94 lines
3.1 KiB
C++
94 lines
3.1 KiB
C++
#ifndef IVL_netstruct_H
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#define IVL_netstruct_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 "LineInfo.h"
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# include <vector>
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# include "ivl_target.h"
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# include "nettypes.h"
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class Design;
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class netstruct_t : public LineInfo, public ivl_type_s {
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public:
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struct member_t {
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perm_string name;
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ivl_type_t net_type;
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inline ivl_variable_type_t data_type() const
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{ return net_type->base_type(); };
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bool get_signed() const
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{ return net_type->get_signed(); }
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};
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public:
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netstruct_t();
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~netstruct_t();
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// If this is a union (instead of struct) then this flag is
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// set. We handle union and struct together because they are
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// so similar.
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void union_flag(bool);
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bool union_flag(void) const;
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void packed(bool flag);
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bool packed(void) const;
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// When the struct is accessed as a primary it can be signed or unsigned
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void set_signed(bool flag) { signed_ = flag; }
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bool get_signed(void) const { return signed_; }
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// Append a new member to the struct/union. This must be done
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// after the union_flag and packed settings are set. This
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// function does error checking, and the "des" argument is
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// only present so that it can set error flags.
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void append_member(Design*des, const member_t&);
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// Given the name of a member, return a pointer to the member
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// description, and set the off value to be the offset into
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// the packed value where the member begins.
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const struct member_t* packed_member(perm_string name, unsigned long&off) const;
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const std::vector<member_t>& members() const { return members_; }
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// Return the width (in bits) of the packed record, or -1 if
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// the record is not packed.
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long packed_width() const;
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std::vector<netrange_t> slice_dimensions() const;
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// Return the base type of the packed record, or
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// IVL_VT_NO_TYPE if the record is not packed.
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ivl_variable_type_t base_type() const;
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private:
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bool test_compatibility(ivl_type_t that) const;
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bool test_equivalence(ivl_type_t that) const;
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private:
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bool union_;
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bool packed_;
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bool signed_;
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std::vector<member_t>members_;
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};
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inline bool netstruct_t::union_flag(void) const { return union_; }
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inline bool netstruct_t::packed(void) const { return packed_; }
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#endif /* IVL_netstruct_H */
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