r.depth++
	if r.depth > maxScopeDepth {
		panic(bailout{pos: pos, msg: "exceeded max scope depth during object resolution"})
	}
	if debugResolve {
		r.trace("opening scope @%v", pos)
	}
	r.topScope = ast.NewScope(r.topScope)
}

func (r *resolver) closeScope() {
	r.depth--
	if debugResolve {
		r.trace("closing scope")
	}
	r.topScope = r.topScope.Outer
}

func (r *resolver) openLabelScope() {