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/*
* %CopyrightBegin%
*
* Copyright Ericsson AB 2001-2016. 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 <string.h>
#include "eidef.h"
#include "eiext.h"
#include "putget.h"
int ei_encode_fun(char *buf, int *index, const erlang_fun *p)
{
int ix = *index;
switch (p->type) {
case EI_FUN_CLOSURE:
if (p->arity == -1) {
/* ERL_FUN_EXT */
if (buf != NULL) {
char* s = buf + ix;
put8(s, ERL_FUN_EXT);
put32be(s, p->u.closure.n_free_vars);
}
ix += sizeof(char) + 4;
if (ei_encode_pid(buf, &ix, &p->u.closure.pid) < 0)
return -1;
if (ei_encode_atom_as(buf, &ix, p->module, ERLANG_UTF8, ERLANG_UTF8) < 0)
return -1;
if (ei_encode_long(buf, &ix, p->u.closure.index) < 0)
return -1;
if (ei_encode_long(buf, &ix, p->u.closure.uniq) < 0)
return -1;
if (buf != NULL)
memcpy(buf + ix, p->u.closure.free_vars, p->u.closure.free_var_len);
ix += p->u.closure.free_var_len;
} else {
char *size_p;
if (buf != NULL) {
char* s = buf + ix;
put8(s, ERL_NEW_FUN_EXT);
size_p = s;
s += 4;
put8(s, p->arity);
memcpy(s, p->u.closure.md5, sizeof(p->u.closure.md5));
s += sizeof(p->u.closure.md5);
put32be(s, p->u.closure.index);
put32be(s, p->u.closure.n_free_vars);
} else
size_p = NULL;
ix += 1 + 4 + 1 + sizeof(p->u.closure.md5) + 4 + 4;
if (ei_encode_atom_as(buf, &ix, p->module, ERLANG_UTF8, ERLANG_UTF8) < 0)
return -1;
if (ei_encode_long(buf, &ix, p->u.closure.old_index) < 0)
return -1;
if (ei_encode_long(buf, &ix, p->u.closure.uniq) < 0)
return -1;
if (ei_encode_pid(buf, &ix, &p->u.closure.pid) < 0)
return -1;
if (buf != NULL)
memcpy(buf + ix, p->u.closure.free_vars, p->u.closure.free_var_len);
ix += p->u.closure.free_var_len;
if (size_p != NULL) {
int sz = buf + ix - size_p;
put32be(size_p, sz);
}
}
break;
case EI_FUN_EXPORT:
if (buf != NULL) {
char* s = buf + ix;
put8(s, ERL_EXPORT_EXT);
}
ix++;
if (ei_encode_atom_as(buf, &ix, p->module, ERLANG_UTF8, ERLANG_UTF8) < 0)
return -1;
if (ei_encode_atom_as(buf, &ix, p->u.exprt.func, ERLANG_UTF8, ERLANG_UTF8) < 0)
return -1;
if (ei_encode_long(buf, &ix, p->arity) < 0)
return -1;
break;
}
*index = ix;
return 0;
}
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