public static Func <dynamic, dynamic> CompileMapExpression(string expression, string method, IEnumerable <KeyValuePair <string, string> > supportLambdas, Func <dynamic, string, dynamic> logger = null, string[] referencesIn = null)
{
try {
if (IsLambda(expression))
{
return(CompileLambda <dynamic, dynamic>(expression, supportLambdas, logger, referencesIn));
}
else if (IsTemplate(expression))
{
return(CompileTemplate(expression));
}
else if (expression.EndsWith(".cs"))
{
var asm = CSharpUtility.CompileAssembly(new string[] { File.ReadAllText($"{System.AppDomain.CurrentDomain.BaseDirectory}{expression}") },
referencesIn?.Select(r => PortableExecutableReference.CreateFromFile(r)).ToArray()
);
var path = Regex.Split(expression, "[.]");
return(RetrieveDelegate <dynamic, dynamic>(asm, path.First(), path.ElementAt(1), method));
}
else if (expression.EndsWith(".dll"))
{
var path = Regex.Split(expression, "[.]");
var asm = Assembly.LoadFrom(expression);
return(RetrieveDelegate <dynamic, dynamic>(asm, path.First(), path.ElementAt(1), method));
}
else
{
return((i) => expression);
}
}
catch (Exception e) {
throw new Exception($"Unable to compile expression: '{expression}' {Environment.NewLine} {e.Message}", e);
}
throw new Exception($"Invalid expression provided: '{expression}'");
}
/// <summary>
/// Complies a string template in the format accepted c# 4.5
///
/// Example:
/// "Full Name: {first} {last}"
///
/// </summary>
/// <param name="templateIn"></param>
/// <returns></returns>
public static Func <dynamic, dynamic> CompileTemplate(string templateIn)
{
var source = $"i => $\"{templateIn.Replace("{", "{i.")}\"";
return(CSharpUtility.CompileLambda <dynamic, dynamic>(source));
}
