public static void Write(ScalaWriter writer, SyntaxNode node, bool isConst = false)
{
TriviaProcessor.ProcessNode(writer, node);
if (Program.DoNotWrite.ContainsKey(node))
{
return;
}
var exprOpt = node as ExpressionSyntax;
string postFactory = null;
if (exprOpt != null)
{
var type = Program.GetModel(node).GetTypeInfo(exprOpt);
if (type.Type != null && type.Type.SpecialType == SpecialType.System_Byte && type.ConvertedType.SpecialType != SpecialType.System_Byte && Utility.IsNumeric(type.ConvertedType))
{
//Bytes are signed in the JVM, so we have to take care when up-converting them
writer.Write("System.CsScala.ByteTo");
writer.Write(TypeProcessor.ConvertType(type.ConvertedType));
writer.Write("(");
postFactory = ")";
}
}
Factory(writer, node, isConst);
writer.Write(postFactory);
}
private static void Generate()
{
Console.WriteLine("Parsing...");
var sw = Stopwatch.StartNew();
if (!Directory.Exists(OutDir))
{
Directory.CreateDirectory(OutDir);
}
var allTypes = Compilation.SyntaxTrees
.SelectMany(o => o.GetRoot().DescendantNodes().OfType <BaseTypeDeclarationSyntax>())
.Select(o => new { Syntax = o, Symbol = GetModel(o).GetDeclaredSymbol(o), TypeName = WriteType.TypeName(GetModel(o).GetDeclaredSymbol(o)) })
.GroupBy(o => o.Symbol.ContainingNamespace.FullNameWithDot() + o.TypeName)
.ToList();
Utility.Parallel(Compilation.SyntaxTrees.ToList(), tree =>
{
foreach (var n in TriviaProcessor.DoNotWrite(tree))
{
DoNotWrite.TryAdd(n, null);
}
//Init ClassTags
foreach (var method in tree.GetRoot().DescendantNodes().OfType <MethodDeclarationSyntax>().Where(o => o.TypeParameterList != null))
{
ClassTags.InitMethod(GetModel(method).GetDeclaredSymbol(method), method);
}
});
Console.WriteLine("Parsed in " + sw.Elapsed + ". Writing out scala...");
sw.Restart();
Compilation.SyntaxTrees.SelectMany(o => o.GetRoot().DescendantNodes().OfType <AnonymousObjectCreationExpressionSyntax>())
.Select(o => new { Syntax = o, Name = WriteAnonymousObjectCreationExpression.TypeName(o) })
.GroupBy(o => o.Name)
.Parallel(o => WriteAnonymousObjectCreationExpression.WriteAnonymousType(o.First().Syntax));
allTypes.Parallel(type =>
{
TypeState.Instance = new TypeState();
TypeState.Instance.TypeName = type.First().TypeName;
TypeState.Instance.Partials = type.Select(o => new TypeState.SyntaxAndSymbol {
Symbol = o.Symbol, Syntax = o.Syntax
})
.Where(o => !DoNotWrite.ContainsKey(o.Syntax))
.ToList();
if (TypeState.Instance.Partials.Count > 0)
{
WriteType.Go();
}
});
WriteConstructorBody.WriteConstructorsHelper(allTypes.SelectMany(o => o).Where(o => !DoNotWrite.ContainsKey(o.Syntax)).Select(o => o.Symbol));
Console.WriteLine("Scala written out in " + sw.Elapsed);
}
public static void WriteBlock(ScalaWriter writer, BlockSyntax block, bool writeBraces = true)
{
if (writeBraces)
{
writer.WriteOpenBrace();
}
foreach (var statement in block.Statements)
{
Write(writer, statement);
}
TriviaProcessor.ProcessTrivias(writer, block.DescendantTrivia());
if (writeBraces)
{
writer.WriteCloseBrace();
}
}
public static void WriteStatementAsBlock(ScalaWriter writer, StatementSyntax statement, bool writeBraces = true)
{
if (statement is BlockSyntax)
{
WriteBlock(writer, statement.As <BlockSyntax>(), writeBraces);
}
else
{
if (writeBraces)
{
writer.WriteOpenBrace();
}
Core.Write(writer, statement);
TriviaProcessor.ProcessTrivias(writer, statement.DescendantTrivia());
if (writeBraces)
{
writer.WriteCloseBrace();
}
}
}
public static void Go(ScalaWriter writer, MethodDeclarationSyntax method)
{
if (method.Modifiers.Any(SyntaxKind.PartialKeyword) && method.Body == null)
{
//We only want to render out one of the two partial methods. If there's another, skip this one.
