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using Microsoft.CodeAnalysis.CSharp.Scripting;
using Microsoft.CodeAnalysis.Scripting;
using Newtonsoft.Json;
using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Linq;
using System.Reflection;
using System.Text;
using System.Text.RegularExpressions;
using System.Threading;
using System.Threading.Tasks;
using System.Windows.Forms;
using Tango.Core;
using Tango.Core.IO;
using Tango.Scripting.Core;
using System.IO;
using Tango.Core.Helpers;
namespace Tango.Scripting.Basic
{
public class Project<T> : ExtendedObject where T : IContext
{
public String ID { get; set; }
private String _name;
public String Name
{
get { return _name; }
set { _name = value; RaisePropertyChangedAuto(); }
}
private String _description;
public String Description
{
get { return _description; }
set { _description = value; RaisePropertyChangedAuto(); }
}
public ApartmentState ApartmentState { get; set; }
public ObservableCollection<ReferenceAssembly> ReferenceAssemblies { get; set; }
public ObservableCollection<Script> Scripts { get; set; }
[JsonIgnore]
public ObservableCollection<IScriptSource> AdditionalScripts
{
get
{
return Scripts.Where(x => !x.IsEntryPoint).Cast<IScriptSource>().ToObservableCollection();
}
}
public List<ScriptBreakPoint> BreakPoints { get; set; }
public Project()
{
ID = Guid.NewGuid().ToString();
ApartmentState = ApartmentState.MTA;
ReferenceAssemblies = new ObservableCollection<ReferenceAssembly>();
Scripts = new ObservableCollection<Script>();
Scripts.CollectionChanged += (x, e) => { RaisePropertyChanged(nameof(AdditionalScripts)); };
BreakPoints = new List<ScriptBreakPoint>();
}
public Task<CompilationResult> Compile()
{
return Task.Factory.StartNew<CompilationResult>(() =>
{
var result = new CompilationResult();
var tempFolder = TemporaryManager.CreateFolder(Name + "_" + ID);
result.TemporaryProjectPath = tempFolder;
String mainScriptCode = String.Empty;
foreach (var script in Scripts)
{
script.LoadCount = 0;
script.LoadCharCount = 0;
String code = script.Code;
String codeFile = Path.Combine(tempFolder, script.Name);
String loadingString = String.Empty;
foreach (var file in Scripts.Where(x => !x.IsEntryPoint && script != x).Select(x => Path.Combine(tempFolder, x.Name)))
{
loadingString += $"#load \"{file}\"\n";
script.LoadCount++;
}
script.LoadCharCount += loadingString.Length;
code = loadingString + code;
int debugLinesLength = 0;
foreach (var breakPoint in BreakPoints.Where(x => x.Script == script).OrderBy(x => x.LineNumber))
{
var debugLine = $"context.BreakPoint(\"{script.Name}\",{breakPoint.LineNumber}";
foreach (var symbol in breakPoint.ContextSymbols)
{
debugLine += $",\"{symbol.Name}\",{symbol.Offset},{symbol.Length},{symbol.Name}";
}
debugLine += ");";
StringBuilder builder = new StringBuilder(code);
builder.Insert(breakPoint.LineStartOffset + loadingString.Length + debugLinesLength, debugLine);
code = builder.ToString();
debugLinesLength += debugLine.Length;
}
if (!script.IsEntryPoint)
{
File.WriteAllText(codeFile, code);
}
else
{
code += Environment.NewLine + Environment.NewLine + "new Program().OnExecute(GlobalContext);";
mainScriptCode = code;
}
}
var scriptOptions = ScriptOptions.Default.WithReferences(LoadReferenceAssemblies()).WithEmitDebugInformation(true);
var s = CSharpScript.Create<object>(mainScriptCode, scriptOptions, typeof(GlobalObject<T>));
result.Script = s;
var compileResults = s.Compile();
GC.Collect();
foreach (var error in compileResults.Where(x => x.Severity == Microsoft.CodeAnalysis.DiagnosticSeverity.Error))
{
CompilationError cError = new CompilationError();
cError.File = System.IO.Path.GetFileName(error.Location.SourceTree.FilePath);
if (cError.File == String.Empty)
{
cError.File = Scripts.Single(x => x.IsEntryPoint).Name;
}
Script errorScript = Scripts.Single(x => x.Name == cError.File);
cError.Message = error.GetMessage();
cError.Severity = error.Severity;
cError.Position = error.Location.SourceSpan.Start - (errorScript != null ? errorScript.LoadCharCount : 0);
var line = error.Location.GetMappedLineSpan();
cError.Line = line.StartLinePosition.Line + 1 - (errorScript != null ? errorScript.LoadCount : 0);
cError.Column = line.StartLinePosition.Character + 1;
cError.Length = line.EndLinePosition.Character - line.StartLinePosition.Character;
result.Errors.Add(cError);
}
return result;
});
}
public async Task<ProjectSession<T>> Run(T context)
{
var result = await Compile();
if (result.Errors.Count > 0)
{
throw new InvalidOperationException($"Cannot run project with the following compilation errors:\n{String.Join(Environment.NewLine, result.Errors.Select(x => x.Message))}");
}
Thread scriptThread = null;
ProjectSession<T> session = null;
session = new ProjectSession<T>(this, () =>
{
scriptThread.Abort();
});
scriptThread = new Thread(() =>
{
try
{
var runResult = result.Script.RunAsync(globals: new GlobalObject<T>() { GlobalContext = context }).Result;
session.Completed(runResult.ReturnValue);
}
catch (ThreadAbortException)
{
}
catch (Exception ex)
{
session.Failed(ex.InnerException);
}
finally
{
BreakPoints.Clear();
GC.Collect();
}
});
scriptThread.SetApartmentState(ApartmentState);
scriptThread.IsBackground = true;
scriptThread.Start();
return session;
}
public List<Assembly> LoadReferenceAssemblies()
{
List<Assembly> loadedAssemblies = new List<Assembly>();
foreach (var asm in ReferenceAssemblies)
{
loadedAssemblies.Add(asm.Load());
}
return loadedAssemblies;
}
}
}
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