// C# Eval Expression

// Doc: https://eval-expression.net/options

​

// @nuget: Z.Expressions.Eval

​

/*

## LastCompiledParameterExpressions

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The LastCompiledParameterExpressions option lets you to get the list of parameter expression that was used in the last compilation. This option is not thread safe, so it should always be used in a new instance of an eval context if your application is multi-threaded.

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In this example, we will compile a basic C# statement with 2 parameters and explore the 2 parameters expression that was used for the compilation.

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See more: https://eval-expression.net/options

*/

​

using System;

using System.Collections.Generic;

using System.Linq.Expressions;

using System.Reflection;

using Z.Expressions;

​

public class Program

{

    public static void Main()

    {

        // Global Context: var lastCompiledParameterExpressions = EvalManager.DefaultContext.LastCompiledParameterExpressions;

        var context = new EvalContext();

        var compiled = context.Compile<Func<int, int, int>>("X + Y", "X", "Y");

        var lastParameterExpressions = context.LastCompiledParameterExpressions;

        foreach(var parameterExpression in lastParameterExpressions)

        {

            Console.WriteLine($"ParameterName: {parameterExpression.Name}; ParameterType: {parameterExpression.Type}");

        }

    }

}