Remove FXJSE_Value_ToObject and call methods directly

xfa/fxfa/fm2js/xfa_fm2jscontext.cpp

 // Copyright 2014 PDFium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
 #include "xfa/fxfa/fm2js/xfa_fm2jscontext.h"
 
 #include <time.h>
 
@@ skipping 476 matching lines @@
       }
     }
     iIndex++;
   }
   if (patternType == XFA_VT_NULL) {
     patternType = XFA_VT_TEXT | XFA_VT_FLOAT;
   }
   return false;
 }
 
+CXFA_FM2JSContext* ToJSContext(CFXJSE_Value* pValue, CFXJSE_Class* pClass) {
+  return static_cast<CXFA_FM2JSContext*>(pValue->ToHostObject(pClass));
+}
+
 }  // namespace
 
 // static
 void CXFA_FM2JSContext::Abs(CFXJSE_Value* pThis,
                             const CFX_ByteStringC& szFuncName,
                             CFXJSE_Arguments& args) {
   if (args.GetLength() != 1) {
-    CXFA_FM2JSContext* pContext =
-        static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
-    pContext->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"Abs");
+    ToJSContext(pThis, nullptr)
+        ->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"Abs");
     return;
   }
 
   std::unique_ptr<CFXJSE_Value> argOne = args.GetValue(0);
   if (ValueIsNull(pThis, argOne.get())) {
     FXJSE_Value_SetNull(args.GetReturnValue());
     return;
   }
 
   FX_DOUBLE dValue = ValueToDouble(pThis, argOne.get());
   if (dValue < 0)
     dValue = -dValue;
 
   FXJSE_Value_SetDouble(args.GetReturnValue(), dValue);
 }
 
 // static
 void CXFA_FM2JSContext::Avg(CFXJSE_Value* pThis,
                             const CFX_ByteStringC& szFuncName,
                             CFXJSE_Arguments& args) {
   int32_t argc = args.GetLength();
   if (argc < 1) {
     FXJSE_Value_SetNull(args.GetReturnValue());
     return;
   }
 
-  CXFA_FM2JSContext* pContext =
-      static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
-  v8::Isolate* pIsolate = pContext->GetScriptRuntime();
+  v8::Isolate* pIsolate = ToJSContext(pThis, nullptr)->GetScriptRuntime();
   uint32_t uCount = 0;
   FX_DOUBLE dSum = 0.0;
   for (int32_t i = 0; i < argc; i++) {
     std::unique_ptr<CFXJSE_Value> argValue = args.GetValue(i);
     if (FXJSE_Value_IsNull(argValue.get()))
       continue;
 
     if (!FXJSE_Value_IsArray(argValue.get())) {
       dSum += ValueToDouble(pThis, argValue.get());
       uCount++;
@@ skipping 48 matching lines @@
   }
 
   FXJSE_Value_SetDouble(args.GetReturnValue(), dSum / uCount);
 }
 
 // static
 void CXFA_FM2JSContext::Ceil(CFXJSE_Value* pThis,
                              const CFX_ByteStringC& szFuncName,
                              CFXJSE_Arguments& args) {
   if (args.GetLength() != 1) {
-    CXFA_FM2JSContext* pContext =
-        static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
-    pContext->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"Ceil");
+    ToJSContext(pThis, nullptr)
+        ->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"Ceil");
     return;
   }
 
   std::unique_ptr<CFXJSE_Value> argValue = GetSimpleValue(pThis, args, 0);
   if (ValueIsNull(pThis, argValue.get())) {
     FXJSE_Value_SetNull(args.GetReturnValue());
     return;
   }
 
   FXJSE_Value_SetFloat(args.GetReturnValue(),
                        FXSYS_ceil(ValueToFloat(pThis, argValue.get())));
 }
 
 // static
 void CXFA_FM2JSContext::Count(CFXJSE_Value* pThis,
                               const CFX_ByteStringC& szFuncName,
                               CFXJSE_Arguments& args) {
-  CXFA_FM2JSContext* pContext =
-      static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
+  CXFA_FM2JSContext* pContext = ToJSContext(pThis, nullptr);
   v8::Isolate* pIsolate = pContext->GetScriptRuntime();
   int32_t iCount = 0;
   for (int32_t i = 0; i < args.GetLength(); i++) {
     std::unique_ptr<CFXJSE_Value> argValue = args.GetValue(i);
     if (FXJSE_Value_IsNull(argValue.get()))
       continue;
 
     if (FXJSE_Value_IsArray(argValue.get())) {
       std::unique_ptr<CFXJSE_Value> lengthValue(new CFXJSE_Value(pIsolate));
       FXJSE_Value_GetObjectProp(argValue.get(), "length", lengthValue.get());
@@ skipping 41 matching lines @@
     }
   }
   FXJSE_Value_SetInteger(args.GetReturnValue(), iCount);
 }
 
 // static
 void CXFA_FM2JSContext::Floor(CFXJSE_Value* pThis,
                               const CFX_ByteStringC& szFuncName,
                               CFXJSE_Arguments& args) {
   if (args.GetLength() != 1) {
-    CXFA_FM2JSContext* pContext =
-        static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
-    pContext->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"Floor");
+    ToJSContext(pThis, nullptr)
+        ->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"Floor");
     return;
   }
 
   std::unique_ptr<CFXJSE_Value> argValue = GetSimpleValue(pThis, args, 0);
   if (ValueIsNull(pThis, argValue.get())) {
     FXJSE_Value_SetNull(args.GetReturnValue());
     return;
   }
 
   FXJSE_Value_SetFloat(args.GetReturnValue(),
                        FXSYS_floor(ValueToFloat(pThis, argValue.get())));
 }
 
 // static
 void CXFA_FM2JSContext::Max(CFXJSE_Value* pThis,
                             const CFX_ByteStringC& szFuncName,
                             CFXJSE_Arguments& args) {
-  CXFA_FM2JSContext* pContext =
-      static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
+  CXFA_FM2JSContext* pContext = ToJSContext(pThis, nullptr);
   v8::Isolate* pIsolate = pContext->GetScriptRuntime();
   uint32_t uCount = 0;
   FX_DOUBLE dMaxValue = 0.0;
   for (int32_t i = 0; i < args.GetLength(); i++) {
     std::unique_ptr<CFXJSE_Value> argValue = args.GetValue(i);
     if (FXJSE_Value_IsNull(argValue.get()))
       continue;
 
     if (FXJSE_Value_IsArray(argValue.get())) {
       std::unique_ptr<CFXJSE_Value> lengthValue(new CFXJSE_Value(pIsolate));
@@ skipping 60 matching lines @@
     return;
   }
 
   FXJSE_Value_SetDouble(args.GetReturnValue(), dMaxValue);
 }
 
 // static
 void CXFA_FM2JSContext::Min(CFXJSE_Value* pThis,
                             const CFX_ByteStringC& szFuncName,
                             CFXJSE_Arguments& args) {
-  CXFA_FM2JSContext* pContext =
-      static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
+  CXFA_FM2JSContext* pContext = ToJSContext(pThis, nullptr);
   v8::Isolate* pIsolate = pContext->GetScriptRuntime();
   uint32_t uCount = 0;
   FX_DOUBLE dMinValue = 0.0;
   for (int32_t i = 0; i < args.GetLength(); i++) {
     std::unique_ptr<CFXJSE_Value> argValue = args.GetValue(i);
     if (FXJSE_Value_IsNull(argValue.get()))
       continue;
 
     if (FXJSE_Value_IsArray(argValue.get())) {
       std::unique_ptr<CFXJSE_Value> lengthValue(new CFXJSE_Value(pIsolate));
@@ skipping 60 matching lines @@
     return;
   }
 
   FXJSE_Value_SetDouble(args.GetReturnValue(), dMinValue);
 }
 
 // static
 void CXFA_FM2JSContext::Mod(CFXJSE_Value* pThis,
                             const CFX_ByteStringC& szFuncName,
                             CFXJSE_Arguments& args) {
-  CXFA_FM2JSContext* pContext =
-      static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
+  CXFA_FM2JSContext* pContext = ToJSContext(pThis, nullptr);
   if (args.GetLength() != 2) {
     pContext->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"Mod");
     return;
   }
 
   std::unique_ptr<CFXJSE_Value> argOne = args.GetValue(0);
   std::unique_ptr<CFXJSE_Value> argTwo = args.GetValue(1);
   if (FXJSE_Value_IsNull(argOne.get()) || FXJSE_Value_IsNull(argTwo.get())) {
     FXJSE_Value_SetNull(args.GetReturnValue());
     return;
@@ skipping 14 matching lines @@
   }
 
   FXJSE_Value_SetDouble(args.GetReturnValue(),
                         dDividend - dDivisor * (int32_t)(dDividend / dDivisor));
 }
 
 // static
 void CXFA_FM2JSContext::Round(CFXJSE_Value* pThis,
                               const CFX_ByteStringC& szFuncName,
                               CFXJSE_Arguments& args) {
-  CXFA_FM2JSContext* pContext =
-      static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
+  CXFA_FM2JSContext* pContext = ToJSContext(pThis, nullptr);
   int32_t argc = args.GetLength();
   if (argc != 1 && argc != 2) {
     pContext->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"Round");
     return;
   }
 
   std::unique_ptr<CFXJSE_Value> argOne = args.GetValue(0);
   if (FXJSE_Value_IsNull(argOne.get())) {
     FXJSE_Value_SetNull(args.GetReturnValue());
     return;
@@ skipping 34 matching lines @@
 // static
 void CXFA_FM2JSContext::Sum(CFXJSE_Value* pThis,
                             const CFX_ByteStringC& szFuncName,
                             CFXJSE_Arguments& args) {
   int32_t argc = args.GetLength();
   if (argc == 0) {
     FXJSE_Value_SetNull(args.GetReturnValue());
     return;
   }
 
-  CXFA_FM2JSContext* pContext =
-      static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
+  CXFA_FM2JSContext* pContext = ToJSContext(pThis, nullptr);
   v8::Isolate* pIsolate = pContext->GetScriptRuntime();
   uint32_t uCount = 0;
   FX_DOUBLE dSum = 0.0;
   for (int32_t i = 0; i < argc; i++) {
     std::unique_ptr<CFXJSE_Value> argValue = args.GetValue(i);
     if (FXJSE_Value_IsNull(argValue.get()))
       continue;
 
     if (FXJSE_Value_IsArray(argValue.get())) {
       std::unique_ptr<CFXJSE_Value> lengthValue(new CFXJSE_Value(pIsolate));
@@ skipping 56 matching lines @@
   }
 
   FXJSE_Value_SetDouble(args.GetReturnValue(), dSum);
 }
 
 // static
 void CXFA_FM2JSContext::Date(CFXJSE_Value* pThis,
                              const CFX_ByteStringC& szFuncName,
                              CFXJSE_Arguments& args) {
   if (args.GetLength() != 0) {
-    CXFA_FM2JSContext* pContext =
-        static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
-    pContext->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"Date");
+    ToJSContext(pThis, nullptr)
+        ->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"Date");
     return;
   }
 
   time_t currentTime;
   time(&currentTime);
   struct tm* pTmStruct = gmtime(&currentTime);
 
   CFX_ByteString bufferYear;
   CFX_ByteString bufferMon;
   CFX_ByteString bufferDay;
   bufferYear.Format("%d", pTmStruct->tm_year + 1900);
   bufferMon.Format("%02d", pTmStruct->tm_mon + 1);
   bufferDay.Format("%02d", pTmStruct->tm_mday);
 
   CFX_ByteString bufferCurrent = bufferYear + bufferMon + bufferDay;
   FXJSE_Value_SetInteger(args.GetReturnValue(),
                          DateString2Num(bufferCurrent.AsStringC()));
 }
 
 // static
 void CXFA_FM2JSContext::Date2Num(CFXJSE_Value* pThis,
                                  const CFX_ByteStringC& szFuncName,
                                  CFXJSE_Arguments& args) {
   int32_t argc = args.GetLength();
   if (argc <= 0 || argc >= 4) {
-    CXFA_FM2JSContext* pContext =
-        static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
-    pContext->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"Date2Num");
+    ToJSContext(pThis, nullptr)
+        ->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"Date2Num");
     return;
   }
 
   std::unique_ptr<CFXJSE_Value> dateValue = GetSimpleValue(pThis, args, 0);
   if (ValueIsNull(pThis, dateValue.get())) {
     FXJSE_Value_SetNull(args.GetReturnValue());
     return;
   }
 
   CFX_ByteString dateString;
@@ skipping 29 matching lines @@
   FXJSE_Value_SetInteger(args.GetReturnValue(),
                          DateString2Num(szIsoDateString.AsStringC()));
 }
 
 // static
 void CXFA_FM2JSContext::DateFmt(CFXJSE_Value* pThis,
                                 const CFX_ByteStringC& szFuncName,
                                 CFXJSE_Arguments& args) {
   int32_t argc = args.GetLength();
   if (argc >= 3) {
-    CXFA_FM2JSContext* pContext =
-        static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
-    pContext->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"Date2Num");
+    ToJSContext(pThis, nullptr)
+        ->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"Date2Num");
     return;
   }
 
   int32_t iStyle = 0;
   if (argc > 0) {
     std::unique_ptr<CFXJSE_Value> argStyle = GetSimpleValue(pThis, args, 0);
     if (FXJSE_Value_IsNull(argStyle.get())) {
       FXJSE_Value_SetNull(args.GetReturnValue());
       return;
     }
@@ skipping 16 matching lines @@
   CFX_ByteString formatStr;
   GetStandardDateFormat(pThis, iStyle, szLocal.AsStringC(), formatStr);
   FXJSE_Value_SetUTF8String(args.GetReturnValue(), formatStr.AsStringC());
 }
 
 // static
 void CXFA_FM2JSContext::IsoDate2Num(CFXJSE_Value* pThis,
                                     const CFX_ByteStringC& szFuncName,
                                     CFXJSE_Arguments& args) {
   if (args.GetLength() != 1) {
-    CXFA_FM2JSContext* pContext =
-        static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
-    pContext->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD,
-                             L"IsoDate2Num");
+    ToJSContext(pThis, nullptr)
+        ->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"IsoDate2Num");
     return;
   }
 
   std::unique_ptr<CFXJSE_Value> argOne = GetSimpleValue(pThis, args, 0);
   if (FXJSE_Value_IsNull(argOne.get())) {
     FXJSE_Value_SetNull(args.GetReturnValue());
     return;
   }
 
   CFX_ByteString szArgString;
   ValueToUTF8String(argOne.get(), szArgString);
   FXJSE_Value_SetInteger(args.GetReturnValue(),
                          DateString2Num(szArgString.AsStringC()));
 }
 
