Method createInstance

component/container.go:505–525

createInstance constructs a new instance of a component using its definition.

(ctx context.Context, def *Definition)

// createInstance constructs a new instance of a component using its definition.
func (d *DefaultContainer) createInstance(ctx context.Context, def *Definition) (any, error) {
	constructor := def.Constructor()

	args, err := d.resolveArguments(ctx, constructor.Args())
	if err != nil {
		return nil, err
	}

	var instance any
	instance, err = constructor.Invoke(args...)
	if err != nil {
		return nil, err
	}

	instance, err = d.initialize(ctx, instance)
	if err != nil {
		return nil, err
	}

	return instance, nil
}

// createSingleton constructs a singleton instance and registers it in the container.
// It also handles circular dependency protection via preparation state.