/// <summary>
/// Constructor for SubTreeToFullTreeAdapter
/// </summary>
/// <param name="subTreeReducer">Instance of subtree reducer that needs to adapt.</param>
public SubTreeToFullTreeAdapter(ISubTreeReducer <TState, TPart> subTreeReducer)
{
_subTreeReducer = subTreeReducer;
var propertySelector = _subTreeReducer.PropertySelector;
var memberExpr = propertySelector.Body as MemberExpression ?? throw new ArgumentException(string.Format(
"Expression '{0}' should be a field.",
propertySelector.ToString()));
MemberInfo memberInfo = memberExpr.Member;
CompileGetterFunction(propertySelector, memberExpr);
CompileSetterFunction(memberInfo);
if (_setter is null)
{
throw new Exception("TState must provide an Immutable constructor, or public property setter");
}
}
/// <summary>
/// Add a reducer that works in part/property (sub-tree) of application's state.
/// </summary>
/// <typeparam name="TPart">Type of property in which sub-tree reducer works.</typeparam>
/// <param name="subTreeReducer">Instance of ISubTreeReducer</param>
/// <returns>ReducerComposer for fluent-api.</returns>
public ReducerComposer <TState> AddSubTreeReducer <TPart>(ISubTreeReducer <TState, TPart> subTreeReducer)
{
var stateReducer = new SubTreeToFullTreeAdapter <TState, TPart>(subTreeReducer);
return(AddStateReducer(stateReducer));
}
public TodoMvcReducer AddSubtreeReducer <TPart>(ISubTreeReducer <Todo, TPart> subTreeReducer)
{
_subReducers.Add(new SubTreeToFullTreeAdapter <Todo, TPart>(subTreeReducer));
return(this);
}
