Function opToString

opcode.go:261–371

(inst uint32)

}

func opToString(inst uint32) string {
	op := opGetOpCode(inst)
	if op > opCodeMax {
		return ""
	}
	prop := &(opProps[op])

	arga := opGetArgA(inst)
	argb := opGetArgB(inst)
	argc := opGetArgC(inst)
	argbx := opGetArgBx(inst)
	argsbx := opGetArgSbx(inst)

	buf := ""
	switch prop.Type {
	case opTypeABC:
		buf = fmt.Sprintf("%s      |  %d, %d, %d", prop.Name, arga, argb, argc)
	case opTypeABx:
		buf = fmt.Sprintf("%s      |  %d, %d", prop.Name, arga, argbx)
	case opTypeASbx:
		buf = fmt.Sprintf("%s      |  %d, %d", prop.Name, arga, argsbx)
	}

	switch op {
	case OP_MOVE:
		buf += fmt.Sprintf("; R(%v) := R(%v)", arga, argb)
	case OP_MOVEN:
		buf += fmt.Sprintf("; R(%v) := R(%v); followed by %v MOVE ops", arga, argb, argc)
	case OP_LOADK:
		buf += fmt.Sprintf("; R(%v) := Kst(%v)", arga, argbx)
	case OP_LOADBOOL:
		buf += fmt.Sprintf("; R(%v) := (Bool)%v; if (%v) pc++", arga, argb, argc)
	case OP_LOADNIL:
		buf += fmt.Sprintf("; R(%v) := ... := R(%v) := nil", arga, argb)
	case OP_GETUPVAL:
		buf += fmt.Sprintf("; R(%v) := UpValue[%v]", arga, argb)
	case OP_GETGLOBAL:
		buf += fmt.Sprintf("; R(%v) := Gbl[Kst(%v)]", arga, argbx)
	case OP_GETTABLE:
		buf += fmt.Sprintf("; R(%v) := R(%v)[RK(%v)]", arga, argb, argc)
	case OP_GETTABLEKS:
		buf += fmt.Sprintf("; R(%v) := R(%v)[RK(%v)] ; RK(%v) is constant string", arga, argb, argc, argc)
	case OP_SETGLOBAL:
		buf += fmt.Sprintf("; Gbl[Kst(%v)] := R(%v)", argbx, arga)
	case OP_SETUPVAL:
		buf += fmt.Sprintf("; UpValue[%v] := R(%v)", argb, arga)
	case OP_SETTABLE:
		buf += fmt.Sprintf("; R(%v)[RK(%v)] := RK(%v)", arga, argb, argc)
	case OP_SETTABLEKS:
		buf += fmt.Sprintf("; R(%v)[RK(%v)] := RK(%v) ; RK(%v) is constant string", arga, argb, argc, argb)
	case OP_NEWTABLE:
		buf += fmt.Sprintf("; R(%v) := {} (size = BC)", arga)
	case OP_SELF:
		buf += fmt.Sprintf("; R(%v+1) := R(%v); R(%v) := R(%v)[RK(%v)]", arga, argb, arga, argb, argc)
	case OP_ADD:
		buf += fmt.Sprintf("; R(%v) := RK(%v) + RK(%v)", arga, argb, argc)
	case OP_SUB:
		buf += fmt.Sprintf("; R(%v) := RK(%v) - RK(%v)", arga, argb, argc)