/// <summary>
/// Compiles C# code. Optionally loads in-memory assembly and gets MethodInfo of the first static method for executing.
/// Returns false if there are errors in code.
/// </summary>
/// <param name="code">C# code. If wrap is false - full code with class and usings; if true - one or more functions and other class-level declarations.</param>
/// <param name="r">Receives results when compiled successfully.</param>
/// <param name="wrap">Add default usings and wrap code into "[module: DefaultCharSet(CharSet.Unicode)]\r\npublic class __script__ {\r\n#line 1" ... "}".</param>
/// <param name="load">Load in-memory assembly and get MethodInfo of the first static method for executing.</param>
/// <remarks>
/// Adds <see cref="MetaReferences.DefaultReferences"/>. If wrap is true, adds <see cref="c_defaultUsings"/>.
///
/// Function's code does not throw exceptions, but the CodeAnalysis API may throw, although undocumented and never noticed.
///
/// Thread-safe.
/// </remarks>
public static bool Compile(string code, out Result r, bool wrap, bool load)
{
if (wrap)
{
var b = new StringBuilder();
b.AppendLine(c_defaultUsings);
b.AppendLine("[module: DefaultCharSet(CharSet.Unicode)]\r\npublic class __script__ {\r\n#line 1");
b.AppendLine(code).Append("}");
code = b.ToString();
}
var tree = CSharpSyntaxTree.ParseText(code, new CSharpParseOptions(LanguageVersion.Latest), "", Encoding.UTF8);
var refs = new MetaReferences().Refs;
var options = new CSharpCompilationOptions(OutputKind.DynamicallyLinkedLibrary, allowUnsafe: true);
var compilation = CSharpCompilation.Create("test", new SyntaxTree[] { tree }, refs, options);
var memStream = new MemoryStream(4096);
var emitResult = compilation.Emit(memStream);
r = new Result();
if (!emitResult.Success)
{
var sb = new StringBuilder();
foreach (var d in emitResult.Diagnostics)
{
if (d.Severity == DiagnosticSeverity.Error)
{
sb.AppendLine(d.ToString());
}
}
r.errors = sb.ToString();
return(false);
}
memStream.Position = 0;
if (load)
{
r.assembly = Assembly.Load(memStream.ToArray());
r.method = r.assembly.GetTypes()[0].GetMethods(BindingFlags.InvokeMethod | BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.Static)[0];
}
else
{
r.stream = memStream;
}
return(true);
}
/// <summary>
/// Extracts meta comments from a single C# file.
/// </summary>
/// <param name="f"></param>
/// <param name="isMain">If false, it is a file added through meta option 'c'.</param>
void _ParseFile(FileNode f, bool isMain)
{
//var p1 = APerf.Create();
string code = f.GetText(cache: true);
//p1.Next();
bool isScript = f.IsScript;
if (_isMain = isMain)
{
Name = APath.GetFileName(f.Name, true);
IsScript = isScript;
Optimize = DefaultOptimize;
WarningLevel = DefaultWarningLevel;
NoWarnings = DefaultNoWarnings != null ? new List <string>(DefaultNoWarnings) : new List <string>();
Defines = new List <string>();
Role = DefaultRole(isScript);
CodeFiles = new List <MetaCodeFile>();
References = new MetaReferences();
}
CodeFiles.Add(new MetaCodeFile(f, code));
_fn = f;
_code = code;
int endOf = FindMetaComments(code);
if (endOf > 0)
{
if (isMain)
{
EndOfMeta = endOf;
}
foreach (var t in EnumOptions(code, endOf))
{
//var p1 = APerf.Create();
_ParseOption(t.Name(), t.Value(), t.nameStart, t.valueStart);
//p1.Next(); var t1 = p1.TimeTotal; if(t1 > 5) AOutput.Write(t1, t.Name(), t.Value());
}
}
//p1.NW();
}
static bool _Compile(bool forRun, FileNode f, out CompResults r, FileNode projFolder)
{
var p1 = APerf.Create();
r = new CompResults();
var m = new MetaComments();
if (!m.Parse(f, projFolder, EMPFlags.PrintErrors))
{
return(false);
}
var err = m.Errors;
p1.Next('m');
bool needOutputFiles = m.Role != ERole.classFile;
//if for run, don't compile if f role is classFile
if (forRun && !needOutputFiles)
{
r.role = ERole.classFile;
return(false);
}
XCompiled cache = XCompiled.OfCollection(f.Model);
string outPath = null, outFile = null, fileName = null;
if (needOutputFiles)
{
if (m.OutputPath != null)
{
outPath = m.OutputPath;
fileName = m.Name + ".dll";
}
else
{
outPath = cache.CacheDirectory;
fileName = f.IdString;
}
outFile = outPath + "\\" + fileName;
AFile.CreateDirectory(outPath);
}
if (m.PreBuild.f != null && !_RunPrePostBuildScript(false, m, outFile))
{
return(false);
}
var po = m.CreateParseOptions();
var trees = new CSharpSyntaxTree[m.CodeFiles.Count];
for (int i = 0; i < trees.Length; i++)
{
var f1 = m.CodeFiles[i];
trees[i] = CSharpSyntaxTree.ParseText(f1.code, po, f1.f.FilePath, Encoding.UTF8) as CSharpSyntaxTree;
//info: file path is used later in several places: in compilation error messages, run time stack traces (from PDB), Visual Studio debugger, etc.
