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authorErlang/OTP <[email protected]>2009-11-20 14:54:40 +0000
committerErlang/OTP <[email protected]>2009-11-20 14:54:40 +0000
commit84adefa331c4159d432d22840663c38f155cd4c1 (patch)
treebff9a9c66adda4df2106dfd0e5c053ab182a12bd /lib/erl_interface/src/decode/decode_ref.c
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The R13B03 release.OTP_R13B03
Diffstat (limited to 'lib/erl_interface/src/decode/decode_ref.c')
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diff --git a/lib/erl_interface/src/decode/decode_ref.c b/lib/erl_interface/src/decode/decode_ref.c
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+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 1998-2009. All Rights Reserved.
+ *
+ * The contents of this file are subject to the Erlang Public License,
+ * Version 1.1, (the "License"); you may not use this file except in
+ * compliance with the License. You should have received a copy of the
+ * Erlang Public License along with this software. If not, it can be
+ * retrieved online at http://www.erlang.org/.
+ *
+ * Software distributed under the License is distributed on an "AS IS"
+ * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+ * the License for the specific language governing rights and limitations
+ * under the License.
+ *
+ * %CopyrightEnd%
+ */
+#include <string.h>
+#include "eidef.h"
+#include "eiext.h"
+#include "putget.h"
+
+int ei_decode_ref(const char *buf, int *index, erlang_ref *p)
+{
+ const char *s = buf + *index;
+ const char *s0 = s;
+ int count, len, i;
+
+ switch (get8(s)) {
+ case ERL_REFERENCE_EXT:
+
+ /* first the nodename */
+ if (get8(s) != ERL_ATOM_EXT) return -1;
+
+ len = get16be(s);
+
+ if (p) {
+ memmove(p->node, s, len);
+ p->node[len] = (char)0;
+ }
+ s += len;
+
+ /* now the numbers: num (4), creation (1) */
+ if (p) {
+ p->n[0] = get32be(s);
+ p->len = 1;
+ p->creation = get8(s) & 0x03;
+ }
+ else s += 5;
+
+ *index += s-s0;
+
+ return 0;
+ break;
+
+ case ERL_NEW_REFERENCE_EXT:
+ /* first the integer count */
+ count = get16be(s);
+ if (p) p->len = count;
+
+ /* then the nodename */
+ if (get8(s) != ERL_ATOM_EXT) return -1;
+ len = get16be(s);
+
+ if (p) {
+ memmove(p->node, s, len);
+ p->node[len] = (char)0;
+ }
+ s += len;
+
+ /* creation */
+ if (p) {
+ p->creation = get8(s) & 0x03;
+ }
+ else s += 1;
+
+ /* finally the id integers */
+ if (p) {
+ for (i = 0; (i<count) && (i<3); i++) {
+ p->n[i] = get32be(s);
+ }
+ }
+ else s += 4 * count;
+
+ *index += s-s0;
+
+ return 0;
+ break;
+
+ default:
+ return -1;
+ }
+}