needed for applet search

[jalview.git] / src / com / stevesoft / pat / CustomEndpoint.java

diff --git a/src/com/stevesoft/pat/CustomEndpoint.java b/src/com/stevesoft/pat/CustomEndpoint.java
new file mode 100755 (executable)
index 0000000..b8fc704
--- /dev/null
+++ b/src/com/stevesoft/pat/CustomEndpoint.java
@@ -0,0 +1,27 @@
+//\r
+// This software is now distributed according to\r
+// the Lesser Gnu Public License.  Please see\r
+// http://www.gnu.org/copyleft/lesser.txt for\r
+// the details.\r
+//    -- Happy Computing!\r
+//\r
+package com.stevesoft.pat;\r
+import java.util.Hashtable;\r
+\r
+/** This class is needed internally to make backtracking work\r
+  * correctly in user-defined patterns.\r
+  */\r
+class CustomEndpoint extends Pattern {\r
+    Custom c;\r
+    CustomEndpoint(Custom cm) { c = cm; }\r
+    public int matchInternal(int pos,Pthings pt) {\r
+        int npos = c.v.validate(pt.src,c.start,pos);\r
+        if(npos >= 0) \r
+            return nextMatch(npos,pt);\r
+        return -1;\r
+    }\r
+    public String toString() { return ""; }\r
+    Pattern clone1(Hashtable h) {\r
+        return new CustomEndpoint((Custom)c.clone(h));\r
+    }\r
+}\r