The R13B03 release.OTP_R13B03

1 files changed, 90 insertions, 0 deletions

diff --git a/lib/erl_interface/src/decode/decode_skip.c b/lib/erl_interface/src/decode/decode_skip.c
new file mode 100644
index 0000000000..2fc68a3601
--- /dev/null
+++ b/lib/erl_interface/src/decode/decode_skip.c
@@ -0,0 +1,90 @@
+/*
+ * %CopyrightBegin%
+ * 
+ * Copyright Ericsson AB 2002-2009. 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 "eidef.h"
+#include "eiext.h"
+#include "decode_skip.h"
+
+int ei_skip_term(const char* buf, int* index)
+{
+    int i, n, ty;
+
+    /* ASSERT(ep != NULL); */
+
+    ei_get_type_internal(buf, index, &ty, &n);
+    switch (ty) {
+    case ERL_ATOM_EXT:
+	/* FIXME: what if some weird locale is in use? */
+	if (ei_decode_atom(buf, index, NULL) < 0) return -1;
+	break;
+    case ERL_PID_EXT:
+	if (ei_decode_pid(buf, index, NULL) < 0) return -1;
+	break;
+    case ERL_PORT_EXT:
+	if (ei_decode_port(buf, index, NULL) < 0) return -1;
+	break;
+    case ERL_NEW_REFERENCE_EXT:
+    case ERL_REFERENCE_EXT:
+	if (ei_decode_ref(buf, index, NULL) < 0) return -1;
+	break;
+    case ERL_NIL_EXT:
+	if (ei_decode_list_header(buf, index, &n) < 0) return -1;
+	break;
+    case ERL_LIST_EXT:
+	if (ei_decode_list_header(buf, index, &n) < 0) return -1;
+	for (i = 0; i < n; ++i)
+	    ei_skip_term(buf, index);
+	if (ei_get_type_internal(buf, index, &ty, &n) < 0) return -1;
+	if (ty != ERL_NIL_EXT)
+	    ei_skip_term(buf, index);
+	else
+	    if (ei_decode_list_header(buf, index, &n) < 0) return -1;
+	break;
+    case ERL_STRING_EXT:
+	if (ei_decode_string(buf, index, NULL) < 0) return -1;
+	break;
+    case ERL_SMALL_TUPLE_EXT:
+    case ERL_LARGE_TUPLE_EXT:
+	if (ei_decode_tuple_header(buf, index, &n) < 0) return -1;	
+	for (i = 0; i < n; ++i)
+	    ei_skip_term(buf, index);
+	break;
+    case ERL_BINARY_EXT:
+	if (ei_decode_binary(buf, index, NULL, NULL) < 0)
+	    return -1;
+	break;
+    case ERL_SMALL_INTEGER_EXT:
+    case ERL_INTEGER_EXT:
+	if (ei_decode_long(buf, index, NULL) < 0) return -1;
+	break;
+    case ERL_SMALL_BIG_EXT:
+    case ERL_LARGE_BIG_EXT:
+	if (ei_decode_big(buf, index, NULL) < 0) return -1;
+	break;
+    case ERL_FLOAT_EXT:
+	if (ei_decode_double(buf, index, NULL) < 0) return -1;
+	break;
+    case ERL_FUN_EXT:
+	if (ei_decode_fun(buf, index, NULL) < 0) return -1;
+	break;
+    default:
+	return -1;
+    }
+    return 0;
+}
+