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#ifndef IVL_netstruct_H
#define IVL_netstruct_H
/*
* Copyright (c) 2011-2014 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 "LineInfo.h"
# include <vector>
# include "ivl_target.h"
# include "nettypes.h"
class Design;
class netstruct_t : public LineInfo, public ivl_type_s {
public:
struct member_t {
perm_string name;
ivl_type_t net_type;
inline ivl_variable_type_t data_type() const
{ return net_type->base_type(); };
bool get_signed() const
{ return net_type->get_signed(); }
};
public:
netstruct_t();
~netstruct_t();
// If this is a union (instead of struct) then this flag is
// set. We handle union and struct together because they are
// so similar.
void union_flag(bool);
bool union_flag(void) const;
void packed(bool flag);
bool packed(void) const;
// When the struct is accessed as a primary it can be signed or unsigned
void set_signed(bool flag) { signed_ = flag; }
bool get_signed(void) const { return signed_; }
// Append a new member to the struct/union. This must be done
// after the union_flag and packed settings are set. This
// function does error checking, and the "des" argument is
// only present so that it can set error flags.
void append_member(Design*des, const member_t&);
// Given the name of a member, return a pointer to the member
// description, and set the off value to be the offset into
// the packed value where the member begins.
const struct member_t* packed_member(perm_string name, unsigned long&off) const;
// Return the width (in bits) of the packed record, or -1 if
// the record is not packed.
long packed_width() const;
std::vector<netrange_t> slice_dimensions() const;
// Return the base type of the packed record, or
// IVL_VT_NO_TYPE if the record is not packed.
ivl_variable_type_t base_type() const;
private:
bool test_compatibility(ivl_type_t that) const;
bool test_equivalence(ivl_type_t that) const;
private:
bool union_;
bool packed_;
bool signed_;
std::vector<member_t>members_;
};
inline bool netstruct_t::union_flag(void) const { return union_; }
inline bool netstruct_t::packed(void) const { return packed_; }
#endif /* IVL_netstruct_H */
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