X-Git-Url: http://git.megacz.com/?p=sbp.git;a=blobdiff_plain;f=src%2Fedu%2Fberkeley%2Fsbp%2FParser.java;h=cbf9b479f5bfb7e7fd763c5e08a68dc03ac450a4;hp=c270a90b3d434bf88ecb49ad39814ba1f7547503;hb=c366dacc334fe2e35835164f5a37d3eebb2ca6d5;hpb=526da96dd06e152d194ec92c9ef9df6085a1251b

diff --git a/src/edu/berkeley/sbp/Parser.java b/src/edu/berkeley/sbp/Parser.java
index c270a90..cbf9b47 100644
--- a/src/edu/berkeley/sbp/Parser.java
+++ b/src/edu/berkeley/sbp/Parser.java
@@ -37,11 +37,10 @@ public abstract class Parser<T extends Token, R> {
         GSS gss = new GSS();
         Token.Location loc = input.getLocation();
         GSS.Phase current = gss.new Phase(null, this, null, input.next(1, 0, 0), loc, null);
-        current.newNode(null, Forest.leaf(null, null, null), pt.start, true);
+        current.newNode(null, Forest.leaf(null, null), pt.start, true);
         int count = 1;
         for(;;) {
             loc = input.getLocation();
-            //current.checkFailure();
             current.reduce();
             Forest forest = current.token==null ? null : shiftedToken((T)current.token, loc);
             GSS.Phase next = gss.new Phase(current, this, current, input.next(count, gss.resets, gss.waits), loc, forest);
@@ -162,8 +161,18 @@ public abstract class Parser<T extends Token, R> {
         }
 
         /** a single state in the LR table and the transitions possible from it */
-        public class State implements Comparable<Table.State>, Iterable<Position> {
+
+        public class State implements Comparable<Table.State>, IntegerMappable, Iterable<Position> {
         
+            public int toInt() { return idx; }
+
+            public boolean lame() {
+                for(Position p : this)
+                    for(Position p2 = p; p2!=null; p2=p2.next())
+                        if (p2.isLast() && !p2.owner().lame)
+                            return false;
+                return true;
+            }
             /*
             public boolean isResolvable(Token t) {
                 boolean found = false;
@@ -311,7 +320,13 @@ public abstract class Parser<T extends Token, R> {
                 }
             }
 
-            public String toString() { return "state["+idx+"]"; }
+            public String toString() {
+                //return "state["+idx+"]";
+                StringBuffer ret = new StringBuffer();
+                ret.append("state["+idx+"]: ");
+                for(Position p : this) ret.append("{"+p+"}  ");
+                return ret.toString();
+            }
 
             public int compareTo(Table.State s) { return idx==s.idx ? 0 : idx < s.idx ? -1 : 1; }
         }