Highlight 'var' primary constructor parameters as mutable

#KT-11467 Fixed

idea/idea-analysis/src/org/jetbrains/kotlin/idea/highlighter/PropertiesHighlightingVisitor.kt

@@ -1,17 +1,6 @@
 /*
- * Copyright 2010-2015 JetBrains s.r.o.
+ * Copyright 2000-2018 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license
- *
+ * that can be found in the license/LICENSE.txt file.
- * 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 org.jetbrains.kotlin.idea.highlighter
@@ -63,6 +52,9 @@ internal class PropertiesHighlightingVisitor(holder: AnnotationHolder, bindingCo
         val nameIdentifier = parameter.nameIdentifier ?: return
         val propertyDescriptor = bindingContext.get(BindingContext.PRIMARY_CONSTRUCTOR_PARAMETER, parameter)
         if (propertyDescriptor != null) {
+            if (propertyDescriptor.isVar) {
+                highlightName(nameIdentifier, MUTABLE_VARIABLE)
+            }
             highlightProperty(nameIdentifier, propertyDescriptor)
         }
 

idea/testData/highlighter/Variables.kt

@@ -10,7 +10,11 @@ val <info textAttributesKey="KOTLIN_PACKAGE_PROPERTY">y</info> : <info textAttri
   return 5.<info textAttributesKey="KOTLIN_EXTENSION_PROPERTY">sq</info> + <info textAttributesKey="KOTLIN_BACKING_FIELD_VARIABLE">field</info> + <info textAttributesKey="KOTLIN_PACKAGE_PROPERTY"><info textAttributesKey="KOTLIN_MUTABLE_VARIABLE">x</info></info>
 }
 
-class <info textAttributesKey="KOTLIN_CLASS">Foo</info>(val <info textAttributesKey="KOTLIN_INSTANCE_PROPERTY">a</info> : <info textAttributesKey="KOTLIN_CLASS">Int</info>, <info textAttributesKey="KOTLIN_PARAMETER">b</info> : <info textAttributesKey="KOTLIN_CLASS">String</info>) {
+class <info textAttributesKey="KOTLIN_CLASS">Foo</info>(
+    val <info textAttributesKey="KOTLIN_INSTANCE_PROPERTY">a</info> : <info textAttributesKey="KOTLIN_CLASS">Int</info>,
+    <info textAttributesKey="KOTLIN_PARAMETER">b</info> : <info textAttributesKey="KOTLIN_CLASS">String</info>,
+    var <info textAttributesKey="KOTLIN_MUTABLE_VARIABLE"><info textAttributesKey="KOTLIN_INSTANCE_PROPERTY">c</info></info> : <info textAttributesKey="KOTLIN_CLASS">String</info>
+) {
   <info>init</info> {
     <info textAttributesKey="KOTLIN_PARAMETER">b</info>
   }