1 /* gnu/regexp/RETokenEnd.java 2 Copyright (C) 2006 Free Software Foundation, Inc. 3 4 This file is part of GNU Classpath. 5 6 GNU Classpath is free software; you can redistribute it and/or modify 7 it under the terms of the GNU General Public License as published by 8 the Free Software Foundation; either version 2, or (at your option) 9 any later version. 10 11 GNU Classpath is distributed in the hope that it will be useful, but 12 WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 General Public License for more details. 15 16 You should have received a copy of the GNU General Public License 17 along with GNU Classpath; see the file COPYING. If not, write to the 18 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 19 02110-1301 USA. 20 21 Linking this library statically or dynamically with other modules is 22 making a combined work based on this library. Thus, the terms and 23 conditions of the GNU General Public License cover the whole 24 combination. 25 26 As a special exception, the copyright holders of this library give you 27 permission to link this library with independent modules to produce an 28 executable, regardless of the license terms of these independent 29 modules, and to copy and distribute the resulting executable under 30 terms of your choice, provided that you also meet, for each linked 31 independent module, the terms and conditions of the license of that 32 module. An independent module is a module which is not derived from 33 or based on this library. If you modify this library, you may extend 34 this exception to your version of the library, but you are not 35 obligated to do so. If you do not wish to do so, delete this 36 exception statement from your version. */ 37 38 39 package gnu.java.util.regex; 40 41 import gnu.java.lang.CPStringBuilder; 42 43 final class RETokenEnd extends REToken 44 { 45 /** 46 * Indicates whether this token should match on a line break. 47 */ 48 private String newline; 49 private boolean check_java_line_terminators; 50 51 /** 52 * Indicates whether this token is a real one generated at compile time, 53 * or a fake one temporarily added by RE#getMatchImpl. 54 */ 55 private boolean fake = false; 56 RETokenEnd(int subIndex, String newline)57 RETokenEnd (int subIndex, String newline) 58 { 59 super (subIndex); 60 this.newline = newline; 61 this.check_java_line_terminators = false; 62 } 63 RETokenEnd(int subIndex, String newline, boolean b)64 RETokenEnd (int subIndex, String newline, boolean b) 65 { 66 super (subIndex); 67 this.newline = newline; 68 this.check_java_line_terminators = b; 69 } 70 setFake(boolean fake)71 void setFake (boolean fake) 72 { 73 this.fake = fake; 74 } 75 getMaximumLength()76 int getMaximumLength () 77 { 78 return 0; 79 } 80 match(CharIndexed input, REMatch mymatch)81 boolean match (CharIndexed input, REMatch mymatch) 82 { 83 if (!fake) 84 return super.match (input, mymatch); 85 return super.matchFake (input, mymatch); 86 } 87 matchThis(CharIndexed input, REMatch mymatch)88 REMatch matchThis (CharIndexed input, REMatch mymatch) 89 { 90 char ch = input.charAt (mymatch.index); 91 if (ch == CharIndexed.OUT_OF_BOUNDS) 92 return ((mymatch.eflags & RE.REG_NOTEOL) > 0) ? null : mymatch; 93 if (check_java_line_terminators) 94 { 95 if (ch == '\n') 96 { 97 char ch1 = input.charAt (mymatch.index - 1); 98 if (ch1 == '\r') 99 return null; 100 return mymatch; 101 } 102 if (ch == '\r') 103 return mymatch; 104 if (ch == '\u0085') 105 return mymatch; // A next-line character 106 if (ch == '\u2028') 107 return mymatch; // A line-separator character 108 if (ch == '\u2029') 109 return mymatch; // A paragraph-separator character 110 return null; 111 } 112 if (newline != null) 113 { 114 char z; 115 int i = 0; // position in newline 116 do 117 { 118 z = newline.charAt (i); 119 if (ch != z) 120 return null; 121 ++i; 122 ch = input.charAt (mymatch.index + i); 123 } 124 while (i < newline.length ()); 125 126 return mymatch; 127 } 128 return null; 129 } 130 returnsFixedLengthMatches()131 boolean returnsFixedLengthMatches () 132 { 133 return true; 134 } 135 findFixedLengthMatches(CharIndexed input, REMatch mymatch, int max)136 int findFixedLengthMatches (CharIndexed input, REMatch mymatch, int max) 137 { 138 REMatch m = (REMatch) mymatch.clone (); 139 REToken tk = (REToken) this.clone (); 140 tk.chain (null); 141 if (tk.match (input, m)) 142 return max; 143 else 144 return 0; 145 } 146 dump(CPStringBuilder os)147 void dump (CPStringBuilder os) 148 { 149 os.append ('$'); 150 } 151 } 152