text: //---------------------------------------------------------------------------------------------------------------------------------
  // File: Utility.h
  // Contents: Utility functions used in Microsoft Driver for Node.js for SQL Server
  // 
  // Copyright Microsoft Corporation and contributors
  //
  // Licensed under the Apache License, Version 2.0 (the "License");
  // you may not use this file except in compliance with the License.
  //
  // You may obtain a copy of the License at:
  // http://www.apache.org/licenses/LICENSE-2.0
  //
  // Unless required by applicable law or agreed to in writing, software
  // distributed under the License is distributed on an "AS IS" BASIS,
  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  // See the License for the specific language governing permissions and
  // limitations under the License.
  //---------------------------------------------------------------------------------------------------------------------------------
  
  #pragma once
  #include <v8.h>
  #include <sstream>
  #include <map>
  #include <mutex>
  #include <ctime>
  
  namespace mssql
  {
      using namespace std;
      using namespace v8;
  
  	vector<SQLWCHAR> wstr2wcvec(const wstring & s);
  	vector<SQLWCHAR> str2wcvec(const string & cs);
  	string swcvec2str(vector<SQLWCHAR> &v, size_t l);
      string w2sqlc(const wstring & s);
  	wstring s2ws(const string & s);
      wstring FromV8String(Local<String> input);
  	void encode_numeric_struct(double v, int precision, int upscale_limit, SQL_NUMERIC_STRUCT & numeric);
  
      struct nodeTypeFactory
      {
  	   static const int64_t NANOSECONDS_PER_MS = 1000000;
  
  	   Isolate *isolate;
  
  	   nodeTypeFactory();
  	   Local<Integer> new_long(int64_t i) const;
  	   Local<Integer> new_int32(int32_t i) const;
  	   Local<Number> new_int64(int64_t i) const;
  	   Local<Value> new_number() const;
  	   Local<String> new_string(const char *cstr) const;
  	   Local<String> new_string(const char *cstr, int size) const;
  	   Local<Array> new_array() const;
  	   Local<Array> new_array(int count) const;
  	   Local<Value> new_buffer(int size) const;
  	   Local<Object> error(const stringstream &full_error) const;
  	   Local<Object> error(const char* full_error) const;
  	   Local<Value> new_date() const;
  	   Local<Value> new_date(double milliseconds, int32_t nanoseconds_delta) const;
  	   Local<Value> global() const;
  	   Local<Primitive> null() const;
  	   Local<Primitive> undefined() const;
  	   void throwError(const char * err) const;
  	};
  }
  