102 lines
2.9 KiB
C++
102 lines
2.9 KiB
C++
/*
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* Copyright (c) 2011 Stephen Williams (steve@icarus.com)
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* Copyright CERN 2014
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* @author Maciej Suminski (maciej.suminski@cern.ch)
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*
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* This source code is free software; you can redistribute it
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* and/or modify it in source code form under the terms of the GNU
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* General Public License as published by the Free Software
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* Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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# include "vsignal.h"
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# include "expression.h"
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# include "vtype.h"
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# include "std_types.h"
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# include <iostream>
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using namespace std;
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SigVarBase::SigVarBase(perm_string nam, const VType*typ, Expression*exp)
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: name_(nam), type_(typ), init_expr_(exp), refcnt_sequ_(0)
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{
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}
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SigVarBase::~SigVarBase()
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{
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}
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void SigVarBase::elaborate(Entity*ent, ScopeBase*scope)
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{
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if(init_expr_)
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init_expr_->elaborate_expr(ent, scope, peek_type());
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type_->elaborate(ent, scope);
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}
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void SigVarBase::type_elaborate_(VType::decl_t&decl)
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{
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decl.type = type_;
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}
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int Signal::emit(ostream&out, Entity*ent, ScopeBase*scope, bool initialize)
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{
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int errors = 0;
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VType::decl_t decl;
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type_elaborate_(decl);
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const VType*type = peek_type();
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if (peek_refcnt_sequ_() > 0
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|| (!type->can_be_packed() && dynamic_cast<const VTypeArray*>(type)))
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decl.reg_flag = true;
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errors += decl.emit(out, peek_name());
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const Expression*init_expr = peek_init_expr();
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if (initialize && init_expr) {
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/* Emit initialization value for wires as a weak assignment */
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if(!decl.reg_flag && !type->type_match(&primitive_REAL))
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out << ";" << endl << "/*init*/ assign (weak1, weak0) " << peek_name();
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out << " = ";
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init_expr->emit(out, ent, scope);
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}
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out << ";" << endl;
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return errors;
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}
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int Variable::emit(ostream&out, Entity*ent, ScopeBase*scope, bool initialize)
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{
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int errors = 0;
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VType::decl_t decl;
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type_elaborate_(decl);
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decl.reg_flag = true;
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errors += decl.emit(out, peek_name());
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const Expression*init_expr = peek_init_expr();
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if (initialize && init_expr) {
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out << " = ";
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init_expr->emit(out, ent, scope);
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}
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out << ";" << endl;
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return errors;
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}
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void Variable::write_to_stream(std::ostream&fd)
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{
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fd << "variable " << peek_name() << " : ";
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peek_type()->write_to_stream(fd);
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fd << ";" << endl;
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}
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