operator == method

@override bool operator ==(Object other)

Structural (value) equality over the whole Δ-state: same blocks keyed by start dot, each with equal placement (parent, side), run values, and tombstone set. Two replicas that have converged compare equal, so join is a value-idempotent semilattice op and Mutator.hasPendingDelta / CrdtMap<K, Fugue> behave consistently with the HLC-based types (which all define value equality). Block insertion order is irrelevant.

Implementation

@override
bool operator ==(Object other) {
  if (other is! Fugue<T>) return false;
  if (_blocks.length != other._blocks.length) return false;
  for (final entry in _blocks.entries) {
    final mine = entry.value;
    final theirs = other._blocks[entry.key];
    if (theirs == null) return false;
    if (mine.parent != theirs.parent ||
        mine.side != theirs.side ||
        mine.length != theirs.length) {
      return false;
    }
    for (var i = 0; i < mine.length; i++) {
      if (mine.values[i] != theirs.values[i]) return false;
    }
    if (mine.deleted.length != theirs.deleted.length ||
        !mine.deleted.containsAll(theirs.deleted)) {
      return false;
    }
  }
  return true;
}