Extension class

A single protobuf extension field.

Mirrors the information the descriptor bridge records for an extend field: the extendeeFullName it extends, its number, its protobuf type (e.g. TYPE_STRING, TYPE_MESSAGE), the bracketed fieldKey under which the runtime stores its value in the extendee's backing map, and — for message extensions — the embedded field descriptor.

Constructors

Extension({required String extendeeFullName, required String fieldKey, required int number, required String type, List<Map<String, Object?>>? descriptor})
const

Properties

descriptor → List<Map<String, Object?>>?
For a TYPE_MESSAGE extension, the embedded message's field descriptor list; null for scalar/enum extensions.
final
extendeeFullName → String
Fully-qualified name of the extended message (stripped FQN, no leading dot), e.g. acme.User.
final
fieldKey → String
The extension field's storage key in the extendee's backing map: the bracketed fully-qualified extension name, e.g. [acme.user_email]. This is the exact key the descriptor bridge writes.
final
fullName → String
The fully-qualified extension name without the surrounding brackets, e.g. acme.user_email for a fieldKey of [acme.user_email].
no setter
hashCode → int
The hash code for this object.
no setterinherited
number → int
The extension's field number.
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
type → String
The extension's protobuf type (e.g. TYPE_STRING, TYPE_MESSAGE).
final

Methods

noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
toString() → String
A string representation of this object.
inherited

Operators

operator ==(Object other) → bool
The equality operator.
inherited