In QPDFParser constructor add add parameter parse_pdf

Prepare for treating indirect references differently depending on whether
we are parsing a PDF file (in which case reference to objects not in the
xref table are null even if they are in the object cache) or whether parse
from user code (in which case an indirect reference can refer to a user
created object).

libqpdf/QPDF.cc

@@ -1462,7 +1462,8 @@ QPDF::readTrailer()
 {
     qpdf_offset_t offset = m->file->tell();
     bool empty = false;
-    auto object = QPDFParser(m->file, "trailer", m->tokenizer, nullptr, this).parse(empty, false);
+    auto object =
+        QPDFParser(m->file, "trailer", m->tokenizer, nullptr, this, true).parse(empty, false);
     if (empty) {
         // Nothing in the PDF spec appears to allow empty objects, but they have been encountered in
         // actual PDF files and Adobe Reader appears to ignore them.
@@ -1484,8 +1485,9 @@ QPDF::readObject(std::string const& description, QPDFObjGen og)
 
     StringDecrypter decrypter{this, og};
     StringDecrypter* decrypter_ptr = m->encp->encrypted ? &decrypter : nullptr;
-    auto object = QPDFParser(m->file, m->last_object_description, m->tokenizer, decrypter_ptr, this)
+    auto object =
-                      .parse(empty, false);
+        QPDFParser(m->file, m->last_object_description, m->tokenizer, decrypter_ptr, this, true)
+            .parse(empty, false);
     if (empty) {
         // Nothing in the PDF spec appears to allow empty objects, but they have been encountered in
         // actual PDF files and Adobe Reader appears to ignore them.
@@ -1604,7 +1606,7 @@ QPDF::readObjectInStream(std::shared_ptr<InputSource>& input, int obj)
     m->last_object_description += " 0";
 
     bool empty = false;
-    auto object = QPDFParser(input, m->last_object_description, m->tokenizer, nullptr, this)
+    auto object = QPDFParser(input, m->last_object_description, m->tokenizer, nullptr, this, true)
                       .parse(empty, false);
     if (empty) {
         // Nothing in the PDF spec appears to allow empty objects, but they have been encountered in

libqpdf/QPDFObjectHandle.cc

@@ -2146,7 +2146,8 @@ QPDFObjectHandle::parseContentStream_data(
         tokenizer.readToken(input, "content", true);
         qpdf_offset_t offset = input->getLastOffset();
         input->seek(offset, SEEK_SET);
-        auto obj = QPDFParser(input, "content", tokenizer, nullptr, context).parse(empty, true);
+        auto obj =
+            QPDFParser(input, "content", tokenizer, nullptr, context, false).parse(empty, true);
         if (!obj.isInitialized()) {
             // EOF
             break;
@@ -2205,7 +2206,8 @@ QPDFObjectHandle::parse(
     StringDecrypter* decrypter,
     QPDF* context)
 {
-    return QPDFParser(input, object_description, tokenizer, decrypter, context).parse(empty, false);
+    return QPDFParser(input, object_description, tokenizer, decrypter, context, false)
+        .parse(empty, false);
 }
 
 #ifndef QPDF_FUTURE

libqpdf/QPDFOutlineDocumentHelper.cc

@@ -71,7 +71,7 @@ QPDFOutlineDocumentHelper::resolveNamedDest(QPDFObjectHandle name)
             m->dest_dict = qpdf.getRoot().getKey("/Dests");
         }
         QTC::TC("qpdf", "QPDFOutlineDocumentHelper name named dest");
-        result=  m->dest_dict.getKeyIfDict(name.getName());
+        result = m->dest_dict.getKeyIfDict(name.getName());
     } else if (name.isString()) {
         if (!m->names_dest) {
             auto dests = qpdf.getRoot().getKey("/Names").getKeyIfDict("/Dests");

libqpdf/QPDF_json.cc

@@ -272,10 +272,10 @@ class QPDF::JSONReactor: public JSON::Reactor
     struct StackFrame
     {
         StackFrame(state_e state) :
-            state(state){};
+            state(state) {};
         StackFrame(state_e state, QPDFObjectHandle&& object) :
             state(state),
-            object(object){};
+            object(object) {};
         state_e state;
         QPDFObjectHandle object;
     };

libqpdf/qpdf/QPDFParser.hh

@@ -16,7 +16,8 @@ class QPDFParser
         std::string const& object_description,
         QPDFTokenizer& tokenizer,
         QPDFObjectHandle::StringDecrypter* decrypter,
-        QPDF* context) :
+        QPDF* context,
+        bool parse_pdf) :
         input(input),
         object_description(object_description),
         tokenizer(tokenizer),

libqpdf/qpdf/qpdf-c_impl.hh

@@ -16,7 +16,7 @@ struct _qpdf_data
     _qpdf_data() = default;
 
     _qpdf_data(std::unique_ptr<QPDF>&& qpdf) :
-        qpdf(std::move(qpdf)){};
+        qpdf(std::move(qpdf)) {};
 
     ~_qpdf_data() = default;