protected void EmitGeneratorBody()
{
BeginBlock();
var asyncTryVisitor = new AsyncTryVisitor();
Node.AcceptChildren(asyncTryVisitor);
var needTry = true;
Emitter.AsyncVariables.Add(JS.Vars.ASYNC_JUMP);
if (needTry)
{
Emitter.AsyncVariables.Add(JS.Vars.ASYNC_RETURN_VALUE);
WriteTry();
BeginBlock();
}
WriteFor();
Write("(;;) ");
BeginBlock();
WriteSwitch();
Write("(" + JS.Vars.ASYNC_STEP + ") ");
BeginBlock();
Step = 0;
var writer = SaveWriter();
AddAsyncStep();
Body.AcceptVisitor(Emitter);
RestoreWriter(writer);
InjectSteps();
WriteNewLine();
EndBlock();
WriteNewLine();
EndBlock();
if (needTry)
{
if (!Emitter.Locals.ContainsKey(JS.Vars.ASYNC_E))
{
AddLocal(JS.Vars.ASYNC_E, null, AstType.Null);
}
WriteNewLine();
EndBlock();
Write(" catch(" + JS.Vars.ASYNC_E1 + ") ");
BeginBlock();
Write(JS.Vars.ASYNC_E + " = " + JS.Types.System.Exception.CREATE + "(" + JS.Vars.ASYNC_E1 + ");");
WriteNewLine();
InjectCatchHandlers();
WriteNewLine();
EndBlock();
}
WriteNewLine();
EndBlock();
}
protected void EmitAsyncBody()
{
BeginBlock();
var asyncTryVisitor = new AsyncTryVisitor();
Node.AcceptChildren(asyncTryVisitor);
var needTry = asyncTryVisitor.Found || IsTaskReturn;
Emitter.AsyncVariables.Add(JS.Vars.ASYNC_JUMP);
if (needTry)
{
if (IsTaskReturn)
{
Emitter.AsyncVariables.Add(JS.Vars.ASYNC_TCS + " = new " + JS.Types.TASK_COMPLETION_SOURCE + "()");
}
Emitter.AsyncVariables.Add(JS.Vars.ASYNC_RETURN_VALUE);
Write("try");
WriteSpace();
BeginBlock();
}
Write("for (;;) ");
BeginBlock();
WriteIndent();
int checkerPos = Emitter.Output.Length;
WriteNewLine();
Write("switch (" + JS.Vars.ASYNC_STEP + ") ");
BeginBlock();
Step = 0;
var writer = SaveWriter();
AddAsyncStep();
if (Body.Parent is LambdaExpression && Body is Expression && IsTaskReturn && ReturnType.FullName == "System.Threading.Tasks.Task" && ReturnType.TypeParameterCount > 0)
{
new ReturnBlock(Emitter, (Expression)Body).Emit();
}
else
{
var level = Emitter.InitialLevel;
((Emitter)Emitter).InitialLevel = 0;
Emitter.ResetLevel();
Body.AcceptVisitor(Emitter);
((Emitter)Emitter).InitialLevel = level;
}
RestoreWriter(writer);
InjectSteps();
WriteNewLine();
EndBlock();
InjectStepsChecker(checkerPos);
WriteNewLine();
EndBlock();
if (needTry)
{
if (!Emitter.Locals.ContainsKey(JS.Vars.ASYNC_E))
{
AddLocal(JS.Vars.ASYNC_E, null, AstType.Null);
}
WriteNewLine();
EndBlock();
Write(" catch(" + JS.Vars.ASYNC_E1 + ") ");
BeginBlock();
Write(JS.Vars.ASYNC_E + " = " + JS.Types.System.Exception.CREATE + "(" + JS.Vars.ASYNC_E1 + ");");
WriteNewLine();
InjectCatchHandlers();
WriteNewLine();
EndBlock();
}
WriteNewLine();
EndBlock();
}