diff options
Diffstat (limited to 'src/go/types/typeparam.go')
| -rw-r--r-- | src/go/types/typeparam.go | 25 |
1 files changed, 11 insertions, 14 deletions
diff --git a/src/go/types/typeparam.go b/src/go/types/typeparam.go index 8cb44ea25e..33a516c209 100644 --- a/src/go/types/typeparam.go +++ b/src/go/types/typeparam.go @@ -74,23 +74,20 @@ func (t *TypeParam) Constraint() Type { return t.bound } -// Bound returns the underlying type of the type parameter's -// constraint. -// Deprecated for external use. Use Constraint instead. -func (t *TypeParam) Bound() *Interface { - if iface, _ := under(t.Constraint()).(*Interface); iface != nil { - return iface +// SetConstraint sets the type constraint for t. +func (t *TypeParam) SetConstraint(bound Type) { + if bound == nil { + panic("types2.TypeParam.SetConstraint: bound must not be nil") } - return &emptyInterface + t.bound = bound } -// TODO(rfindley): document the SetBound methods. - -func (t *TypeParam) SetBound(bound Type) { - if bound == nil { - panic("internal error: bound must not be nil") +// iface returns the constraint interface of t. +func (t *TypeParam) iface() *Interface { + if iface, _ := under(t.Constraint()).(*Interface); iface != nil { + return iface } - t.bound = bound + return &emptyInterface } func (t *TypeParam) Underlying() Type { return t } @@ -135,5 +132,5 @@ func bindTParams(list []*TypeName) *TypeParams { // Implementation func (t *TypeParam) underIs(f func(Type) bool) bool { - return t.Bound().typeSet().underIs(f) + return t.iface().typeSet().underIs(f) } |