Enable keyword highlighting in .kotlin_class, .kotlin_package files

idea/idea-analysis/src/org/jetbrains/kotlin/idea/decompiler/builtIns/KotlinSyntaxHighlighterProviderForDecompiledBuiltIns.kt

@@ -0,0 +1,33 @@
+/*
+ * Copyright 2010-2015 JetBrains s.r.o.
+ *
+ * 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.decompiler.builtIns
+
+import com.intellij.openapi.fileTypes.FileType
+import com.intellij.openapi.fileTypes.SyntaxHighlighter
+import com.intellij.openapi.fileTypes.SyntaxHighlighterProvider
+import com.intellij.openapi.project.Project
+import com.intellij.openapi.vfs.VirtualFile
+import org.jetbrains.kotlin.idea.highlighter.KotlinHighlighter
+
+class KotlinSyntaxHighlighterProviderForDecompiledBuiltIns : SyntaxHighlighterProvider {
+    override fun create(fileType: FileType, project: Project?, file: VirtualFile?): SyntaxHighlighter? {
+        if (fileType == KotlinBuiltInClassFileType || fileType == KotlinBuiltInPackageFileType) {
+            return KotlinHighlighter()
+        }
+        return null
+    }
+}

idea/src/META-INF/plugin.xml

@@ -301,6 +301,7 @@
     <buildProcess.parametersProvider implementation="org.jetbrains.kotlin.idea.compiler.configuration.KotlinBuildProcessParametersProvider"/>
 
     <lang.syntaxHighlighterFactory key="kotlin" implementationClass="org.jetbrains.kotlin.idea.highlighter.KotlinSyntaxHighlighterFactory"/>
+    <syntaxHighlighter factoryClass="org.jetbrains.kotlin.idea.decompiler.builtIns.KotlinSyntaxHighlighterProviderForDecompiledBuiltIns"/>
     <lang.braceMatcher language="kotlin" implementationClass="org.jetbrains.kotlin.idea.KotlinPairMatcher"/>
     <lang.parserDefinition language="kotlin" implementationClass="org.jetbrains.kotlin.parsing.KotlinParserDefinition"/>
     <lang.commenter language="kotlin" implementationClass="org.jetbrains.kotlin.idea.KotlinCommenter"/>