Deal with ca and CA transparency operators in pdf. add comments to generated classes.

experimental/PdfViewer/SkPdfReferenceDictionary_autogen.h

 #ifndef __DEFINED__SkPdfReferenceDictionary
 #define __DEFINED__SkPdfReferenceDictionary
 
 #include "SkPdfEnums_autogen.h"
 #include "SkPdfArray_autogen.h"
 #include "SkPdfDictionary_autogen.h"
 
+// Entries in a reference dictionary
 class SkPdfReferenceDictionary : public SkPdfDictionary {
 public:
   virtual SkPdfObjectType getType() const { return kReferenceDictionary_SkPdfObjectType;}
   virtual SkPdfObjectType getTypeEnd() const { return (SkPdfObjectType)(kReferenceDictionary_SkPdfObjectType + 1);}
 public:
   virtual SkPdfReferenceDictionary* asReferenceDictionary() {return this;}
   virtual const SkPdfReferenceDictionary* asReferenceDictionary() const {return this;}
 
 private:
   virtual SkPdfALinkAnnotationDictionary* asALinkAnnotationDictionary() {return NULL;}
@@ skipping 496 matching lines @@
 
 public:
 private:
 public:
   SkPdfReferenceDictionary(const PdfMemDocument* podofoDoc = NULL, const PdfObject* podofoObj = NULL) : SkPdfDictionary(podofoDoc, podofoObj) {}
 
   virtual bool valid() const {return true;}
 
   SkPdfReferenceDictionary& operator=(const SkPdfReferenceDictionary& from) {this->fPodofoDoc = from.fPodofoDoc; this->fPodofoObj = from.fPodofoObj; return *this;}
 
+/** (Required) The file containing the target document.
+**/
+  bool has_F() const {
+    return (ObjectFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "F", "", NULL));
+  }
+
   SkPdfFileSpec F() const {
     SkPdfFileSpec ret;
     if (FileSpecFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "F", "", &ret)) return ret;
     // TODO(edisonn): warn about missing required field, assert for known good pdfs
     return SkPdfFileSpec();
   }
 
+/** (Required) A page index or page label (see Section 8.3.1, "Page Labels")
+ *  identifying the page of the target document containing the content to be
+ *  imported. Note that the reference is a weak one and can be inadvertently in-
+ *  validated if the referenced page is changed or replaced in the target document
+ *  after the reference is created.
+**/
+  bool has_Page() const {
+    return (ObjectFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "Page", "", NULL));
+  }
+
   bool isPageAInteger() const {
     SkPdfObject* ret = NULL;
     if (!ObjectFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "Page", "", &ret)) return false;
     return ret->podofo()->GetDataType() == ePdfDataType_Number;
   }
 
   long getPageAsInteger() const {
     long ret = 0;
     if (LongFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "Page", "", &ret)) return ret;
     // TODO(edisonn): warn about missing required field, assert for known good pdfs
     return 0;
   }
 
   bool isPageAString() const {
     SkPdfObject* ret = NULL;
     if (!ObjectFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "Page", "", &ret)) return false;
     return ret->podofo()->GetDataType() == ePdfDataType_String || ret->podofo()->GetDataType() == ePdfDataType_HexString;
   }
 
   std::string getPageAsString() const {
     std::string ret = "";
     if (StringFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "Page", "", &ret)) return ret;
     // TODO(edisonn): warn about missing required field, assert for known good pdfs
     return "";
   }
 
+/** (Optional) An array of two strings constituting a file identifier (see Section 9.3,
+ *  "File Identifiers") for the file containing the target document. The use of this
+ *  entry improves a viewer application's chances of finding the intended file and
+ *  allows it to warn the user if the file has changed since the reference was created.
+**/
+  bool has_ID() const {
+    return (ObjectFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "ID", "", NULL));
+  }
+
   SkPdfArray ID() const {
     SkPdfArray ret;
     if (ArrayFromDictionary(fPodofoDoc, fPodofoObj->GetDictionary(), "ID", "", &ret)) return ret;
     // TODO(edisonn): warn about missing required field, assert for known good pdfs
     return SkPdfArray();
   }
 
 };
 
 #endif  // __DEFINED__SkPdfReferenceDictionary