n := n.(*ir.UnaryExpr)
		a := s.expr(n.X)
		return s.newValue1(ssa.OpIData, n.Type(), a)

	case ir.OMAKEFACE:
		n := n.(*ir.BinaryExpr)
		tab := s.expr(n.X)
		data := s.expr(n.Y)
		return s.newValue2(ssa.OpIMake, n.Type(), tab, data)

	case ir.OSLICEHEADER:
		n := n.(*ir.SliceHeaderExpr)
		p := s.expr(n.Ptr)
		l := s.expr(n.Len)
		c := s.expr(n.Cap)

                  ... }  ->  true if the value of label X is not one of \"a\", \"b\",
                  \"c\" \thas(label_name)  -> True if that label is present \t! expr
                  -> negation of expr \texpr && expr  -> Short-circuit and \texpr
                  || expr  -> Short-circuit or \t( expr ) -> parens for grouping \tall()
                  or the empty selector -> matches all endpoints. \n Label names are

pkg go/build/constraint, type AndExpr struct, X Expr
pkg go/build/constraint, type AndExpr struct, Y Expr
pkg go/build/constraint, type Expr interface, Eval(func(string) bool) bool
pkg go/build/constraint, type Expr interface, String() string
pkg go/build/constraint, type Expr interface, unexported methods
pkg go/build/constraint, type NotExpr struct
pkg go/build/constraint, type NotExpr struct, X Expr
pkg go/build/constraint, type OrExpr struct

github.com/hashicorp/go-azure-helpers,v0.0.0-20190129193224-166dfd221bb2,h1:VBRx+yPYUZaobnn5ANBcOUf4hhWpTHSQgftG4TcDkhI=,dd17ed56e4b541cffa69679557074071372ab70682f695d8b61126c9393f92dc
github.com/hashicorp/go-bexpr,v0.1.2,h1:ijMXI4qERbzxbCnkxmfUtwMyjrrk3y+Vt0MxojNCbBs=,ac79086a2900ebf2f5414fe54b5799f24b3ddf953a28299f46831a11b10b1df0

pkg go/token, func IsExported(string) bool
pkg go/token, func IsIdentifier(string) bool
pkg go/token, func IsKeyword(string) bool
pkg go/types, func CheckExpr(*token.FileSet, *Package, token.Pos, ast.Expr, *Info) error
pkg log, func Writer() io.Writer
pkg log/syslog (netbsd-arm64-cgo), const LOG_ALERT = 1
pkg log/syslog (netbsd-arm64-cgo), const LOG_ALERT Priority
pkg log/syslog (netbsd-arm64-cgo), const LOG_AUTH = 32