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/*
* %CopyrightBegin%
*
* Copyright Ericsson AB 2002-2016. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions 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_as(buf, index, NULL, MAXATOMLEN_UTF8, (ERLANG_LATIN1|ERLANG_UTF8),
NULL, NULL) < 0) return -1;
break;
case ERL_PID_EXT:
case ERL_NEW_PID_EXT:
if (ei_decode_pid(buf, index, NULL) < 0) return -1;
break;
case ERL_PORT_EXT:
case ERL_NEW_PORT_EXT:
if (ei_decode_port(buf, index, NULL) < 0) return -1;
break;
case ERL_NEW_REFERENCE_EXT:
case ERL_NEWER_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_MAP_EXT:
if (ei_decode_map_header(buf, index, &n) < 0) return -1;
n *= 2;
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:
case NEW_FLOAT_EXT:
if (ei_decode_double(buf, index, NULL) < 0) return -1;
break;
case ERL_FUN_EXT:
case ERL_NEW_FUN_EXT:
if (ei_decode_fun(buf, index, NULL) < 0) return -1;
break;
default:
return -1;
}
return 0;
}
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