Add label in parse tree for code generation

2 files changed, 4 insertions, 1 deletions

diff --git a/tree.c b/tree.c
index e9d84e7..dabbb39 100644
--- a/tree.c
+++ b/tree.c
@@ -23,6 +23,7 @@ ptree *l, *r;
 	t->r = r;
 	t->ret_type = 0;
 	t->attr.nval = 0;
+	t->label = -1;
 
 	return t;
 }
@@ -237,7 +238,7 @@ int spaces;
 		fprintf(stderr, "[?: %d]", t->type);
 		yyerror("Error in tree_print");
 	}
-	fprintf(stderr," %d\n", t->ret_type);
+	fprintf(stderr," %d: L %d\n", t->ret_type, t->label);
 	aux_tree_print(t->l, spaces + 2);
 	aux_tree_print(t->r, spaces + 2);
 }
diff --git a/tree.h b/tree.h
index b0a1085..cd8a947 100644
--- a/tree.h
+++ b/tree.h
@@ -16,6 +16,8 @@ typedef struct parse_tree {
 	} attr;
 	int ret_type;
 	struct parse_tree *l, *r;
+
+	int label;
 } ptree;
 
 void aux_tree_print(ptree*, int);