Context cx = context.getAscContext();
symbolTable.perCompileData.handler = cx.getHandler();
ProgramNode node = (ProgramNode) unit.getSyntaxTree();
LineNumberMap map = (LineNumberMap) context.getAttribute("LineNumberMap");
Emitter emitter = new BytecodeEmitter(cx, unit.getSource(),
as3Configuration.debug() || as3Configuration.verboseStacktraces(),
!as3Configuration.optimize(),
as3Configuration.keepEmbedMetadata(),