From 105a164423d66ac14e0cd686fe4a7d2154bd66bb Mon Sep 17 00:00:00 2001
From: Christopher Chedeau <vjeuxx@gmail.com>
Date: Sun, 22 Jan 2017 16:22:49 -0800
Subject: [PATCH] Add parenthesis around class expression when left side of
 call expression (#409)

Fixes #402
---
 src/fast-path.js                               | 4 ++++
 tests/classes/__snapshots__/jsfmt.spec.js.snap | 7 +++++++
 tests/classes/call.js                          | 1 +
 3 files changed, 12 insertions(+)
 create mode 100644 tests/classes/call.js

diff --git a/src/fast-path.js b/src/fast-path.js
index d95a1c8c7..da77d6ee2 100644
--- a/src/fast-path.js
+++ b/src/fast-path.js
@@ -434,6 +434,10 @@ FPp.needsParens = function(assumeExpressionContext) {
         case "ExportDefaultDeclaration":
         case "ExpressionStatement":
           return true;
+        case "CallExpression":
+          if (parent.callee === node) {
+            return true;
+          }
       }
 
       return false;
diff --git a/tests/classes/__snapshots__/jsfmt.spec.js.snap b/tests/classes/__snapshots__/jsfmt.spec.js.snap
index d2de13bf1..0a7f5ef2d 100644
--- a/tests/classes/__snapshots__/jsfmt.spec.js.snap
+++ b/tests/classes/__snapshots__/jsfmt.spec.js.snap
@@ -87,6 +87,13 @@ exports[`test binary.js 1`] = `
 "
 `;
 
+exports[`test call.js 1`] = `
+"(class {})(class {});
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+(class {})(class {});
+"
+`;
+
 exports[`test class_shapes.js 1`] = `
 "/* @flow */
 
diff --git a/tests/classes/call.js b/tests/classes/call.js
new file mode 100644
index 000000000..d530fa291
--- /dev/null
+++ b/tests/classes/call.js
@@ -0,0 +1 @@
+(class {})(class {});