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POMono.CSharp: how do I inject a value/entity *into* a script?
 

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  1. POMono.CSharp: how do I inject a value/entity *into* a script?
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    <p>Just came across the latest build of Mono.CSharp and love the promise it offers.</p> <p>Was able to get the following all worked out:</p> <pre><code>namespace XAct.Spikes.Duo { class Program { static void Main(string[] args) { CompilerSettings compilerSettings = new CompilerSettings(); compilerSettings.LoadDefaultReferences = true; Report report = new Report(new Mono.CSharp.ConsoleReportPrinter()); Mono.CSharp.Evaluator e; e= new Evaluator(compilerSettings, report); //IMPORTANT:This has to be put before you include references to any assemblies //our you;ll get a stream of errors: e.Run("using System;"); //IMPORTANT:You have to reference the assemblies your code references... //...including this one: e.Run("using XAct.Spikes.Duo;"); //Go crazy -- although that takes time: //foreach (Assembly assembly in AppDomain.CurrentDomain.GetAssemblies()) //{ // e.ReferenceAssembly(assembly); //} //More appropriate in most cases: e.ReferenceAssembly((typeof(A).Assembly)); //Exception due to no semicolon //e.Run("var a = 1+3"); //Doesn't set anything: //e.Run("a = 1+3;"); //Works: //e.ReferenceAssembly(typeof(A).Assembly); e.Run("var a = 1+3;"); e.Run("A x = new A{Name=\"Joe\"};"); var a = e.Evaluate("a;"); var x = e.Evaluate("x;"); //Not extremely useful: string check = e.GetVars(); //Note that you have to type it: Console.WriteLine(((A) x).Name); e = new Evaluator(compilerSettings, report); var b = e.Evaluate("a;"); } } public class A { public string Name { get; set; } } } </code></pre> <p>And that was fun...can create a variable in the script's scope, and export the value. </p> <p>There's just one last thing to figure out... how can I get a value in (eg, a domain entity that I want to apply a Rule script on), without using a static (am thinking of using this in a web app)?</p> <p>I've seen the use compiled delegates -- but that was for the previous version of Mono.CSharp, and it doesn't seem to work any longer. </p> <p>Anybody have a suggestion on how to do this with the current version?</p> <p>Thanks very much.</p> <p>References: * <a href="https://stackoverflow.com/questions/3788096/injecting-a-variable-into-the-mono-csharp-evaluator-runtime-compiling-a-linq-qu">Injecting a variable into the Mono.CSharp.Evaluator (runtime compiling a LINQ query from string)</a> * <a href="http://naveensrinivasan.com/tag/mono/" rel="nofollow noreferrer">http://naveensrinivasan.com/tag/mono/</a></p>
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