76 lines
2.3 KiB
Go
76 lines
2.3 KiB
Go
package schema
|
|
|
|
// Type is an interface that all types in the schema implement.
|
|
// Currently, these are ObjectType and EnumType.
|
|
type Type interface {
|
|
// TypeName returns the type's name.
|
|
TypeName() string
|
|
|
|
// Validate validates the type.
|
|
Validate(TypeSet) error
|
|
|
|
// isType is a private method that ensures that only types in this package can be marked as types.
|
|
isType()
|
|
}
|
|
|
|
// TypeSet represents something that has types and allows them to be looked up by name.
|
|
// Currently, the only implementation is ModuleSchema.
|
|
type TypeSet interface {
|
|
// LookupType looks up a type by name.
|
|
LookupType(name string) (t Type, found bool)
|
|
|
|
// LookupEnumType is a convenience method that looks up an EnumType by name.
|
|
LookupEnumType(name string) (t EnumType, found bool)
|
|
|
|
// LookupObjectType is a convenience method that looks up an ObjectType by name.
|
|
LookupObjectType(name string) (t ObjectType, found bool)
|
|
|
|
// AllTypes calls the given function for each type in the type set.
|
|
// This function is compatible with go 1.23 iterators and can be used like this:
|
|
// for t := range types.AllTypes {
|
|
// // do something with t
|
|
// }
|
|
AllTypes(f func(Type) bool)
|
|
|
|
// EnumTypes calls the given function for each EnumType in the type set.
|
|
// This function is compatible with go 1.23 iterators.
|
|
EnumTypes(f func(EnumType) bool)
|
|
|
|
// ObjectTypes calls the given function for each ObjectType in the type set.
|
|
// This function is compatible with go 1.23 iterators.
|
|
ObjectTypes(f func(ObjectType) bool)
|
|
|
|
// isTypeSet is a private method that ensures that only types in this package can be marked as type sets.
|
|
isTypeSet()
|
|
}
|
|
|
|
// EmptyTypeSet is a schema that contains no types.
|
|
// It can be used in Validate methods when there is no schema needed or available.
|
|
func EmptyTypeSet() TypeSet {
|
|
return emptyTypeSetInst
|
|
}
|
|
|
|
var emptyTypeSetInst = emptyTypeSet{}
|
|
|
|
type emptyTypeSet struct{}
|
|
|
|
func (emptyTypeSet) LookupType(string) (Type, bool) {
|
|
return nil, false
|
|
}
|
|
|
|
func (s emptyTypeSet) LookupEnumType(string) (t EnumType, found bool) {
|
|
return EnumType{}, false
|
|
}
|
|
|
|
func (s emptyTypeSet) LookupObjectType(string) (t ObjectType, found bool) {
|
|
return ObjectType{}, false
|
|
}
|
|
|
|
func (emptyTypeSet) AllTypes(func(Type) bool) {}
|
|
|
|
func (s emptyTypeSet) EnumTypes(func(EnumType) bool) {}
|
|
|
|
func (s emptyTypeSet) ObjectTypes(func(ObjectType) bool) {}
|
|
|
|
func (emptyTypeSet) isTypeSet() {}
|