--- trunk/OOPSE/libBASS/parse_tree.c	2004/01/18 19:10:32	956
+++ trunk/OOPSE/libBASS/parse_tree.c	2004/01/19 16:08:21	957
@@ -98,12 +98,25 @@ void walk_down( struct node_tag* the_node, struct name
 	break;
 
       case ATOM_HEAD:
+	if( the_namespc.type != MOLECULE_HEAD && the_namespc.type != RIGIDBODY_HEAD ){
+	     print_tree_error( the_node,
+			    "The atom block is not in a molecule or rigidBody namespace" );
+	}
+	else{
+	  init_atom( the_node->index );
+	  current_namespc.index = the_node->index;
+	  current_namespc.type = the_node->type;
+	  walk_down( the_node->stmt_list, current_namespc );
+	}
+	break;
+
+      case RIGIDBODY_HEAD:
 	if( the_namespc.type != MOLECULE_HEAD ){
 	  print_tree_error( the_node,
-			    "The atom block is not in a molecule namespace" );
+			    "The rigid body block is not in a molecule namespace" );
 	}
 	else{
-	  init_atom( the_node->index );
+	  init_rigidbody( the_node->index );
 	  current_namespc.index = the_node->index;
 	  current_namespc.type = the_node->type;
 	  walk_down( the_node->stmt_list, current_namespc );
@@ -212,20 +225,20 @@ void walk_down( struct node_tag* the_node, struct name
 	break;
 
       case POSITION_STMT:
-	if( the_namespc.type != ATOM_HEAD ){
+	if( the_namespc.type != ATOM_HEAD && the_namespc.type != RIGIDBODY_HEAD){
 	  print_tree_error( the_node,
 			    "position statement is not located in an "
-			    "atom block" );
+			    "atom or rigidBody block" );
 	}
 	
 	init_position( the_node, the_namespc );
 	break;
 
       case ORIENTATION_STMT:
-	if( the_namespc.type != ATOM_HEAD ){
+	if( the_namespc.type != ATOM_HEAD && the_namespc.type != RIGIDBODY_HEAD){
 	  print_tree_error( the_node,
 			    "orientation statement is not located in an "
-			    "atom block" );
+			    "atom or rigidBody block" );
 	}
 	
 	init_orientation( the_node, the_namespc );
@@ -277,6 +290,12 @@ void print_tree_error( struct node_tag* err_node, char
 	     err_msg );
     break;
 
+  case RIGIDBODY_HEAD:
+    sprintf( painCave.errMsg,
+	     "Parse tree error: rigidBody head node error -> %s\n",
+	     err_msg );
+    break;
+
   case ATOM_HEAD:
     sprintf( painCave.errMsg,
 	     "Parse tree error: atom head node error [%d] -> %s\n",