Update lexer.c

lexer.c

@@ -8,7 +8,8 @@ typedef struct Exploration Exploration;
 
 enum opcode {
     STRING,
-    AND
+    AND,
+    STAR
 };
 struct Exploration
 {
@@ -78,6 +79,13 @@ Node *mkAnd(Node *node1, Node *node2)
     return node;
 }
 
+Node *mkStar(Node *child)
+{
+    Node *node= mkNode(STAR);
+    node->children[0]= child;
+    return node;
+}
+
 
 int execute(Node *node, Exploration *in)
 {
@@ -107,6 +115,10 @@ int execute(Node *node, Exploration *in)
           return execute(node->children[1], in);
       }
       }
+      case STAR: {
+      //TODO
+      return 0;
+      }
     }
     printf("this cannot happen\n");
     abort();
@@ -118,21 +130,22 @@ int main(int argc, char **argv)
     Exploration *in= mkExploration("aabbcc");
 
     /*Node *program=
-	mkString("aabbcc");*/
+	mkString("aabbcc");
 
     Node *program=
 	mkAnd(mkString("aab"),
-	      mkString("bcc"));
+	      mkString("bcc"));*/
 
-    /*Node *program=
+    Node *program=
 	mkAnd(mkString("aa"),
 	      mkAnd(mkString("bb"),
-		    mkString("cc"));
+		    mkString("cc")));
 
-    Node *program=
+    /*Node *program=
 	      mkAnd(mkStar(mkString("a")),       // "a"*"b"*"c"*
 		    mkAnd(mkStar(mkString("b")),
 			  mkStar(mkString("c")));*/
+
     if (execute(program, in)<=0)
     {
         printf("no match\n");