visitMixinDeclaration method

@override void visitMixinDeclaration(SMixinDeclaration node)

Visit a SMixinDeclaration.

Implementation

@override
void visitMixinDeclaration(SMixinDeclaration node) {
  final mixinName = node.name?.name ?? '';
  if (environment.isDefinedLocally(mixinName)) {
    return;
  }
  // Create a placeholder for the mixin with the required positional arguments
  final placeholder = InterpretedClass(
    mixinName, // name
    null, // superclass (null for pure mixins)
    environment, // classDefinitionEnvironment
    <SFieldDeclaration>[], // fieldDeclarations (initially empty)
    // Member tables use FrozenNameMap (perf T6): mutable while wiring, then
    // frozen via klass.freezeMemberTables() at the end of the Pass-2 loop.
    FrozenNameMap<InterpretedFunction>(), // methods
    FrozenNameMap<InterpretedFunction>(), // getters
    FrozenNameMap<InterpretedFunction>(), // setters
    FrozenNameMap<InterpretedFunction>(), // staticMethods
    FrozenNameMap<InterpretedFunction>(), // staticGetters
    FrozenNameMap<InterpretedFunction>(), // staticSetters
    <String, Object?>{}, // staticFields (deferred init — left mutable)
    FrozenNameMap<InterpretedFunction>(), // constructors (empty for mixins)
    FrozenNameMap<InterpretedFunction>(), // operators
    // Named parameters
    isAbstract: false, // Mixins are not abstract
    isMixin: true,
    interfaces: [], // Initially empty
    onClauseTypes: [], // Will be filled in pass 2
    mixins: [], // Initially empty (mixins cannot use 'with')
  );
  environment.define(mixinName, placeholder);
  Logger.debug(
      "[DeclarationVisitor] Defined placeholder for mixin '$mixinName' in env: ${environment.hashCode}");
}