package vm

type OpCodeType uint32

const (
	OpNoOp OpCodeType = 0x00000000
	OpNop             = OpNoOp

	OpMove = 0x00000100
	OpMov  = OpMove

	OpAdd            = 0x00000200
	OpSubtract       = 0x00000201
	OpSub            = OpSubtract
	OpMultiply       = 0x00000202
	OpMul            = OpMultiply
	OpDivideUnsigned = 0x00000203
	OpDivU           = OpDivideUnsigned
	OpDivideSigned   = 0x00000204
	OpDivS           = OpDivideSigned

	OpNot = 0x00000300
	OpAnd = 0x00000301
	OpOr  = 0x00000302
	OpXor = 0x00000303

	OpShiftRight = 0x00000400
	OpShR        = OpShiftRight
	OpShiftLeft  = 0x00000401
	OpShL        = OpShiftLeft

	OpIsEqual                      = 0x00000500
	OpEq                           = OpIsEqual
	OpIsLessThanUnsigned           = 0x00000501
	OpLTU                          = OpIsLessThanUnsigned
	OpIsLessThanSigned             = 0x00000502
	OpLTS                          = OpIsLessThanSigned
	OpIsGreaterThanUnsigned        = 0x00000503
	OpGTU                          = OpIsGreaterThanUnsigned
	OpIsGreaterThanSigned          = 0x00000504
	OpGTS                          = OpIsGreaterThanSigned
	OpIsLessThanOrEqualUnsigned    = 0x00000505
	OpLTEU                         = OpIsLessThanOrEqualUnsigned
	OpIsLessThanOrEqualSigned      = 0x00000506
	OpLTES                         = OpIsLessThanOrEqualSigned
	OpIsGreaterThanOrEqualUnsigned = 0x00000507
	OpGTEU                         = OpIsGreaterThanOrEqualUnsigned
	OpIsGreaterThanOrEqualSigned   = 0x00000508
	OpGTES                         = OpIsGreaterThanOrEqualSigned

	OpJump        = 0x00000600
	OpJmp         = OpJump
	OpJumpIfTrue  = 0x00000601
	OpJmpT        = OpJumpIfTrue
	OpJumpIfFalse = 0x00000602
	OpJmpF        = OpJumpIfFalse

	OpCall        = 0x00000700
	OpCal         = OpCall
	OpCallIfTrue  = 0x00000701
	OpCalT        = OpCallIfTrue
	OpCallIfFalse = 0x00000702
	OpCalF        = OpCallIfFalse

	OpReturn        = 0x00000800
	OpRet           = OpReturn
	OpReturnIfTrue  = 0x00000801
	OpRetT          = OpReturnIfTrue
	OpReturnIfFalse = 0x00000802
	OpRetF          = OpReturnIfFalse

	OpSquareRoot = 0x00000900
	OpSqRt       = OpSquareRoot
	OpSqrt       = OpSquareRoot
)

type OperandNumericType int

const (
	OperandUnsigned         OperandNumericType = 0
	OperandSigned                              = 1
	OperandSignedOrUnsigned                    = 2
	OperandReference                           = 3
)

var OperandsByOpCode = map[OpCodeType][]OperandNumericType{
	OpNop: []OperandNumericType{},

	OpMov:  []OperandNumericType{OperandReference, OperandSignedOrUnsigned},
	OpAdd:  []OperandNumericType{OperandReference, OperandSignedOrUnsigned},
	OpSub:  []OperandNumericType{OperandReference, OperandSignedOrUnsigned},
	OpMul:  []OperandNumericType{OperandReference, OperandSignedOrUnsigned},
	OpDivU: []OperandNumericType{OperandReference, OperandUnsigned},
	OpDivS: []OperandNumericType{OperandReference, OperandSigned},

	OpNot: []OperandNumericType{OperandReference},
	OpAnd: []OperandNumericType{OperandReference, OperandUnsigned},
	OpOr:  []OperandNumericType{OperandReference, OperandUnsigned},
	OpXor: []OperandNumericType{OperandReference, OperandUnsigned},

	OpShR: []OperandNumericType{OperandReference, OperandUnsigned},
	OpShL: []OperandNumericType{OperandReference, OperandUnsigned},

	OpEq:   []OperandNumericType{OperandSignedOrUnsigned, OperandSignedOrUnsigned},
	OpLTU:  []OperandNumericType{OperandUnsigned, OperandUnsigned},
	OpLTS:  []OperandNumericType{OperandSigned, OperandSigned},
	OpGTU:  []OperandNumericType{OperandUnsigned, OperandUnsigned},
	OpGTS:  []OperandNumericType{OperandSigned, OperandSigned},
	OpLTEU: []OperandNumericType{OperandUnsigned, OperandUnsigned},
	OpLTES: []OperandNumericType{OperandSigned, OperandSigned},
	OpGTEU: []OperandNumericType{OperandUnsigned, OperandUnsigned},
	OpGTES: []OperandNumericType{OperandSigned, OperandSigned},

	OpJmp:  []OperandNumericType{OperandSigned},
	OpJmpT: []OperandNumericType{OperandSigned},
	OpJmpF: []OperandNumericType{OperandSigned},

	OpCal:  []OperandNumericType{OperandSigned},
	OpCalT: []OperandNumericType{OperandSigned},
	OpCalF: []OperandNumericType{OperandSigned},

	OpRet:  []OperandNumericType{},
	OpRetT: []OperandNumericType{},
	OpRetF: []OperandNumericType{},

	OpSqrt: []OperandNumericType{OperandReference},
}