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/*
* nextpnr -- Next Generation Place and Route
*
* Copyright (C) 2018 Clifford Wolf <clifford@symbioticeda.com>
* Copyright (C) 2018 Serge Bazanski <q3k@symbioticeda.com>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
*/
#ifndef IDSTRING_H
#define IDSTRING_H
#include <string>
#include "nextpnr_namespaces.h"
NEXTPNR_NAMESPACE_BEGIN
struct BaseCtx;
struct IdString
{
int index;
static void initialize_arch(const BaseCtx *ctx);
static void initialize_add(const BaseCtx *ctx, const char *s, int idx);
constexpr IdString() : index(0) {}
explicit constexpr IdString(int index) : index(index) {}
void set(const BaseCtx *ctx, const std::string &s);
IdString(const BaseCtx *ctx, const std::string &s) { set(ctx, s); }
IdString(const BaseCtx *ctx, const char *s) { set(ctx, s); }
const std::string &str(const BaseCtx *ctx) const;
const char *c_str(const BaseCtx *ctx) const;
bool operator<(const IdString &other) const { return index < other.index; }
bool operator==(const IdString &other) const { return index == other.index; }
bool operator!=(const IdString &other) const { return index != other.index; }
bool empty() const { return index == 0; }
unsigned int hash() const { return index; }
};
NEXTPNR_NAMESPACE_END
namespace std {
template <> struct hash<NEXTPNR_NAMESPACE_PREFIX IdString>
{
std::size_t operator()(const NEXTPNR_NAMESPACE_PREFIX IdString &obj) const noexcept
{
return std::hash<int>()(obj.index);
}
};
} // namespace std
#endif /* IDSTRING_H */
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