 // static
 void CXFA_FM2JSContext::IsoTime2Num(CFXJSE_Value* pThis,
                                     const CFX_ByteStringC& szFuncName,
                                     CFXJSE_Arguments& args) {
-  CXFA_FM2JSContext* pContext =
-      static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
+  CXFA_FM2JSContext* pContext = ToJSContext(pThis, nullptr);
   if (args.GetLength() != 1) {
     pContext->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD,
                              L"IsoTime2Num");
     return;
   }
 
   std::unique_ptr<CFXJSE_Value> argOne = GetSimpleValue(pThis, args, 0);
   if (ValueIsNull(pThis, argOne.get())) {
     FXJSE_Value_SetNull(args.GetReturnValue());
     return;
@@ skipping 72 matching lines @@
       CFX_ByteString formatStr;
       GetLocalDateFormat(pThis, iStyle, szLocal.AsStringC(), formatStr, FALSE);
       if (formatStr.IsEmpty()) {
         formatStr = "";
       }
       FXJSE_Value_SetUTF8String(args.GetReturnValue(), formatStr.AsStringC());
     } else {
       FXJSE_Value_SetNull(args.GetReturnValue());
     }
   } else {
-    CXFA_FM2JSContext* pContext =
-        static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
-    pContext->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD,
-                             L"LocalDateFmt");
+    ToJSContext(pThis, nullptr)
+        ->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"LocalDateFmt");
   }
 }
 
 // static
 void CXFA_FM2JSContext::LocalTimeFmt(CFXJSE_Value* pThis,
                                      const CFX_ByteStringC& szFuncName,
                                      CFXJSE_Arguments& args) {
   int32_t argc = args.GetLength();
   if (argc < 3) {
     FX_BOOL bFlags = FALSE;
@@ skipping 21 matching lines @@
       CFX_ByteString formatStr;
       GetLocalTimeFormat(pThis, iStyle, szLocal.AsStringC(), formatStr, FALSE);
       if (formatStr.IsEmpty()) {
         formatStr = "";
       }
       FXJSE_Value_SetUTF8String(args.GetReturnValue(), formatStr.AsStringC());
     } else {
       FXJSE_Value_SetNull(args.GetReturnValue());
     }
   } else {
-    CXFA_FM2JSContext* pContext =
-        static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
-    pContext->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD,
-                             L"LocalTimeFmt");
+    ToJSContext(pThis, nullptr)
+        ->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"LocalTimeFmt");
   }
 }
 
 // static
 void CXFA_FM2JSContext::Num2Date(CFXJSE_Value* pThis,
                                  const CFX_ByteStringC& szFuncName,
                                  CFXJSE_Arguments& args) {
   int32_t argc = args.GetLength();
   if ((argc > 0) && (argc < 4)) {
     FX_BOOL bFlags = FALSE;
@@ skipping 125 matching lines @@
                     szLocalDateString);
       if (szLocalDateString.IsEmpty()) {
         szLocalDateString = "";
       }
       FXJSE_Value_SetUTF8String(args.GetReturnValue(),
                                 szLocalDateString.AsStringC());
     } else {
       FXJSE_Value_SetNull(args.GetReturnValue());
     }
   } else {
-    CXFA_FM2JSContext* pContext =
-        static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
-    pContext->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"Num2Date");
+    ToJSContext(pThis, nullptr)
+        ->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"Num2Date");
   }
 }
 
 // static
 void CXFA_FM2JSContext::Num2GMTime(CFXJSE_Value* pThis,
                                    const CFX_ByteStringC& szFuncName,
                                    CFXJSE_Arguments& args) {
   int32_t argc = args.GetLength();
   if ((argc > 0) && (argc < 4)) {
     FX_BOOL bFlags = FALSE;
@@ skipping 32 matching lines @@
                   localString.AsStringC(), TRUE, szGMTTimeString);
       if (szGMTTimeString.IsEmpty()) {
         szGMTTimeString = "";
       }
       FXJSE_Value_SetUTF8String(args.GetReturnValue(),
                                 szGMTTimeString.AsStringC());
     } else {
       FXJSE_Value_SetNull(args.GetReturnValue());
     }
   } else {
-    CXFA_FM2JSContext* pContext =
-        static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
-    pContext->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"Num2GMTime");
+    ToJSContext(pThis, nullptr)
+        ->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"Num2GMTime");
   }
 }
 
 // static
 void CXFA_FM2JSContext::Num2Time(CFXJSE_Value* pThis,
                                  const CFX_ByteStringC& szFuncName,
                                  CFXJSE_Arguments& args) {
   int32_t argc = args.GetLength();
   if ((argc > 0) && (argc < 4)) {
     FX_BOOL bFlags = FALSE;
@@ skipping 32 matching lines @@
                   localString.AsStringC(), FALSE, szLocalTimeString);
       if (szLocalTimeString.IsEmpty()) {
         szLocalTimeString = "";
       }
       FXJSE_Value_SetUTF8String(args.GetReturnValue(),
                                 szLocalTimeString.AsStringC());
     } else {
       FXJSE_Value_SetNull(args.GetReturnValue());
     }
   } else {
-    CXFA_FM2JSContext* pContext =
-        static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
-    pContext->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"Num2Time");
+    ToJSContext(pThis, nullptr)
+        ->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"Num2Time");
   }
 }
 
 // static
 void CXFA_FM2JSContext::Time(CFXJSE_Value* pThis,
                              const CFX_ByteStringC& szFuncName,
                              CFXJSE_Arguments& args) {
   if (args.GetLength() == 0) {
     time_t now;
     time(&now);
     struct tm* pGmt = gmtime(&now);
     int32_t iGMHour = pGmt->tm_hour;
     int32_t iGMMin = pGmt->tm_min;
     int32_t iGMSec = pGmt->tm_sec;
     FXJSE_Value_SetInteger(args.GetReturnValue(),
                            ((iGMHour * 3600 + iGMMin * 60 + iGMSec) * 1000));
   } else {
-    CXFA_FM2JSContext* pContext =
-        static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
-    pContext->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"Time");
+    ToJSContext(pThis, nullptr)
+        ->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"Time");
   }
 }
 
 // static
 void CXFA_FM2JSContext::Time2Num(CFXJSE_Value* pThis,
                                  const CFX_ByteStringC& szFuncName,
                                  CFXJSE_Arguments& args) {
   int32_t argc = args.GetLength();
   if ((argc > 0) && (argc < 4)) {
     FX_BOOL bFlags = FALSE;
@@ skipping 17 matching lines @@
     }
     if (argc == 3) {
       std::unique_ptr<CFXJSE_Value> localValue = GetSimpleValue(pThis, args, 2);
       if (ValueIsNull(pThis, localValue.get())) {
         bFlags = TRUE;
       } else {
         ValueToUTF8String(localValue.get(), localString);
       }
     }
     if (!bFlags) {
-      CXFA_FM2JSContext* pContext =
-          static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
-      CXFA_Document* pDoc = pContext->GetDocument();
+      CXFA_Document* pDoc = ToJSContext(pThis, nullptr)->GetDocument();
       IFX_LocaleMgr* pMgr = (IFX_LocaleMgr*)pDoc->GetLocalMgr();
       IFX_Locale* pLocale = nullptr;
       if (localString.IsEmpty()) {
         CXFA_Node* pThisNode =
             ToNode(pDoc->GetScriptContext()->GetThisObject());
         ASSERT(pThisNode);
         CXFA_WidgetData widgetData(pThisNode);
         pLocale = widgetData.GetLocal();
       } else {
         pLocale = pMgr->GetLocaleByName(
@@ skipping 34 matching lines @@
         int32_t iResult =
             hour * 3600000 + min * 60000 + second * 1000 + milSecond + 1;
         FXJSE_Value_SetInteger(args.GetReturnValue(), iResult);
       } else {
         FXJSE_Value_SetInteger(args.GetReturnValue(), 0);
       }
     } else {
       FXJSE_Value_SetNull(args.GetReturnValue());
     }
   } else {
-    CXFA_FM2JSContext* pContext =
-        static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
-    pContext->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"Time2Num");
+    ToJSContext(pThis, nullptr)
+        ->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"Time2Num");
   }
 }
 
 // static
 void CXFA_FM2JSContext::TimeFmt(CFXJSE_Value* pThis,
                                 const CFX_ByteStringC& szFuncName,
                                 CFXJSE_Arguments& args) {
   int32_t argc = args.GetLength();
   if (argc < 3) {
     FX_BOOL bFlags = FALSE;
@@ skipping 21 matching lines @@
       CFX_ByteString formatStr;
       GetStandardTimeFormat(pThis, iStyle, szLocal.AsStringC(), formatStr);
       if (formatStr.IsEmpty()) {
         formatStr = "";
       }
       FXJSE_Value_SetUTF8String(args.GetReturnValue(), formatStr.AsStringC());
     } else {
       FXJSE_Value_SetNull(args.GetReturnValue());
     }
   } else {
-    CXFA_FM2JSContext* pContext =
-        static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
-    pContext->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"TimeFmt");
+    ToJSContext(pThis, nullptr)
+        ->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"TimeFmt");
   }
 }
 
 // static
 FX_BOOL CXFA_FM2JSContext::IsIsoDateFormat(const FX_CHAR* pData,
                                            int32_t iLength,
                                            int32_t& iStyle,
                                            int32_t& iYear,
                                            int32_t& iMonth,
                                            int32_t& iDay) {
@@ skipping 314 matching lines @@
   iRet = TRUE;
   return iRet;
 }
 
 // static
 FX_BOOL CXFA_FM2JSContext::Local2IsoDate(CFXJSE_Value* pThis,
                                          const CFX_ByteStringC& szDate,
                                          const CFX_ByteStringC& szFormat,
                                          const CFX_ByteStringC& szLocale,
                                          CFX_ByteString& strIsoDate) {
-  CXFA_FM2JSContext* pContext =
-      static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
-  CXFA_Document* pDoc = pContext->GetDocument();
+  CXFA_Document* pDoc = ToJSContext(pThis, nullptr)->GetDocument();
   if (!pDoc) {
     return FALSE;
   }
   IFX_LocaleMgr* pMgr = (IFX_LocaleMgr*)pDoc->GetLocalMgr();
   IFX_Locale* pLocale = nullptr;
   if (szLocale.IsEmpty()) {
     CXFA_Node* pThisNode = ToNode(pDoc->GetScriptContext()->GetThisObject());
     ASSERT(pThisNode);
     CXFA_WidgetData widgetData(pThisNode);
     pLocale = widgetData.GetLocal();
@@ skipping 15 matching lines @@
   strIsoDate.Format("%4d-%02d-%02d", dt.GetYear(), dt.GetMonth(), dt.GetDay());
   return TRUE;
 }
 
 // static
 FX_BOOL CXFA_FM2JSContext::Local2IsoTime(CFXJSE_Value* pThis,
                                          const CFX_ByteStringC& szTime,
                                          const CFX_ByteStringC& szFormat,
                                          const CFX_ByteStringC& szLocale,
                                          CFX_ByteString& strIsoTime) {
-  CXFA_FM2JSContext* pContext =
-      static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
-  CXFA_Document* pDoc = pContext->GetDocument();
+  CXFA_Document* pDoc = ToJSContext(pThis, nullptr)->GetDocument();
   if (!pDoc) {
     return FALSE;
   }
   IFX_LocaleMgr* pMgr = (IFX_LocaleMgr*)pDoc->GetLocalMgr();
   IFX_Locale* pLocale = nullptr;
   if (szLocale.IsEmpty()) {
     CXFA_Node* pThisNode = ToNode(pDoc->GetScriptContext()->GetThisObject());
     ASSERT(pThisNode);
     CXFA_WidgetData widgetData(pThisNode);
     pLocale = widgetData.GetLocal();
@@ skipping 18 matching lines @@
                     utime.GetSecond(), utime.GetMillisecond());
   return TRUE;
 }
 
 // static
 FX_BOOL CXFA_FM2JSContext::IsoDate2Local(CFXJSE_Value* pThis,
                                          const CFX_ByteStringC& szDate,
                                          const CFX_ByteStringC& szFormat,
                                          const CFX_ByteStringC& szLocale,
                                          CFX_ByteString& strLocalDate) {
-  CXFA_FM2JSContext* pContext =
-      static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
-  CXFA_Document* pDoc = pContext->GetDocument();
+  CXFA_Document* pDoc = ToJSContext(pThis, nullptr)->GetDocument();
   if (!pDoc) {
     return FALSE;
   }
   IFX_LocaleMgr* pMgr = (IFX_LocaleMgr*)pDoc->GetLocalMgr();
   IFX_Locale* pLocale = nullptr;
   if (szLocale.IsEmpty()) {
     CXFA_Node* pThisNode = ToNode(pDoc->GetScriptContext()->GetThisObject());
     ASSERT(pThisNode);
     CXFA_WidgetData widgetData(pThisNode);
     pLocale = widgetData.GetLocal();
@@ skipping 17 matching lines @@
   strLocalDate = FX_UTF8Encode(wsRet.c_str(), wsRet.GetLength());
   return TRUE;
 }
 
 // static
 FX_BOOL CXFA_FM2JSContext::IsoTime2Local(CFXJSE_Value* pThis,
                                          const CFX_ByteStringC& szTime,
                                          const CFX_ByteStringC& szFormat,
                                          const CFX_ByteStringC& szLocale,
                                          CFX_ByteString& strLocalTime) {
-  CXFA_FM2JSContext* pContext =
-      static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
-  CXFA_Document* pDoc = pContext->GetDocument();
+  CXFA_Document* pDoc = ToJSContext(pThis, nullptr)->GetDocument();
   if (!pDoc) {
     return FALSE;
   }
   IFX_LocaleMgr* pMgr = (IFX_LocaleMgr*)pDoc->GetLocalMgr();
   IFX_Locale* pLocale = nullptr;
   if (szLocale.IsEmpty()) {
     CXFA_Node* pThisNode = ToNode(pDoc->GetScriptContext()->GetThisObject());
     ASSERT(pThisNode);
     CXFA_WidgetData widgetData(pThisNode);
     pLocale = widgetData.GetLocal();
@@ skipping 19 matching lines @@
   strLocalTime = FX_UTF8Encode(wsRet.c_str(), wsRet.GetLength());
   return TRUE;
 }
 
