2003/06/28 06:54:18

[org.ibex.core.git] / src / gnu / regexp / RETokenRange.java

diff --git a/src/gnu/regexp/RETokenRange.java b/src/gnu/regexp/RETokenRange.java
new file mode 100644 (file)
index 0000000..eb3e25c
--- /dev/null
+++ b/src/gnu/regexp/RETokenRange.java
@@ -0,0 +1,51 @@
+/*
+ *  gnu/regexp/RETokenRange.java
+ *  Copyright (C) 1998-2001 Wes Biggs
+ *
+ *  This library is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU Lesser General Public License as published
+ *  by the Free Software Foundation; either version 2.1 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This library is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU Lesser General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Lesser General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+package gnu.regexp;
+
+final class RETokenRange extends REToken {
+  private char lo, hi;
+  private boolean insens;
+
+  RETokenRange(int subIndex, char lo, char hi, boolean ins) {
+    super(subIndex);
+    this.lo = (insens = ins) ? Character.toLowerCase(lo) : lo;
+    this.hi = ins ? Character.toLowerCase(hi) : hi;
+  }
+
+  int getMinimumLength() {
+    return 1;
+  }
+
+    boolean match(CharIndexed input, REMatch mymatch) {
+       char c = input.charAt(mymatch.index);
+       if (c == CharIndexed.OUT_OF_BOUNDS) return false;
+       if (insens) c = Character.toLowerCase(c);
+       if ((c >= lo) && (c <= hi)) {
+           ++mymatch.index;
+           return next(input, mymatch);
+       }
+       return false;
+    }
+    
+  void dump(StringBuffer os) {
+    os.append(lo).append('-').append(hi);
+  }
+}
+