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package cty
import (
"fmt"
)
type typeSet struct {
typeImplSigil
ElementTypeT Type
}
// Set creates a set type with the given element Type.
//
// Set types are CollectionType implementations.
func Set(elem Type) Type {
return Type{
typeSet{
ElementTypeT: elem,
},
}
}
// Equals returns true if the other Type is a set whose element type is
// equal to that of the receiver.
func (t typeSet) Equals(other Type) bool {
ot, isSet := other.typeImpl.(typeSet)
if !isSet {
return false
}
return t.ElementTypeT.Equals(ot.ElementTypeT)
}
func (t typeSet) FriendlyName(mode friendlyTypeNameMode) string {
elemName := t.ElementTypeT.friendlyNameMode(mode)
if mode == friendlyTypeConstraintName {
if t.ElementTypeT == DynamicPseudoType {
elemName = "any single type"
}
}
return "set of " + elemName
}
func (t typeSet) ElementType() Type {
return t.ElementTypeT
}
func (t typeSet) GoString() string {
return fmt.Sprintf("cty.Set(%#v)", t.ElementTypeT)
}
// IsSetType returns true if the given type is a list type, regardless of its
// element type.
func (t Type) IsSetType() bool {
_, ok := t.typeImpl.(typeSet)
return ok
}
// SetElementType is a convenience method that checks if the given type is
// a set type, returning a pointer to its element type if so and nil
// otherwise. This is intended to allow convenient conditional branches,
// like so:
//
// if et := t.SetElementType(); et != nil {
// // Do something with *et
// }
func (t Type) SetElementType() *Type {
if lt, ok := t.typeImpl.(typeSet); ok {
return <.ElementTypeT
}
return nil
}
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