// Automatically compile the structure modifier
if (compile && !(result instanceof CompiledStructureModifier)) {
// Compilation is many orders of magnitude slower than synchronization
synchronized (compiling) {
final BackgroundCompiler compiler = BackgroundCompiler.getInstance();
if (!compiling.contains(type) && compiler != null) {
compiler.scheduleCompilation(result, new CompileListener<Object>() {
@Override
public void onCompiled(StructureModifier<Object> compiledModifier) {
structureModifiers.put(type, compiledModifier);
}
});