altos/lisp: Add 'else' sematics to cond

[fw/altos] / src / lisp / ao_lisp_eval.c

diff --git a/src/lisp/ao_lisp_eval.c b/src/lisp/ao_lisp_eval.c
index b6cb4fd83cd6400c9bb3caac222dba08c5415af8..57227e9338d3c9a095da4ad430e9bc1ae10a61cc 100644 (file)
--- a/src/lisp/ao_lisp_eval.c
+++ b/src/lisp/ao_lisp_eval.c
@@ -324,6 +324,8 @@ ao_lisp_eval_cond(void)
                        return 0;
                }
                ao_lisp_v = ao_lisp_poly_cons(ao_lisp_v)->car;
+               if (ao_lisp_v == _ao_lisp_atom_else)
+                       ao_lisp_v = _ao_lisp_bool_true;
                ao_lisp_stack->state = eval_cond_test;
                if (!ao_lisp_stack_push())
                        return 0;
@@ -492,6 +494,9 @@ const char *ao_lisp_state_names[] = {
        "cond",
        "cond_test",
        "progn",
+       "while",
+       "while_test",
+       "macro",
 };
 
 /*