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 */ 20package jdk.nashorn.internal.runtime.regexp.joni; 21 22import jdk.nashorn.internal.runtime.regexp.joni.ast.CClassNode; 23 24final class ApplyCaseFold { 25 26 // i_apply_case_fold 27 public static void apply(final int from, final int to, final Object o) { 28 final ApplyCaseFoldArg arg = (ApplyCaseFoldArg)o; 29 30 final ScanEnvironment env = arg.env; 31 final CClassNode cc = arg.cc; 32 final BitSet bs = cc.bs; 33 34 final 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()) { 49 cc.clearNotFlag(); 50 } 51 cc.addCodeRange(env, to, to); 52 } else { 53 if (cc.isNot()) { 54 bs.clear(to); 55 } else { 56 bs.set(to); 57 } 58 } 59 } 60 } // CASE_FOLD_IS_APPLIED_INSIDE_NEGATIVE_CCLASS 61 62 } 63 64 static final ApplyCaseFold INSTANCE = new ApplyCaseFold(); 65} 66