From 574577fe730721929b7fbd5cf71166ade619817b Mon Sep 17 00:00:00 2001
From: Anna Kozlova <anna.kozlova@jetbrains.com>
Date: Wed, 14 Jan 2015 18:27:57 +0100
Subject: [PATCH] introduce functional parameter: do not fold as functional
 interface creation would be in the place where local vars are not available

---
 .../IntroduceParameterHandler.java            |  5 ++++
 .../afterEnsureNotFolded.java                 | 27 +++++++++++++++++++
 .../beforeEnsureNotFolded.java                | 20 ++++++++++++++
 .../IntroduceFunctionalParameterTest.java     |  4 +++
 4 files changed, 56 insertions(+)
 create mode 100644 java/java-tests/testData/refactoring/introduceFunctionalParameter/afterEnsureNotFolded.java
 create mode 100644 java/java-tests/testData/refactoring/introduceFunctionalParameter/beforeEnsureNotFolded.java

diff --git a/java/java-impl/src/com/intellij/refactoring/introduceParameter/IntroduceParameterHandler.java b/java/java-impl/src/com/intellij/refactoring/introduceParameter/IntroduceParameterHandler.java
index ec7fe89d622a..ba60d3378e85 100644
--- a/java/java-impl/src/com/intellij/refactoring/introduceParameter/IntroduceParameterHandler.java
+++ b/java/java-impl/src/com/intellij/refactoring/introduceParameter/IntroduceParameterHandler.java
@@ -704,6 +704,11 @@ public class IntroduceParameterHandler extends IntroduceHandlerBase {
       return false;
     }
 
+    @Override
+    protected boolean isFoldingApplicable() {
+      return false;
+    }
+
     @Override
     public boolean prepare(@Nullable Pass<ExtractMethodProcessor> pass) throws PrepareFailedException {
       final boolean prepare = super.prepare(pass);
diff --git a/java/java-tests/testData/refactoring/introduceFunctionalParameter/afterEnsureNotFolded.java b/java/java-tests/testData/refactoring/introduceFunctionalParameter/afterEnsureNotFolded.java
new file mode 100644
index 000000000000..b993040d6bd8
--- /dev/null
+++ b/java/java-tests/testData/refactoring/introduceFunctionalParameter/afterEnsureNotFolded.java
@@ -0,0 +1,27 @@
+import java.util.function.Function;
+
+class Test {
+
+  {
+      final int[] equals = new int[0];
+      performTest(new Function<String[],String[]>() {
+          public String[] apply(String[] fields) {
+              System.out.println();
+              return getIndexed(fields, equals);
+          }
+      });
+  }
+
+  private static void performTest(Function<String[], String[]> anObject) {
+      String[] fields = new String[0];
+
+      final String[] indexed = anObject.apply(fields);
+
+      System.out.println(indexed);
+  }
+
+  private static String[] getIndexed(String[] fields, int[] indices) {
+    return new String[indices.length];
+  }
+
+}
\ No newline at end of file
diff --git a/java/java-tests/testData/refactoring/introduceFunctionalParameter/beforeEnsureNotFolded.java b/java/java-tests/testData/refactoring/introduceFunctionalParameter/beforeEnsureNotFolded.java
new file mode 100644
index 000000000000..bf6583dd6d98
--- /dev/null
+++ b/java/java-tests/testData/refactoring/introduceFunctionalParameter/beforeEnsureNotFolded.java
@@ -0,0 +1,20 @@
+class Test {
+
+  {
+    performTest(new int[0]);
+  }
+
+  private static void performTest(int[] equals) {
+    String[] fields = new String[0];
+
+    <selection>System.out.println();
+    final String[] indexed = getIndexed(fields, equals);</selection>
+
+    System.out.println(indexed);
+  }
+
+  private static String[] getIndexed(String[] fields, int[] indices) {
+    return new String[indices.length];
+  }
+
+}
\ No newline at end of file
diff --git a/java/java-tests/testSrc/com/intellij/refactoring/IntroduceFunctionalParameterTest.java b/java/java-tests/testSrc/com/intellij/refactoring/IntroduceFunctionalParameterTest.java
index 31c26e2ae2cd..2f9702d095e1 100644
--- a/java/java-tests/testSrc/com/intellij/refactoring/IntroduceFunctionalParameterTest.java
+++ b/java/java-tests/testSrc/com/intellij/refactoring/IntroduceFunctionalParameterTest.java
@@ -53,6 +53,10 @@ public class IntroduceFunctionalParameterTest extends LightRefactoringTestCase
     doTest();
   }
 
+  public void testEnsureNotFolded() throws Exception {
+    doTest();
+  }
+
   @NotNull
   @Override
   protected String getTestDataPath() {