con_str = data_con_str data_con
prefix_parser = mk_parser prefix_prec prefix_stmts body
- prefix_stmts -- T a b c
- = (if not (isSym con_str) then
- [bindLex (ident_pat con_str)]
- else [read_punc "(", bindLex (symbol_pat con_str), read_punc ")"])
- ++ read_args
+
+ read_prefix_con
+ | isSym con_str = [read_punc "(", bindLex (symbol_pat con_str), read_punc ")"]
+ | otherwise = [bindLex (ident_pat con_str)]
+ read_infix_con
+ | isSym con_str = [bindLex (symbol_pat con_str)]
+ | otherwise = [read_punc "`", bindLex (ident_pat con_str), read_punc "`"]
+
+ prefix_stmts -- T a b c
+ = read_prefix_con ++ read_args
+
infix_stmts -- a %% b, or a `T` b
= [read_a1]
- ++ (if isSym con_str
- then [bindLex (symbol_pat con_str)]
- else [read_punc "`", bindLex (ident_pat con_str), read_punc "`"])
+ ++ read_infix_con
++ [read_a2]
record_stmts -- T { f1 = a, f2 = b }
- = [bindLex (ident_pat (wrapOpParens con_str)),
- read_punc "{"]
+ = read_prefix_con
+ ++ [read_punc "{"]
++ concat (intersperse [read_punc ","] field_stmts)
++ [read_punc "}"]