 // static
 FX_BOOL CXFA_FM2JSContext::GetGMTTime(CFXJSE_Value* pThis,
                                       const CFX_ByteStringC& szTime,
                                       const CFX_ByteStringC& szFormat,
                                       const CFX_ByteStringC& szLocale,
                                       CFX_ByteString& strGMTTime) {
-  CXFA_FM2JSContext* pContext =
-      static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
-  CXFA_Document* pDoc = pContext->GetDocument();
+  CXFA_Document* pDoc = ToJSContext(pThis, nullptr)->GetDocument();
   if (!pDoc) {
     return FALSE;
   }
   IFX_LocaleMgr* pMgr = (IFX_LocaleMgr*)pDoc->GetLocalMgr();
   IFX_Locale* pLocale = nullptr;
   if (szLocale.IsEmpty()) {
     CXFA_Node* pThisNode = ToNode(pDoc->GetScriptContext()->GetThisObject());
     ASSERT(pThisNode);
     CXFA_WidgetData widgetData(pThisNode);
     pLocale = widgetData.GetLocal();
@@ skipping 114 matching lines @@
     case 3:
       strStyle = FX_LOCALEDATETIMESUBCATEGORY_Long;
       break;
     case 4:
       strStyle = FX_LOCALEDATETIMESUBCATEGORY_Full;
       break;
     default:
       strStyle = FX_LOCALEDATETIMESUBCATEGORY_Medium;
       break;
   }
-  CXFA_FM2JSContext* pContext =
-      static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
-  CXFA_Document* pDoc = pContext->GetDocument();
+  CXFA_Document* pDoc = ToJSContext(pThis, nullptr)->GetDocument();
   if (!pDoc) {
     return;
   }
   IFX_LocaleMgr* pMgr = (IFX_LocaleMgr*)pDoc->GetLocalMgr();
   IFX_Locale* pLocale = nullptr;
   if (szLocalStr.IsEmpty()) {
     CXFA_Node* pThisNode = ToNode(pDoc->GetScriptContext()->GetThisObject());
     ASSERT(pThisNode);
     CXFA_WidgetData widgetData(pThisNode);
     pLocale = widgetData.GetLocal();
@@ skipping 33 matching lines @@
     case 3:
       strStyle = FX_LOCALEDATETIMESUBCATEGORY_Long;
       break;
     case 4:
       strStyle = FX_LOCALEDATETIMESUBCATEGORY_Full;
       break;
     default:
       strStyle = FX_LOCALEDATETIMESUBCATEGORY_Medium;
       break;
   }
-  CXFA_FM2JSContext* pContext =
-      static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
-  CXFA_Document* pDoc = pContext->GetDocument();
+  CXFA_Document* pDoc = ToJSContext(pThis, nullptr)->GetDocument();
   if (!pDoc) {
     return;
   }
   IFX_LocaleMgr* pMgr = (IFX_LocaleMgr*)pDoc->GetLocalMgr();
   IFX_Locale* pLocale = nullptr;
   if (szLocalStr.IsEmpty()) {
     CXFA_Node* pThisNode = ToNode(pDoc->GetScriptContext()->GetThisObject());
     ASSERT(pThisNode);
     CXFA_WidgetData widgetData(pThisNode);
     pLocale = widgetData.GetLocal();
@@ skipping 82 matching lines @@
   int32_t iLocalSec = pLocal->tm_sec;
   iHour = iLocalHour - iGMHour;
   iMin = iLocalMin - iGMMin;
   iSec = iLocalSec - iGMSec;
 }
 
 // static
 void CXFA_FM2JSContext::Apr(CFXJSE_Value* pThis,
                             const CFX_ByteStringC& szFuncName,
                             CFXJSE_Arguments& args) {
-  CXFA_FM2JSContext* pContext =
-      static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
+  CXFA_FM2JSContext* pContext = ToJSContext(pThis, nullptr);
   if (args.GetLength() == 3) {
     FX_BOOL bFlags = FALSE;
     FX_DOUBLE nPrincipal = 0;
     FX_DOUBLE nPayment = 0;
     FX_DOUBLE nPeriods = 0;
     std::unique_ptr<CFXJSE_Value> argOne = GetSimpleValue(pThis, args, 0);
     std::unique_ptr<CFXJSE_Value> argTwo = GetSimpleValue(pThis, args, 1);
     std::unique_ptr<CFXJSE_Value> argThree = GetSimpleValue(pThis, args, 2);
     bFlags =
         (ValueIsNull(pThis, argOne.get()) || ValueIsNull(pThis, argTwo.get()) ||
@@ skipping 42 matching lines @@
     }
   } else {
     pContext->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"Apr");
   }
 }
 
 // static
 void CXFA_FM2JSContext::CTerm(CFXJSE_Value* pThis,
                               const CFX_ByteStringC& szFuncName,
                               CFXJSE_Arguments& args) {
-  CXFA_FM2JSContext* pContext =
-      static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
+  CXFA_FM2JSContext* pContext = ToJSContext(pThis, nullptr);
   if (args.GetLength() == 3) {
     FX_BOOL bFlags = FALSE;
     FX_FLOAT nRate = 0;
     FX_FLOAT nFutureValue = 0;
     FX_FLOAT nInitAmount = 0;
     std::unique_ptr<CFXJSE_Value> argOne = GetSimpleValue(pThis, args, 0);
     std::unique_ptr<CFXJSE_Value> argTwo = GetSimpleValue(pThis, args, 1);
     std::unique_ptr<CFXJSE_Value> argThree = GetSimpleValue(pThis, args, 2);
     bFlags =
         (ValueIsNull(pThis, argOne.get()) || ValueIsNull(pThis, argTwo.get()) ||
@@ skipping 15 matching lines @@
     }
   } else {
     pContext->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"CTerm");
   }
 }
 
 // static
 void CXFA_FM2JSContext::FV(CFXJSE_Value* pThis,
                            const CFX_ByteStringC& szFuncName,
                            CFXJSE_Arguments& args) {
-  CXFA_FM2JSContext* pContext =
-      static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
+  CXFA_FM2JSContext* pContext = ToJSContext(pThis, nullptr);
   if (args.GetLength() == 3) {
     FX_BOOL bFlags = FALSE;
     FX_DOUBLE nAmount = 0;
     FX_DOUBLE nRate = 0;
     FX_DOUBLE nPeriod = 0;
     std::unique_ptr<CFXJSE_Value> argOne = GetSimpleValue(pThis, args, 0);
     std::unique_ptr<CFXJSE_Value> argTwo = GetSimpleValue(pThis, args, 1);
     std::unique_ptr<CFXJSE_Value> argThree = GetSimpleValue(pThis, args, 2);
     bFlags =
         (ValueIsNull(pThis, argOne.get()) || ValueIsNull(pThis, argTwo.get()) ||
@@ skipping 23 matching lines @@
     }
   } else {
     pContext->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"FV");
   }
 }
 
 // static
 void CXFA_FM2JSContext::IPmt(CFXJSE_Value* pThis,
                              const CFX_ByteStringC& szFuncName,
                              CFXJSE_Arguments& args) {
-  CXFA_FM2JSContext* pContext =
-      static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
+  CXFA_FM2JSContext* pContext = ToJSContext(pThis, nullptr);
   if (args.GetLength() == 5) {
     FX_BOOL bFlags = FALSE;
     FX_FLOAT nPrincpalAmount = 0;
     FX_FLOAT nRate = 0;
     FX_FLOAT nPayment = 0;
     FX_FLOAT nFirstMonth = 0;
     FX_FLOAT nNumberOfMonths = 0;
     std::unique_ptr<CFXJSE_Value> argOne = GetSimpleValue(pThis, args, 0);
     std::unique_ptr<CFXJSE_Value> argTwo = GetSimpleValue(pThis, args, 1);
     std::unique_ptr<CFXJSE_Value> argThree = GetSimpleValue(pThis, args, 2);
@@ skipping 49 matching lines @@
     }
   } else {
     pContext->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"IPmt");
   }
 }
 
 // static
 void CXFA_FM2JSContext::NPV(CFXJSE_Value* pThis,
                             const CFX_ByteStringC& szFuncName,
                             CFXJSE_Arguments& args) {
-  CXFA_FM2JSContext* pContext =
-      static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
+  CXFA_FM2JSContext* pContext = ToJSContext(pThis, nullptr);
   int32_t argc = args.GetLength();
   if (argc > 2) {
     FX_BOOL bFlags = FALSE;
     std::vector<std::unique_ptr<CFXJSE_Value>> argValues;
     for (int32_t i = 0; i < argc; i++) {
       argValues.push_back(GetSimpleValue(pThis, args, i));
       if (ValueIsNull(pThis, argValues[i].get())) {
         bFlags = TRUE;
       }
     }
@@ skipping 26 matching lines @@
     }
   } else {
     pContext->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"NPV");
   }
 }
 
 // static
 void CXFA_FM2JSContext::Pmt(CFXJSE_Value* pThis,
                             const CFX_ByteStringC& szFuncName,
                             CFXJSE_Arguments& args) {
-  CXFA_FM2JSContext* pContext =
-      static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
+  CXFA_FM2JSContext* pContext = ToJSContext(pThis, nullptr);
   if (args.GetLength() == 3) {
     FX_BOOL bFlags = FALSE;
     FX_FLOAT nPrincipal = 0;
     FX_FLOAT nRate = 0;
     FX_FLOAT nPeriods = 0;
     std::unique_ptr<CFXJSE_Value> argOne = GetSimpleValue(pThis, args, 0);
     std::unique_ptr<CFXJSE_Value> argTwo = GetSimpleValue(pThis, args, 1);
     std::unique_ptr<CFXJSE_Value> argThree = GetSimpleValue(pThis, args, 2);
     bFlags =
         (ValueIsNull(pThis, argOne.get()) || ValueIsNull(pThis, argTwo.get()) ||
@@ skipping 20 matching lines @@
     }
   } else {
     pContext->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"Pmt");
   }
 }
 
 // static
 void CXFA_FM2JSContext::PPmt(CFXJSE_Value* pThis,
                              const CFX_ByteStringC& szFuncName,
                              CFXJSE_Arguments& args) {
-  CXFA_FM2JSContext* pContext =
-      static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
+  CXFA_FM2JSContext* pContext = ToJSContext(pThis, nullptr);
   if (args.GetLength() == 5) {
     FX_BOOL bFlags = FALSE;
     FX_FLOAT nPrincpalAmount = 0;
     FX_FLOAT nRate = 0;
     FX_FLOAT nPayment = 0;
     FX_FLOAT nFirstMonth = 0;
     FX_FLOAT nNumberOfMonths = 0;
     std::unique_ptr<CFXJSE_Value> argOne = GetSimpleValue(pThis, args, 0);
     std::unique_ptr<CFXJSE_Value> argTwo = GetSimpleValue(pThis, args, 1);
     std::unique_ptr<CFXJSE_Value> argThree = GetSimpleValue(pThis, args, 2);
@@ skipping 50 matching lines @@
     }
   } else {
     pContext->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"PPmt");
   }
 }
 
 // static
 void CXFA_FM2JSContext::PV(CFXJSE_Value* pThis,
                            const CFX_ByteStringC& szFuncName,
                            CFXJSE_Arguments& args) {
-  CXFA_FM2JSContext* pContext =
-      static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
+  CXFA_FM2JSContext* pContext = ToJSContext(pThis, nullptr);
   if (args.GetLength() == 3) {
     FX_BOOL bFlags = FALSE;
     FX_DOUBLE nAmount = 0;
     FX_DOUBLE nRate = 0;
     FX_DOUBLE nPeriod = 0;
     std::unique_ptr<CFXJSE_Value> argOne = GetSimpleValue(pThis, args, 0);
     std::unique_ptr<CFXJSE_Value> argTwo = GetSimpleValue(pThis, args, 1);
     std::unique_ptr<CFXJSE_Value> argThree = GetSimpleValue(pThis, args, 2);
     bFlags =
         (ValueIsNull(pThis, argOne.get()) || ValueIsNull(pThis, argTwo.get()) ||
@@ skipping 19 matching lines @@
     }
   } else {
     pContext->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"PV");
   }
 }
 
 // static
 void CXFA_FM2JSContext::Rate(CFXJSE_Value* pThis,
                              const CFX_ByteStringC& szFuncName,
                              CFXJSE_Arguments& args) {
-  CXFA_FM2JSContext* pContext =
-      static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
+  CXFA_FM2JSContext* pContext = ToJSContext(pThis, nullptr);
   if (args.GetLength() == 3) {
     FX_BOOL bFlags = FALSE;
     FX_FLOAT nFuture = 0;
     FX_FLOAT nPresent = 0;
     FX_FLOAT nTotalNumber = 0;
     std::unique_ptr<CFXJSE_Value> argOne = GetSimpleValue(pThis, args, 0);
     std::unique_ptr<CFXJSE_Value> argTwo = GetSimpleValue(pThis, args, 1);
     std::unique_ptr<CFXJSE_Value> argThree = GetSimpleValue(pThis, args, 2);
     bFlags =
         (ValueIsNull(pThis, argOne.get()) || ValueIsNull(pThis, argTwo.get()) ||
@@ skipping 16 matching lines @@
     }
   } else {
     pContext->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"Rate");
   }
 }
 
 // static
 void CXFA_FM2JSContext::Term(CFXJSE_Value* pThis,
                              const CFX_ByteStringC& szFuncName,
                              CFXJSE_Arguments& args) {
-  CXFA_FM2JSContext* pContext =
-      static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
+  CXFA_FM2JSContext* pContext = ToJSContext(pThis, nullptr);
   if (args.GetLength() == 3) {
     FX_BOOL bFlags = FALSE;
     FX_FLOAT nMount = 0;
     FX_FLOAT nRate = 0;
     FX_FLOAT nFuture = 0;
     std::unique_ptr<CFXJSE_Value> argOne = GetSimpleValue(pThis, args, 0);
     std::unique_ptr<CFXJSE_Value> argTwo = GetSimpleValue(pThis, args, 1);
     std::unique_ptr<CFXJSE_Value> argThree = GetSimpleValue(pThis, args, 2);
     bFlags =
         (ValueIsNull(pThis, argOne.get()) || ValueIsNull(pThis, argTwo.get()) ||
@@ skipping 16 matching lines @@
     }
   } else {
     pContext->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"Term");
   }
 }
 
 // static
 void CXFA_FM2JSContext::Choose(CFXJSE_Value* pThis,
                                const CFX_ByteStringC& szFuncName,
                                CFXJSE_Arguments& args) {
-  CXFA_FM2JSContext* pContext =
-      static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
+  CXFA_FM2JSContext* pContext = ToJSContext(pThis, nullptr);
   int32_t argc = args.GetLength();
   if (argc > 1) {
     v8::Isolate* pIsolate = pContext->GetScriptRuntime();
     std::unique_ptr<CFXJSE_Value> argOne = args.GetValue(0);
     FX_BOOL argOneIsNull = FALSE;
     int32_t iIndex = 0;
     argOneIsNull = ValueIsNull(pThis, argOne.get());
     if (!argOneIsNull) {
       iIndex = (int32_t)ValueToFloat(pThis, argOne.get());
     }
@@ skipping 55 matching lines @@
             bFound = TRUE;
           }
         }
         iArgIndex++;
       }
       if (!bFound) {
         FXJSE_Value_SetUTF8String(args.GetReturnValue(), "");
       }
     }
   } else {
-    CXFA_FM2JSContext* pContext =
-        static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
     pContext->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"Choose");
   }
 }
 
 // static
 void CXFA_FM2JSContext::Exists(CFXJSE_Value* pThis,
                                const CFX_ByteStringC& szFuncName,
                                CFXJSE_Arguments& args) {
   if (args.GetLength() == 1) {
     std::unique_ptr<CFXJSE_Value> argOne = args.GetValue(0);
     FXJSE_Value_SetInteger(args.GetReturnValue(),
                            FXJSE_Value_IsObject(argOne.get()));
   } else {
-    CXFA_FM2JSContext* pContext =
-        static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
-    pContext->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"Exists");
+    ToJSContext(pThis, nullptr)
+        ->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"Exists");
   }
 }
 
 // static
 void CXFA_FM2JSContext::HasValue(CFXJSE_Value* pThis,
                                  const CFX_ByteStringC& szFuncName,
                                  CFXJSE_Arguments& args) {
   if (args.GetLength() == 1) {
     std::unique_ptr<CFXJSE_Value> argOne = GetSimpleValue(pThis, args, 0);
     if (FXJSE_Value_IsUTF8String(argOne.get())) {
       CFX_ByteString valueStr;
       FXJSE_Value_ToUTF8String(argOne.get(), valueStr);
       valueStr.TrimLeft();
       FXJSE_Value_SetInteger(args.GetReturnValue(), (!valueStr.IsEmpty()));
     } else if (FXJSE_Value_IsNumber(argOne.get()) ||
                FXJSE_Value_IsBoolean(argOne.get())) {
       FXJSE_Value_SetInteger(args.GetReturnValue(), TRUE);
     } else {
       FXJSE_Value_SetInteger(args.GetReturnValue(), FALSE);
     }
   } else {
-    CXFA_FM2JSContext* pContext =
-        static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
-    pContext->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"HasValue");
+    ToJSContext(pThis, nullptr)
+        ->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"HasValue");
   }
 }
 
