mirror of
https://github.com/steveicarus/iverilog.git
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Stephen Williams
d630e4dfe9
We need to elaborate expressions so that function calls in expressions (i.e. ranges) get bound to their proper scope. This binding is in turn used to emit package scopes. This is particularly interesting for ports of entities.
99 lines
2.6 KiB
C++
99 lines
2.6 KiB
C++
/*
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* Copyright (c) 2013 Stephen Williams ([email protected])
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* Copyright CERN 2013 / Stephen Williams ([email protected])
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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 "subprogram.h"
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# include "entity.h"
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# include "vtype.h"
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# include "ivl_assert.h"
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using namespace std;
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Subprogram::Subprogram(perm_string nam, list<InterfacePort*>*ports,
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const VType*return_type)
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: name_(nam), parent_(0), ports_(ports), return_type_(return_type), statements_(0)
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{
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}
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Subprogram::~Subprogram()
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{
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}
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void Subprogram::set_parent(const ScopeBase*par)
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{
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ivl_assert(*this, parent_ == 0);
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parent_ = par;
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}
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void Subprogram::set_program_body(list<SequentialStmt*>*stmt)
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{
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ivl_assert(*this, statements_==0);
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statements_ = stmt;
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}
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bool Subprogram::compare_specification(Subprogram*that) const
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{
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if (name_ != that->name_)
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return false;
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if (return_type_==0) {
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if (that->return_type_!=0)
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return false;
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} else {
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if (that->return_type_==0)
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return false;
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if (! return_type_->type_match(that->return_type_))
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return false;
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}
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if (ports_==0) {
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if (that->ports_!=0)
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return false;
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} else {
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if (that->ports_==0)
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return false;
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if (ports_->size() != that->ports_->size())
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return false;
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}
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return true;
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}
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void Subprogram::write_to_stream(ostream&fd) const
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{
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fd << " function " << name_ << "(";
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if (ports_ && ! ports_->empty()) {
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list<InterfacePort*>::const_iterator cur = ports_->begin();
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InterfacePort*curp = *cur;
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fd << curp->name << " : ";
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curp->type->write_to_stream(fd);
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for (++cur ; cur != ports_->end() ; ++cur) {
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curp = *cur;
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fd << "; " << curp->name << " : ";
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curp->type->write_to_stream(fd);
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}
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}
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fd << ") return ";
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return_type_->write_to_stream(fd);
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fd << ";" << endl;
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}
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