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/* Marshalling and unmarshalling.
Copyright (C) 2014-2022 Free Software Foundation, Inc.
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation; either version 3, or (at your option) any later
version.
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>. */
#include <cc1plugin-config.h>
#include <new>
#include <string.h>
#include "marshall.hh"
#include "connection.hh"
#include "rpc.hh"
cc1_plugin::status
cc1_plugin::unmarshall_check (connection *conn, unsigned long long check)
{
unsigned long long r;
if (!unmarshall (conn, &r))
return FAIL;
return check == r ? OK : FAIL;
}
cc1_plugin::status
cc1_plugin::marshall_intlike (connection *conn, unsigned long long val)
{
if (!conn->send ('i'))
return FAIL;
return conn->send (&val, sizeof (val));
}
cc1_plugin::status
cc1_plugin::unmarshall_intlike (connection *conn, unsigned long long *result)
{
if (!conn->require ('i'))
return FAIL;
return conn->get (result, sizeof (*result));
}
cc1_plugin::status
cc1_plugin::marshall (connection *conn, const char *str)
{
if (!conn->send ('s'))
return FAIL;
unsigned long long len = str == NULL ? -1ULL : strlen (str);
if (!conn->send (&len, sizeof (len)))
return FAIL;
if (str == NULL)
return OK;
return conn->send (str, len);
}
cc1_plugin::status
cc1_plugin::unmarshall (connection *conn, char **result)
{
unsigned long long len;
if (!conn->require ('s'))
return FAIL;
if (!conn->get (&len, sizeof (len)))
return FAIL;
if (len == -1ULL)
{
*result = NULL;
return OK;
}
char *str = new (std::nothrow) char[len + 1];
if (str == NULL)
return FAIL;
if (!conn->get (str, len))
{
delete[] str;
return FAIL;
}
str[len] = '\0';
*result = str;
return OK;
}
cc1_plugin::status
cc1_plugin::marshall_array_start (connection *conn, char id,
size_t n_elements)
{
if (!conn->send (id))
return FAIL;
unsigned long long r = n_elements;
if (!conn->send (&r, sizeof (r)))
return FAIL;
return OK;
}
cc1_plugin::status
cc1_plugin::marshall_array_elmts (connection *conn, size_t n_bytes,
void *elements)
{
return conn->send (elements, n_bytes);
}
cc1_plugin::status
cc1_plugin::unmarshall_array_start (connection *conn, char id,
size_t *n_elements)
{
unsigned long long len;
if (!conn->require (id))
return FAIL;
if (!conn->get (&len, sizeof (len)))
return FAIL;
*n_elements = len;
return OK;
}
cc1_plugin::status
cc1_plugin::unmarshall_array_elmts (connection *conn, size_t n_bytes,
void *elements)
{
return conn->get (elements, n_bytes);
}
cc1_plugin::status
cc1_plugin::marshall (connection *conn, const gcc_type_array *a)
{
size_t len;
if (a)
len = a->n_elements;
else
len = (size_t)-1;
if (!marshall_array_start (conn, 'a', len))
return FAIL;
if (!a)
return OK;
return marshall_array_elmts (conn, len * sizeof (a->elements[0]),
a->elements);
}
cc1_plugin::status
cc1_plugin::unmarshall (connection *conn, gcc_type_array **result)
{
size_t len;
if (!unmarshall_array_start (conn, 'a', &len))
return FAIL;
if (len == (size_t)-1)
{
*result = NULL;
return OK;
}
cc1_plugin::unique_ptr<gcc_type_array> gta (new gcc_type_array {});
gta->n_elements = len;
gta->elements = new gcc_type[len];
if (!unmarshall_array_elmts (conn,
len * sizeof (gta->elements[0]),
gta->elements))
return FAIL;
*result = gta.release ();
return OK;
}
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