 // static
 void CXFA_FM2JSContext::Oneof(CFXJSE_Value* pThis,
                               const CFX_ByteStringC& szFuncName,
                               CFXJSE_Arguments& args) {
   if (args.GetLength() > 1) {
     FX_BOOL bFlags = FALSE;
     std::unique_ptr<CFXJSE_Value> argOne = GetSimpleValue(pThis, args, 0);
     CFXJSE_Value** parametersValue = nullptr;
     int32_t iCount = 0;
     unfoldArgs(pThis, args, parametersValue, iCount, 1);
     for (int32_t i = 0; i < iCount; i++) {
       if (simpleValueCompare(pThis, argOne.get(), parametersValue[i])) {
         bFlags = TRUE;
         break;
       }
     }
     FXJSE_Value_SetInteger(args.GetReturnValue(), bFlags);
     for (int32_t i = 0; i < iCount; i++) {
       delete parametersValue[i];
     }
     FX_Free(parametersValue);
   } else {
-    CXFA_FM2JSContext* pContext =
-        static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
-    pContext->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"Oneof");
+    ToJSContext(pThis, nullptr)
+        ->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"Oneof");
   }
 }
 
 // static
 void CXFA_FM2JSContext::Within(CFXJSE_Value* pThis,
                                const CFX_ByteStringC& szFuncName,
                                CFXJSE_Arguments& args) {
   if (args.GetLength() == 3) {
     std::unique_ptr<CFXJSE_Value> argOne = GetSimpleValue(pThis, args, 0);
     if (FXJSE_Value_IsNull(argOne.get())) {
@@ skipping 15 matching lines @@
         ValueToUTF8String(argOne.get(), oneString);
         ValueToUTF8String(argLow.get(), lowString);
         ValueToUTF8String(argHeight.get(), heightString);
         FXJSE_Value_SetInteger(
             args.GetReturnValue(),
             ((oneString.Compare(lowString.AsStringC()) >= 0) &&
              (oneString.Compare(heightString.AsStringC()) <= 0)));
       }
     }
   } else {
-    CXFA_FM2JSContext* pContext =
-        static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
-    pContext->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"Within");
+    ToJSContext(pThis, nullptr)
+        ->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"Within");
   }
 }
 
 // static
 void CXFA_FM2JSContext::If(CFXJSE_Value* pThis,
                            const CFX_ByteStringC& szFuncName,
                            CFXJSE_Arguments& args) {
   if (args.GetLength() == 3) {
     std::unique_ptr<CFXJSE_Value> argCondition = GetSimpleValue(pThis, args, 0);
     std::unique_ptr<CFXJSE_Value> argFirstValue =
         GetSimpleValue(pThis, args, 1);
     std::unique_ptr<CFXJSE_Value> argSecondValue =
         GetSimpleValue(pThis, args, 2);
     FX_BOOL bCondition = FXJSE_Value_ToBoolean(argCondition.get());
     FXJSE_Value_Set(args.GetReturnValue(),
                     bCondition ? argFirstValue.get() : argSecondValue.get());
   } else {
-    CXFA_FM2JSContext* pContext =
-        static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
-    pContext->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"If");
+    ToJSContext(pThis, nullptr)
+        ->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"If");
   }
 }
 
 // static
 void CXFA_FM2JSContext::Eval(CFXJSE_Value* pThis,
                              const CFX_ByteStringC& szFuncName,
                              CFXJSE_Arguments& args) {
-  CXFA_FM2JSContext* pContext =
-      static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
+  CXFA_FM2JSContext* pContext = ToJSContext(pThis, nullptr);
   if (args.GetLength() == 1) {
     v8::Isolate* pIsolate = pContext->GetScriptRuntime();
     std::unique_ptr<CFXJSE_Value> scriptValue = GetSimpleValue(pThis, args, 0);
     CFX_ByteString utf8ScriptString;
     ValueToUTF8String(scriptValue.get(), utf8ScriptString);
     if (utf8ScriptString.IsEmpty()) {
       FXJSE_Value_SetNull(args.GetReturnValue());
     } else {
       CFX_WideTextBuf wsJavaScriptBuf;
       CFX_WideString javaScript;
@@ skipping 14 matching lines @@
     }
   } else {
     pContext->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"Eval");
   }
 }
 
 // static
 void CXFA_FM2JSContext::Ref(CFXJSE_Value* pThis,
                             const CFX_ByteStringC& szFuncName,
                             CFXJSE_Arguments& args) {
-  CXFA_FM2JSContext* pContext =
-      static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
+  CXFA_FM2JSContext* pContext = ToJSContext(pThis, nullptr);
   v8::Isolate* pIsolate = pContext->GetScriptRuntime();
   if (args.GetLength() == 1) {
     std::unique_ptr<CFXJSE_Value> argOne = args.GetValue(0);
     if (FXJSE_Value_IsNull(argOne.get())) {
       CFXJSE_Value* rgValues[3];
       for (int32_t i = 0; i < 3; i++)
         rgValues[i] = new CFXJSE_Value(pIsolate);
 
       FXJSE_Value_SetInteger(rgValues[0], 4);
       FXJSE_Value_SetNull(rgValues[1]);
@@ skipping 158 matching lines @@
           break;
         case VALUETYPE_ISMP:
           FXJSE_Value_SetUTF8String(args.GetReturnValue(), "mp");
           break;
         default:
           FXJSE_Value_SetUTF8String(args.GetReturnValue(), "in");
           break;
       }
     }
   } else {
-    CXFA_FM2JSContext* pContext =
-        static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
-    pContext->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"UnitType");
+    ToJSContext(pThis, nullptr)
+        ->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"UnitType");
   }
 }
 
 // static
 void CXFA_FM2JSContext::UnitValue(CFXJSE_Value* pThis,
                                   const CFX_ByteStringC& szFuncName,
                                   CFXJSE_Arguments& args) {
   int32_t argc = args.GetLength();
   if ((argc == 1) || (argc == 2)) {
     std::unique_ptr<CFXJSE_Value> unitspanValue =
@@ skipping 134 matching lines @@
           } else {
             dResult = dFirstNumber / 72000;
           }
         }
         FXJSE_Value_SetDouble(args.GetReturnValue(), dResult);
       } else {
         FXJSE_Value_SetInteger(args.GetReturnValue(), 0);
       }
     }
   } else {
-    CXFA_FM2JSContext* pContext =
-        static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
-    pContext->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"UnitValue");
+    ToJSContext(pThis, nullptr)
+        ->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"UnitValue");
   }
 }
 
 // static
 void CXFA_FM2JSContext::At(CFXJSE_Value* pThis,
                            const CFX_ByteStringC& szFuncName,
                            CFXJSE_Arguments& args) {
   if (args.GetLength() == 2) {
     std::unique_ptr<CFXJSE_Value> argOne = GetSimpleValue(pThis, args, 0);
     std::unique_ptr<CFXJSE_Value> argTwo = GetSimpleValue(pThis, args, 1);
     if (ValueIsNull(pThis, argOne.get()) || ValueIsNull(pThis, argTwo.get())) {
       FXJSE_Value_SetNull(args.GetReturnValue());
     } else {
       CFX_ByteString stringTwo;
       ValueToUTF8String(argTwo.get(), stringTwo);
       if (stringTwo.IsEmpty()) {
         FXJSE_Value_SetInteger(args.GetReturnValue(), 1);
       } else {
         CFX_ByteString stringOne;
         ValueToUTF8String(argOne.get(), stringOne);
         FX_STRSIZE iPosition = stringOne.Find(stringTwo.AsStringC());
         FXJSE_Value_SetInteger(args.GetReturnValue(), iPosition + 1);
       }
     }
   } else {
-    CXFA_FM2JSContext* pContext =
-        static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
-    pContext->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"At");
+    ToJSContext(pThis, nullptr)
+        ->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"At");
   }
 }
 
 // static
 void CXFA_FM2JSContext::Concat(CFXJSE_Value* pThis,
                                const CFX_ByteStringC& szFuncName,
                                CFXJSE_Arguments& args) {
   int32_t argc = args.GetLength();
   if (argc >= 1) {
     CFX_ByteString resultString;
     FX_BOOL bAllNull = TRUE;
 
     for (int32_t i = 0; i < argc; i++) {
       std::unique_ptr<CFXJSE_Value> value = GetSimpleValue(pThis, args, i);
       if (!ValueIsNull(pThis, value.get())) {
         CFX_ByteString valueStr;
         ValueToUTF8String(value.get(), valueStr);
         resultString += valueStr;
         bAllNull = FALSE;
       }
     }
 
     if (bAllNull) {
       FXJSE_Value_SetNull(args.GetReturnValue());
     } else {
       FXJSE_Value_SetUTF8String(args.GetReturnValue(),
                                 resultString.AsStringC());
     }
   } else {
-    CXFA_FM2JSContext* pContext =
-        static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
-    pContext->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"Concat");
+    ToJSContext(pThis, nullptr)
+        ->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"Concat");
   }
 }
 
 // static
 void CXFA_FM2JSContext::Decode(CFXJSE_Value* pThis,
                                const CFX_ByteStringC& szFuncName,
                                CFXJSE_Arguments& args) {
   int32_t argc = args.GetLength();
   if (argc == 1) {
     std::unique_ptr<CFXJSE_Value> argOne = GetSimpleValue(pThis, args, 0);
@@ skipping 20 matching lines @@
       if (identifyString.EqualNoCase("html")) {
         DecodeHTML(toDecodeString.AsStringC(), resultBuf);
       } else if (identifyString.EqualNoCase("xml")) {
         DecodeXML(toDecodeString.AsStringC(), resultBuf);
       } else {
         DecodeURL(toDecodeString.AsStringC(), resultBuf);
       }
       FXJSE_Value_SetUTF8String(args.GetReturnValue(), resultBuf.AsStringC());
     }
   } else {
-    CXFA_FM2JSContext* pContext =
-        static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
-    pContext->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"Decode");
+    ToJSContext(pThis, nullptr)
+        ->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"Decode");
   }
 }
 
 // static
 void CXFA_FM2JSContext::DecodeURL(const CFX_ByteStringC& szURLString,
                                   CFX_ByteTextBuf& szResultString) {
   CFX_WideString wsURLString = CFX_WideString::FromUTF8(szURLString);
   const FX_WCHAR* pData = wsURLString.c_str();
   int32_t iLen = wsURLString.GetLength();
   int32_t i = 0;
@@ skipping 252 matching lines @@
       if (identifyString.EqualNoCase("html")) {
         EncodeHTML(toEncodeString.AsStringC(), resultBuf);
       } else if (identifyString.EqualNoCase("xml")) {
         EncodeXML(toEncodeString.AsStringC(), resultBuf);
       } else {
         EncodeURL(toEncodeString.AsStringC(), resultBuf);
       }
       FXJSE_Value_SetUTF8String(args.GetReturnValue(), resultBuf.AsStringC());
     }
   } else {
-    CXFA_FM2JSContext* pContext =
-        static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
-    pContext->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"Encode");
+    ToJSContext(pThis, nullptr)
+        ->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"Encode");
   }
 }
 
 // static
 void CXFA_FM2JSContext::EncodeURL(const CFX_ByteStringC& szURLString,
                                   CFX_ByteTextBuf& szResultBuf) {
   CFX_WideString wsURLString = CFX_WideString::FromUTF8(szURLString);
   CFX_WideTextBuf wsResultBuf;
   FX_WCHAR ch = 0;
   int32_t iLength = wsURLString.GetLength();
@@ skipping 279 matching lines @@
       iStart = iMid + 1;
     }
   } while (iStart <= iEnd);
   return FALSE;
 }
 
 // static
 void CXFA_FM2JSContext::Format(CFXJSE_Value* pThis,
                                const CFX_ByteStringC& szFuncName,
                                CFXJSE_Arguments& args) {
-  CXFA_FM2JSContext* pContext =
-      static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
+  CXFA_FM2JSContext* pContext = ToJSContext(pThis, nullptr);
   if (args.GetLength() >= 2) {
     std::unique_ptr<CFXJSE_Value> argOne = GetSimpleValue(pThis, args, 0);
     std::unique_ptr<CFXJSE_Value> argTwo = GetSimpleValue(pThis, args, 1);
     CFX_ByteString szPattern;
     ValueToUTF8String(argOne.get(), szPattern);
     CFX_ByteString szValue;
     ValueToUTF8String(argTwo.get(), szValue);
     CXFA_Document* pDoc = pContext->GetDocument();
     IFX_LocaleMgr* pMgr = (IFX_LocaleMgr*)pDoc->GetLocalMgr();
     CXFA_Node* pThisNode = ToNode(pDoc->GetScriptContext()->GetThisObject());
@@ skipping 83 matching lines @@
       CFX_ByteString sourceString;
       ValueToUTF8String(argOne.get(), sourceString);
       int32_t count = ValueToInteger(pThis, argTwo.get());
       if (count < 0) {
         count = 0;
       }
       FXJSE_Value_SetUTF8String(args.GetReturnValue(),
                                 sourceString.Left(count).AsStringC());
     }
   } else {
-    CXFA_FM2JSContext* pContext =
-        static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
-    pContext->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"Left");
+    ToJSContext(pThis, nullptr)
+        ->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"Left");
   }
 }
 
 // static
 void CXFA_FM2JSContext::Len(CFXJSE_Value* pThis,
                             const CFX_ByteStringC& szFuncName,
                             CFXJSE_Arguments& args) {
   if (args.GetLength() == 1) {
     std::unique_ptr<CFXJSE_Value> argOne = GetSimpleValue(pThis, args, 0);
     if (ValueIsNull(pThis, argOne.get())) {
       FXJSE_Value_SetNull(args.GetReturnValue());
     } else {
       CFX_ByteString sourceString;
       ValueToUTF8String(argOne.get(), sourceString);
       FXJSE_Value_SetInteger(args.GetReturnValue(), sourceString.GetLength());
     }
   } else {
-    CXFA_FM2JSContext* pContext =
-        static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
-    pContext->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"Len");
+    ToJSContext(pThis, nullptr)
+        ->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"Len");
   }
 }
 
 // static
 void CXFA_FM2JSContext::Lower(CFXJSE_Value* pThis,
                               const CFX_ByteStringC& szFuncName,
                               CFXJSE_Arguments& args) {
   int32_t argc = args.GetLength();
   if ((argc > 0) && (argc < 3)) {
     CFX_ByteString argString;
@@ skipping 21 matching lines @@
         lowStringBuf.AppendChar(ch);
         ++i;
       }
       lowStringBuf.AppendChar(0);
       FXJSE_Value_SetUTF8String(
           args.GetReturnValue(),
           FX_UTF8Encode(lowStringBuf.GetBuffer(), lowStringBuf.GetLength())
               .AsStringC());
     }
   } else {
-    CXFA_FM2JSContext* pContext =
-        static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
-    pContext->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"Lower");
+    ToJSContext(pThis, nullptr)
+        ->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"Lower");
   }
 }
 
