From be32caa7a1e50bc9fd6fb370138c6f64a8fb8763 Mon Sep 17 00:00:00 2001
From: Jedrzej Nowacki <jedrzej.nowacki@nokia.com>
Date: Tue, 7 Dec 2010 11:56:42 +0100
Subject: [PATCH] [V8] QtScript/V8: Add new v8 api to check if a value is an
 error.

New function v8::Value::IsError was created.

This API is experimental and added only for the purposes of our
research.

Change-Id: I8f20d46bd81b18bcd7a7c2f7cfc25775d82a6834
Reviewed-by: Simon Hausmann <simon.hausmann@nokia.com>
---
 src/3rdparty/v8/include/v8.h | 5 +++++
 src/3rdparty/v8/src/api.cc   | 6 ++++++
 src/3rdparty/v8/src/heap.h   | 1 +
 3 files changed, 12 insertions(+)

diff --git a/src/3rdparty/v8/include/v8.h b/src/3rdparty/v8/include/v8.h
index 229ddbd..d995e54 100644
--- a/src/3rdparty/v8/include/v8.h
+++ b/src/3rdparty/v8/include/v8.h
@@ -967,6 +967,11 @@ class Value : public Data {
    */
   V8EXPORT bool IsRegExp() const;
 
+  /**
+   * Returns true if this value is an Error.
+   */
+  V8EXPORT bool IsError() const;
+
   V8EXPORT Local<Boolean> ToBoolean() const;
   V8EXPORT Local<Number> ToNumber() const;
   V8EXPORT Local<String> ToString() const;
diff --git a/src/3rdparty/v8/src/api.cc b/src/3rdparty/v8/src/api.cc
index d31ff9a..9f42ff9 100644
--- a/src/3rdparty/v8/src/api.cc
+++ b/src/3rdparty/v8/src/api.cc
@@ -2316,6 +2316,12 @@ bool Value::IsRegExp() const {
   return obj->IsJSRegExp();
 }
 
+bool Value::IsError() const {
+  if (IsDeadCheck(i::Isolate::Current(), "v8::Value::IsError()")) return false;
+  i::Handle<i::Object> obj = Utils::OpenHandle(this);
+  return obj->HasSpecificClassOf(HEAP->Error_symbol());
+}
+
 
 Local<String> Value::ToString() const {
   i::Handle<i::Object> obj = Utils::OpenHandle(this);
diff --git a/src/3rdparty/v8/src/heap.h b/src/3rdparty/v8/src/heap.h
index 5e90964..6166cde 100644
--- a/src/3rdparty/v8/src/heap.h
+++ b/src/3rdparty/v8/src/heap.h
@@ -190,6 +190,7 @@ inline Heap* _inline_get_heap_();
   V(string_symbol, "string")                                             \
   V(String_symbol, "String")                                             \
   V(Date_symbol, "Date")                                                 \
+  V(Error_symbol, "Error")                                               \
   V(this_symbol, "this")                                                 \
   V(to_string_symbol, "toString")                                        \
   V(char_at_symbol, "CharAt")                                            \
-- 
2.7.4