@Override public void visitPyDecoratorList(final PyDecoratorList node) { PyDecorator[] decorators = node.getDecorators(); for (PyDecorator deco : decorators) { if (deco.hasArgumentList()) continue; final PyCallExpression.PyMarkedCallee markedCallee = deco.resolveCallee(resolveWithoutImplicits()); if (markedCallee != null && !markedCallee.isImplicitlyResolved()) { final Callable callable = markedCallee.getCallable(); int firstParamOffset = markedCallee.getImplicitOffset(); final List<PyParameter> params = PyUtil.getParameters(callable, myTypeEvalContext); final PyNamedParameter allegedFirstParam = params.size() < firstParamOffset ? null : params.get(firstParamOffset - 1).getAsNamed(); if (allegedFirstParam == null || allegedFirstParam.isKeywordContainer()) { // no parameters left to pass function implicitly, or wrong param type registerProblem( deco, PyBundle.message( "INSP.func.$0.lacks.first.arg", callable.getName())); // TODO: better names for anon lambdas } else { // possible unfilled params for (int i = firstParamOffset; i < params.size(); i += 1) { final PyParameter parameter = params.get(i); if (parameter instanceof PySingleStarParameter) continue; final PyNamedParameter par = parameter.getAsNamed(); // param tuples, non-starred or non-default won't do if (par == null || (!par.isKeywordContainer() && !par.isPositionalContainer() && !par.hasDefaultValue())) { String parameterName = par != null ? par.getName() : "(...)"; registerProblem( deco, PyBundle.message("INSP.parameter.$0.unfilled", parameterName)); } } } } // else: this case is handled by arglist visitor } }