check method
Implementation
@override
void check(
DcqRegistry registry,
) {
registry.addDeclaredVariablePattern((node) {
if (node.type != null) return;
final parent = node.parent;
if (parent is! GuardedPattern) return;
if (parent.whenClause != null) return;
final grandparent = parent.parent;
if (grandparent is! CaseClause) return;
final greatGrandparent = grandparent.parent;
if (greatGrandparent is! IfStatement) return;
reportAtNode(node);
});
}