Replace java.util.regex.* with the new regular expression engine

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

classpath/java/util/regex/TrivialMatcher.java

@@ -0,0 +1,48 @@
+/* Copyright (c) 2008-2013, Avian Contributors
+
+   Permission to use, copy, modify, and/or distribute this software
+   for any purpose with or without fee is hereby granted, provided
+   that the above copyright notice and this permission notice appear
+   in all copies.
+
+   There is NO WARRANTY for this software.  See license.txt for
+   details. */
+
+package java.util.regex;
+
+/**
+ * This is a work in progress.
+ * 
+ * @author zsombor and others
+ */
+class TrivialMatcher extends Matcher {
+  private final String pattern;
+
+  TrivialMatcher(String pattern, CharSequence input) {
+    super(input);
+    this.pattern = pattern;
+  }
+
+  public boolean matches() {
+    if (pattern.equals(input.toString())) {
+      start = 0;
+      end = input.length();
+      return true;
+    } else {
+      return false;
+    }
+  }
+
+  public boolean find(int start) {
+    String p = pattern;
+    int i = TrivialPattern.indexOf(input, p, start);
+    if (i >= 0) {
+      this.start = i;
+      this.end = i + p.length();
+      return true;
+    } else {
+      return false;
+    }
+  }
+}
+