jdk8-mips64-public/nashorn: src/jdk/nashorn/internal/runtime/regexp/joni/ScannerSupport.java@98798a6336de (annotated)

src/jdk/nashorn/internal/runtime/regexp/joni/ScannerSupport.java@98798a6336de (annotated)

src/jdk/nashorn/internal/runtime/regexp/joni/ScannerSupport.java

Thu, 16 May 2013 19:52:39 +0200

author: hannesw
date: Thu, 16 May 2013 19:52:39 +0200
changeset 273: 98798a6336de
parent 115: e42fd1640ff9
child 447: 7503f30c1355
permissions: -rw-r--r--

8012359: Increase code coverage in Joni
Reviewed-by: jlaskey, lagergren

 /*
  * Permission is hereby granted, free of charge, to any person obtaining a copy of
  * this software and associated documentation files (the "Software"), to deal in
  * the Software without restriction, including without limitation the rights to
  * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
  * of the Software, and to permit persons to whom the Software is furnished to do
  * so, subject to the following conditions:
  *
  * The above copyright notice and this permission notice shall be included in all
  * copies or substantial portions of the Software.
  *
  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  * SOFTWARE.
  */
 package jdk.nashorn.internal.runtime.regexp.joni;
 import jdk.nashorn.internal.runtime.regexp.joni.encoding.IntHolder;
 import jdk.nashorn.internal.runtime.regexp.joni.exception.ErrorMessages;
 import jdk.nashorn.internal.runtime.regexp.joni.exception.InternalException;
 import jdk.nashorn.internal.runtime.regexp.joni.exception.SyntaxException;
 import jdk.nashorn.internal.runtime.regexp.joni.exception.ValueException;
 abstract class ScannerSupport extends IntHolder implements ErrorMessages {
     protected final char[] chars;       // pattern
     protected int p;                    // current scanner position
     protected int stop;                 // pattern end (mutable)
     private int lastFetched;            // last fetched value for unfetch support
     protected int c;                    // current code point
     private final int begin;            // pattern begin position for reset() support
     private final int end;              // pattern end position for reset() support
     protected int _p;                   // used by mark()/restore() to mark positions
     private final static int INT_SIGN_BIT = 1 << 31;
     protected ScannerSupport(char[] chars, int p, int end) {
         this.chars = chars;
         this.begin = p;
         this.end = end;
         reset();
     }
     protected int getBegin() {
         return begin;
     }
     protected int getEnd() {
         return end;
     }
     protected final int scanUnsignedNumber() {
         int last = c;
         int num = 0; // long ???
         while(left()) {
             fetch();
             if (Character.isDigit(c)) {
                 int onum = num;
                 num = num * 10 + EncodingHelper.digitVal(c);
                 if (((onum ^ num) & INT_SIGN_BIT) != 0) return -1;
             } else {
                 unfetch();
                 break;
             }
         }
         c = last;
         return num;
     }
     protected final int scanUnsignedHexadecimalNumber(int maxLength) {
         int last = c;
         int num = 0;
         while(left() && maxLength-- != 0) {
             fetch();
             if (EncodingHelper.isXDigit(c)) {
                 int onum = num;
                 int val = EncodingHelper.xdigitVal(c);
                 num = (num << 4) + val;
                 if (((onum ^ num) & INT_SIGN_BIT) != 0) return -1;
             } else {
                 unfetch();
                 break;
             }
         }
         c = last;
         return num;
     }
     protected final int scanUnsignedOctalNumber(int maxLength) {
         int last = c;
         int num = 0;
         while(left() && maxLength-- != 0) {
             fetch();
             if (Character.isDigit(c) && c < '8') {
                 int onum = num;
                 int val = EncodingHelper.odigitVal(c);
                 num = (num << 3) + val;
                 if (((onum ^ num) & INT_SIGN_BIT) != 0) return -1;
             } else {
                 unfetch();
                 break;
             }
         }
         c = last;
         return num;
     }
     protected final void reset() {
         p = begin;
         stop = end;
     }
     protected final void mark() {
         _p = p;
     }
     protected final void restore() {
         p = _p;
     }
     protected final void inc() {
         lastFetched = p;
         p++;
     }
     protected final void fetch() {
         lastFetched = p;
         c = chars[p++];
     }
     protected int fetchTo() {
         lastFetched = p;
         return chars[p++];
     }
     protected final void unfetch() {
         p = lastFetched;
     }
     protected final int peek() {
         return p < stop ? chars[p] : 0;
     }
     protected final boolean peekIs(int c) {
         return peek() == c;
     }
     protected final boolean left() {
         return p < stop;
     }
     protected void newSyntaxException(String message) {
         throw new SyntaxException(message);
     }
     protected void newValueException(String message) {
         throw new ValueException(message);
     }
     protected void newValueException(String message, String str) {
         throw new ValueException(message, str);
     }
     protected void newValueException(String message, int p, int end) {
         throw new ValueException(message, new String(chars, p, end - p));
     }
     protected void newInternalException(String message) {
         throw new InternalException(message);
     }
 }

Mercurial > jdk8-mips64-public > nashorn / annotate

src/jdk/nashorn/internal/runtime/regexp/joni/ScannerSupport.java@98798a6336de (annotated)

src/jdk/nashorn/internal/runtime/regexp/joni/ScannerSupport.java