Move FormatStackTrace to C++

src/isolate.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_ISOLATE_H_
 #define V8_ISOLATE_H_
 
 #include <memory>
 #include <queue>
 #include <set>
@@ skipping 108 matching lines @@
     Isolate* __isolate__ = (isolate);                       \
     if (__isolate__->has_scheduled_exception()) {           \
       __isolate__->PromoteScheduledException();             \
       return value;                                         \
     }                                                       \
   } while (false)
 
 #define RETURN_EXCEPTION_IF_SCHEDULED_EXCEPTION(isolate, T) \
   RETURN_VALUE_IF_SCHEDULED_EXCEPTION(isolate, MaybeHandle<T>())
 
+#define RETURN_RESULT(isolate, call, T)           \

[jgruber, 2016/07/29 11:54:37]

This is related to RETURN_RESULT_OR_FAILURE as ASSIGN_RETURN_ON_EXCEPTION is
related to ASSIGN_RETURN_FAILURE_ON_EXCEPTION.

+  do {                                            \
+    Handle<T> __result__;                         \
+    if (!(call).ToHandle(&__result__)) {          \
+      DCHECK((isolate)->has_pending_exception()); \
+      return MaybeHandle<T>();                    \
+    }                                             \
+    return __result__;                            \
+  } while (false)
+
 #define RETURN_RESULT_OR_FAILURE(isolate, call)     \
   do {                                              \
     Handle<Object> __result__;                      \
     Isolate* __isolate__ = (isolate);               \
     if (!(call).ToHandle(&__result__)) {            \
       DCHECK(__isolate__->has_pending_exception()); \
       return __isolate__->heap()->exception();      \
     }                                               \
     return *__result__;                             \
   } while (false)
@@ skipping 1504 matching lines @@
 
   EmbeddedVector<char, 128> filename_;
   FILE* file_;
   int scope_depth_;
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_ISOLATE_H_