real and imag member descriptors

src/runtime/complex.cpp

@@ -222,6 +222,10 @@ void setupComplex() {
 
     complex_cls->giveAttr("__str__", new BoxedFunction(boxRTFunction((void*)complexStr, STR, 1)));
     complex_cls->giveAttr("__repr__", new BoxedFunction(boxRTFunction((void*)complexRepr, STR, 1)));
+    complex_cls->giveAttr("real",
+                          new BoxedMemberDescriptor(BoxedMemberDescriptor::FLOAT, offsetof(BoxedComplex, real)));
+    complex_cls->giveAttr("imag",
+                          new BoxedMemberDescriptor(BoxedMemberDescriptor::FLOAT, offsetof(BoxedComplex, imag)));
     complex_cls->freeze();
 }
 

src/runtime/objmodel.cpp

@@ -842,6 +842,11 @@ Box* dataDescriptorInstanceSpecialCases(GetattrRewriteArgs* rewrite_args, Box* o
                 int rtn = reinterpret_cast<int*>(obj)[member_desc->offset / sizeof(int)];
                 return boxInt(rtn);
             }
+            case BoxedMemberDescriptor::FLOAT: {
+                rewrite_args = NULL;
+                double rtn = reinterpret_cast<double*>(obj)[member_desc->offset / sizeof(double)];
+                return boxFloat(rtn);
+            }
             default:
                 RELEASE_ASSERT(0, "%d", member_desc->type);
         }

src/runtime/types.h

@@ -346,6 +346,7 @@ public:
         BYTE = T_BYTE,
         INT = T_INT,
         OBJECT = T_OBJECT,
+        FLOAT = T_FLOAT,
     } type;
 
     int offset;

test/tests/complex.py

@@ -12,3 +12,6 @@ print 0.5j - 1.5
 print 0.5j * 1.5
 print 0.5j * 1.5
 print 0.5j * 1.5
+
+print (0.5j + 1.5).real
+print (0.5j + 1.5).imag