Fixes #2502 -- improper compilation with parenthesized inner value of instance properties in a class body.

Author: jashkenas

lib/coffee-script/nodes.js

@@ -908,12 +908,15 @@ exports.Class = class Class extends Base
   # Walk the body of the class, looking for prototype properties to be converted.
   walkBody: (name, o) ->
     @traverseChildren false, (child) =>
+      cont = true
       return false if child instanceof Class
       if child instanceof Block
         for node, i in exps = child.expressions
           if node instanceof Value and node.isObject(true)
+            cont = false
             exps[i] = @addProperties node, name, o
         child.expressions = exps = flatten exps
+      cont and child not instanceof Class
 
   # `use strict` (and other directives) must be the first expression statement(s)
   # of a function body. This method ensures the prologue is correctly positioned

src/nodes.coffee

@@ -312,7 +312,7 @@ test "classes with value'd constructors", ->
   eq (new Two).value, 2
 
 
-test "exectuable class bodies", ->
+test "executable class bodies", ->
 
   class A
     if true
@@ -326,6 +326,17 @@ test "exectuable class bodies", ->
   eq a.c, undefined
 
 
+test "#2502: parenthesizing inner object values", ->
+
+  class A
+    category:  (type: 'string')
+    sections:  (type: 'number', default: 0)
+
+  eq (new A).category.type, 'string'
+
+  eq (new A).sections.default, 0
+
+
 test "mild metaprogramming", ->
 
   class Base