add builtins, add pretty printing for lists, fix erroneous symbol x not found for forms (define, lambda ...) add check for head->type == VT_SYMBOL on forms (so a string cannot be misinterpreted as a form symbol), move is_integer from lisp.y to lisp.h/lisp.c

1 files changed, 9 insertions, 0 deletions

diff --git a/main.c b/main.c
index c9f9acd..f297402 100644
--- a/main.c
+++ b/main.c
@@ -12,6 +12,15 @@ env *global_env = NULL;
 int main(void) {
 	// init global env
 	global_env = env_create(NULL);
+	env_define(global_env, "cons", make_builtin(builtin_cons));
+	env_define(global_env, "car", make_builtin(builtin_car));
+	env_define(global_env, "cdr", make_builtin(builtin_cdr));
+	env_define(global_env, "null?", make_builtin(builtin_isnull));
+	env_define(global_env, "+", make_builtin(builtin_add));
+	env_define(global_env, "-", make_builtin(builtin_sub));
+	env_define(global_env, "*", make_builtin(builtin_mul));
+	env_define(global_env, "/", make_builtin(builtin_div));
+	env_define(global_env, "<=", make_builtin(builtin_le));
 	// START REPL
 	char* line;
 	while ((line = readline("λ > ")) != NULL) {