Unmodifiable class abstract

A marker interface indicating immutable/unmodifiable cell variants.

This serves as a runtime and compile-time indicator that a cell or collection:

• Blocks mutations: All mutating operations will throw UnsupportedError
• Preserves reactivity: Maintains existing signal propagation
• Enforces safety: Guarantees immutable view of data

Key Characteristics:

• Implemented by all unmodifiable cell variants (collections, values, etc.)
• Checkable via is Unmodifiable at runtime
• Used by TestActionRule to auto-reject mutations

Example Usage:

final baseCell = CollectiveList<int>([1, 2, 3]);
final unmodifiable = baseCell.unmodifiable;

if (unmodifiable is Unmodifiable) {
  print('This cell is immutable');
  unmodifiable.add(4); // Throws UnsupportedError
}

Architecture Notes:

• Works with Cell's modifiable set to block operations
• All mutating methods check this interface first
• Collections return unmodifiable views rather than copies

Implementers

• UnmodifiableCollective
• UnmodifiableCollectiveListAsync
• UnmodifiableCollectiveQueueAsync
• UnmodifiableCollectiveSetAsync
• UnmodifiableCollectiveValueAsync

Constructors

Unmodifiable.new()

Properties

hashCode → int

The hash code for this object.

no setter, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

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