Break xfa_parser_imp apart

xfa/fxfa/parser/cxfa_document_parser.cpp

+// Copyright 2016 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/parser/cxfa_document_parser.h"
+
+#include "xfa/fxfa/include/fxfa.h"
+#include "xfa/fxfa/parser/xfa_document.h"
+
+CXFA_DocumentParser::CXFA_DocumentParser(CXFA_FFNotify* pNotify)
+    : m_nodeParser(nullptr, TRUE), m_pNotify(pNotify) {}
+
+CXFA_DocumentParser::~CXFA_DocumentParser() {
+  CloseParser();
+}
+
+int32_t CXFA_DocumentParser::StartParse(IFX_FileRead* pStream,
+                                        XFA_XDPPACKET ePacketID) {
+  CloseParser();
+  int32_t nRetStatus = m_nodeParser.StartParse(pStream, ePacketID);
+  if (nRetStatus == XFA_PARSESTATUS_Ready) {
+    m_pDocument.reset(new CXFA_Document(this));
+    m_nodeParser.SetFactory(m_pDocument.get());
+  }
+  return nRetStatus;
+}
+
+int32_t CXFA_DocumentParser::DoParse(IFX_Pause* pPause) {
+  int32_t nRetStatus = m_nodeParser.DoParse(pPause);
+  if (nRetStatus >= XFA_PARSESTATUS_Done) {
+    ASSERT(m_pDocument);
+    m_pDocument->SetRoot(m_nodeParser.GetRootNode());
+  }
+  return nRetStatus;
+}
+
+CFDE_XMLDoc* CXFA_DocumentParser::GetXMLDoc() const {
+  return m_nodeParser.GetXMLDoc();
+}
+
+CXFA_FFNotify* CXFA_DocumentParser::GetNotify() const {
+  return m_pNotify;
+}
+
+CXFA_Document* CXFA_DocumentParser::GetDocument() const {
+  return m_pDocument.get();
+}
+
+void CXFA_DocumentParser::CloseParser() {
+  m_pDocument.reset();
+  m_nodeParser.CloseParser();
+}