parse leg update

parse.leg

@@ -4,7 +4,7 @@
 #include <string.h>
 #include <stdlib.h>
 ;
-enum op { String, Query, Star, Plus } ;
+enum op { String, Query, Star, Plus, Or, And } ;
 
 typedef union Node Node;
 
@@ -12,6 +12,9 @@ struct String  { enum op type;  char *string; };
 struct Query   { enum op type;  Node *children[1]; };
 struct Star    { enum op type;  Node *children[1]; };
 struct Plus    { enum op type;  Node *children[1]; };
+struct Or      { enum op type;  Node *children[2]; };
+struct And     { enum op type;  Node *children[2]; };
+struct Class  { enum op type;  char *stringValue; int len; };
 
 union Node {
     enum op type;
@@ -19,6 +22,9 @@ union Node {
     struct Query Query;
     struct Star Star;
     struct Plus Plus;
+    struct Or Or;
+    struct And And;
+    struct Class Class;
 };
 
 Node *mkString(char *s)
@@ -29,6 +35,8 @@ Node *mkString(char *s)
     return node;
 }
 
+
+
 Node *mkQuery(Node *n)
 {
     Node *node= calloc(1, sizeof(struct Query));
@@ -37,6 +45,22 @@ Node *mkQuery(Node *n)
     return node;
 }
 
+Node *mkOr(Node *node1, Node *node2)
+{
+    Node *node= calloc(1, sizeof(struct Or));
+    node->Or.children[0]= node1;
+    node->Or.children[1]= node2;
+    return node;
+}
+
+Node *mkAnd(Node *node1, Node *node2)
+{
+    Node *node= calloc(1, sizeof(struct And));
+    node->And.children[0]= node1;
+    node->And.children[1]= node2;
+    return node;
+}
+
 Node *mkStar(Node *n)
 {
     Node *node= calloc(1, sizeof(struct Star));
@@ -45,6 +69,14 @@ Node *mkStar(Node *n)
     return node;
 }
 
+Node *mkClass(char* str)
+{
+    Node *node= calloc(1, sizeof(struct Class));
+    node->Class.stringValue= str;
+    node->Class.len=strlen(str);
+    return node;
+}
+
 Node *mkPlus(Node *n)
 {
     Node *node= calloc(1, sizeof(struct Plus));
@@ -71,6 +103,16 @@ void print(Node *node)
 	  print(node->Query.children[0]);
 	  printf("+");
 	  return;
+      case Or:
+      print(node->Or.children[0]);
+      print(node->Or.children[1]);
+      printf("Or");
+      return;
+      case And:
+      print(node->And.children[0]);
+      print(node->And.children[1]);
+      printf("And");
+      return;
     }
     abort();
 }
@@ -104,7 +146,10 @@ atom    = string | class
 
 string	= '"' < [^"]* > '"'     { $$ = mkString(yytext) } -
 
-class	= '[' ... ']'
+class	= '[' <[]*> ']'  { $$=mkClass(yytext) } -
+
+
+
 
 -	= space*