Move xfa_basic_imp to cxfa_widetextread.

xfa/fxfa/parser/xfa_basic_imp.h

-// 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
-
-#ifndef XFA_FXFA_PARSER_XFA_BASIC_IMP_H_
-#define XFA_FXFA_PARSER_XFA_BASIC_IMP_H_
-
-#include "xfa/fgas/crt/fgas_stream.h"
-#include "xfa/fxfa/include/fxfa_basic.h"
-
-struct XFA_NOTSUREATTRIBUTE {
-  XFA_Element eElement;
-  XFA_ATTRIBUTE eAttribute;
-  XFA_ATTRIBUTETYPE eType;
-  void* pValue;
-};
-const XFA_NOTSUREATTRIBUTE* XFA_GetNotsureAttribute(
-    XFA_Element eElement,
-    XFA_ATTRIBUTE eAttribute,
-    XFA_ATTRIBUTETYPE eType = XFA_ATTRIBUTETYPE_NOTSURE);
-
-class CXFA_WideTextRead : public IFX_Stream {
- public:
-  CXFA_WideTextRead(const CFX_WideString& wsBuffer);
-
-  // IFX_Stream
-  void Release() override;
-  IFX_Stream* Retain() override;
-  uint32_t GetAccessModes() const override;
-  int32_t GetLength() const override;
-  int32_t Seek(FX_STREAMSEEK eSeek, int32_t iOffset) override;
-  int32_t GetPosition() override;
-  FX_BOOL IsEOF() const override;
-  int32_t ReadData(uint8_t* pBuffer, int32_t iBufferSize) override;
-  int32_t ReadString(FX_WCHAR* pStr,
-                     int32_t iMaxLength,
-                     FX_BOOL& bEOS) override;
-  int32_t WriteData(const uint8_t* pBuffer, int32_t iBufferSize) override;
-  int32_t WriteString(const FX_WCHAR* pStr, int32_t iLength) override;
-  void Flush() override {}
-  FX_BOOL SetLength(int32_t iLength) override;
-  int32_t GetBOM(uint8_t bom[4]) const override;
-  uint16_t GetCodePage() const override;
-  uint16_t SetCodePage(uint16_t wCodePage) override;
-  IFX_Stream* CreateSharedStream(uint32_t dwAccess,
-                                 int32_t iOffset,
-                                 int32_t iLength) override;
-
-  virtual void Lock();
-  virtual void Unlock();
-
-  CFX_WideString GetSrcText() const;
-
- protected:
-  CFX_WideString m_wsBuffer;
-  int32_t m_iPosition;
-  int32_t m_iRefCount;
-};
-
-#endif  // XFA_FXFA_PARSER_XFA_BASIC_IMP_H_