Add Cast() for Int32 and Uint32

src/api.cc

 // 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.
 
 #include "src/api.h"
 
 #include <string.h>  // For memcpy, strlen.
 #ifdef V8_USE_ADDRESS_SANITIZER
 #include <sanitizer/asan_interface.h>
 #endif  // V8_USE_ADDRESS_SANITIZER
@@ skipping 2955 matching lines @@
 
 
 void v8::Integer::CheckCast(v8::Value* that) {
   i::Handle<i::Object> obj = Utils::OpenHandle(that);
   Utils::ApiCheck(obj->IsNumber(),
                   "v8::Integer::Cast()",
                   "Could not convert to number");
 }
 
 
+void v8::Int32::CheckCast(v8::Value* that) {
+  Utils::ApiCheck(that->IsInt32(), "v8::Int32::Cast()",
+                  "Could not convert to 32-bit signed integer");
+}
+
+
+void v8::Uint32::CheckCast(v8::Value* that) {
+  Utils::ApiCheck(that->IsUint32(), "v8::Uint32::Cast()",
+                  "Could not convert to 32-bit unsigned integer");
+}
+
+
 void v8::Array::CheckCast(Value* that) {
   i::Handle<i::Object> obj = Utils::OpenHandle(that);
   Utils::ApiCheck(obj->IsJSArray(),
                   "v8::Array::Cast()",
                   "Could not convert to array");
 }
 
 
 void v8::Promise::CheckCast(Value* that) {
   Utils::ApiCheck(that->IsPromise(),
@@ skipping 4990 matching lines @@
   Isolate* isolate = reinterpret_cast<Isolate*>(info.GetIsolate());
   Address callback_address =
       reinterpret_cast<Address>(reinterpret_cast<intptr_t>(callback));
   VMState<EXTERNAL> state(isolate);
   ExternalCallbackScope call_scope(isolate, callback_address);
   callback(info);
 }
 
 
 } }  // namespace v8::internal