public static (ASTNode node, string text) DecompileExport(ExportEntry export, FileLib lib = null)
{
try
{
ASTNode astNode = null;
switch (export.ClassName)
{
case "Class":
astNode = ME3ObjectToASTConverter.ConvertClass(export.GetBinaryData <UClass>(), true, lib);
break;
case "Function":
astNode = ME3ObjectToASTConverter.ConvertFunction(export.GetBinaryData <UFunction>(), lib: lib);
break;
case "State":
astNode = ME3ObjectToASTConverter.ConvertState(export.GetBinaryData <UState>(), lib: lib);
break;
case "Enum":
astNode = ME3ObjectToASTConverter.ConvertEnum(export.GetBinaryData <UEnum>());
break;
case "ScriptStruct":
astNode = ME3ObjectToASTConverter.ConvertStruct(export.GetBinaryData <UScriptStruct>());
break;
default:
if (export.ClassName.EndsWith("Property") && ObjectBinary.From(export) is UProperty uProp)
{
astNode = ME3ObjectToASTConverter.ConvertVariable(uProp);
}
else
{
astNode = ME3ObjectToASTConverter.ConvertDefaultProperties(export);
}
break;
}
if (astNode != null)
{
var codeBuilder = new CodeBuilderVisitor();
astNode.AcceptVisitor(codeBuilder);
return(astNode, codeBuilder.GetCodeString());
}
}
catch (Exception e) when(!App.IsDebug)
{
return(null, $"Error occured while decompiling {export?.InstancedFullPath}:\n\n{e.FlattenException()}");
}
return(null, "Could not decompile!");
}
public static bool ResolveAllClassesInPackage(IMEPackage pcc, ref SymbolTable symbols)
{
string fileName = Path.GetFileNameWithoutExtension(pcc.FilePath);
#if DEBUGSCRIPT
string dumpFolderPath = Path.Combine(ME3Directory.gamePath, "ScriptDump", fileName);
Directory.CreateDirectory(dumpFolderPath);
#endif
var log = new MessageLog();
Debug.WriteLine($"{fileName}: Beginning Parse.");
var classes = new List <(Class ast, string scriptText)>();
foreach (ExportEntry export in pcc.Exports.Where(exp => exp.IsClass))
{
Class cls = ME3ObjectToASTConverter.ConvertClass(export.GetBinaryData <UClass>(), false);
string scriptText = "";
try
{
#if DEBUGSCRIPT
var codeBuilder = new CodeBuilderVisitor();
cls.AcceptVisitor(codeBuilder);
scriptText = codeBuilder.GetCodeString();
File.WriteAllText(Path.Combine(dumpFolderPath, $"{cls.Name}.uc"), scriptText);
var parser = new ClassOutlineParser(new TokenStream <string>(new StringLexer(scriptText, log)), log);
cls = parser.TryParseClass();
if (cls == null || log.Content.Any())
{
DisplayError(scriptText, log.ToString());
return(false);
}
#endif
if (export.ObjectName == "Object")
{
symbols = SymbolTable.CreateIntrinsicTable(cls);
}
else
{
symbols.AddType(cls);
}
classes.Add(cls, scriptText);
}
catch (Exception e) when(!App.IsDebug)
{
DisplayError(scriptText, log.ToString());
return(false);
}
}
Debug.WriteLine($"{fileName}: Finished parse.");
foreach (var validationPass in Enums.GetValues <ValidationPass>())
{
foreach ((Class ast, string scriptText) in classes)
{
try
{
var validator = new ClassValidationVisitor(log, symbols, validationPass);
ast.AcceptVisitor(validator);
if (log.Content.Any())
{
DisplayError(scriptText, log.ToString());
return(false);
}
}
catch (Exception e) when(!App.IsDebug)
{
DisplayError(scriptText, log.ToString());
return(false);
}
}
Debug.WriteLine($"{fileName}: Finished validation pass {validationPass}.");
}
switch (fileName)
{
case "Core":
symbols.InitializeOperators();
break;
case "Engine":
symbols.ValidateIntrinsics();
break;
}
#if DEBUGSCRIPT
//parse function bodies for testing purposes
foreach ((Class ast, string scriptText) in classes)
{
symbols.RevertToObjectStack();
if (!ast.Name.CaseInsensitiveEquals("Object"))
{
symbols.GoDirectlyToStack(((Class)ast.Parent).GetInheritanceString());
symbols.PushScope(ast.Name);
}
foreach (Function function in ast.Functions.Where(func => !func.IsNative && func.IsDefined))
{
CodeBodyParser.ParseFunction(function, scriptText, symbols, log);
if (log.Content.Any())
{
DisplayError(scriptText, log.ToString());
}
}
}
#endif
symbols.RevertToObjectStack();
return(true);
}