 // static
 void CXFA_FM2JSContext::Ltrim(CFXJSE_Value* pThis,
                               const CFX_ByteStringC& szFuncName,
                               CFXJSE_Arguments& args) {
   if (args.GetLength() == 1) {
     std::unique_ptr<CFXJSE_Value> argOne = GetSimpleValue(pThis, args, 0);
     if (ValueIsNull(pThis, argOne.get())) {
       FXJSE_Value_SetNull(args.GetReturnValue());
     } else {
       CFX_ByteString sourceString;
       ValueToUTF8String(argOne.get(), sourceString);
       sourceString.TrimLeft();
       FXJSE_Value_SetUTF8String(args.GetReturnValue(),
                                 sourceString.AsStringC());
     }
   } else {
-    CXFA_FM2JSContext* pContext =
-        static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
-    pContext->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"Ltrim");
+    ToJSContext(pThis, nullptr)
+        ->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"Ltrim");
   }
 }
 
 // static
 void CXFA_FM2JSContext::Parse(CFXJSE_Value* pThis,
                               const CFX_ByteStringC& szFuncName,
                               CFXJSE_Arguments& args) {
-  CXFA_FM2JSContext* pContext =
-      static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
+  CXFA_FM2JSContext* pContext = ToJSContext(pThis, nullptr);
   if (args.GetLength() == 2) {
     std::unique_ptr<CFXJSE_Value> argOne = GetSimpleValue(pThis, args, 0);
     std::unique_ptr<CFXJSE_Value> argTwo = GetSimpleValue(pThis, args, 1);
     if (ValueIsNull(pThis, argTwo.get())) {
       FXJSE_Value_SetNull(args.GetReturnValue());
     } else {
       CFX_ByteString szPattern;
       ValueToUTF8String(argOne.get(), szPattern);
       CFX_ByteString szValue;
       ValueToUTF8String(argTwo.get(), szValue);
@@ skipping 169 matching lines @@
         } else {
           resultString.AppendChar(ch);
         }
       } else {
         resultString.AppendChar(ch);
       }
     }
     resultString.AppendChar(0);
     FXJSE_Value_SetUTF8String(args.GetReturnValue(), resultString.AsStringC());
   } else {
-    CXFA_FM2JSContext* pContext =
-        static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
-    pContext->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"Replace");
+    ToJSContext(pThis, nullptr)
+        ->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"Replace");
   }
 }
 
 // static
 void CXFA_FM2JSContext::Right(CFXJSE_Value* pThis,
                               const CFX_ByteStringC& szFuncName,
                               CFXJSE_Arguments& args) {
   if (args.GetLength() == 2) {
     std::unique_ptr<CFXJSE_Value> argOne = GetSimpleValue(pThis, args, 0);
     std::unique_ptr<CFXJSE_Value> argTwo = GetSimpleValue(pThis, args, 1);
     FX_BOOL argIsNull = FALSE;
     if ((ValueIsNull(pThis, argOne.get())) ||
         (ValueIsNull(pThis, argTwo.get()))) {
       argIsNull = TRUE;
     }
     if (argIsNull) {
       FXJSE_Value_SetNull(args.GetReturnValue());
     } else {
       CFX_ByteString sourceString;
       ValueToUTF8String(argOne.get(), sourceString);
       int32_t count = ValueToInteger(pThis, argTwo.get());
       if (count < 0) {
         count = 0;
       }
       FXJSE_Value_SetUTF8String(args.GetReturnValue(),
                                 sourceString.Right(count).AsStringC());
     }
   } else {
-    CXFA_FM2JSContext* pContext =
-        static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
-    pContext->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"Right");
+    ToJSContext(pThis, nullptr)
+        ->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"Right");
   }
 }
 
 // static
 void CXFA_FM2JSContext::Rtrim(CFXJSE_Value* pThis,
                               const CFX_ByteStringC& szFuncName,
                               CFXJSE_Arguments& args) {
   if (args.GetLength() == 1) {
     std::unique_ptr<CFXJSE_Value> argOne = GetSimpleValue(pThis, args, 0);
     if (ValueIsNull(pThis, argOne.get())) {
       FXJSE_Value_SetNull(args.GetReturnValue());
     } else {
       CFX_ByteString sourceString;
       ValueToUTF8String(argOne.get(), sourceString);
       sourceString.TrimRight();
       FXJSE_Value_SetUTF8String(args.GetReturnValue(),
                                 sourceString.AsStringC());
     }
   } else {
-    CXFA_FM2JSContext* pContext =
-        static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
-    pContext->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"Rtrim");
+    ToJSContext(pThis, nullptr)
+        ->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"Rtrim");
   }
 }
 
 // static
 void CXFA_FM2JSContext::Space(CFXJSE_Value* pThis,
                               const CFX_ByteStringC& szFuncName,
                               CFXJSE_Arguments& args) {
   if (args.GetLength() == 1) {
     std::unique_ptr<CFXJSE_Value> argOne = GetSimpleValue(pThis, args, 0);
     if (FXJSE_Value_IsNull(argOne.get())) {
       FXJSE_Value_SetNull(args.GetReturnValue());
     } else {
       int32_t count = 0;
       count = ValueToInteger(pThis, argOne.get());
       count = (count < 0) ? 0 : count;
       CFX_ByteTextBuf spaceString;
       int32_t index = 0;
       while (index < count) {
         spaceString.AppendByte(' ');
         index++;
       }
       spaceString.AppendByte(0);
       FXJSE_Value_SetUTF8String(args.GetReturnValue(), spaceString.AsStringC());
     }
   } else {
-    CXFA_FM2JSContext* pContext =
-        static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
-    pContext->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"Space");
+    ToJSContext(pThis, nullptr)
+        ->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"Space");
   }
 }
 
 // static
 void CXFA_FM2JSContext::Str(CFXJSE_Value* pThis,
                             const CFX_ByteStringC& szFuncName,
                             CFXJSE_Arguments& args) {
   int32_t argc = args.GetLength();
   if ((argc > 0) && (argc < 4)) {
     FX_BOOL bFlags = FALSE;
@@ skipping 96 matching lines @@
             ++i;
           }
           resultBuf.AppendChar(0);
         }
       }
       FXJSE_Value_SetUTF8String(args.GetReturnValue(), resultBuf.AsStringC());
     } else {
       FXJSE_Value_SetNull(args.GetReturnValue());
     }
   } else {
-    CXFA_FM2JSContext* pContext =
-        static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
-    pContext->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"Str");
+    ToJSContext(pThis, nullptr)
+        ->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"Str");
   }
 }
 
 // static
 void CXFA_FM2JSContext::Stuff(CFXJSE_Value* pThis,
                               const CFX_ByteStringC& szFuncName,
                               CFXJSE_Arguments& args) {
   int32_t argc = args.GetLength();
   if ((argc == 3) || (argc == 4)) {
     CFX_ByteString sourceString;
@@ skipping 35 matching lines @@
     }
     resultString << insertString.AsStringC();
     i = iStart + iDelete;
     while (i < iLength) {
       resultString.AppendChar(sourceString.GetAt(i));
       ++i;
     }
     resultString.AppendChar(0);
     FXJSE_Value_SetUTF8String(args.GetReturnValue(), resultString.AsStringC());
   } else {
-    CXFA_FM2JSContext* pContext =
-        static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
-    pContext->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"Stuff");
+    ToJSContext(pThis, nullptr)
+        ->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"Stuff");
   }
 }
 
 // static
 void CXFA_FM2JSContext::Substr(CFXJSE_Value* pThis,
                                const CFX_ByteStringC& szFuncName,
                                CFXJSE_Arguments& args) {
   if (args.GetLength() == 3) {
     std::unique_ptr<CFXJSE_Value> stringValue = GetSimpleValue(pThis, args, 0);
     std::unique_ptr<CFXJSE_Value> startValue = GetSimpleValue(pThis, args, 1);
@@ skipping 21 matching lines @@
         }
         if (iCount <= 0) {
           iCount = 0;
         }
         iStart -= 1;
         FXJSE_Value_SetUTF8String(args.GetReturnValue(),
                                   szSourceStr.Mid(iStart, iCount).AsStringC());
       }
     }
   } else {
-    CXFA_FM2JSContext* pContext =
-        static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
-    pContext->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"Substr");
+    ToJSContext(pThis, nullptr)
+        ->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"Substr");
   }
 }
 
 // static
 void CXFA_FM2JSContext::Uuid(CFXJSE_Value* pThis,
                              const CFX_ByteStringC& szFuncName,
                              CFXJSE_Arguments& args) {
   int32_t argc = args.GetLength();
   if ((argc == 0) || (argc == 1)) {
     int32_t iNum = 0;
     if (argc == 1) {
       std::unique_ptr<CFXJSE_Value> argOne = GetSimpleValue(pThis, args, 0);
       iNum = (int32_t)ValueToFloat(pThis, argOne.get());
     }
     FX_GUID guid;
     FX_GUID_CreateV4(&guid);
     CFX_ByteString bsUId;
     FX_GUID_ToString(&guid, bsUId, iNum);
     FXJSE_Value_SetUTF8String(args.GetReturnValue(), bsUId.AsStringC());
   } else {
-    CXFA_FM2JSContext* pContext =
-        static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
-    pContext->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"Uuid");
+    ToJSContext(pThis, nullptr)
+        ->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"Uuid");
   }
 }
 
 // static
 void CXFA_FM2JSContext::Upper(CFXJSE_Value* pThis,
                               const CFX_ByteStringC& szFuncName,
                               CFXJSE_Arguments& args) {
   int32_t argc = args.GetLength();
   if ((argc > 0) && (argc < 3)) {
     CFX_ByteString argString;
@@ skipping 21 matching lines @@
         upperStringBuf.AppendChar(ch);
         ++i;
       }
       upperStringBuf.AppendChar(0);
       FXJSE_Value_SetUTF8String(
           args.GetReturnValue(),
           FX_UTF8Encode(upperStringBuf.GetBuffer(), upperStringBuf.GetLength())
               .AsStringC());
     }
   } else {
-    CXFA_FM2JSContext* pContext =
-        static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
-    pContext->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"Upper");
+    ToJSContext(pThis, nullptr)
+        ->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"Upper");
   }
 }
 
 // static
 void CXFA_FM2JSContext::WordNum(CFXJSE_Value* pThis,
                                 const CFX_ByteStringC& szFuncName,
                                 CFXJSE_Arguments& args) {
   int32_t argc = args.GetLength();
   if ((argc > 0) && (argc < 4)) {
     FX_BOOL bFlags = FALSE;
@@ skipping 31 matching lines @@
         CFX_ByteTextBuf resultBuf;
         CFX_ByteString numberString;
         numberString.Format("%.2f", fNumber);
         WordUS(numberString.AsStringC(), iIdentifier, resultBuf);
         FXJSE_Value_SetUTF8String(args.GetReturnValue(), resultBuf.AsStringC());
       }
     } else {
       FXJSE_Value_SetNull(args.GetReturnValue());
     }
   } else {
-    CXFA_FM2JSContext* pContext =
-        static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
-    pContext->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"WordNum");
+    ToJSContext(pThis, nullptr)
+        ->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"WordNum");
   }
 }
 
 // static
 void CXFA_FM2JSContext::TrillionUS(const CFX_ByteStringC& szData,
                                    CFX_ByteTextBuf& strBuf) {
   CFX_ByteStringC pUnits[] = {"zero", "one", "two",   "three", "four",
                               "five", "six", "seven", "eight", "nine"};
   CFX_ByteStringC pCapUnits[] = {"Zero", "One", "Two",   "Three", "Four",
                                  "Five", "Six", "Seven", "Eight", "Nine"};
@@ skipping 184 matching lines @@
     } break;
     default:
       break;
   }
 }
 
 // static
 void CXFA_FM2JSContext::Get(CFXJSE_Value* pThis,
                             const CFX_ByteStringC& szFuncName,
                             CFXJSE_Arguments& args) {
-  CXFA_FM2JSContext* pContext =
-      static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
+  CXFA_FM2JSContext* pContext = ToJSContext(pThis, nullptr);
   if (args.GetLength() == 1) {
     CXFA_Document* pDoc = pContext->GetDocument();
     if (!pDoc) {
       return;
     }
     IXFA_AppProvider* pAppProvider =
         pDoc->GetParser()->GetNotify()->GetAppProvider();
     if (!pAppProvider) {
       return;
     }
@@ skipping 13 matching lines @@
     }
   } else {
     pContext->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"Get");
   }
 }
 
 // static
 void CXFA_FM2JSContext::Post(CFXJSE_Value* pThis,
                              const CFX_ByteStringC& szFuncName,
                              CFXJSE_Arguments& args) {
-  CXFA_FM2JSContext* pContext =
-      static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
+  CXFA_FM2JSContext* pContext = ToJSContext(pThis, nullptr);
   int32_t argc = args.GetLength();
   if ((argc >= 2) && (argc <= 5)) {
     CXFA_Document* pDoc = pContext->GetDocument();
     if (!pDoc) {
       return;
     }
     IXFA_AppProvider* pAppProvider =
         pDoc->GetParser()->GetNotify()->GetAppProvider();
     if (!pAppProvider) {
       return;
@@ skipping 36 matching lines @@
     }
   } else {
     pContext->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"Post");
   }
 }
 
 // static
 void CXFA_FM2JSContext::Put(CFXJSE_Value* pThis,
                             const CFX_ByteStringC& szFuncName,
                             CFXJSE_Arguments& args) {
-  CXFA_FM2JSContext* pContext =
-      static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
+  CXFA_FM2JSContext* pContext = ToJSContext(pThis, nullptr);
   int32_t argc = args.GetLength();
   if ((argc == 2) || (argc == 3)) {
     CXFA_Document* pDoc = pContext->GetDocument();
     if (!pDoc) {
       return;
     }
     IXFA_AppProvider* pAppProvider =
         pDoc->GetParser()->GetNotify()->GetAppProvider();
     if (!pAppProvider) {
       return;
@@ skipping 20 matching lines @@
     }
   } else {
     pContext->ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"Put");
   }
 }
 
 // static
 void CXFA_FM2JSContext::assign_value_operator(CFXJSE_Value* pThis,
                                               const CFX_ByteStringC& szFuncName,
                                               CFXJSE_Arguments& args) {
-  CXFA_FM2JSContext* pContext =
-      static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
+  CXFA_FM2JSContext* pContext = ToJSContext(pThis, nullptr);
   v8::Isolate* pIsolate = pContext->GetScriptRuntime();
   if (args.GetLength() == 2) {
     std::unique_ptr<CFXJSE_Value> lValue = args.GetValue(0);
     std::unique_ptr<CFXJSE_Value> rValue = GetSimpleValue(pThis, args, 1);
     FX_BOOL bSetStatus = TRUE;
     if (FXJSE_Value_IsArray(lValue.get())) {
       std::unique_ptr<CFXJSE_Value> leftLengthValue(new CFXJSE_Value(pIsolate));
       FXJSE_Value_GetObjectProp(lValue.get(), "length", leftLengthValue.get());
       int32_t iLeftLength = FXJSE_Value_ToInteger(leftLengthValue.get());
       std::unique_ptr<CFXJSE_Value> jsObjectValue(new CFXJSE_Value(pIsolate));
@@ skipping 38 matching lines @@
     std::unique_ptr<CFXJSE_Value> argSecond = GetSimpleValue(pThis, args, 1);
     if (FXJSE_Value_IsNull(argFirst.get()) &&
         FXJSE_Value_IsNull(argSecond.get())) {
       FXJSE_Value_SetNull(args.GetReturnValue());
     } else {
       FX_FLOAT first = ValueToFloat(pThis, argFirst.get());
       FX_FLOAT second = ValueToFloat(pThis, argSecond.get());
       FXJSE_Value_SetInteger(args.GetReturnValue(), (first || second) ? 1 : 0);
     }
   } else {
-    CXFA_FM2JSContext* pContext =
-        static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
-    pContext->ThrowException(XFA_IDS_COMPILER_ERROR);
+    ToJSContext(pThis, nullptr)->ThrowException(XFA_IDS_COMPILER_ERROR);
   }
 }
 
