MERGE

1 files changed, 268 insertions, 0 deletions

diff --git a/Software/Visual_Studio/Scripting/Tango.Scripting/ScriptingEngine.cs b/Software/Visual_Studio/Scripting/Tango.Scripting/ScriptingEngine.cs
new file mode 100644
index 000000000..b3f5348f8
--- /dev/null
+++ b/Software/Visual_Studio/Scripting/Tango.Scripting/ScriptingEngine.cs
@@ -0,0 +1,268 @@
+using Microsoft.CodeAnalysis;
+using Microsoft.CodeAnalysis.CSharp.Scripting;
+using Microsoft.CodeAnalysis.Scripting;
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Text;
+using System.Threading;
+using System.Threading.Tasks;
+using System.Windows.Forms;
+
+namespace Tango.Scripting
+{
+    public class ScriptingEngine : IScriptingEngine
+    {
+        private class IncludeResult
+        {
+            public String File { get; set; }
+            public List<String> Lines { get; set; }
+        }
+
+        public Task<String> Compile(Script script)
+        {
+            return Task.Factory.StartNew<String>(() =>
+            {
+                String code = script.Code;
+                List<IncludeResult> includeResults = new List<IncludeResult>();
+
+                try
+                {
+                    includeResults.Add(new IncludeResult() { File = script.File, Lines = script.Code.ToLines() });
+                    code = ReplaceIncludes(script, code, script.WorkingFolder, includeResults);
+                }
+                catch (Exception ex)
+                {
+                    throw new CompilationException(new CompilationError() { Message = ex.Message });
+                }
+
+                var options = CreateOptions(script);
+
+                var csharpScript = CSharpScript.Create(code, options: options, globalsType: script.GlobalObject.GetType());
+
+                var results = csharpScript.Compile();
+
+                List<CompilationError> errors = new List<CompilationError>();
+
+                foreach (var result in results.Where(x => x.Severity == DiagnosticSeverity.Error))
+                {
+                    CompilationError error = new CompilationError();
+                    error.Message = result.GetMessage();
+                    error.Character = result.Location.GetMappedLineSpan().StartLinePosition.Character + 1;
+
+                    int lineIndex = 0;
+                    IncludeResult include = null;
+
+                    foreach (var inc in includeResults)
+                    {
+                        for (int i = 0; i < inc.Lines.Count; i++)
+                        {
+                            if (inc.Lines[i] == code.ToLines()[result.Location.GetMappedLineSpan().StartLinePosition.Line])
+                            {
+                                include = inc;
+                                lineIndex = i;
+                                break;
+                            }
+                        }
+                    }
+
+                    if (include != null)
+                    {
+                        error.File = include.File;
+                        error.Line = lineIndex + 1;
+                    }
+
+                    errors.Add(error);
+                }
+
+                if (errors.Count > 0)
+                {
+                    throw new CompilationException(errors.ToArray());
+                }
+
+                return code;
+            });
+        }
+
+        public Task<ScriptSession> Run(Script script)
+        {
+            return Task.Factory.StartNew<ScriptSession>(() =>
+            {
+                var effectivCode = Compile(script).Result;
+
+                var options = CreateOptions(script);
+
+                var _cancaller = new CancellationTokenSource();
+
+                Thread scriptThread = null;
+                ScriptSession session = null;
+
+                session = new ScriptSession(script, effectivCode, () =>
+                {
+                    scriptThread.Abort();
+                });
+
+                scriptThread = new Thread(() =>
+                {
+                    try
+                    {
+                        var result = CSharpScript.RunAsync(effectivCode, options: options, globals: script.GlobalObject, cancellationToken: _cancaller.Token).Result;
+                        session.Completed(result.ReturnValue);
+                    }
+                    catch (ThreadAbortException)
+                    {
+
+                    }
+                    catch (Exception ex)
+                    {
+                        session.Failed(ex.InnerException);
+                    }
+                });
+
+                scriptThread.SetApartmentState(script.ApartmentState);
