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/*
* Copyright (c) 2006,2009 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
# include "PGenerate.h"
# include "PWire.h"
# include "ivl_assert.h"
PGenerate::PGenerate(unsigned id)
: id_number(id)
{
direct_nested_ = false;
parent = 0;
lexical_scope = 0;
}
PGenerate::~PGenerate()
{
}
void PGenerate::add_gate(PGate*gate)
{
gates.push_back(gate);
}
void PGenerate::probe_for_direct_nesting_(void)
{
direct_nested_ = false;
ivl_assert(*this, scheme_type==GS_CASE_ITEM || scheme_type==GS_CONDIT || scheme_type==GS_ELSE);
// If this scheme has received an explicit name, then it
// cannot be direct nested.
if (scope_name[0] != '$') return;
if (tasks.size() > 0) return;
if (funcs.size() > 0) return;
if (gates.size() > 0) return;
if (parameters.size() > 0) return;
if (localparams.size() > 0) return;
if (events.size() > 0) return;
if (wires.size() > 0) return;
if (genvars.size() > 0) return;
if (behaviors.size() > 0) return;
if (analog_behaviors.size() > 0) return;
if (generate_schemes.size() == 0) return;
switch (generate_schemes.size()) {
case 1: {
PGenerate*child = generate_schemes.front();
if (child->scheme_type == GS_CONDIT)
direct_nested_ = true;
if (child->scheme_type == GS_CASE)
direct_nested_ = true;
break;
}
case 2: {
PGenerate*child1 = generate_schemes.front();
PGenerate*child2 = generate_schemes.back();
if (child1->scheme_type==GS_CONDIT && child2->scheme_type==GS_ELSE)
direct_nested_ = true;
if (child2->scheme_type==GS_CONDIT && child1->scheme_type==GS_ELSE)
direct_nested_ = true;
break;
}
}
}
ostream& operator << (ostream&out, PGenerate::scheme_t type)
{
switch (type) {
case PGenerate::GS_NONE:
out << "GS_NONE";
break;
case PGenerate::GS_LOOP:
out << "GS_LOOP";
break;
case PGenerate::GS_CONDIT:
out << "GS_CONDIT";
break;
case PGenerate::GS_ELSE:
out << "GS_ELSE";
break;
case PGenerate::GS_CASE:
out << "GS_CASE";
break;
case PGenerate::GS_CASE_ITEM:
out << "GS_CASE_ITEM";
break;
case PGenerate::GS_NBLOCK:
out << "GS_NBLOCK";
break;
}
return out;
}
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