 // static
 void CXFA_FM2JSContext::logical_and_operator(CFXJSE_Value* pThis,
                                              const CFX_ByteStringC& szFuncName,
                                              CFXJSE_Arguments& args) {
   if (args.GetLength() == 2) {
     std::unique_ptr<CFXJSE_Value> argFirst = GetSimpleValue(pThis, args, 0);
     std::unique_ptr<CFXJSE_Value> argSecond = GetSimpleValue(pThis, args, 1);
     if (FXJSE_Value_IsNull(argFirst.get()) &&
         FXJSE_Value_IsNull(argSecond.get())) {
       FXJSE_Value_SetNull(args.GetReturnValue());
     } else {
       FX_FLOAT first = ValueToFloat(pThis, argFirst.get());
       FX_FLOAT second = ValueToFloat(pThis, argSecond.get());
       FXJSE_Value_SetInteger(args.GetReturnValue(), (first && second) ? 1 : 0);
     }
   } else {
-    CXFA_FM2JSContext* pContext =
-        static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
-    pContext->ThrowException(XFA_IDS_COMPILER_ERROR);
+    ToJSContext(pThis, nullptr)->ThrowException(XFA_IDS_COMPILER_ERROR);
   }
 }
 
 // static
 void CXFA_FM2JSContext::equality_operator(CFXJSE_Value* pThis,
                                           const CFX_ByteStringC& szFuncName,
                                           CFXJSE_Arguments& args) {
   if (args.GetLength() == 2) {
     if (fm_ref_equal(pThis, args)) {
       FXJSE_Value_SetInteger(args.GetReturnValue(), 1);
@@ skipping 16 matching lines @@
         FXJSE_Value_SetInteger(args.GetReturnValue(),
                                firstOutput == secondOutput);
       } else {
         FX_DOUBLE first = ValueToDouble(pThis, argFirst.get());
         FX_DOUBLE second = ValueToDouble(pThis, argSecond.get());
         FXJSE_Value_SetInteger(args.GetReturnValue(),
                                (first == second) ? 1 : 0);
       }
     }
   } else {
-    CXFA_FM2JSContext* pContext =
-        static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
-    pContext->ThrowException(XFA_IDS_COMPILER_ERROR);
+    ToJSContext(pThis, nullptr)->ThrowException(XFA_IDS_COMPILER_ERROR);
   }
 }
 
 // static
 void CXFA_FM2JSContext::notequality_operator(CFXJSE_Value* pThis,
                                              const CFX_ByteStringC& szFuncName,
                                              CFXJSE_Arguments& args) {
   if (args.GetLength() == 2) {
     if (fm_ref_equal(pThis, args)) {
       FXJSE_Value_SetInteger(args.GetReturnValue(), 0);
@@ skipping 15 matching lines @@
         FXJSE_Value_ToUTF8String(argSecond.get(), secondOutput);
         FXJSE_Value_SetInteger(args.GetReturnValue(),
                                firstOutput != secondOutput);
       } else {
         FX_DOUBLE first = ValueToDouble(pThis, argFirst.get());
         FX_DOUBLE second = ValueToDouble(pThis, argSecond.get());
         FXJSE_Value_SetInteger(args.GetReturnValue(), first != second);
       }
     }
   } else {
-    CXFA_FM2JSContext* pContext =
-        static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
-    pContext->ThrowException(XFA_IDS_COMPILER_ERROR);
+    ToJSContext(pThis, nullptr)->ThrowException(XFA_IDS_COMPILER_ERROR);
   }
 }
 
 // static
 FX_BOOL CXFA_FM2JSContext::fm_ref_equal(CFXJSE_Value* pThis,
                                         CFXJSE_Arguments& args) {
   FX_BOOL bRet = FALSE;
-  CXFA_FM2JSContext* pContext =
-      static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
-  v8::Isolate* pIsolate = pContext->GetScriptRuntime();
+  v8::Isolate* pIsolate = ToJSContext(pThis, nullptr)->GetScriptRuntime();
   std::unique_ptr<CFXJSE_Value> argFirst = args.GetValue(0);
   std::unique_ptr<CFXJSE_Value> argSecond = args.GetValue(1);
   if (FXJSE_Value_IsArray(argFirst.get()) &&
       FXJSE_Value_IsArray(argSecond.get())) {
     std::unique_ptr<CFXJSE_Value> firstFlagValue(new CFXJSE_Value(pIsolate));
     std::unique_ptr<CFXJSE_Value> secondFlagValue(new CFXJSE_Value(pIsolate));
     FXJSE_Value_GetObjectPropByIdx(argFirst.get(), 0, firstFlagValue.get());
     FXJSE_Value_GetObjectPropByIdx(argSecond.get(), 0, secondFlagValue.get());
     if ((FXJSE_Value_ToInteger(firstFlagValue.get()) == 3) &&
         (FXJSE_Value_ToInteger(secondFlagValue.get()) == 3)) {
       std::unique_ptr<CFXJSE_Value> firstJSObject(new CFXJSE_Value(pIsolate));
       std::unique_ptr<CFXJSE_Value> secondJSObject(new CFXJSE_Value(pIsolate));
       FXJSE_Value_GetObjectPropByIdx(argFirst.get(), 2, firstJSObject.get());
       FXJSE_Value_GetObjectPropByIdx(argSecond.get(), 2, secondJSObject.get());
       if (!FXJSE_Value_IsNull(firstJSObject.get()) &&
           !FXJSE_Value_IsNull(secondJSObject.get())) {
-        bRet = (FXJSE_Value_ToObject(firstJSObject.get(), nullptr) ==
-                FXJSE_Value_ToObject(secondJSObject.get(), nullptr));
+        bRet = (firstJSObject->ToHostObject(nullptr) ==
+                secondJSObject->ToHostObject(nullptr));
       }
     }
   }
   return bRet;
 }
 
 // static
 void CXFA_FM2JSContext::less_operator(CFXJSE_Value* pThis,
                                       const CFX_ByteStringC& szFuncName,
                                       CFXJSE_Arguments& args) {
@@ skipping 11 matching lines @@
       FXJSE_Value_ToUTF8String(argSecond.get(), secondOutput);
       FXJSE_Value_SetInteger(
           args.GetReturnValue(),
           firstOutput.Compare(secondOutput.AsStringC()) == -1);
     } else {
       FX_DOUBLE first = ValueToDouble(pThis, argFirst.get());
       FX_DOUBLE second = ValueToDouble(pThis, argSecond.get());
       FXJSE_Value_SetInteger(args.GetReturnValue(), (first < second) ? 1 : 0);
     }
   } else {
-    CXFA_FM2JSContext* pContext =
-        static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
-    pContext->ThrowException(XFA_IDS_COMPILER_ERROR);
+    ToJSContext(pThis, nullptr)->ThrowException(XFA_IDS_COMPILER_ERROR);
   }
 }
 
 // static
 void CXFA_FM2JSContext::lessequal_operator(CFXJSE_Value* pThis,
                                            const CFX_ByteStringC& szFuncName,
                                            CFXJSE_Arguments& args) {
   if (args.GetLength() == 2) {
     std::unique_ptr<CFXJSE_Value> argFirst = GetSimpleValue(pThis, args, 0);
     std::unique_ptr<CFXJSE_Value> argSecond = GetSimpleValue(pThis, args, 1);
@@ skipping 12 matching lines @@
       FXJSE_Value_ToUTF8String(argSecond.get(), secondOutput);
       FXJSE_Value_SetInteger(
           args.GetReturnValue(),
           firstOutput.Compare(secondOutput.AsStringC()) != 1);
     } else {
       FX_DOUBLE first = ValueToDouble(pThis, argFirst.get());
       FX_DOUBLE second = ValueToDouble(pThis, argSecond.get());
       FXJSE_Value_SetInteger(args.GetReturnValue(), (first <= second) ? 1 : 0);
     }
   } else {
-    CXFA_FM2JSContext* pContext =
-        static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
-    pContext->ThrowException(XFA_IDS_COMPILER_ERROR);
+    ToJSContext(pThis, nullptr)->ThrowException(XFA_IDS_COMPILER_ERROR);
   }
 }
 
 // static
 void CXFA_FM2JSContext::greater_operator(CFXJSE_Value* pThis,
                                          const CFX_ByteStringC& szFuncName,
                                          CFXJSE_Arguments& args) {
   if (args.GetLength() == 2) {
     std::unique_ptr<CFXJSE_Value> argFirst = GetSimpleValue(pThis, args, 0);
     std::unique_ptr<CFXJSE_Value> argSecond = GetSimpleValue(pThis, args, 1);
     if (FXJSE_Value_IsNull(argFirst.get()) ||
         FXJSE_Value_IsNull(argSecond.get())) {
       FXJSE_Value_SetInteger(args.GetReturnValue(), 0);
     } else if (FXJSE_Value_IsUTF8String(argFirst.get()) &&
                FXJSE_Value_IsUTF8String(argSecond.get())) {
       CFX_ByteString firstOutput;
       CFX_ByteString secondOutput;
       FXJSE_Value_ToUTF8String(argFirst.get(), firstOutput);
       FXJSE_Value_ToUTF8String(argSecond.get(), secondOutput);
       FXJSE_Value_SetInteger(
           args.GetReturnValue(),
           firstOutput.Compare(secondOutput.AsStringC()) == 1);
     } else {
       FX_DOUBLE first = ValueToDouble(pThis, argFirst.get());
       FX_DOUBLE second = ValueToDouble(pThis, argSecond.get());
       FXJSE_Value_SetInteger(args.GetReturnValue(), (first > second) ? 1 : 0);
     }
   } else {
-    CXFA_FM2JSContext* pContext =
-        static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
-    pContext->ThrowException(XFA_IDS_COMPILER_ERROR);
+    ToJSContext(pThis, nullptr)->ThrowException(XFA_IDS_COMPILER_ERROR);
   }
 }
 
 // static
 void CXFA_FM2JSContext::greaterequal_operator(CFXJSE_Value* pThis,
                                               const CFX_ByteStringC& szFuncName,
                                               CFXJSE_Arguments& args) {
   if (args.GetLength() == 2) {
     std::unique_ptr<CFXJSE_Value> argFirst = GetSimpleValue(pThis, args, 0);
     std::unique_ptr<CFXJSE_Value> argSecond = GetSimpleValue(pThis, args, 1);
@@ skipping 12 matching lines @@
       FXJSE_Value_ToUTF8String(argSecond.get(), secondOutput);
       FXJSE_Value_SetInteger(
           args.GetReturnValue(),
           firstOutput.Compare(secondOutput.AsStringC()) != -1);
     } else {
       FX_DOUBLE first = ValueToDouble(pThis, argFirst.get());
       FX_DOUBLE second = ValueToDouble(pThis, argSecond.get());
       FXJSE_Value_SetInteger(args.GetReturnValue(), (first >= second) ? 1 : 0);
     }
   } else {
-    CXFA_FM2JSContext* pContext =
-        static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
-    pContext->ThrowException(XFA_IDS_COMPILER_ERROR);
+    ToJSContext(pThis, nullptr)->ThrowException(XFA_IDS_COMPILER_ERROR);
   }
 }
 
 // static
 void CXFA_FM2JSContext::plus_operator(CFXJSE_Value* pThis,
                                       const CFX_ByteStringC& szFuncName,
                                       CFXJSE_Arguments& args) {
   if (args.GetLength() == 2) {
     std::unique_ptr<CFXJSE_Value> argFirst = args.GetValue(0);
     std::unique_ptr<CFXJSE_Value> argSecond = args.GetValue(1);
     if (ValueIsNull(pThis, argFirst.get()) &&
         ValueIsNull(pThis, argSecond.get())) {
       FXJSE_Value_SetNull(args.GetReturnValue());
     } else {
       FX_DOUBLE first = ValueToDouble(pThis, argFirst.get());
       FX_DOUBLE second = ValueToDouble(pThis, argSecond.get());
       FXJSE_Value_SetDouble(args.GetReturnValue(), first + second);
     }
   } else {
-    CXFA_FM2JSContext* pContext =
-        static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
-    pContext->ThrowException(XFA_IDS_COMPILER_ERROR);
+    ToJSContext(pThis, nullptr)->ThrowException(XFA_IDS_COMPILER_ERROR);
   }
 }
 
 // static
 void CXFA_FM2JSContext::minus_operator(CFXJSE_Value* pThis,
                                        const CFX_ByteStringC& szFuncName,
                                        CFXJSE_Arguments& args) {
   if (args.GetLength() == 2) {
     std::unique_ptr<CFXJSE_Value> argFirst = GetSimpleValue(pThis, args, 0);
     std::unique_ptr<CFXJSE_Value> argSecond = GetSimpleValue(pThis, args, 1);
     if (FXJSE_Value_IsNull(argFirst.get()) &&
         FXJSE_Value_IsNull(argSecond.get())) {
       FXJSE_Value_SetNull(args.GetReturnValue());
     } else {
       FX_DOUBLE first = ValueToDouble(pThis, argFirst.get());
       FX_DOUBLE second = ValueToDouble(pThis, argSecond.get());
       FXJSE_Value_SetDouble(args.GetReturnValue(), first - second);
     }
   } else {
-    CXFA_FM2JSContext* pContext =
-        static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
-    pContext->ThrowException(XFA_IDS_COMPILER_ERROR);
+    ToJSContext(pThis, nullptr)->ThrowException(XFA_IDS_COMPILER_ERROR);
   }
 }
 
 // static
 void CXFA_FM2JSContext::multiple_operator(CFXJSE_Value* pThis,
                                           const CFX_ByteStringC& szFuncName,
                                           CFXJSE_Arguments& args) {
   if (args.GetLength() == 2) {
     std::unique_ptr<CFXJSE_Value> argFirst = GetSimpleValue(pThis, args, 0);
     std::unique_ptr<CFXJSE_Value> argSecond = GetSimpleValue(pThis, args, 1);
     if (FXJSE_Value_IsNull(argFirst.get()) &&
         FXJSE_Value_IsNull(argSecond.get())) {
       FXJSE_Value_SetNull(args.GetReturnValue());
     } else {
       FX_DOUBLE first = ValueToDouble(pThis, argFirst.get());
       FX_DOUBLE second = ValueToDouble(pThis, argSecond.get());
       FXJSE_Value_SetDouble(args.GetReturnValue(), first * second);
     }
   } else {
-    CXFA_FM2JSContext* pContext =
-        static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
-    pContext->ThrowException(XFA_IDS_COMPILER_ERROR);
+    ToJSContext(pThis, nullptr)->ThrowException(XFA_IDS_COMPILER_ERROR);
   }
 }
 
