Add Blob API

test/cctest/test-api.cc

 // Copyright 2007-2009 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 1386 matching lines @@
   char_ptr = reinterpret_cast<char*>(v8::External::Unwrap(one));
   CHECK_EQ('1', *char_ptr);
   char_ptr = reinterpret_cast<char*>(v8::External::Unwrap(two));
   CHECK_EQ('2', *char_ptr);
   char_ptr = reinterpret_cast<char*>(v8::External::Unwrap(three));
   CHECK_EQ('3', *char_ptr);
   i::DeleteArray(data);
 }
 
 
+THREADED_TEST(Blob) {
+  v8::HandleScope scope;
+  Local<v8::Blob> blob = v8::Blob::New(3);
+  blob->SetByte(0, 10);
+  blob->SetByte(1, 11);
+  blob->SetByte(2, 12);
+  LocalContext env;
+  env->Global()->Set(v8_str("blob"), blob);

[Christian Plesner Hansen, 2009/11/16 12:12:22]

Like externals it is not safe to expose blobs directly to JavaScript code.  You
have to wrap it as an internal field of a v8::Object.

+  Local<Value> reblob_obj = Script::Compile(v8_str("this.blob"))->Run();
+  v8::Handle<v8::Blob> reblob = v8::Handle<v8::Blob>::Cast(reblob_obj);
+  int count = reblob->ByteCount();
+  CHECK_EQ(3, count);
+
+  uint8_t b = reblob->GetByte(0);
+  CHECK_EQ(10, b);
+
+  b = reblob->GetByte(1);
+  CHECK_EQ(11, b);
+
+  b = reblob->GetByte(2);
+  CHECK_EQ(12, b);
+
+  uint8_t *p = reblob->GetAddress();
+  CHECK_EQ(10, p[0]);
+  CHECK_EQ(11, p[1]);
+  CHECK_EQ(12, p[2]);
+
+  p[2] = 52;
+  b = reblob->GetByte(2);
+  CHECK_EQ(52, b);
+}
+
+
 THREADED_TEST(GlobalHandle) {
   v8::Persistent<String> global;
   {
     v8::HandleScope scope;
     Local<String> str = v8_str("str");
     global = v8::Persistent<String>::New(str);
   }
   CHECK_EQ(global->Length(), 3);
   global.Dispose();
 }
@@ skipping 6951 matching lines @@
       "      i++;"
       "      return s(o);"
       "    }"
       "  }"
       "};"
       "s(o);");
   CHECK(try_catch.HasCaught());
   v8::String::Utf8Value value(try_catch.Exception());
   CHECK_EQ(0, strcmp(*value, "Hey!"));
 }