99 lines
2.6 KiB
C++
99 lines
2.6 KiB
C++
#ifndef IVL_vsignal_H
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#define IVL_vsignal_H
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/*
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* Copyright (c) 2011-2014 Stephen Williams (steve@icarus.com)
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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 "StringHeap.h"
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# include "LineInfo.h"
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# include "vtype.h"
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class Architecture;
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class Entity;
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class Expression;
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class SigVarBase : public LineInfo {
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public:
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SigVarBase(perm_string name, const VType*type, Expression*init_expr);
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virtual ~SigVarBase();
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const VType* peek_type(void) const { return type_; }
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// Call this method for each occasion where this signal is the
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// l-value of a sequential assignment.
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void count_ref_sequ();
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void dump(ostream&out, int indent = 0) const;
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// Elaborates initializer expressions if needed.
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void elaborate_init_expr(Entity*ent, Architecture*arc);
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protected:
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perm_string peek_name_() const { return name_; }
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unsigned peek_refcnt_sequ_() const { return refcnt_sequ_; }
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void type_elaborate_(VType::decl_t&decl);
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Expression* peek_init_expr() const { return init_expr_; }
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private:
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perm_string name_;
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const VType*type_;
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Expression*init_expr_;
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unsigned refcnt_sequ_;
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private: // Not implemented
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SigVarBase(const SigVarBase&);
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SigVarBase& operator = (const SigVarBase&);
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};
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class Signal : public SigVarBase {
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public:
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Signal(perm_string name, const VType*type, Expression*init_expr);
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int emit(ostream&out, Entity*ent, Architecture*arc);
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};
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class Variable : public SigVarBase {
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public:
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Variable(perm_string name, const VType*type);
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int emit(ostream&out, Entity*ent, Architecture*arc);
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};
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inline void SigVarBase::count_ref_sequ()
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{
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refcnt_sequ_ += 1;
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}
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inline Signal::Signal(perm_string name, const VType*type, Expression*init_expr)
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: SigVarBase(name, type, init_expr)
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{
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}
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inline Variable::Variable(perm_string name, const VType*type)
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: SigVarBase(name, type, 0)
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{
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}
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#endif /* IVL_vsignal_H */
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