Merge branch 'master' of ssh://git.gag.com/scm/git/fw/altos

1 files changed, 79 insertions, 0 deletions

diff --git a/src/scheme/ao_scheme_int.c b/src/scheme/ao_scheme_int.c
new file mode 100644
index 00000000..350a5d35
--- /dev/null
+++ b/src/scheme/ao_scheme_int.c
@@ -0,0 +1,79 @@
+/*
+ * 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"
+
+void
+ao_scheme_int_write(ao_poly p)
+{
+	int i = ao_scheme_poly_int(p);
+	printf("%d", i);
+}
+
+int32_t
+ao_scheme_poly_integer(ao_poly p)
+{
+	switch (ao_scheme_poly_base_type(p)) {
+	case AO_SCHEME_INT:
+		return ao_scheme_poly_int(p);
+	case AO_SCHEME_OTHER:
+		if (ao_scheme_other_type(ao_scheme_poly_other(p)) == AO_SCHEME_BIGINT)
+			return ao_scheme_bigint_int(ao_scheme_poly_bigint(p)->value);
+	}
+	return AO_SCHEME_NOT_INTEGER;
+}
+
+ao_poly
+ao_scheme_integer_poly(int32_t p)
+{
+	struct ao_scheme_bigint	*bi;
+
+	if (AO_SCHEME_MIN_INT <= p && p <= AO_SCHEME_MAX_INT)
+		return ao_scheme_int_poly(p);
+	bi = ao_scheme_alloc(sizeof (struct ao_scheme_bigint));
+	bi->value = ao_scheme_int_bigint(p);
+	return ao_scheme_bigint_poly(bi);
+}
+
+static void bigint_mark(void *addr)
+{
+	(void) addr;
+}
+
+static int bigint_size(void *addr)
+{
+	if (!addr)
+		return 0;
+	return sizeof (struct ao_scheme_bigint);
+}
+
+static void bigint_move(void *addr)
+{
+	(void) addr;
+}
+
+const struct ao_scheme_type ao_scheme_bigint_type = {
+	.mark = bigint_mark,
+	.size = bigint_size,
+	.move = bigint_move,
+	.name = "bigint",
+};
+
+void
+ao_scheme_bigint_write(ao_poly p)
+{
+	struct ao_scheme_bigint	*bi = ao_scheme_poly_bigint(p);
+
+	printf("%d", ao_scheme_bigint_int(bi->value));
+}