// Our AOutputServer.SetNotifications callback will convert file/line info to links. It supports compilation errors and run time stack traces.
}
//p1.Next('t');
string asmName = m.Name;
if (m.Role == ERole.editorExtension)
{
asmName = asmName + "|" + (++c_versionCounter).ToString(); //AssemblyLoadContext.Default cannot load multiple assemblies with same name
}
var compilation = CSharpCompilation.Create(asmName, trees, m.References.Refs, m.CreateCompilationOptions());
//p1.Next('c');
#if PDB
string pdbFile = null;
#endif
MemoryStream pdbStream = null;
string xdFile = null;
Stream xdStream = null;
Stream resNat = null;
ResourceDescription[] resMan = null;
EmitOptions eOpt = null;
if (needOutputFiles)
{
_AddAttributes(ref compilation, needVersionEtc: m.Role == ERole.miniProgram || m.Role == ERole.exeProgram);
//create debug info always. It is used for run-time error links.
#if PDB
pdbStream = new MemoryStream();
if (m.OutputPath != null)
{
pdbFile = Path.ChangeExtension(outFile, "pdb");
eOpt = new EmitOptions(debugInformationFormat: DebugInformationFormat.Pdb, pdbFilePath: pdbFile);
//eOpt = new EmitOptions(debugInformationFormat: DebugInformationFormat.PortablePdb, pdbFilePath: pdbFile); //smaller, but not all tools support it
}
else
{
//eOpt = new EmitOptions(debugInformationFormat: DebugInformationFormat.Embedded); //no, it is difficult to extract, because we load assembly from byte[] to avoid locking. We instead append portable PDB stream to the assembly stream.
eOpt = new EmitOptions(debugInformationFormat: DebugInformationFormat.PortablePdb);
//adds < 1 KB; almost the same compiling speed. Separate pdb file is 14 KB; 2 times slower compiling, slower loading.
}
#else
if (m.OutputPath != null)
{
//we don't use classic pdb file becouse of this error after switching to .NET Core:
// Unexpected error writing debug information -- 'The version of Windows PDB writer is older than required: 'diasymreader.dll''
eOpt = new EmitOptions(debugInformationFormat: DebugInformationFormat.Embedded);
}
else
{
pdbStream = new MemoryStream();
//eOpt = new EmitOptions(debugInformationFormat: DebugInformationFormat.Embedded); //no, it is difficult to extract, because we load assembly from byte[] to avoid locking. We instead append portable PDB stream to the assembly stream.
eOpt = new EmitOptions(debugInformationFormat: DebugInformationFormat.PortablePdb);
//adds < 1 KB; almost the same compiling speed. Separate pdb file is 14 KB; 2 times slower compiling, slower loading.
}
#endif
if (m.XmlDocFile != null)
{
xdStream = AFile.WaitIfLocked(() => File.Create(xdFile = APath.Normalize(m.XmlDocFile, outPath)));
}
resMan = _CreateManagedResources(m);
if (err.ErrorCount != 0)
{
err.PrintAll(); return(false);
}
if (m.Role == ERole.exeProgram || m.Role == ERole.classLibrary)
{
resNat = _CreateNativeResources(m, compilation);
}
if (err.ErrorCount != 0)
{
err.PrintAll(); return(false);
}
//EmbeddedText.FromX //it seems we can embed source code in PDB. Not tested.
}
//p1.Next();
var asmStream = new MemoryStream(8000);
var emitResult = compilation.Emit(asmStream, pdbStream, xdStream, resNat, resMan, eOpt);
if (needOutputFiles)
{
xdStream?.Dispose();
resNat?.Dispose(); //info: compiler disposes resMan
}
//p1.Next('e');
var diag = emitResult.Diagnostics;
if (!diag.IsEmpty)
{
foreach (var d in diag)
{
if (d.Severity == DiagnosticSeverity.Hidden)
{
continue;
}
err.AddErrorOrWarning(d, f);
if (d.Severity == DiagnosticSeverity.Error && d.Id == "CS0009")
{
MetaReferences.RemoveBadReference(d.GetMessage());
}
}
err.PrintAll();
}
if (!emitResult.Success)
{
if (needOutputFiles)
{
AFile.Delete(outFile);
#if PDB
if (pdbFile != null)
{
AFile.Delete(pdbFile);
}
#endif
if (xdFile != null)
{
AFile.Delete(xdFile);
}
}
return(false);
}
if (needOutputFiles)
{
//If there is no [STAThread], will need MTA thread.
if (m.Role == ERole.miniProgram || m.Role == ERole.exeProgram)
{
bool hasSTAThread = compilation.GetEntryPoint(default)?.GetAttributes().Any(o => o.ToString() == "System.STAThreadAttribute") ?? false;