[wasm] Set up Table and Memory constructors

src/wasm/wasm-result.h

Index: src/wasm/wasm-result.h
diff --git a/src/wasm/wasm-result.h b/src/wasm/wasm-result.h
index f16c15906dfa896941afa798f26d517984b32a74..efe269a86828ee6b2b498c7ef8e2ed2b582f970a 100644
--- a/src/wasm/wasm-result.h
+++ b/src/wasm/wasm-result.h
@@ -99,31 +99,35 @@ std::ostream& operator<<(std::ostream& os, const ErrorCode& error_code);
 // A helper for generating error messages that bubble up to JS exceptions.
 class ErrorThrower {
  public:
-  ErrorThrower(Isolate* isolate, const char* context)
+  ErrorThrower(i::Isolate* isolate, const char* context)
       : isolate_(isolate), context_(context) {}
   ~ErrorThrower();
 
   PRINTF_FORMAT(2, 3) void Error(const char* fmt, ...);
+  PRINTF_FORMAT(2, 3) void TypeError(const char* fmt, ...);
+  PRINTF_FORMAT(2, 3) void RangeError(const char* fmt, ...);
 
   template <typename T>
   void Failed(const char* error, Result<T>& result) {
     std::ostringstream str;
     str << error << result;
-    return Error("%s", str.str().c_str());
+    Error("%s", str.str().c_str());
   }
 
-  i::Handle<i::String> Reify() {
-    auto result = message_;
-    message_ = i::Handle<i::String>();
+  i::Handle<i::Object> Reify() {
+    i::Handle<i::Object> result = exception_;
+    exception_ = i::Handle<i::Object>::null();
     return result;
   }
 
-  bool error() const { return !message_.is_null(); }
+  bool error() const { return !exception_.is_null(); }
 
  private:
-  Isolate* isolate_;
+  void Format(i::Handle<i::JSFunction> constructor, const char* fmt, va_list);
+
+  i::Isolate* isolate_;
   const char* context_;
-  i::Handle<i::String> message_;
+  i::Handle<i::Object> exception_;
 };
 }  // namespace wasm
 }  // namespace internal