public ObservableReversableBinaryExpression(BinaryExpression node, ObservableExpressionBinder binder, MethodInfo leftReverser, MethodInfo rightReverser)
: this(
binder.VisitObservable <TLeft>(node.Left),
binder.VisitObservable <TRight>(node.Right),
ReflectionHelper.CreateDelegate <Func <TLeft, TRight, TResult> >(node.Method),
rightReverser != null ? ReflectionHelper.CreateDelegate <Func <TResult, TRight, TLeft> >(rightReverser) : null,
leftReverser != null ? ReflectionHelper.CreateDelegate <Func <TResult, TLeft, TRight> >(leftReverser) : null)
{
}
/// <summary>
/// Creates an incremental expression for the given code expression
/// </summary>
/// <typeparam name="T">The type of the expression</typeparam>
/// <param name="expression">The expression from which to create an incremental expression</param>
/// <param name="parameterMappings">A given mapping of parameters</param>
/// <param name="parameters">The parameters of the expression</param>
/// <returns>An incremental expression object</returns>
public INotifyReversableExpression <T> CreateReversableExpression <T>(Expression expression, IEnumerable <ParameterExpression> parameters, IDictionary <string, object> parameterMappings)
{
if (expression == null)
{
throw new ArgumentNullException("expression");
}
INotifyReversableExpression <T> exp;
if (parameterMappings == null)
{
binder.Compress = parameters == null;
exp = binder.VisitObservable <T>(expression, false) as INotifyReversableExpression <T>;
}
else
{
var newBinder = new ObservableExpressionBinder(parameters == null, parameterMappings);
exp = newBinder.VisitObservable <T>(expression, false) as INotifyReversableExpression <T>;
}
if (exp == null)
{
throw new InvalidOperationException("The given expression could not be reversed!");
}
return(exp);
}
/// <summary>
/// Creates an incremental expression for the given code expression
/// </summary>
/// <typeparam name="T">The type of the expression</typeparam>
/// <param name="expression">The expression from which to create an incremental expression</param>
/// <param name="parameterMappings">A given mapping of parameters</param>
/// <param name="parameters">The parameters of the expression</param>
/// <returns>An incremental expression object</returns>
public INotifyExpression <T> CreateExpression <T>(Expression expression, IEnumerable <ParameterExpression> parameters, IDictionary <string, object> parameterMappings)
{
if (expression == null)
{
throw new ArgumentNullException("expression");
}
if (parameterMappings == null)
{
binder.Compress = parameters == null;
return(binder.VisitObservable <T>(expression, false));
}
else
{
var newBinder = new ObservableExpressionBinder(parameters == null, parameterMappings);
return(newBinder.VisitObservable <T>(expression, false));
}
}
private static ObservableMemberBinding <T> CreateProperty <T, TMember>(MemberAssignment node, ObservableExpressionBinder binder, INotifyExpression <T> target)
{
INotifyExpression <TMember> value = binder.VisitObservable <TMember>(node.Expression);
var property = node.Member as PropertyInfo;
var reversable = value as INotifyReversableExpression <TMember>;
if (reversable != null && ReflectionHelper.IsAssignableFrom(typeof(INotifyPropertyChanged), typeof(T)))
{
return(new ObservableReversablePropertyMemberBinding <T, TMember>(target, node.Member.Name,
ReflectionHelper.CreateDelegate(typeof(Func <T, TMember>), ReflectionHelper.GetGetter(property)) as Func <T, TMember>,
ReflectionHelper.CreateDelegate(typeof(Action <T, TMember>), ReflectionHelper.GetSetter(property)) as Action <T, TMember>,
reversable));
}
return(new ObservablePropertyMemberBinding <T, TMember>(target,
ReflectionHelper.CreateDelegate(typeof(Action <T, TMember>), ReflectionHelper.GetSetter(property)) as Action <T, TMember>, value));
}
public ObservableListInit(ListInitExpression expression, ObservableExpressionBinder binder)
: this(expression, binder, binder.VisitObservable <T>(expression.NewExpression))
{
}
public ObservableCoalesceExpression(BinaryExpression expression, ObservableExpressionBinder binder)
: this(binder.VisitObservable <T>(expression.Left), binder.VisitObservable <T>(expression.Right))
{
}
public ObservableBinaryExpression(BinaryExpression node, ObservableExpressionBinder binder)
: this(binder.VisitObservable <TLeft>(node.Left), binder.VisitObservable <TRight>(node.Right), ReflectionHelper.CreateDelegate <Func <TLeft, TRight, TResult> >(node.Method))
{
}
public ObservableConditionalExpression(ConditionalExpression expression, ObservableExpressionBinder binder)
: this(binder.VisitObservable <bool>(expression.Test), binder.VisitObservable <T>(expression.IfTrue), binder.VisitObservable <T>(expression.IfFalse))
{
}
public ObservableTypeAs(UnaryExpression node, ObservableExpressionBinder binder)
: base(binder.VisitObservable <TInner>(node.Operand))
{
}
public ObservableReversableMemberExpression(MemberExpression expression, ObservableExpressionBinder binder, string name, FieldInfo field)
: this(binder.VisitObservable <TTarget>(expression.Expression, true), name, ReflectionHelper.CreateDynamicFieldGetter <TTarget, TMember>(field), ReflectionHelper.CreateDynamicFieldSetter <TTarget, TMember>(field))
{
}
public ObservableLongArrayIndex(BinaryExpression node, ObservableExpressionBinder binder)
: this(binder.VisitObservable <T[]>(node.Left), binder.VisitObservable <long>(node.Right))
{
}
public ObservablePropertyMemberBinding(MemberAssignment node, ObservableExpressionBinder binder, INotifyExpression <T> target, Action <T, TMember> member)
: this(target, member, binder.VisitObservable <TMember>(node.Expression))
{
}
public ObservablePropertyMemberBinding(MemberAssignment node, ObservableExpressionBinder binder, INotifyExpression <T> target, FieldInfo field)
: this(target, ReflectionHelper.CreateDynamicFieldSetter <T, TMember>(field), binder.VisitObservable <TMember>(node.Expression))
{
}
public ObservableArrayInitializationExpression(NewArrayExpression node, ObservableExpressionBinder binder)
: this(node.Expressions.Select(e => binder.VisitObservable <T>(e)))
{
}
public ObservableMemberExpression(MemberExpression expression, ObservableExpressionBinder binder, string name, Func <TTarget, TMember> getter)
: this(binder.VisitObservable <TTarget>(expression.Expression, true), name, getter)
{
}
public ObservableListInitializer(ElementInit expression, ObservableExpressionBinder binder, INotifyExpression <T> target)
: this(target, binder.VisitObservable <TElement>(expression.Arguments[0]), expression.AddMethod)
{
}
public ObservableNewExpression(NewExpression node, ObservableExpressionBinder binder)
: base(CreateDelegate(node), binder.VisitObservable <T1>(node.Arguments[0]))
{
}
public ObservableUnaryExpression(UnaryExpression node, ObservableExpressionBinder binder)
: this(binder.VisitObservable <TInner>(node.Operand), ReflectionHelper.CreateDelegate <Func <TInner, TOuter> >(node.Method))
{
}