/// <summary>
/// Get <see cref="PropertyInfo"/> of a expression body
/// </summary>
/// <param name="exp">Expression to be checked</param>
/// <typeparam name="T"></typeparam>
/// <typeparam name="TValue"></typeparam>
/// <returns></returns>
public static PropertyInfo GetPropertyInfo <T, TValue>(this Expression <Func <T, TValue> > exp)
{
var visitor = new PropertyExpressionVisitor();
var propertyInfo = visitor.GetExpression(exp);
return(propertyInfo !);
}
public void Should_access_no_level_property()
{
Expression <Func <A, A> > propertyExpression = (A a) => a;
PropertyExpressionVisitor visitor = new PropertyExpressionVisitor <A>(null);
NodeSelector selector = visitor.CreateSelector(propertyExpression.Body);
selector.ConsoleWriteLine();
Assert.IsInstanceOf <TypeNodeSelector <A> >(selector);
Assert.IsNull(selector.Next);
}
public void Should_access_no_level_property()
{
Expression<Func<A, A>> propertyExpression = (A a) => a;
PropertyExpressionVisitor visitor = new PropertyExpressionVisitor<A>(null);
NodeSelector selector = visitor.CreateSelector(propertyExpression.Body);
selector.ConsoleWriteLine();
Assert.IsInstanceOf<TypeNodeSelector<A>>(selector);
Assert.IsNull(selector.Next);
}
public void Should_access_first_level_property()
{
Expression <Func <A, B> > propertyExpression = (A a) => a.TheB;
PropertyExpressionVisitor visitor = new PropertyExpressionVisitor <A>(_configurator);
NodeSelector selector = visitor.CreateSelector(propertyExpression.Body);
selector.ConsoleWriteLine();
Assert.IsInstanceOf <TypeNodeSelector <A> >(selector);
Assert.IsInstanceOf <PropertyNodeSelector <A, B, B> >(selector.Next);
Assert.IsNull(selector.Next.Next);
}
public void Should_access_first_level_property()
{
Expression<Func<A, B>> propertyExpression = (A a) => a.TheB;
PropertyExpressionVisitor visitor = new PropertyExpressionVisitor<A>(_configurator);
NodeSelector selector = visitor.CreateSelector(propertyExpression.Body);
selector.ConsoleWriteLine();
Assert.IsInstanceOf<TypeNodeSelector<A>>(selector);
Assert.IsInstanceOf<PropertyNodeSelector<A, B,B>>(selector.Next);
Assert.IsNull(selector.Next.Next);
}
public void Should_get_list_getters()
{
Expression <Func <A, double> > propertyExpression = (A a) => a.Amounts[1];
var visitor = new PropertyExpressionVisitor <A>(null);
NodeSelector selector = visitor.CreateSelector(propertyExpression.Body);
selector.ConsoleWriteLine();
Assert.IsInstanceOf <TypeNodeSelector <A> >(selector);
Assert.IsInstanceOf <PropertyNodeSelector <A, IList <double> > >(selector.Next);
Assert.IsInstanceOf <ListNodeSelector <Token <A, IList <double> >, double> >(selector.Next.Next);
Assert.IsNull(selector.Next.Next.Next);
}
public void Should_access_third_level_property()
{
Expression <Func <A, string> > propertyExpression = (A a) => a.TheB.TheC.Value;
var visitor = new PropertyExpressionVisitor <A>(null);
NodeSelector selector = visitor.CreateSelector(propertyExpression.Body);
selector.ConsoleWriteLine();
Assert.IsInstanceOf <TypeNodeSelector <A> >(selector);
Assert.IsInstanceOf <PropertyNodeSelector <A, B> >(selector.Next);
Assert.IsInstanceOf <PropertyNodeSelector <A, B, C> >(selector.Next.Next);
Assert.IsInstanceOf <PropertyNodeSelector <Token <A, B>, C, string> >(selector.Next.Next.Next);
Assert.IsNull(selector.Next.Next.Next.Next);
