iverilog/vhdlpp/subprogram.cc

99 lines
2.6 KiB
C++

/*
* Copyright (c) 2013 Stephen Williams (steve@icarus.com)
* Copyright CERN 2013 / 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 "subprogram.h"
# include "entity.h"
# include "vtype.h"
# include "ivl_assert.h"
using namespace std;
Subprogram::Subprogram(perm_string nam, list<InterfacePort*>*ports,
const VType*return_type)
: name_(nam), parent_(0), ports_(ports), return_type_(return_type), statements_(0)
{
}
Subprogram::~Subprogram()
{
}
void Subprogram::set_parent(const ScopeBase*par)
{
ivl_assert(*this, parent_ == 0);
parent_ = par;
}
void Subprogram::set_program_body(list<SequentialStmt*>*stmt)
{
ivl_assert(*this, statements_==0);
statements_ = stmt;
}
bool Subprogram::compare_specification(Subprogram*that) const
{
if (name_ != that->name_)
return false;
if (return_type_==0) {
if (that->return_type_!=0)
return false;
} else {
if (that->return_type_==0)
return false;
if (! return_type_->type_match(that->return_type_))
return false;
}
if (ports_==0) {
if (that->ports_!=0)
return false;
} else {
if (that->ports_==0)
return false;
if (ports_->size() != that->ports_->size())
return false;
}
return true;
}
void Subprogram::write_to_stream(ostream&fd) const
{
fd << " function " << name_ << "(";
if (ports_ && ! ports_->empty()) {
list<InterfacePort*>::const_iterator cur = ports_->begin();
InterfacePort*curp = *cur;
fd << curp->name << " : ";
curp->type->write_to_stream(fd);
for (++cur ; cur != ports_->end() ; ++cur) {
curp = *cur;
fd << "; " << curp->name << " : ";
curp->type->write_to_stream(fd);
}
}
fd << ") return ";
return_type_->write_to_stream(fd);
fd << ";" << endl;
}