Add API call that identifies strings that are guaranteed

src/api.cc

Index: src/api.cc
===================================================================
--- src/api.cc	(revision 11074)
+++ src/api.cc	(working copy)
@@ -3694,6 +3694,15 @@
 }
 
 
+bool String::MayContainNonAscii() const {
+  i::Handle<i::String> str = Utils::OpenHandle(this);
+  if (IsDeadCheck(str->GetIsolate(), "v8::String::MayContainNonAscii()")) {
+    return 0;

[fschneider, 2012/03/19 08:46:31]

you mean "return false"?

[Erik Corry, 2012/03/19 09:51:02]

Done.

+  }
+  return !str->HasOnlyAsciiChars();
+}
+
+
 int String::WriteUtf8(char* buffer,
                       int capacity,
                       int* nchars_ref,