[groovy] add transformations bundle

plugins/groovy/groovy-psi/src/org/jetbrains/plugins/groovy/transformations/GroovyTransformationsBundle.kt

@@ -0,0 +1,42 @@
+/*
+ * Copyright 2000-2016 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.
+ */
+
+@file:JvmName(name = "GroovyTransformationsBundle")
+
+package org.jetbrains.plugins.groovy.transformations
+
+import com.intellij.CommonBundle
+import com.intellij.reference.SoftReference
+import org.jetbrains.annotations.PropertyKey
+import java.lang.ref.Reference
+import java.util.*
+
+const val BUNDLE = "org.jetbrains.plugins.groovy.transformations.GroovyTransformationsBundle"
+
+fun message(@PropertyKey(resourceBundle = BUNDLE) key: String, vararg params: Any) = CommonBundle.message(getBundle(), key, *params)
+
+private var ourBundle: Reference<ResourceBundle>? = null
+
+private fun getBundle(): ResourceBundle {
+  var bundle = SoftReference.dereference(ourBundle)
+
+  if (bundle == null) {
+    bundle = ResourceBundle.getBundle(BUNDLE)!!
+    ourBundle = SoftReference<ResourceBundle>(bundle)
+  }
+
+  return bundle
+}