+/*
+ * Copyright © 2016 Keith Packard <keithp@keithp.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ */
+
+#include "ao_scheme.h"
+
+ao_poly
+ao_scheme_read_eval_print(void)
+{
+ ao_poly in, out = AO_SCHEME_NIL;
+ for(;;) {
+ in = ao_scheme_read();
+ if (in == _ao_scheme_atom_eof)
+ break;
+ out = ao_scheme_eval(in);
+ if (ao_scheme_exception) {
+ if (ao_scheme_exception & AO_SCHEME_EXIT)
+ break;
+ ao_scheme_exception = 0;
+ } else {
+ ao_scheme_poly_write(out);
+ putchar ('\n');
+ }
+ }
+ return out;
+}