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.addInstanceCreationExpression((InstanceCreationExpression node) {
    final String typeName = node.constructorName.type.name.lexeme;
    if (!_interactiveWidgets.contains(typeName)) return;

    // Check for explicit small size constraints
    double? width;
    double? height;

    for (final Expression arg in node.argumentList.arguments) {
      if (arg is! NamedExpression) continue;

      final String paramName = arg.name.label.name;
      final Expression value = arg.expression;

      if (paramName == 'width' && value is DoubleLiteral) {
        width = value.value;
      } else if (paramName == 'height' && value is DoubleLiteral) {
        height = value.value;
      } else if (paramName == 'width' && value is IntegerLiteral) {
        width = value.value?.toDouble();
      } else if (paramName == 'height' && value is IntegerLiteral) {
        height = value.value?.toDouble();
      } else if (paramName == 'iconSize' && value is DoubleLiteral) {
        // IconButton uses iconSize
        if (value.value < _minTouchSize) {
          reporter.atNode(arg);
        }
      } else if (paramName == 'iconSize' && value is IntegerLiteral) {
        if ((value.value ?? 0) < _minTouchSize) {
          reporter.atNode(arg);
        }
      } else if (paramName == 'constraints') {
        // Check BoxConstraints
        _checkBoxConstraints(arg.expression, reporter);
      }
    }

    // Report if explicit dimensions are too small
    if (width != null && width < _minTouchSize) {
      reporter.atNode(node);
    } else if (height != null && height < _minTouchSize) {
      reporter.atNode(node);
    }
  });
}