(anchor)) {

    58             leftAnchor |= anchor;

    59         } else {

    60             rightAnchor |= anchor;

    61         }

    62     }

    64     void remove(final int anchor) {

    65         if (isLeftAnchor(anchor)) {

    66             leftAnchor &= ~anchor;

    67         } else {

    68             rightAnchor &= ~anchor;

    69         }

    70     }

    72     void altMerge(final OptAnchorInfo other) {

    73         leftAnchor &= other.leftAnchor;

    74         rightAnchor &= other.rightAnchor;

    75     }

    77     static boolean isLeftAnchor(final int anchor) { // make a mask for it ?

    78         return !(anchor == END_BUF || anchor == SEMI_END_BUF ||

    79                  anchor == END_LINE || anchor == PREC_READ ||

    80                  anchor == PREC_READ_NOT);

    81     }

    83     static String anchorToString(final int anchor) {

    84         final StringBuffer s = new StringBuffer("[");

    86         if ((anchor & AnchorType.BEGIN_BUF) !=0 ) {

    87             s.append("begin-buf ");

    88         }

    89         if ((anchor & AnchorType.BEGIN_LINE) !=0 ) {

    90             s.append("begin-line ");

    91         }

    92         if ((anchor & AnchorType.BEGIN_POSITION) !=0 ) {

    93             s.append("begin-pos ");

    94         }

    95         if ((anchor & AnchorType.END_BUF) !=0 ) {

    96             s.append("end-buf ");

    97         }

    98         if ((anchor & AnchorType.SEMI_END_BUF) !=0 ) {

    99             s.append("semi-end-buf ");

   100         }

   101         if ((anchor & AnchorType.END_LINE) !=0 ) {

   102             s.append("end-line ");

   103         }

   104         if ((anchor & AnchorType.ANYCHAR_STAR) !=0 ) {

   105             s.append("anychar-star ");

   106         }

   107         if ((anchor & AnchorType.ANYCHAR_STAR_ML) !=0 ) {

   108             s.append("anychar-star-pl ");

   109         }

   110         s.append("]");

   112         return s.toString();

   113     }

   114 }

Mercurial > jdk8-mips64-public > nashorn / file revision