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.addAssignmentExpression((AssignmentExpression node) {
    // Only check simple assignments (not +=, etc.)
    if (node.operator.type != TokenType.EQ) return;

    final Expression left = node.leftHandSide;
    final Expression right = node.rightHandSide;

    // Both sides must be simple identifiers
    if (left is! SimpleIdentifier) return;
    if (right is! SimpleIdentifier) return;

    // Check if both sides refer to the same variable
    if (left.name == right.name) {
      reporter.atNode(node);
    }
  });
}