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Implementing Programming Languages Using C# 4.0

, 12 Jul 2012 MIT 110.1K 2.7K 242
An introduction to creating programming language tools using C# 4.0.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

using System.Reflection.Emit;

namespace Diggins.Jigsaw
    public class ILTests
        public static void Test(string s)
            var dm = ILCompiler.Eval(s);
            var r = dm.Invoke(null, new object[] { });


        public static void Tests()
            Test("Int32 f() { ldc_i4_1; ret; }");
            Test("Int32 f() { ldc_i4_2; ldc_i4_3; add; ret; }");
            Test("Int32 f() { ldc_i4 Int32 42; ret; }");
            Test("Int32 f() { ldc_i4 Int32 42; ldc_i4_1; sub; ret; }");
            Test("Int32 f() { var Int32 x; ldc_i4_1; stloc var x; ldloc var x; ret; }");
@"Int32 sum10() { 
    var Int32 x; 
    ldc_i4 Int32 10; 
    stloc var x; 
    var Int32 sum;
    ldc_i4 Int32 0;
    stloc var sum;
    ldloc var x;
    brfalse label end;
    ldloc var x;
    ldloc var sum;
    stloc var sum;
    ldloc var x;
    stloc var x;
    ldloc var sum;

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About the Author

Christopher Diggins
Software Developer Autodesk
Canada Canada
This article was written by Christopher Diggins, a computer science nerd who currently works at Autodesk as an SDK specialist.

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