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.CClassNode;


  23 
  24 final class ApplyCaseFold {
  25 
  26     // i_apply_case_fold
  27     public void apply(int from, int to, Object o) {
  28         ApplyCaseFoldArg arg = (ApplyCaseFoldArg)o;
  29 
  30         ScanEnvironment env = arg.env;
  31         CClassNode cc = arg.cc;
  32         BitSet bs = cc.bs;
  33 

  34         boolean inCC = cc.isCodeInCC(from);
  35 
  36         if (Config.CASE_FOLD_IS_APPLIED_INSIDE_NEGATIVE_CCLASS) {
  37             if ((inCC && !cc.isNot()) || (!inCC && cc.isNot())) {
  38                 if (to >= BitSet.SINGLE_BYTE_SIZE) {
  39                     cc.addCodeRange(env, to, to);
  40                 } else {
  41                     /* /(?i:[^A-C])/.match("a") ==> fail. */
  42                     bs.set(to);
  43                 }
  44             }
  45         } else {
  46             if (inCC) {
  47                 if (to >= BitSet.SINGLE_BYTE_SIZE) {
  48                     if (cc.isNot()) cc.clearNotFlag();
  49                     cc.addCodeRange(env, to, to);
  50                 } else {
  51                     if (cc.isNot()) {
  52                         bs.clear(to);
  53                     } else {
  54                         bs.set(to);
  55                     }
  56                 }
  57             }
  58         } // CASE_FOLD_IS_APPLIED_INSIDE_NEGATIVE_CCLASS

























  59 
  60     }
  61 
  62     static final ApplyCaseFold INSTANCE = new ApplyCaseFold();
  63 }
--- EOF ---