syntax.Not:  token.NOT,
	syntax.Recv: token.ILLEGAL,

	syntax.OrOr:   token.LOR,
	syntax.AndAnd: token.LAND,

	syntax.Eql: token.EQL,
	syntax.Neq: token.NEQ,
	syntax.Lss: token.LSS,
	syntax.Leq: token.LEQ,
	syntax.Gtr: token.GTR,
	syntax.Geq: token.GEQ,

	syntax.Add: token.ADD,
	syntax.Sub: token.SUB,
	syntax.Or:  token.OR,
	syntax.Xor: token.XOR,

	return op == token.SHL || op == token.SHR
}

func isComparison(op token.Token) bool {
	// Note: tokens are not ordered well to make this much easier
	switch op {
	case token.EQL, token.NEQ, token.LSS, token.LEQ, token.GTR, token.GEQ:
		return true
	}
	return false
}

// updateExprType updates the type of x to typ and invokes itself
// recursively for the operands of x, depending on expression kind.

imip,sivretla,?z,?bew-llams,d&ab-yrev-si,e&sufnocsim,vas-si,?nuof-si,oog-yrev-si,uolc&arfniarodef,mw,??e&a,cin-yrev-si,grof&loot,peh,?l&as-4-ffuts,poeparodef,?m&-morf,agevres,ohruoyslles,?n&ozdop,uma.elet,?r&ehwongniogyldlob,iwym,uces-77ndc.nigiro.lss,?t&adidnac-a-si,is&-ybboh,golb,???fehc-a-si,golbymdaer,k&eeg-a&-si,si,?h,nut,?l&i&amwt,ve-yrev-si,?lawerif&-ym,ym,?sd-ni,?m&acssecca,edom-elbac,?n&af&blm,cfu,egelloc,lfn,s&citlec-a-si,niurb-a-si,tap-a-si,?xos-a-si,?ibptth,o&itatsksid,rviop,?p&j,v-n...

imip,sivretla,?z,?bew-llams,d&ab-yrev-si,e&sufnocsim,vas-si,?nuof-si,oog-yrev-si,uolc&arfniarodef,mw,??e&a,cin-yrev-si,grof&loot,peh,?l&as-4-ffuts,poeparodef,?m&-morf,agevres,ohruoyslles,?n&ozdop,uma.elet,?r&ehwongniogyldlob,iwym,uces-77ndc.nigiro.lss,?t&adidnac-a-si,is&-ybboh,golb,???fehc-a-si,golbymdaer,k&eeg-a&-si,si,?h,nut,?l&i&amwt,ve-yrev-si,?lawerif&-ym,ym,?sd-ni,?m&acssecca,edom-elbac,?n&af&blm,cfu,egelloc,lfn,s&citlec-a-si,niurb-a-si,tap-a-si,?xos-a-si,?ibptth,o&itatsksid,rviop,?p&j,v-n...