instr

Documentation

Index

• Constants
• Variables
• type Instr
  • func Call(argc int) Instr
  • func Concat(argc int) Instr
  • func ConstRef(cvIndex int) Instr
  • func Discard(n int) Instr
  • func List(argc int) Instr
  • func StackRef(stIndex int) Instr
  • func StackSet(stIndex int) Instr
  • func VarRef(cvIndex int) Instr
  • func VarSet(cvIndex int) Instr

Constants

const (
	AttrTakeNothing inputMode = iota
	AttrTake1
	AttrTake2
	AttrTake3
	AttrTakeN
	AttrTakeNplus1
	AttrReplaceNth
)

const (
	AttrPushNothing outputMode = iota
	AttrDupNth
	AttrPushTmp
	AttrPushConst
	AttrPushAndDiscard
)

const (
	AttrEnc0 encoding = iota
	AttrEnc1
)

Variables

var (
	Jmp              = []byte("goto")
	JmpNil           = []byte("goto-if-nil")
	JmpNotNil        = []byte("goto-if-not-nil")
	JmpNilElsePop    = []byte("goto-if-nil-else-pop")
	JmpNotNilElsePop = []byte("goto-if-not-nil-else-pop")
	Label            = []byte("label")
)

Jump instruction names.

var (
	Eq    = binOp("eq")
	Equal = binOp("equal")

	NumEq    = binOp("num=")
	NumGt    = binOp("num>")
	NumLt    = binOp("num<")
	NumLte   = binOp("num<=")
	NumGte   = binOp("num>=")
	NumSub   = binOp("sub")
	NumAdd   = binOp("add")
	NumMul   = binOp("mul")
	NumQuo   = binOp("quo")
	NumMin   = binOp("min")
	StrEq    = binOp("str=")
	StrLt    = binOp("str<")
	ArrayRef = binOp("array-ref")

	Cons   = binOp("cons")
	Memq   = binOp("memq")
	Member = binOp("member")

	Concat2 = Concat(2)
)

Binary ops.

var (
	IsStr    = unaryOp("str?")
	IsInt    = unaryOp("int?")
	IsSymbol = unaryOp("symbol?")

	Add1 = unaryOp("add1")
	Sub1 = unaryOp("sub1")

	Not = unaryOp("not")
	Neg = unaryOp("neg")

	Car = unaryOp("car")
	Cdr = unaryOp("cdr")

	Length = unaryOp("length")
)

Unary ops.

var (
	ArraySet = Instr{
		Name:     []byte("array-set"),
		Encoding: AttrEnc0,
		Input:    AttrTake3,
		Output:   AttrPushAndDiscard,
	}

	Return = Instr{
		Name:     []byte("return"),
		Encoding: AttrEnc0,
		Input:    AttrTake1,
	}

	Substr = Instr{
		Name:     []byte("substr"),
		Encoding: AttrEnc0,
		Input:    AttrTake3,
		Output:   AttrPushTmp,
	}
	SetCar = Instr{
		Name:     []byte("setcar"),
		Encoding: AttrEnc0,
		Input:    AttrTake2,
		Output:   AttrPushAndDiscard,
	}
	SetCdr = Instr{
		Name:     []byte("setcdr"),
		Encoding: AttrEnc0,
		Input:    AttrTake2,
		Output:   AttrPushAndDiscard,
	}
)

Other ops without explicit parameter.

Types

type Instr

type Instr struct {
	Name     []byte
	Encoding encoding
	Input    inputMode
	Output   outputMode
	Data     uint16
}

Instr is a single IR instruction.

func Call

func Call(argc int) Instr

func Concat

func Concat(argc int) Instr

func ConstRef

func ConstRef(cvIndex int) Instr

func Discard

func Discard(n int) Instr

func List

func List(argc int) Instr

func StackRef

func StackRef(stIndex int) Instr

func StackSet

func StackSet(stIndex int) Instr

func VarRef

func VarRef(cvIndex int) Instr

func VarSet

func VarSet(cvIndex int) Instr