Add QtV8 library to QtBase

This adds Aaron's copy of V8 to src/3rdparty/v8 (as a
git submodule), and builds it as a "normal" Qt library
(without any dependencies on Qt itself).

The library can be added to a project with

QT += v8-private

V8 API headers are available as private includes, e.g.

 #include <private/v8.h>

The API is private because we're exposing a third-party
API directly, and we don't want to (and cannot) make
source or binary compatibility guarantees for it.

Since we want the V8 public API headers to be private
headers in Qt, syncqt and sync.profile were extended to
understand a new configuration option, the
@allmoduleheadersprivate array, that tells syncqt whether
all the library headers should be treated as private even
though they don't follow the _p.h Qt convention.

The V8 project files, patches and autotests are copied
from the QtDeclarative repository. The next step after
this commit is to remove QtDeclarative's copy of V8 and
link with QtV8 instead.

Task-number: QTBUG-20963
Change-Id: Ib8820362cdbc8fa662a5e97db841656cf38d1b62
Reviewed-on: http://codereview.qt.nokia.com/3092
Reviewed-by: Kent Hansen <kent.hansen@nokia.com>
Reviewed-by: Lars Knoll <lars.knoll@nokia.com>

1 files changed, 63 insertions, 0 deletions

diff --git a/src/v8/0011-QtScript-V8-Add-new-v8-api-to-check-if-a-value-is-an.patch b/src/v8/0011-QtScript-V8-Add-new-v8-api-to-check-if-a-value-is-an.patch
new file mode 100644
index 0000000000..9c0e68352f
--- /dev/null
+++ b/src/v8/0011-QtScript-V8-Add-new-v8-api-to-check-if-a-value-is-an.patch
@@ -0,0 +1,63 @@
+From f22d0312faeb93ced8747d9aae8c6d77e11b4aba 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 11/13] 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.
+---
+ include/v8.h |    5 +++++
+ src/api.cc   |    6 ++++++
+ src/heap.h   |    1 +
+ 3 files changed, 12 insertions(+), 0 deletions(-)
+
+diff --git a/include/v8.h b/include/v8.h
+index 84462b5..08b0ec2 100644
+--- a/include/v8.h
++++ b/include/v8.h
+@@ -937,6 +937,11 @@ 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/api.cc b/src/api.cc
+index 1a585d6..bd435eb 100644
+--- a/src/api.cc
++++ b/src/api.cc
+@@ -2108,6 +2108,12 @@ 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/heap.h b/src/heap.h
+index 8cbf378..db90bb9 100644
+--- a/src/heap.h
++++ b/src/heap.h
+@@ -169,6 +169,7 @@ 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")                                            \
+--
+1.7.2.3
+