24 pub enum ValueConstraint<T> {
26     Bare(T),
28     Constraint(ResolvedValueConstraint<T>),
31 impl<T> Default for ValueConstraint<T> {
37 impl<T> From<T> for ValueConstraint<T> {
38     fn from(bare: T) -> Self {  in from()
43 impl<T> From<ResolvedValueConstraint<T>> for ValueConstraint<T> {
44     fn from(constraint: ResolvedValueConstraint<T>) -> Self {  in from()
49 impl<T> ValueConstraint<T>
51     T: Clone,
58     ) -> ResolvedValueConstraint<T> {  in to_resolved()  argument
67     ) -> ResolvedValueConstraint<T> {  in into_resolved()  argument
82 impl<T> ValueConstraint<T> {
110 pub struct ResolvedValueConstraint<T> {
118     pub exact: Option<T>,
126     pub ideal: Option<T>,
129 impl<T> ResolvedValueConstraint<T> {
135         Option<T>: From<U>,  in exact()
146         Option<T>: From<U>,  in ideal()
167         T: Clone,  in to_required_only()
182 impl<T> Default for ResolvedValueConstraint<T> {
192 impl<T> std::fmt::Display for ResolvedValueConstraint<T>
194     T: std::fmt::Debug,