/*
 *  nextpnr -- Next Generation Place and Route
 *
 *  Copyright (C) 2018  David Shah <david@symbioticeda.com>
 *  Copyright (C) 2018  Clifford Wolf <clifford@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 NEXTPNR_H
#error Include "archdefs.h" via "nextpnr.h" only.
#endif

#include <boost/functional/hash_fwd.hpp>

NEXTPNR_NAMESPACE_BEGIN

typedef int delay_t;

struct DelayInfo
{
    delay_t delay = 0;

    delay_t raiseDelay() const { return delay; }
    delay_t fallDelay() const { return delay; }
    delay_t avgDelay() const { return delay; }

    DelayInfo operator+(const DelayInfo &other) const
    {
        DelayInfo ret;
        ret.delay = this->delay + other.delay;
        return ret;
    }
};

// -----------------------------------------------------------------------

enum BelType : int32_t
{
    TYPE_NONE,
    TYPE_TRELLIS_SLICE,
    TYPE_TRELLIS_IO
};

enum PortPin : int32_t
{
    PIN_NONE,
#define X(t) PIN_##t,
#include "portpins.inc"
#undef X
    PIN_MAXIDX
};

NPNR_PACKED_STRUCT(struct LocationPOD { int16_t x, y; });

struct Location
{
    int16_t x = -1, y = -1;
    Location() : x(-1), y(-1){};
    Location(int16_t x, int16_t y) : x(x), y(y){};
    Location(const LocationPOD &pod) : x(pod.x), y(pod.y){};
    Location(const Location &loc) : x(loc.x), y(loc.y){};

    bool operator==(const Location &other) const { return x == other.x && y == other.y; }
    bool operator!=(const Location &other) const { return x != other.x || y != other.y; }
};

inline Location operator+(const Location &a, const Location &b) { return Location(a.x + b.x, a.y + b.y); }

struct BelId
{
    Location location;
    int32_t index = -1;

    bool operator==(const BelId &other) const { return index == other.index && location == other.location; }
    bool operator!=(const BelId &other) const { return index != other.index || location != other.location; }
};

struct WireId
{
    Location location;
    int32_t index = -1;

    bool operator==(const WireId &other) const { return index == other.index && location == other.location; }
    bool operator!=(const WireId &other) const { return index != other.index || location != other.location; }
};

struct PipId
{
    Location location;
    int32_t index = -1;

    bool operator==(const PipId &other) const { return index == other.index && location == other.location; }
    bool operator!=(const PipId &other) const { return index != other.index || location != other.location; }
};

struct DecalId
{
    char type = 0; // Bel/Wire/Pip/Frame (b/w/p/f)
    Location location;
    uint32_t z = 0;
};

NEXTPNR_NAMESPACE_END

namespace std {
template <> struct hash<NEXTPNR_NAMESPACE_PREFIX Location>
{
    std::size_t operator()(const NEXTPNR_NAMESPACE_PREFIX Location &loc) const noexcept
    {
        std::size_t seed = std::hash<int>()(loc.x);
        seed ^= std::hash<int>()(loc.y) + 0x9e3779b9 + (seed << 6) + (seed >> 2);
        return seed;
    }
};

template <> struct hash<NEXTPNR_NAMESPACE_PREFIX BelId>
{
    std::size_t operator()(const NEXTPNR_NAMESPACE_PREFIX BelId &bel) const noexcept
    {
        std::size_t seed = std::hash<NEXTPNR_NAMESPACE_PREFIX Location>()(bel.location);
        seed ^= std::hash<int>()(bel.index) + 0x9e3779b9 + (seed << 6) + (seed >> 2);
        return seed;
    }
};

template <> struct hash<NEXTPNR_NAMESPACE_PREFIX WireId>
{
    std::size_t operator()(const NEXTPNR_NAMESPACE_PREFIX WireId &wire) const noexcept
    {
        std::size_t seed = std::hash<NEXTPNR_NAMESPACE_PREFIX Location>()(wire.location);
        seed ^= std::hash<int>()(wire.index) + 0x9e3779b9 + (seed << 6) + (seed >> 2);
        return seed;
    }
};

template <> struct hash<NEXTPNR_NAMESPACE_PREFIX PipId>
{
    std::size_t operator()(const NEXTPNR_NAMESPACE_PREFIX PipId &pip) const noexcept
    {
        std::size_t seed = std::hash<NEXTPNR_NAMESPACE_PREFIX Location>()(pip.location);
        seed ^= std::hash<int>()(pip.index) + 0x9e3779b9 + (seed << 6) + (seed >> 2);
        return seed;
    }
};

template <> struct hash<NEXTPNR_NAMESPACE_PREFIX DecalId>
{
    std::size_t operator()(const NEXTPNR_NAMESPACE_PREFIX DecalId &decal) const noexcept
    {
        std::size_t seed = 0;
        boost::hash_combine(seed, hash<int>()(decal.type));
        boost::hash_combine(seed, hash<NEXTPNR_NAMESPACE_PREFIX Location>()(decal.location));
        boost::hash_combine(seed, hash<int>()(decal.z));
        return seed;
    }
};

template <> struct hash<NEXTPNR_NAMESPACE_PREFIX BelType> : hash<int>
{
};

template <> struct hash<NEXTPNR_NAMESPACE_PREFIX PortPin> : hash<int>
{
};
} // namespace std