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/*
* Copyright (c) 2011-2014 Stephen Williams (steve@icarus.com)
*
* This source code is free software; you can redistribute it
* and/or modify it in source code form under the terms of the GNU
* General Public License as published by the Free Software
* Foundation; either version 2 of the License, or (at your option)
* any later version.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
# include "pform.h"
# include "parse_misc.h"
# include "ivl_assert.h"
ivl_variable_type_t struct_type_t::figure_packed_base_type(void) const
{
if (! packed_flag)
return IVL_VT_NO_TYPE;
if (members.get() == 0)
return IVL_VT_NO_TYPE;
ivl_variable_type_t base_type = IVL_VT_BOOL;
ivl_assert(*this, members.get());
for (list<struct_member_t*>::iterator cur = members->begin()
; cur != members->end() ; ++ cur) {
struct_member_t*tmp = *cur;
ivl_variable_type_t tmp_type = IVL_VT_NO_TYPE;
if (tmp->type.get())
tmp_type = tmp->type->figure_packed_base_type();
if (tmp_type == IVL_VT_BOOL) {
continue;
}
if (tmp_type == IVL_VT_LOGIC) {
base_type = IVL_VT_LOGIC;
continue;
}
// Oh no! Member is not a packable type!
return IVL_VT_NO_TYPE;
}
return base_type;
}
/*
* When we parse a packed struct, we can early on (right here) figure
* out the base type of the packed variable. Elaboration, later on,
* well figure out the rest.
*/
static void pform_set_packed_struct(struct_type_t*struct_type, perm_string name, NetNet::Type net_type, list<named_pexpr_t>*attr)
{
ivl_variable_type_t base_type = struct_type->figure_packed_base_type();
PWire*net = pform_get_make_wire_in_scope(name, net_type, NetNet::NOT_A_PORT, base_type);
assert(net);
net->set_data_type(struct_type);
pform_bind_attributes(net->attributes, attr, true);
}
static void pform_set_struct_type(struct_type_t*struct_type, perm_string name, NetNet::Type net_type, list<named_pexpr_t>*attr)
{
if (struct_type->packed_flag) {
pform_set_packed_struct(struct_type, name, net_type, attr);
return;
}
// For now, can only handle packed structs. The parser generates
// a "sorry" message, so no need to do anything here.
}
void pform_set_struct_type(struct_type_t*struct_type, list<perm_string>*names, NetNet::Type net_type, list<named_pexpr_t>*attr)
{
for (list<perm_string>::iterator cur = names->begin()
; cur != names->end() ; ++ cur) {
pform_set_struct_type(struct_type, *cur, net_type, attr);
}
}
static void pform_makewire(const struct vlltype&li,
struct_type_t*struct_type,
NetNet::PortType ptype,
perm_string name,
list<named_pexpr_t>*)
{
ivl_variable_type_t base_type = struct_type->figure_packed_base_type();
PWire*cur = pform_get_make_wire_in_scope(name, NetNet::WIRE, ptype, base_type);
assert(cur);
FILE_NAME(cur, li);
cur->set_data_type(struct_type);
}
void pform_makewire(const struct vlltype&li,
struct_type_t*struct_type,
NetNet::PortType ptype,
list<perm_string>*names,
list<named_pexpr_t>*attr)
{
for (list<perm_string>::iterator cur = names->begin()
; cur != names->end() ; ++ cur ) {
perm_string txt = *cur;
pform_makewire(li, struct_type, ptype, txt, attr);
}
delete names;
}
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