Fission dotnet 2.0 env (#337)

Adding a new dotnet environment, supporting dotnet core 2.0. Project structure changed. Project.json was abandoned. Project.csproj is now used.
2017-09-21 11:30:15 -07:00
parent dc1ffa859d
commit 7bd3f20ad6
15 changed files with 751 additions and 0 deletions
@@ -0,0 +1,75 @@
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Reflection;
+using System.Runtime.Loader;
+using Microsoft.CodeAnalysis;
+using Microsoft.CodeAnalysis.CSharp;
+using Microsoft.CodeAnalysis.Emit;
+
+namespace Fission.DotNetCore.Compiler
+{
+    //adapted from this article http://www.tugberkugurlu.com/archive/compiling-c-sharp-code-into-memory-and-executing-it-with-roslyn
+    class FissionCompiler
+    {
+        public static Function Compile(string code, out List<string> errors)
+        {
+            errors = new List<string>();
+
+            SyntaxTree syntaxTree = CSharpSyntaxTree.ParseText(code);
+
+            string assemblyName = Path.GetRandomFileName();
+
+            var coreDir = Directory.GetParent(typeof(Enumerable).GetTypeInfo().Assembly.Location);      
+            
+            List<MetadataReference> references = new List<MetadataReference>
+            {
+                MetadataReference.CreateFromFile(coreDir.FullName + Path.DirectorySeparatorChar + "mscorlib.dll"),
+                MetadataReference.CreateFromFile(typeof(object).GetTypeInfo().Assembly.Location),
+                MetadataReference.CreateFromFile(Assembly.GetEntryAssembly().Location),
+                MetadataReference.CreateFromFile(typeof(System.Runtime.Serialization.Json.DataContractJsonSerializer).GetTypeInfo().Assembly.Location)
+            };
+
+            foreach (var referencedAssembly in Assembly.GetEntryAssembly().GetReferencedAssemblies())
+            {
+                var assembly = Assembly.Load(referencedAssembly);
+                references.Add(MetadataReference.CreateFromFile(assembly.Location));
+            }
+
+            CSharpCompilation compilation = CSharpCompilation.Create(
+                assemblyName,
+                syntaxTrees: new[] { syntaxTree },
+                references: references,
+                options: new CSharpCompilationOptions(
+                    OutputKind.DynamicallyLinkedLibrary,
+                    optimizationLevel: OptimizationLevel.Release));
+
+            using (var ms = new MemoryStream())
+            {
+                EmitResult result = compilation.Emit(ms);
+
+                if (!result.Success)
+                {
+                    IEnumerable<Diagnostic> failures = result.Diagnostics.Where(diagnostic =>
+                        diagnostic.IsWarningAsError ||
+                        diagnostic.Severity == DiagnosticSeverity.Error).ToList();
+
+                    foreach (Diagnostic diagnostic in failures)
+                    {
+                        errors.Add($"{diagnostic.Id}: {diagnostic.GetMessage()}");
+                    }
+                }
+                else
+                {
+                    ms.Seek(0, SeekOrigin.Begin);
+
+                    Assembly assembly = AssemblyLoadContext.Default.LoadFromStream(ms);
+                    var type = assembly.GetType("FissionFunction");
+                    var info = type.GetMember("Execute").First() as MethodInfo;
+                    return new Function(assembly, type, info);
+                }
+            }
+            return null;
+        }
+    }
+}