runWithReporter method

@override void runWithReporter(SaropaDiagnosticReporter reporter, SaropaContext context)

Override this method to implement your lint rule.

Use context to register callbacks for AST node types:

context.addMethodInvocation((node) {
  if (condition) {
    reporter.atNode(node);
  }
});

Implementation

@override
void runWithReporter(
  SaropaDiagnosticReporter reporter,
  SaropaContext context,
) {
  context.addClassDeclaration((ClassDeclaration node) {
    // Check if class name ends with State
    final String className = node.nameToken.lexeme;
    if (!className.endsWith('State')) return;

    // Exclude Flutter's State class by checking for extends StatefulWidget
    final ExtendsClause? extendsClause = node.extendsClause;
    if (extendsClause != null) {
      final String superName = extendsClause.superclass.name.lexeme;
      if (superName == 'State') return; // Flutter State, not Bloc state
    }

    // Check for mutable fields
    for (final ClassMember member in node.bodyMembers) {
      if (member is FieldDeclaration && !member.isStatic) {
        final VariableDeclarationList fields = member.fields;
        if (!fields.isFinal && !fields.isConst) {
          reporter.atNode(member);
        }
      }
    }
  });
}