show lambdas in File Structure (IDEA-151616; IDEA-157809; IDEA-151429)

java/java-impl/src/com/intellij/codeInsight/hint/LambdaDeclarationRangeHandler.java

@@ -0,0 +1,30 @@
+/*
+ * 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.
+ */
+package com.intellij.codeInsight.hint;
+
+import com.intellij.openapi.util.TextRange;
+import com.intellij.psi.PsiElement;
+import com.intellij.psi.PsiLambdaExpression;
+import org.jetbrains.annotations.NotNull;
+
+public class LambdaDeclarationRangeHandler implements DeclarationRangeHandler {
+  @Override
+  @NotNull
+  public TextRange getDeclarationRange(@NotNull final PsiElement container) {
+    final PsiLambdaExpression lambdaExpression = (PsiLambdaExpression)container;
+    return lambdaExpression.getParameterList().getTextRange();
+  }
+}