public static PropertyPath <TValue> Create <TValue>(Expression <Func <TValue> > propertyExpression)
{
var path = PropertyPathVisitor.GetPath(propertyExpression);
var propertyInfos = path.Cast <PropertyInfo>().ToArray();
var parts = new PathProperty[propertyInfos.Length];
PathProperty previous = null;
for (int i = 0; i < propertyInfos.Length; i++)
{
var propertyInfo = propertyInfos[i];
var item = new PathProperty(previous, propertyInfo);
parts[i] = item;
previous = item;
}
var constants = ConstantVisitor.GetConstants(propertyExpression);
if (!constants.Any())
{
throw new ArgumentException("Expression contains no constants", nameof(propertyExpression));
}
//valuePath.Source = source;
var source = constants.Last().Value;
var propertyPath = new PropertyPath(parts);
return(new PropertyPath <TValue>(propertyPath, source));
}
/// <summary>
/// The get path.
/// </summary>
/// <param name="expression">
/// The expression.
/// </param>
/// <typeparam name="T">
/// </typeparam>
/// <returns>
/// The <see cref="MemberExpression[]"/>.
/// </returns>
public static IReadOnlyList <MemberInfo> GetPath <T>(Expression <Func <T> > expression)
{
var visitor = new PropertyPathVisitor(expression);
visitor.Visit(expression);
visitor.path.Reverse();
return(visitor.path);
}
public static PropertyPath <TSource, TValue> Create <TSource, TValue>(Expression <Func <TSource, TValue> > propertyExpression)
{
var path = PropertyPathVisitor.GetPath(propertyExpression);
var propertyInfos = path.Cast <PropertyInfo>().ToArray();
var parts = new PathProperty[propertyInfos.Length];
PathProperty previous = null;
for (int i = 0; i < propertyInfos.Length; i++)
{
var propertyInfo = propertyInfos[i];
var item = new PathProperty(previous, propertyInfo);
parts[i] = item;
previous = item;
}
return(new PropertyPath <TSource, TValue>(new PropertyPath(parts)));
}