}
public void Should_get_indexers()
{
Expression <Func <A, int> > propertyExpression = (A a) => a.TheB.Values[1];
var visitor = new PropertyExpressionVisitor <A>(null);
NodeSelector selector = visitor.CreateSelector(propertyExpression.Body);
selector.ConsoleWriteLine();
Assert.IsInstanceOf <TypeNodeSelector <A> >(selector);
Assert.IsInstanceOf <PropertyNodeSelector <A, B> >(selector.Next);
Assert.IsInstanceOf <PropertyNodeSelector <A, B, int[]> >(selector.Next.Next);
Assert.IsInstanceOf <ArrayNodeSelector <Token <Token <A, B>, int[]>, int> >(selector.Next.Next.Next);
Assert.IsNull(selector.Next.Next.Next.Next);
}
public void Should_access_fourth_level_property()
{
Expression <Func <A, int> > propertyExpression = (A a) => a.TheB.TheC.Value.Length;
var visitor = new PropertyExpressionVisitor <A>(_configurator);
NodeSelector selector = visitor.CreateSelector(propertyExpression.Body);
selector.ConsoleWriteLine();
Assert.IsInstanceOf <TypeNodeSelector <A> >(selector);
Assert.IsInstanceOf <PropertyNodeSelector <A, B, B> >(selector.Next);
Assert.IsInstanceOf <PropertyNodeSelector <A, B, C, C> >(selector.Next.Next);
Assert.IsInstanceOf <PropertyNodeSelector <Token <A, B>, C, string, string> >(selector.Next.Next.Next);
Assert.IsInstanceOf <PropertyNodeSelector <Token <Token <A, B>, C>, string, int, int> >(
selector.Next.Next.Next.Next);
Assert.IsNull(selector.Next.Next.Next.Next.Next);
}
public void Should_access_fourth_level_property()
{
Expression<Func<A, int>> propertyExpression = (A a) => a.TheB.TheC.Value.Length;
var visitor = new PropertyExpressionVisitor<A>(null);
NodeSelector selector = visitor.CreateSelector(propertyExpression.Body);
selector.ConsoleWriteLine();
Assert.IsInstanceOf<TypeNodeSelector<A>>(selector);
Assert.IsInstanceOf<PropertyNodeSelector<A, B>>(selector.Next);
Assert.IsInstanceOf<PropertyNodeSelector<A, B, C>>(selector.Next.Next);
Assert.IsInstanceOf<PropertyNodeSelector<Token<A, B>, C, string>>(selector.Next.Next.Next);
Assert.IsInstanceOf<PropertyNodeSelector<Token<Token<A, B>, C>, string, int>>(
selector.Next.Next.Next.Next);
Assert.IsNull(selector.Next.Next.Next.Next.Next);
}
public void Should_get_list_getters()
{
Expression<Func<A, double>> propertyExpression = (A a) => a.Amounts[1];
var visitor = new PropertyExpressionVisitor<A>(null);
NodeSelector selector = visitor.CreateSelector(propertyExpression.Body);
selector.ConsoleWriteLine();
Assert.IsInstanceOf<TypeNodeSelector<A>>(selector);
Assert.IsInstanceOf<PropertyNodeSelector<A, IList<double>>>(selector.Next);
Assert.IsInstanceOf<ListNodeSelector<Token<A, IList<double>>, double>>(selector.Next.Next);
Assert.IsNull(selector.Next.Next.Next);
}
public void Should_get_indexers()
{
Expression<Func<A, int>> propertyExpression = (A a) => a.TheB.Values[1];
var visitor = new PropertyExpressionVisitor<A>(null);
NodeSelector selector = visitor.CreateSelector(propertyExpression.Body);
selector.ConsoleWriteLine();
Assert.IsInstanceOf<TypeNodeSelector<A>>(selector);
Assert.IsInstanceOf<PropertyNodeSelector<A, B>>(selector.Next);
Assert.IsInstanceOf<PropertyNodeSelector<A, B, int[]>>(selector.Next.Next);
Assert.IsInstanceOf<ArrayNodeSelector<Token<Token<A, B>, int[]>, int>>(selector.Next.Next.Next);
Assert.IsNull(selector.Next.Next.Next.Next);
}