+                scriptThread.IsBackground = true;
+                scriptThread.Start();
+
+                return session;
+            });
+        }
+
+        public void Dispose()
+        {
+            throw new NotImplementedException();
+        }
+
+        #region Private Methods
+
+        private List<String> GetIncludes(String code, String workingFolder)
+        {
+            if (Directory.Exists(workingFolder))
+            {
+                Environment.CurrentDirectory = workingFolder;
+            }
+
+            List<String> lines = code.ToLines();
+            List<String> includeFiles = new List<string>();
+
+            for (int i = 0; i < lines.Count; i++)
+            {
+                var line = lines[i];
+
+                if (line.Trim().StartsWith("include"))
+                {
+                    String path = line.Replace("include", "").Trim().Replace("\"", "");
+
+                    if (!File.Exists(path))
+                    {
+                        throw new FileNotFoundException("Could not locate include file '" + path + "'.");
+                    }
+
+                    includeFiles.Add(path);
+                }
+            }
+
+            return includeFiles;
+        }
+
+        private String ReplaceIncludes(Script script, String code, String workingFolder, List<IncludeResult> includeResults)
+        {
+            if (Directory.Exists(workingFolder))
+            {
+                Environment.CurrentDirectory = workingFolder;
+            }
+
+            List<String> lines = code.ToLines().ToList();
+
+            for (int i = 0; i < lines.Count; i++)
+            {
+                var line = lines[i];
+
+                if (line.Trim().StartsWith("include"))
+                {
+                    String path = line.Replace("include", "").Trim().Replace("\"", "");
+
+                    if (!File.Exists(path))
+                    {
+                        throw new FileNotFoundException("Could not locate include file '" + path + "'.");
+                    }
+
+                    String includeContent = File.ReadAllText(path);
+
+                    includeResults.Add(new IncludeResult() { File = path, Lines = includeContent.ToLines() });
+
+                    String content = ReplaceIncludes(script, includeContent, Path.GetDirectoryName(path), includeResults);
+
+                    if (!String.IsNullOrWhiteSpace(script.EntryPoint))
+                    {
+                        if (content.Contains(script.EntryPoint + "("))
+                        {
+                            throw new InvalidProgramException(String.Format("Include file '{0}' contains an OnExecute method. Please remove it before trying to compile.", path));
+                        }
+                    }
+
+                    lines[i] = content;
+                }
+            }
+
+            code = ClearUsings(String.Join(Environment.NewLine, lines));
+
+            return code;
+        }
+
+        private String ClearUsings(String code)
+        {
+            List<String> usings = new List<string>();
+
+            List<String> lines = code.ToLines();
+
+            foreach (var line in lines)
+            {
+                if (line.Trim().StartsWith("using"))
+                {
+                    usings.Add(line);
+                }
+            }
+
+            lines.RemoveAll(x => x.Trim().StartsWith("using"));
+
+            return String.Join(Environment.NewLine, usings.Distinct()) + Environment.NewLine + String.Join(Environment.NewLine, lines);
+        }
+
+        private ScriptOptions CreateOptions(Script script)
+        {
+            //My References.
+            var options = ScriptOptions.Default;
+
+            //My Assemblies.
+            options = options.AddReferences(typeof(Form).Assembly.Location);
+            options = options.AddReferences(typeof(Enumerable).Assembly.Location);
+            options = options.AddReferences(typeof(ScriptingEngine).Assembly.Location);
+
+            foreach (var asm in script.ReferenceAssemblies)
+            {
+                options = options.AddReferences(asm.File);
+            }
+
+            //Imports.
+            options = options.AddImports(
+            "System",
+            "System.Collections.Generic",
+            "System.Linq",
+            "System.Text",
+            "System.Diagnostics",
+            "System.Windows.Forms",
+            "System.Threading"
+            );
+
+            if (script.Imports.Count > 0)
+            {
+                options = options.AddImports(script.Imports);
+            }
+
+            return options;
+        }
+
+        #endregion
+    }
+}