#!/usr/bin/python
# -*- coding: utf-8 -*-

"""
Copyright (c) 2014 trgk

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
"""

from .. import rawtrigger as bt
from ..allocator import IsConstExpr
from eudplib import utils as ut
from eudplib.localize import _


class VariableBase:
    def __init__(self):
        pass

    def getValueAddr(self):
        raise NotImplementedError

    # -------

    def AtLeast(self, value):
        return bt.Memory(self.getValueAddr(), bt.AtLeast, value)

    def AtMost(self, value):
        return bt.Memory(self.getValueAddr(), bt.AtMost, value)

    def Exactly(self, value):
        return bt.Memory(self.getValueAddr(), bt.Exactly, value)

    # -------

    def SetNumber(self, value):
        return bt.SetMemory(self.getValueAddr(), bt.SetTo, value)

    def AddNumber(self, value):
        return bt.SetMemory(self.getValueAddr(), bt.Add, value)

    def SubtractNumber(self, value):
        return bt.SetMemory(self.getValueAddr(), bt.Subtract, value)

    # -------

    def AtLeastX(self, value, mask):
        return bt.MemoryX(self.getValueAddr(), bt.AtLeast, value, mask)

    def AtMostX(self, value, mask):
        return bt.MemoryX(self.getValueAddr(), bt.AtMost, value, mask)

    def ExactlyX(self, value, mask):
        return bt.MemoryX(self.getValueAddr(), bt.Exactly, value, mask)

    # -------

    def SetNumberX(self, value, mask):
        return bt.SetMemoryX(self.getValueAddr(), bt.SetTo, value, mask)

    def AddNumberX(self, value, mask):
        return bt.SetMemoryX(self.getValueAddr(), bt.Add, value, mask)

    def SubtractNumberX(self, value, mask):
        return bt.SetMemoryX(self.getValueAddr(), bt.Subtract, value, mask)

    # -------

    def Assign(self, value):
        bt.RawTrigger(actions=bt.SetMemory(self.getValueAddr(), bt.SetTo, value))

    def __lshift__(self, value):
        self.Assign(value)

    def __iadd__(self, value):
        bt.RawTrigger(actions=bt.SetMemory(self.getValueAddr(), bt.Add, value))
        return self

    def __isub__(self, value):
        bt.RawTrigger(actions=bt.SetMemory(self.getValueAddr(), bt.Subtract, value))
        return self

    # -------

    # See: https://github.com/heinermann/llvm-bw/wiki/Instruction-Implementation

    def __ior__(self, value):
        bt.RawTrigger(actions=self.SetNumberX(0xFFFFFFFF, value))
        return self

    def __iand__(self, value):
        bt.RawTrigger(actions=self.SetNumberX(0, ~value))
        return self

    def __ixor__(self, value):
        bt.RawTrigger(
            actions=[
                self.AddNumberX(value, 0x55555555),  # 5 = 0b0101
                self.AddNumberX(value, 0xAAAAAAAA),  # A = 0b1010
            ]
        )
        return self

    def iinvert(self):
        "In-place invert (x << ~x)"
        return self.__ixor__(0xFFFFFFFF)

    def ineg(self):
        "In-place negate (x << -x)"
        bt.RawTrigger(
            actions=[
                self.AddNumberX(0xFFFFFFFF, 0x55555555),
                self.AddNumberX(0xFFFFFFFF, 0xAAAAAAAA),
                self.AddNumber(1),
            ]
        )
        return self

    def __ilshift__(self, n):
        mask = (1 << (n + 1)) - 1
        bt.RawTrigger(
            actions=[
                [
                    self.SetNumberX(0, (mask >> 1) << (n + 1)),
                    self.AddNumberX((mask >> 1) << n, mask << n),
                ]
                for n in reversed(range(32 - n))
            ]
            + [self.SetNumberX(0, mask >> 1)]  # lowest n bits
        )
        return self

    def __irshift__(self, n):
        mask = (1 << (n + 1)) - 1
        bt.RawTrigger(
            actions=[self.SetNumberX(0, mask >> 1)]  # lowest n bits
            + [self.SubtractNumberX((mask >> 1) << n, mask << n) for n in range(32 - n)]
        )
        return self

    # -------

    def __eq__(self, other):
        return self.Exactly(other)

    def __ne__(self, other):
        if isinstance(other, int):
            if other & 0xFFFFFFFF == 0:
                return self.AtLeast(1)
            if other & 0xFFFFFFFF == 0xFFFFFFFF:
                return self.AtMost(0xFFFFFFFE)
        return NotImplemented

    def __le__(self, other):
        return self.AtMost(other)

    def __lt__(self, other):
        if IsConstExpr(other):
            return self.AtMost(other - 1)
        return NotImplemented

    def __ge__(self, other):
        return self.AtLeast(other)

    def __gt__(self, other):
        if IsConstExpr(other):
            return self.AtLeast(other + 1)
        return NotImplemented