 // static
 void CXFA_FM2JSContext::divide_operator(CFXJSE_Value* pThis,
                                         const CFX_ByteStringC& szFuncName,
                                         CFXJSE_Arguments& args) {
-  CXFA_FM2JSContext* pContext =
-      static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
+  CXFA_FM2JSContext* pContext = ToJSContext(pThis, nullptr);
   if (args.GetLength() == 2) {
     std::unique_ptr<CFXJSE_Value> argFirst = GetSimpleValue(pThis, args, 0);
     std::unique_ptr<CFXJSE_Value> argSecond = GetSimpleValue(pThis, args, 1);
     if (FXJSE_Value_IsNull(argFirst.get()) &&
         FXJSE_Value_IsNull(argSecond.get())) {
       FXJSE_Value_SetNull(args.GetReturnValue());
     } else {
       FX_DOUBLE first = ValueToDouble(pThis, argFirst.get());
       FX_DOUBLE second = ValueToDouble(pThis, argSecond.get());
       if (second == 0.0) {
@@ skipping 13 matching lines @@
                                           CFXJSE_Arguments& args) {
   if (args.GetLength() == 1) {
     std::unique_ptr<CFXJSE_Value> argOne = GetSimpleValue(pThis, args, 0);
     if (FXJSE_Value_IsNull(argOne.get())) {
       FXJSE_Value_SetNull(args.GetReturnValue());
     } else {
       FXJSE_Value_SetDouble(args.GetReturnValue(),
                             0.0 + ValueToDouble(pThis, argOne.get()));
     }
   } else {
-    CXFA_FM2JSContext* pContext =
-        static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
-    pContext->ThrowException(XFA_IDS_COMPILER_ERROR);
+    ToJSContext(pThis, nullptr)->ThrowException(XFA_IDS_COMPILER_ERROR);
   }
 }
 
 // static
 void CXFA_FM2JSContext::negative_operator(CFXJSE_Value* pThis,
                                           const CFX_ByteStringC& szFuncName,
                                           CFXJSE_Arguments& args) {
   if (args.GetLength() == 1) {
     std::unique_ptr<CFXJSE_Value> argOne = GetSimpleValue(pThis, args, 0);
     if (FXJSE_Value_IsNull(argOne.get())) {
       FXJSE_Value_SetNull(args.GetReturnValue());
     } else {
       FXJSE_Value_SetDouble(args.GetReturnValue(),
                             0.0 - ValueToDouble(pThis, argOne.get()));
     }
   } else {
-    CXFA_FM2JSContext* pContext =
-        static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
-    pContext->ThrowException(XFA_IDS_COMPILER_ERROR);
+    ToJSContext(pThis, nullptr)->ThrowException(XFA_IDS_COMPILER_ERROR);
   }
 }
 
 // static
 void CXFA_FM2JSContext::logical_not_operator(CFXJSE_Value* pThis,
                                              const CFX_ByteStringC& szFuncName,
                                              CFXJSE_Arguments& args) {
   if (args.GetLength() == 1) {
     std::unique_ptr<CFXJSE_Value> argOne = GetSimpleValue(pThis, args, 0);
     if (FXJSE_Value_IsNull(argOne.get())) {
       FXJSE_Value_SetNull(args.GetReturnValue());
     } else {
       FX_DOUBLE first = ValueToDouble(pThis, argOne.get());
       FXJSE_Value_SetInteger(args.GetReturnValue(), (first == 0.0) ? 1 : 0);
     }
   } else {
-    CXFA_FM2JSContext* pContext =
-        static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
-    pContext->ThrowException(XFA_IDS_COMPILER_ERROR);
+    ToJSContext(pThis, nullptr)->ThrowException(XFA_IDS_COMPILER_ERROR);
   }
 }
 
 // static
 void CXFA_FM2JSContext::dot_accessor(CFXJSE_Value* pThis,
                                      const CFX_ByteStringC& szFuncName,
                                      CFXJSE_Arguments& args) {
-  CXFA_FM2JSContext* pContext =
-      static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
+  CXFA_FM2JSContext* pContext = ToJSContext(pThis, nullptr);
   v8::Isolate* pIsolate = pContext->GetScriptRuntime();
   int32_t argc = args.GetLength();
   if ((argc == 4) || (argc == 5)) {
     FX_BOOL bIsStar = TRUE;
     std::unique_ptr<CFXJSE_Value> argAccessor = args.GetValue(0);
     CFX_ByteString bsAccessorName = args.GetUTF8String(1);
     CFX_ByteString szName = args.GetUTF8String(2);
     int32_t iIndexFlags = args.GetInt32(3);
     int32_t iIndexValue = 0;
     if (argc == 5) {
@@ skipping 127 matching lines @@
     }
   } else {
     pContext->ThrowException(XFA_IDS_COMPILER_ERROR);
   }
 }
 
 // static
 void CXFA_FM2JSContext::dotdot_accessor(CFXJSE_Value* pThis,
                                         const CFX_ByteStringC& szFuncName,
                                         CFXJSE_Arguments& args) {
-  CXFA_FM2JSContext* pContext =
-      static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
+  CXFA_FM2JSContext* pContext = ToJSContext(pThis, nullptr);
   v8::Isolate* pIsolate = pContext->GetScriptRuntime();
   int32_t argc = args.GetLength();
   if ((argc == 4) || (argc == 5)) {
     FX_BOOL bIsStar = TRUE;
     std::unique_ptr<CFXJSE_Value> argAccessor = args.GetValue(0);
     CFX_ByteString bsAccessorName = args.GetUTF8String(1);
     CFX_ByteString szName = args.GetUTF8String(2);
     int32_t iIndexFlags = args.GetInt32(3);
     int32_t iIndexValue = 0;
     if (argc == 5) {
@@ skipping 122 matching lines @@
     }
   } else {
     pContext->ThrowException(XFA_IDS_COMPILER_ERROR);
   }
 }
 
 // static
 void CXFA_FM2JSContext::eval_translation(CFXJSE_Value* pThis,
                                          const CFX_ByteStringC& szFuncName,
                                          CFXJSE_Arguments& args) {
-  CXFA_FM2JSContext* pContext =
-      static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
+  CXFA_FM2JSContext* pContext = ToJSContext(pThis, nullptr);
   if (args.GetLength() == 1) {
     std::unique_ptr<CFXJSE_Value> argOne = GetSimpleValue(pThis, args, 0);
     CFX_ByteString argString;
     ValueToUTF8String(argOne.get(), argString);
     if (argString.IsEmpty()) {
       pContext->ThrowException(XFA_IDS_ARGUMENT_MISMATCH);
     } else {
       CFX_WideString scriptString =
           CFX_WideString::FromUTF8(argString.AsStringC());
       CFX_WideTextBuf wsJavaScriptBuf;
@@ skipping 38 matching lines @@
     FXJSE_Value_SetBoolean(args.GetReturnValue(), bIsArray);
   } else {
     FXJSE_Value_SetBoolean(args.GetReturnValue(), FALSE);
   }
 }
 
 // static
 void CXFA_FM2JSContext::get_fm_value(CFXJSE_Value* pThis,
                                      const CFX_ByteStringC& szFuncName,
                                      CFXJSE_Arguments& args) {
-  CXFA_FM2JSContext* pContext =
-      static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
+  CXFA_FM2JSContext* pContext = ToJSContext(pThis, nullptr);
   v8::Isolate* pIsolate = pContext->GetScriptRuntime();
   if (args.GetLength() == 1) {
     std::unique_ptr<CFXJSE_Value> argOne = args.GetValue(0);
     if (FXJSE_Value_IsArray(argOne.get())) {
       std::unique_ptr<CFXJSE_Value> propertyValue(new CFXJSE_Value(pIsolate));
       std::unique_ptr<CFXJSE_Value> jsObjectValue(new CFXJSE_Value(pIsolate));
       FXJSE_Value_GetObjectPropByIdx(argOne.get(), 1, propertyValue.get());
       FXJSE_Value_GetObjectPropByIdx(argOne.get(), 2, jsObjectValue.get());
       if (FXJSE_Value_IsNull(propertyValue.get())) {
         GetObjectDefaultValue(jsObjectValue.get(), args.GetReturnValue());
@@ skipping 14 matching lines @@
 }
 
 // static
 void CXFA_FM2JSContext::get_fm_jsobj(CFXJSE_Value* pThis,
                                      const CFX_ByteStringC& szFuncName,
                                      CFXJSE_Arguments& args) {
   if (args.GetLength() == 1) {
     std::unique_ptr<CFXJSE_Value> argOne = args.GetValue(0);
     if (FXJSE_Value_IsArray(argOne.get())) {
 #ifndef NDEBUG
-      CXFA_FM2JSContext* pContext =
-          static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
+      CXFA_FM2JSContext* pContext = ToJSContext(pThis, nullptr);
       v8::Isolate* pIsolate = pContext->GetScriptRuntime();
       std::unique_ptr<CFXJSE_Value> lengthValue(new CFXJSE_Value(pIsolate));
       FXJSE_Value_GetObjectProp(argOne.get(), "length", lengthValue.get());
       ASSERT(FXJSE_Value_ToInteger(lengthValue.get()) >= 3);
 #endif
       FXJSE_Value_GetObjectPropByIdx(argOne.get(), 2, args.GetReturnValue());
     } else {
       FXJSE_Value_Set(args.GetReturnValue(), argOne.get());
     }
   } else {
-    CXFA_FM2JSContext* pContext =
-        static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
+    CXFA_FM2JSContext* pContext = ToJSContext(pThis, nullptr);
     pContext->ThrowException(XFA_IDS_COMPILER_ERROR);
   }
 }
 
 // static
 void CXFA_FM2JSContext::fm_var_filter(CFXJSE_Value* pThis,
                                       const CFX_ByteStringC& szFuncName,
                                       CFXJSE_Arguments& args) {
-  CXFA_FM2JSContext* pContext =
-      static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
+  CXFA_FM2JSContext* pContext = ToJSContext(pThis, nullptr);
   v8::Isolate* pIsolate = pContext->GetScriptRuntime();
   if (args.GetLength() == 1) {
     std::unique_ptr<CFXJSE_Value> argOne = args.GetValue(0);
     if (FXJSE_Value_IsArray(argOne.get())) {
 #ifndef NDEBUG
       std::unique_ptr<CFXJSE_Value> lengthValue(new CFXJSE_Value(pIsolate));
       FXJSE_Value_GetObjectProp(argOne.get(), "length", lengthValue.get());
       ASSERT(FXJSE_Value_ToInteger(lengthValue.get()) >= 3);
 #endif
       std::unique_ptr<CFXJSE_Value> flagsValue(new CFXJSE_Value(pIsolate));
@@ skipping 30 matching lines @@
     }
   } else {
     pContext->ThrowException(XFA_IDS_COMPILER_ERROR);
   }
 }
 
 // static
 void CXFA_FM2JSContext::concat_fm_object(CFXJSE_Value* pThis,
                                          const CFX_ByteStringC& szFuncName,
                                          CFXJSE_Arguments& args) {
-  CXFA_FM2JSContext* pContext =
-      static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
-  v8::Isolate* pIsolate = pContext->GetScriptRuntime();
+  v8::Isolate* pIsolate = ToJSContext(pThis, nullptr)->GetScriptRuntime();
   uint32_t iLength = 0;
   int32_t argc = args.GetLength();
   std::vector<std::unique_ptr<CFXJSE_Value>> argValues;
   for (int32_t i = 0; i < argc; i++) {
     argValues.push_back(args.GetValue(i));
     if (FXJSE_Value_IsArray(argValues[i].get())) {
       std::unique_ptr<CFXJSE_Value> lengthValue(new CFXJSE_Value(pIsolate));
       FXJSE_Value_GetObjectProp(argValues[i].get(), "length",
                                 lengthValue.get());
       int32_t length = FXJSE_Value_ToInteger(lengthValue.get());
@@ skipping 26 matching lines @@
     delete returnValues[i];
 
   FX_Free(returnValues);
 }
 
 // static
 std::unique_ptr<CFXJSE_Value> CXFA_FM2JSContext::GetSimpleValue(
     CFXJSE_Value* pThis,
     CFXJSE_Arguments& args,
     uint32_t index) {
-  CXFA_FM2JSContext* pContext =
-      static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
-  v8::Isolate* pIsolate = pContext->GetScriptRuntime();
+  v8::Isolate* pIsolate = ToJSContext(pThis, nullptr)->GetScriptRuntime();
   ASSERT(index < (uint32_t)args.GetLength());
   std::unique_ptr<CFXJSE_Value> argIndex = args.GetValue(index);
   if (FXJSE_Value_IsArray(argIndex.get())) {
     std::unique_ptr<CFXJSE_Value> lengthValue(new CFXJSE_Value(pIsolate));
     FXJSE_Value_GetObjectProp(argIndex.get(), "length", lengthValue.get());
     int32_t iLength = FXJSE_Value_ToInteger(lengthValue.get());
     std::unique_ptr<CFXJSE_Value> simpleValue(new CFXJSE_Value(pIsolate));
     if (iLength > 2) {
       std::unique_ptr<CFXJSE_Value> propertyValue(new CFXJSE_Value(pIsolate));
       std::unique_ptr<CFXJSE_Value> jsObjectValue(new CFXJSE_Value(pIsolate));
@@ skipping 15 matching lines @@
     std::unique_ptr<CFXJSE_Value> defaultValue(new CFXJSE_Value(pIsolate));
     GetObjectDefaultValue(argIndex.get(), defaultValue.get());
     return defaultValue;
   } else {
     return argIndex;
   }
 }
 
 // static
 FX_BOOL CXFA_FM2JSContext::ValueIsNull(CFXJSE_Value* pThis, CFXJSE_Value* arg) {
-  CXFA_FM2JSContext* pContext =
-      static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
-  v8::Isolate* pIsolate = pContext->GetScriptRuntime();
+  v8::Isolate* pIsolate = ToJSContext(pThis, nullptr)->GetScriptRuntime();
   FX_BOOL isNull = FALSE;
   if (FXJSE_Value_IsNull(arg)) {
     isNull = TRUE;
   } else if (FXJSE_Value_IsArray(arg)) {
     int32_t iLength = hvalue_get_array_length(pThis, arg);
     if (iLength > 2) {
       std::unique_ptr<CFXJSE_Value> propertyValue(new CFXJSE_Value(pIsolate));
       std::unique_ptr<CFXJSE_Value> jsObjectValue(new CFXJSE_Value(pIsolate));
       FXJSE_Value_GetObjectPropByIdx(arg, 1, propertyValue.get());
       FXJSE_Value_GetObjectPropByIdx(arg, 2, jsObjectValue.get());
@@ skipping 23 matching lines @@
     if (FXJSE_Value_IsNull(defaultValue.get())) {
       isNull = TRUE;
     }
   }
   return isNull;
 }
 
