Better support for binops in formatter

1 files changed, 3 insertions, 0 deletions

diff --git a/src/ast.h b/src/ast.h
index 8facc202..30c413ca 100644
--- a/src/ast.h
+++ b/src/ast.h
@@ -274,6 +274,7 @@ typedef enum {
     Extend,
     ExplicitlyTyped,
 } ast_e;
+#define NUM_AST_TAGS (ExplicitlyTyped + 1)
 
 struct ast_s {
     ast_e tag;
@@ -473,6 +474,8 @@ struct ast_s {
     } __data;
 };
 
+extern const int op_tightness[NUM_AST_TAGS];
+
 const char *ast_source(ast_t *ast);
 
 Text_t ast_to_sexp(ast_t *ast);