continue work on annotation of keyword-only args

python/src/com/jetbrains/python/PyBundle.properties

@@ -157,6 +157,7 @@ ANN.starred.param.after.kwparam=* parameter after ** parameter
 ANN.regular.param.after.vararg=regular parameter after * parameter
 ANN.regular.param.after.keyword=regular parameter after ** parameter
 ANN.non.default.param.after.default=non-default parameter follows default parameter
+ANN.named.arguments.after.star=named arguments must follow bare *
 
 ANN.star.import.at.top.only='import *' only allowed at module level
 

python/src/com/jetbrains/python/validation/ParameterListAnnotator.java

@@ -22,34 +22,41 @@ public class ParameterListAnnotator extends PyAnnotator {
         boolean hadKeywordContainer = false;
         boolean hadDefaultValue = false;
         boolean hadSingleStar = false;
+        boolean hadParamsAfterSingleStar = false;
         @Override
         public void visitNamedParameter(PyNamedParameter parameter, boolean first, boolean last) {
           if (parameterNames.contains(parameter.getName())) {
-            getHolder().createErrorAnnotation(parameter, PyBundle.message("ANN.duplicate.param.name"));
+            markError(parameter, PyBundle.message("ANN.duplicate.param.name"));
           }
           parameterNames.add(parameter.getName());
           if (parameter.isPositionalContainer()) {
             if (hadKeywordContainer) {
-              getHolder().createErrorAnnotation(parameter, PyBundle.message("ANN.starred.param.after.kwparam"));
+              markError(parameter, PyBundle.message("ANN.starred.param.after.kwparam"));
             }
             hadPositionalContainer = true;
           }
           else if (parameter.isKeywordContainer()) {
             hadKeywordContainer = true;
+            if (hadSingleStar && !hadParamsAfterSingleStar) {
+              markError(parameter, PyBundle.message("ANN.named.arguments.after.star"));
+            }
           }
           else {
+            if (hadSingleStar) {
+              hadParamsAfterSingleStar = true;
+            }
             if (hadPositionalContainer && !languageLevel.isPy3K()) {
-              getHolder().createErrorAnnotation(parameter, PyBundle.message("ANN.regular.param.after.vararg"));
+              markError(parameter, PyBundle.message("ANN.regular.param.after.vararg"));
             }
             else if (hadKeywordContainer) {
-              getHolder().createErrorAnnotation(parameter, PyBundle.message("ANN.regular.param.after.keyword"));
+              markError(parameter, PyBundle.message("ANN.regular.param.after.keyword"));
             }
             if (parameter.getDefaultValue() != null) {
               hadDefaultValue = true;
             }
             else {
               if (hadDefaultValue && !hadSingleStar && (!languageLevel.isPy3K() || !hadPositionalContainer)) {
-                getHolder().createErrorAnnotation(parameter, PyBundle.message("ANN.non.default.param.after.default"));
+                markError(parameter, PyBundle.message("ANN.non.default.param.after.default"));
               }
             }
           }
@@ -58,6 +65,9 @@ public class ParameterListAnnotator extends PyAnnotator {
         @Override
         public void visitSingleStarParameter(PySingleStarParameter param, boolean first, boolean last) {
           hadSingleStar = true;
+          if (last) {
+            markError(param, PyBundle.message("ANN.named.arguments.after.star"));
+          }
         }
       }
     );

python/src/com/jetbrains/python/validation/PyAnnotator.java

@@ -1,19 +1,3 @@
-/*
- *  Copyright 2005 Pythonid Project
- *
- *  Licensed under the Apache License, Version 2.0 (the "License");
- *  you may not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS"; BASIS,
- *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
- */
-
 package com.jetbrains.python.validation;
 
 import com.jetbrains.python.psi.PyElementVisitor;
@@ -21,11 +5,7 @@ import com.intellij.lang.annotation.AnnotationHolder;
 import com.intellij.psi.PsiElement;
 
 /**
- * Created by IntelliJ IDEA.
- * User: yole
- * Date: 12.06.2005
- * Time: 13:43:02
- * To change this template use File | Settings | File Templates.
+ * @author yole
  */
 public abstract class PyAnnotator extends PyElementVisitor {
   private AnnotationHolder _holder;
@@ -47,4 +27,8 @@ public abstract class PyAnnotator extends PyElementVisitor {
       setHolder(null);
     }
   }
+
+  protected void markError(PsiElement element, String message) {
+    getHolder().createErrorAnnotation(element, message);
+  }
 }

python/testData/highlighting/keywordOnlyArguments.py

@@ -1,2 +1,12 @@
 def keywordonly_sum(*, k1=0, k2):
     return k1 + k2
+
+def keywordonly_sum_bad1(p, <error descr="named arguments must follow bare *">*</error>):
+    pass
+
+def keywordonly_sum_bad2(p1, *, <error descr="named arguments must follow bare *">**k1</error>):
+    pass
+
+def keywordonly_and_kwarg_sum(*, k1, k2, **kwarg):
+    return k1 + k2 + sum(kwarg.values())
+