1 files changed, 69 insertions, 0 deletions
diff --git a/libgo/runtime/map.goc b/libgo/runtime/map.goc
new file mode 100644
index 000000000..d6308cbd3
--- /dev/null
+++ b/libgo/runtime/map.goc
@@ -0,0 +1,69 @@
+// Copyright 2010 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package runtime
+#include "map.h"
+#define nil NULL
+
+typedef unsigned char byte;
+typedef _Bool bool;
+
+typedef struct __go_map hmap;
+typedef struct __go_hash_iter hiter;
+
+/* Access a value in a map, returning a value and a presence indicator.  */
+
+func mapaccess2(h *hmap, key *byte, val *byte) (present bool) {
+	byte *mapval;
+	size_t valsize;
+
+	mapval = __go_map_index(h, key, 0);
+	valsize = h->__descriptor->__map_descriptor->__val_type->__size;
+	if (mapval == nil) {
+		__builtin_memset(val, 0, valsize);
+		present = 0;
+	} else {
+		__builtin_memcpy(val, mapval, valsize);
+		present = 1;
+	}
+}
+
+/* Optionally assign a value to a map (m[k] = v, p).  */
+
+func mapassign2(h *hmap, key *byte, val *byte, p bool) {
+	if (!p) {
+		__go_map_delete(h, key);
+	} else {
+		byte *mapval;
+		size_t valsize;
+
+		mapval = __go_map_index(h, key, 1);
+		valsize = h->__descriptor->__map_descriptor->__val_type->__size;
+		__builtin_memcpy(mapval, val, valsize);
+	}
+}
+
+/* Initialize a range over a map.  */
+
+func mapiterinit(h *hmap, it *hiter) {
+	__go_mapiterinit(h, it);
+}
+
+/* Move to the next iteration, updating *HITER.  */
+
+func mapiternext(it *hiter) {
+	__go_mapiternext(it);
+}
+
+/* Get the key of the current iteration.  */
+
+func mapiter1(it *hiter, key *byte) {
+	__go_mapiter1(it, key);
+}
+
+/* Get the key and value of the current iteration.  */
+
+func mapiter2(it *hiter, key *byte, val *byte) {
+	__go_mapiter2(it, key, val);
+}