Don't break empty lambda bodies

cushon · cushon · commit 64d97b4aeb1a · 2016-11-14T14:42:59.000-08:00
MOE_MIGRATED_REVID=138652384
diff --git a/core/src/main/java/com/google/googlejavaformat/java/JavaInputAstVisitor.java b/core/src/main/java/com/google/googlejavaformat/java/JavaInputAstVisitor.java
@@ -1168,7 +1168,15 @@ public Void visitLambdaExpression(LambdaExpressionTree node, Void unused) {
     } else {
       builder.breakOp(" ");
     }
-    scan(node.getBody(), null);
+    if (node.getBody().getKind() == Tree.Kind.BLOCK) {
+      visitBlock(
+          (BlockTree) node.getBody(),
+          CollapseEmptyOrNot.YES,
+          AllowLeadingBlankLine.NO,
+          AllowTrailingBlankLine.NO);
+    } else {
+      scan(node.getBody(), null);
+    }
     builder.close();
     return null;
   }
diff --git a/core/src/test/resources/com/google/googlejavaformat/java/testdata/B32729600.input b/core/src/test/resources/com/google/googlejavaformat/java/testdata/B32729600.input
@@ -0,0 +1,5 @@
+class B32729600 {
+  {
+    f(() -> {});
+  }
+}
diff --git a/core/src/test/resources/com/google/googlejavaformat/java/testdata/B32729600.output b/core/src/test/resources/com/google/googlejavaformat/java/testdata/B32729600.output
@@ -0,0 +1,5 @@
+class B32729600 {
+  {
+    f(() -> {});
+  }
+}

-Original file line number
+Diff line change
@@ @@ -0,0 +1,5 @@ @@
 +class B32729600 {
 +  {
 +    f(() -> {});
 +  }
 +}