 // static
 int32_t CXFA_FM2JSContext::hvalue_get_array_length(CFXJSE_Value* pThis,
                                                    CFXJSE_Value* arg) {
-  CXFA_FM2JSContext* pContext =
-      static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
-  v8::Isolate* pIsolate = pContext->GetScriptRuntime();
+  v8::Isolate* pIsolate = ToJSContext(pThis, nullptr)->GetScriptRuntime();
   int32_t iLength = 0;
   if (FXJSE_Value_IsArray(arg)) {
     std::unique_ptr<CFXJSE_Value> lengthValue(new CFXJSE_Value(pIsolate));
     FXJSE_Value_GetObjectProp(arg, "length", lengthValue.get());
     iLength = FXJSE_Value_ToInteger(lengthValue.get());
   }
   return iLength;
 }
 
 // static
@@ skipping 19 matching lines @@
   }
   return bReturn;
 }
 
 // static
 void CXFA_FM2JSContext::unfoldArgs(CFXJSE_Value* pThis,
                                    CFXJSE_Arguments& args,
                                    CFXJSE_Value**& resultValues,
                                    int32_t& iCount,
                                    int32_t iStart) {
-  CXFA_FM2JSContext* pContext =
-      static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
-  v8::Isolate* pIsolate = pContext->GetScriptRuntime();
+  v8::Isolate* pIsolate = ToJSContext(pThis, nullptr)->GetScriptRuntime();
   iCount = 0;
   int32_t argc = args.GetLength();
   std::vector<std::unique_ptr<CFXJSE_Value>> argsValue;
   for (int32_t i = 0; i < argc - iStart; i++) {
     argsValue.push_back(args.GetValue(i + iStart));
     if (FXJSE_Value_IsArray(argsValue[i].get())) {
       std::unique_ptr<CFXJSE_Value> lengthValue(new CFXJSE_Value(pIsolate));
       FXJSE_Value_GetObjectProp(argsValue[i].get(), "length",
                                 lengthValue.get());
       int32_t iLength = FXJSE_Value_ToInteger(lengthValue.get());
@@ skipping 42 matching lines @@
       GetObjectDefaultValue(argsValue[i].get(), resultValues[index]);
       index++;
     } else {
       FXJSE_Value_Set(resultValues[index], argsValue[i].get());
       index++;
     }
   }
 }
 
 // static
-void CXFA_FM2JSContext::GetObjectDefaultValue(CFXJSE_Value* pObjectValue,
+void CXFA_FM2JSContext::GetObjectDefaultValue(CFXJSE_Value* pValue,
                                               CFXJSE_Value* pDefaultValue) {
-  CXFA_Node* pNode =
-      ToNode((CXFA_Object*)FXJSE_Value_ToObject(pObjectValue, nullptr));
-  if (pNode) {
-    pNode->Script_Som_DefaultValue(pDefaultValue, FALSE, (XFA_ATTRIBUTE)-1);
-  } else {
+  CXFA_Node* pNode = ToNode(CXFA_ScriptContext::ToObject(pValue, nullptr));
+  if (!pNode) {
     FXJSE_Value_SetNull(pDefaultValue);
+    return;
   }
+  pNode->Script_Som_DefaultValue(pDefaultValue, FALSE, (XFA_ATTRIBUTE)-1);
 }
 
 // static
-FX_BOOL CXFA_FM2JSContext::SetObjectDefaultValue(CFXJSE_Value* pObjectValue,
+FX_BOOL CXFA_FM2JSContext::SetObjectDefaultValue(CFXJSE_Value* pValue,
                                                  CFXJSE_Value* hNewValue) {
-  CXFA_Node* pNode =
-      ToNode((CXFA_Object*)FXJSE_Value_ToObject(pObjectValue, nullptr));
-  if (pNode) {
-    pNode->Script_Som_DefaultValue(hNewValue, TRUE, (XFA_ATTRIBUTE)-1);
-    return TRUE;
-  }
-  return FALSE;
+  CXFA_Node* pNode = ToNode(CXFA_ScriptContext::ToObject(pValue, nullptr));
+  if (!pNode)
+    return FALSE;
+
+  pNode->Script_Som_DefaultValue(hNewValue, TRUE, (XFA_ATTRIBUTE)-1);
+  return TRUE;
 }
 
 // static
 void CXFA_FM2JSContext::GenerateSomExpression(const CFX_ByteStringC& szName,
                                               int32_t iIndexFlags,
                                               int32_t iIndexValue,
                                               FX_BOOL bIsStar,
                                               CFX_ByteString& szSomExp) {
   if (bIsStar) {
     szSomExp = szName + "[*]";
@@ skipping 19 matching lines @@
     szSomExp += "]";
   }
 }
 
 // static
 FX_BOOL CXFA_FM2JSContext::GetObjectByName(
     CFXJSE_Value* pThis,
     CFXJSE_Value* accessorValue,
     const CFX_ByteStringC& szAccessorName) {
   FX_BOOL bFlags = FALSE;
-  CXFA_FM2JSContext* pContext =
-      static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
-  CXFA_Document* pDoc = pContext->GetDocument();
+  CXFA_Document* pDoc = ToJSContext(pThis, nullptr)->GetDocument();
   if (!pDoc) {
     return bFlags;
   }
   CXFA_ScriptContext* pScriptContext = pDoc->GetScriptContext();
   XFA_RESOLVENODE_RS resoveNodeRS;
   uint32_t dwFlags = XFA_RESOLVENODE_Children | XFA_RESOLVENODE_Properties |
                      XFA_RESOLVENODE_Siblings | XFA_RESOLVENODE_Parent;
   int32_t iRet = pScriptContext->ResolveObjects(
       pScriptContext->GetThisObject(),
       CFX_WideString::FromUTF8(szAccessorName).AsStringC(), resoveNodeRS,
       dwFlags);
   if (iRet >= 1 && resoveNodeRS.dwFlags == XFA_RESOVENODE_RSTYPE_Nodes) {
     FXJSE_Value_Set(accessorValue, pScriptContext->GetJSValueFromMap(
                                        resoveNodeRS.nodes.GetAt(0)));
     bFlags = TRUE;
   }
   return bFlags;
 }
 
 // static
 int32_t CXFA_FM2JSContext::ResolveObjects(CFXJSE_Value* pThis,
                                           CFXJSE_Value* pRefValue,
                                           const CFX_ByteStringC& bsSomExp,
                                           XFA_RESOLVENODE_RS& resoveNodeRS,
                                           FX_BOOL bdotAccessor,
                                           FX_BOOL bHasNoResolveName) {
   CFX_WideString wsSomExpression = CFX_WideString::FromUTF8(bsSomExp);
   int32_t iRet = -1;
-  CXFA_FM2JSContext* pContext =
-      static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
-  CXFA_Document* pDoc = pContext->GetDocument();
+  CXFA_Document* pDoc = ToJSContext(pThis, nullptr)->GetDocument();
   if (!pDoc) {
     return iRet;
   }
   CXFA_ScriptContext* pScriptContext = pDoc->GetScriptContext();
   CXFA_Object* pNode = nullptr;
   uint32_t dFlags = 0UL;
   if (bdotAccessor) {
     if (FXJSE_Value_IsNull(pRefValue)) {
       pNode = pScriptContext->GetThisObject();
       dFlags = XFA_RESOLVENODE_Siblings | XFA_RESOLVENODE_Parent;
     } else {
-      pNode = (CXFA_Object*)FXJSE_Value_ToObject(pRefValue, nullptr);
+      pNode = CXFA_ScriptContext::ToObject(pRefValue, nullptr);
       ASSERT(pNode);
       if (bHasNoResolveName) {
         CFX_WideString wsName;
         if (CXFA_Node* pXFANode = pNode->AsNode()) {
           pXFANode->GetAttribute(XFA_ATTRIBUTE_Name, wsName, FALSE);
         }
         if (wsName.IsEmpty()) {
           CFX_WideStringC className;
           pNode->GetClassName(className);
           wsName = FX_WSTRC(L"#") + className;
         }
         wsSomExpression = wsName + wsSomExpression;
         dFlags = XFA_RESOLVENODE_Siblings;
       } else {
         dFlags = (bsSomExp == "*")
                      ? (XFA_RESOLVENODE_Children)
                      : (XFA_RESOLVENODE_Children | XFA_RESOLVENODE_Attributes |
                         XFA_RESOLVENODE_Properties);
       }
     }
   } else {
-    pNode = (CXFA_Object*)FXJSE_Value_ToObject(pRefValue, nullptr);
+    pNode = CXFA_ScriptContext::ToObject(pRefValue, nullptr);
     dFlags = XFA_RESOLVENODE_AnyChild;
   }
   iRet = pScriptContext->ResolveObjects(pNode, wsSomExpression.AsStringC(),
                                         resoveNodeRS, dFlags);
   return iRet;
 }
 
 // static
 void CXFA_FM2JSContext::ParseResolveResult(
     CFXJSE_Value* pThis,
     const XFA_RESOLVENODE_RS& resoveNodeRS,
     CFXJSE_Value* pParentValue,
     CFXJSE_Value**& resultValues,
     int32_t& iSize,
     FX_BOOL& bAttribute) {
-  CXFA_FM2JSContext* pContext =
-      static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
+  CXFA_FM2JSContext* pContext = ToJSContext(pThis, nullptr);
   v8::Isolate* pIsolate = pContext->GetScriptRuntime();
   iSize = 0;
   resultValues = nullptr;
   if (resoveNodeRS.dwFlags == XFA_RESOVENODE_RSTYPE_Nodes) {
     bAttribute = FALSE;
     iSize = resoveNodeRS.nodes.GetSize();
     resultValues = FX_Alloc(CFXJSE_Value*, iSize);
     for (int32_t i = 0; i < iSize; i++) {
       resultValues[i] = new CFXJSE_Value(pIsolate);
       FXJSE_Value_Set(
@@ skipping 19 matching lines @@
         resultValues[i] = new CFXJSE_Value(pIsolate);
         FXJSE_Value_Set(resultValues[i], objectProperties[i]);
       }
     }
   }
 }
 
 // static
 int32_t CXFA_FM2JSContext::ValueToInteger(CFXJSE_Value* pThis,
                                           CFXJSE_Value* pValue) {
-  CXFA_FM2JSContext* pContext =
-      static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
-  v8::Isolate* pIsolate = pContext->GetScriptRuntime();
+  v8::Isolate* pIsolate = ToJSContext(pThis, nullptr)->GetScriptRuntime();
   int32_t iValue = 0;
   if (FXJSE_Value_IsArray(pValue)) {
     std::unique_ptr<CFXJSE_Value> propertyValue(new CFXJSE_Value(pIsolate));
     std::unique_ptr<CFXJSE_Value> jsObjectValue(new CFXJSE_Value(pIsolate));
     std::unique_ptr<CFXJSE_Value> newPropertyValue(new CFXJSE_Value(pIsolate));
     FXJSE_Value_GetObjectPropByIdx(pValue, 1, propertyValue.get());
     FXJSE_Value_GetObjectPropByIdx(pValue, 2, jsObjectValue.get());
     if (FXJSE_Value_IsNull(propertyValue.get())) {
       GetObjectDefaultValue(jsObjectValue.get(), newPropertyValue.get());
     } else {
@@ skipping 15 matching lines @@
     iValue = FXSYS_atoi(szValue.c_str());
   } else {
     iValue = FXJSE_Value_ToInteger(pValue);
   }
   return iValue;
 }
 
 // static
 FX_FLOAT CXFA_FM2JSContext::ValueToFloat(CFXJSE_Value* pThis,
                                          CFXJSE_Value* arg) {
-  CXFA_FM2JSContext* pContext =
-      static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
-  v8::Isolate* pIsolate = pContext->GetScriptRuntime();
+  v8::Isolate* pIsolate = ToJSContext(pThis, nullptr)->GetScriptRuntime();
   FX_FLOAT fRet = 0.0f;
   if (FXJSE_Value_IsArray(arg)) {
     std::unique_ptr<CFXJSE_Value> propertyValue(new CFXJSE_Value(pIsolate));
     std::unique_ptr<CFXJSE_Value> jsObjectValue(new CFXJSE_Value(pIsolate));
     std::unique_ptr<CFXJSE_Value> newPropertyValue(new CFXJSE_Value(pIsolate));
     FXJSE_Value_GetObjectPropByIdx(arg, 1, propertyValue.get());
     FXJSE_Value_GetObjectPropByIdx(arg, 2, jsObjectValue.get());
     if (FXJSE_Value_IsNull(propertyValue.get())) {
       GetObjectDefaultValue(jsObjectValue.get(), newPropertyValue.get());
     } else {
@@ skipping 15 matching lines @@
     fRet = 0;
   } else {
     fRet = FXJSE_Value_ToFloat(arg);
   }
   return fRet;
 }
 
 // static
 FX_DOUBLE CXFA_FM2JSContext::ValueToDouble(CFXJSE_Value* pThis,
                                            CFXJSE_Value* arg) {
-  CXFA_FM2JSContext* pContext =
-      static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
-  v8::Isolate* pIsolate = pContext->GetScriptRuntime();
+  v8::Isolate* pIsolate = ToJSContext(pThis, nullptr)->GetScriptRuntime();
   FX_DOUBLE dRet = 0;
   if (FXJSE_Value_IsArray(arg)) {
     std::unique_ptr<CFXJSE_Value> propertyValue(new CFXJSE_Value(pIsolate));
     std::unique_ptr<CFXJSE_Value> jsObjectValue(new CFXJSE_Value(pIsolate));
     std::unique_ptr<CFXJSE_Value> newPropertyValue(new CFXJSE_Value(pIsolate));
     FXJSE_Value_GetObjectPropByIdx(arg, 1, propertyValue.get());
     FXJSE_Value_GetObjectPropByIdx(arg, 2, jsObjectValue.get());
     if (FXJSE_Value_IsNull(propertyValue.get())) {
       GetObjectDefaultValue(jsObjectValue.get(), newPropertyValue.get());
     } else {
@@ skipping 18 matching lines @@
   }
   return dRet;
 }
 
 // static.
 double CXFA_FM2JSContext::ExtractDouble(CFXJSE_Value* pThis,
                                         CFXJSE_Value* src,
                                         bool* ret) {
   ASSERT(ret);
 
-  CXFA_FM2JSContext* pContext =
-      static_cast<CXFA_FM2JSContext*>(FXJSE_Value_ToObject(pThis, nullptr));
-  v8::Isolate* pIsolate = pContext->GetScriptRuntime();
-
+  v8::Isolate* pIsolate = ToJSContext(pThis, nullptr)->GetScriptRuntime();
   *ret = true;
 
   if (FXJSE_Value_IsArray(src)) {
     std::unique_ptr<CFXJSE_Value> lengthValue(new CFXJSE_Value(pIsolate));
     FXJSE_Value_GetObjectProp(src, "length", lengthValue.get());
     int32_t iLength = FXJSE_Value_ToInteger(lengthValue.get());
     if (iLength <= 2) {
       *ret = false;
       return 0.0;
     }
@@ skipping 76 matching lines @@
   CFX_WideString wsFormat;
   pAppProvider->LoadString(iStringID, wsFormat);
   CFX_WideString wsMessage;
   va_list arg_ptr;
   va_start(arg_ptr, iStringID);
   wsMessage.FormatV(wsFormat.c_str(), arg_ptr);
   va_end(arg_ptr);
   FXJSE_ThrowMessage(
       "", FX_UTF8Encode(wsMessage.c_str(), wsMessage.GetLength()).AsStringC());
 }