From b99be4933bcb850cbaf96f89750e925ecf2e8386 Mon Sep 17 00:00:00 2001 From: Felix Perktold Date: Tue, 23 Dec 2025 13:36:33 +0100 Subject: rename eq? to equal?, fix syntax error on empty newline --- lisp.y | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) (limited to 'lisp.y') diff --git a/lisp.y b/lisp.y index 5a39640..086ef93 100644 --- a/lisp.y +++ b/lisp.y @@ -8,21 +8,21 @@ int yyerror(const char *s); %} %union { - int ival; double dval; const char *strval; value *val; } %token NUMBER %token STRING SYMBOL -%token LPAREN RPAREN DOT QUOTE +%token LPAREN RPAREN DOT QUOTE NLINE %type expr atom list list_items %start exprs %% -exprs: expr +exprs: /* nothing */ + | expr { value *v = eval(global_env, $1); printf(";> "); @@ -38,7 +38,8 @@ exprs: expr expr: atom | list | LPAREN expr DOT expr RPAREN { $$ = cons($2, $4); } - | QUOTE expr { $$ = cons(make_symbol("quote"), cons($2, make_nil())); }; + | QUOTE expr { $$ = cons(make_symbol("quote"), cons($2, make_nil())); } + | NLINE { $$ = make_nil(); }; list: LPAREN list_items RPAREN { $$ = $2; }; -- cgit v1.2.3