if (TypeState.Instance.Partials.SelectMany(o => o.Syntax.As <ClassDeclarationSyntax>().Members)
.OfType <MethodDeclarationSyntax>()
.Except(method)
.Where(o => o.Identifier.ValueText == method.Identifier.ValueText)
.Any())
{
return;
}
}
var methodSymbol = Program.GetModel(method).GetDeclaredSymbol(method);
if (method.Identifier.ValueText == "GetEnumerator")
{
WriteGetEnumeratorFunction(writer, method, methodSymbol);
return;
}
writer.WriteIndent();
if (ShouldUseOverrideKeyword(method, methodSymbol))
{
writer.Write("override ");
}
if (method.Modifiers.Any(SyntaxKind.PrivateKeyword))
{
writer.Write("private ");
}
writer.Write("def ");
var methodName = OverloadResolver.MethodName(methodSymbol);
if (methodName == "ToString")
{
methodName = "toString";
}
else if (methodName == "Equals")
{
methodName = "equals";
}
else if (methodName == "GetHashCode")
{
methodName = "hashCode";
}
else if (methodName == "Main")
{
methodName = "main";
}
writer.Write(methodName);
if (method.TypeParameterList != null)
{
writer.Write("[");
writer.Write(string.Join(", ", method.TypeParameterList.Parameters.Select(o => TypeParameter(o, methodSymbol, method))));
writer.Write("]");
}
writer.Write("(");
var firstParam = true;
foreach (var parameter in method.ParameterList.Parameters)
{
bool isRef = parameter.Modifiers.Any(SyntaxKind.OutKeyword) || parameter.Modifiers.Any(SyntaxKind.RefKeyword);
if (firstParam)
{
firstParam = false;
}
else
{
writer.Write(", ");
}
writer.Write(WriteIdentifierName.TransformIdentifier(parameter.Identifier.ValueText));
if (isRef)
{
writer.Write(":CsRef[");
writer.Write(TypeProcessor.ConvertType(parameter.Type));
writer.Write("]");
Program.RefOutSymbols.TryAdd(Program.GetModel(method).GetDeclaredSymbol(parameter), null);
}
else
{
writer.Write(TypeProcessor.ConvertTypeWithColon(parameter.Type));
}
if (parameter.Default != null)
{
writer.Write(" = ");
Core.Write(writer, parameter.Default.Value);
}
}
writer.Write(")");
bool returnsVoid = method.ReturnType.ToString() == "void";
if (!returnsVoid)
{
writer.Write(TypeProcessor.ConvertTypeWithColon(method.ReturnType));
}
if (method.Modifiers.Any(SyntaxKind.AbstractKeyword) || method.Parent is InterfaceDeclarationSyntax)
{
writer.Write(";\r\n");
}
else
{
if (!returnsVoid)
{
writer.Write(" =");
}
writer.Write("\r\n");
writer.WriteOpenBrace();
if (method.Body != null)
{
foreach (var statement in method.Body.Statements)
{
Core.Write(writer, statement);
}
TriviaProcessor.ProcessTrivias(writer, method.Body.DescendantTrivia());
}
writer.WriteCloseBrace();
}
}
private static void Go(ScalaWriter writer, IEnumerable <ParameterSyntax> parameters, SyntaxNode body, TypeInfo type)
{
var methodSymbol = type.ConvertedType.As <INamedTypeSymbol>().DelegateInvokeMethod.As <IMethodSymbol>();
writer.Write("(");
for (int pi = 0; pi < parameters.Count(); pi++)
{
var parameter = parameters.ElementAt(pi);
if (pi > 0)
{
writer.Write(", ");
}
writer.Write(WriteIdentifierName.TransformIdentifier(parameter.Identifier.ValueText));
if (parameter.Type != null)
{
writer.Write(TypeProcessor.ConvertTypeWithColon(parameter.Type));
}
else
{
writer.Write(TypeProcessor.ConvertTypeWithColon(methodSymbol.Parameters[pi].Type));
}
}
writer.Write(") => ");
bool returnsVoid = methodSymbol.ReturnType.ToString() == "void";
if (body is BlockSyntax)
{
writer.Write("\r\n");
writer.WriteOpenBrace();
var statements = body.As <BlockSyntax>().Statements;
var lastStatement = statements.LastOrDefault() as ReturnStatementSyntax;
var returnStatements = FindReturnStatements(body);
if (returnStatements.Count > 0 && (lastStatement == null || returnStatements.Except(lastStatement).Any()))
{
//Lambda has branching returns. We must use a breakable block since scala can't return from a lambda like C# can
TypeState.Instance.InLambdaBreakable++;
writer.WriteLine("val __lambdabreak = new Breaks;");
if (!returnsVoid)
{
writer.WriteIndent();
writer.Write("var __lambdareturn:");
writer.Write(TypeProcessor.ConvertType(methodSymbol.ReturnType));
writer.Write(" = ");
writer.Write(TypeProcessor.DefaultValue(methodSymbol.ReturnType));
writer.Write(";\r\n");
}
writer.WriteLine("__lambdabreak.breakable");
writer.WriteOpenBrace();
foreach (var statement in statements)
{
if (statement == lastStatement && !returnsVoid)
{
//Manually write it so we avoid the final break that WriteReturnStatement does
writer.WriteIndent();
writer.Write("__lambdareturn = ");
Core.Write(writer, lastStatement.Expression);
writer.Write(";\r\n");
}
else
{
Core.Write(writer, statement);
}
}
TriviaProcessor.ProcessTrivias(writer, body.DescendantTrivia());
writer.WriteCloseBrace();
if (!returnsVoid)
{
writer.WriteLine("__lambdareturn;");
}
TypeState.Instance.InLambdaBreakable--;
}
else
{
foreach (var statement in statements)
{
if (statement == lastStatement)
{
writer.WriteIndent();
Core.Write(writer, lastStatement.Expression);
writer.Write(";\r\n");
}
else
{
Core.Write(writer, statement);
}
}
}
writer.Indent--;
writer.WriteIndent();
writer.Write("}");
}
else
{
writer.Write(" { ");
Core.Write(writer, body);
writer.Write("; }");
}
if (!returnsVoid)
{
writer.Write(TypeProcessor.ConvertTypeWithColon(methodSymbol.ReturnType));
}
}