runWithReporter method

  1. @override
void runWithReporter(
  1. SaropaDiagnosticReporter reporter,
  2. SaropaContext context
)
override

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.addBinaryExpression((BinaryExpression node) {
    if (node.operator.type != TokenType.EQ_EQ &&
        node.operator.type != TokenType.BANG_EQ) {
      return;
    }

    final DartType? leftType = node.leftOperand.staticType;
    final DartType? rightType = node.rightOperand.staticType;

    // Allow null checks - comparing collection to null is valid
    if (leftType == null || rightType == null) {
      return;
    }

    // Only report if both sides are collections (actual collection comparison)
    if (_isCollectionType(leftType) && _isCollectionType(rightType)) {
      reporter.atNode(node);
    }
  });
}