/// <summary>
/// Extract values of <see cref="ConstantExpression"/>
/// </summary>
/// <param name="at">The <see cref="LambdaExpression"/> from which to extract <see cref="ConstantExpression.Value"/>'s</param>
/// <returns>Extracted values</returns>
public static object[] Locate(LambdaExpression at)
{
var @this = new ConstantExpressionValuesLocator();
@this.Visit(at);
return(@this.values.ToArray());
}
/// <summary>
/// Creates an <see cref="IInvocationInfo"/> instance from the target <paramref name="expression"/>.
/// </summary>
/// <param name="expression">The <see cref="LambdaExpression"/> from which to create an <see cref="IInvocationInfo"/> instance.</param>
/// <returns><see cref="IInvocationInfo"/>.</returns>
public static IInvocationInfo ToInvocationInfo(this LambdaExpression expression)
{
var simplified = expression.Simplify();
switch (simplified?.Body)
{
case MethodCallExpression methodCallExpresssion:
return(new MethodInvocationInfo(methodCallExpresssion.Method,
ConstantExpressionValuesLocator.Locate(simplified)));
case MemberExpression memberExpression:
return(new MemberInvocationInfo(memberExpression.Member));
}
throw new NotSupportedException($"Expression type ({simplified?.Body.NodeType}) not supported.");
}
