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.addInstanceCreationExpression((InstanceCreationExpression node) {
    final String constructorSource = node.constructorName.toSource();
    if (constructorSource != 'Image.network') return;

    // Check for cacheWidth or cacheHeight parameter
    bool hasCacheDimensions = false;
    for (final Expression arg in node.argumentList.arguments) {
      if (arg is NamedExpression) {
        final String name = arg.name.label.name;
        if (name == 'cacheWidth' || name == 'cacheHeight') {
          hasCacheDimensions = true;
          break;
        }
      }
    }

    if (!hasCacheDimensions) {
      reporter.atNode(node.constructorName, code);
    }
  });
}