Annotated Flatbuffer Binary (#7174)

* Annotated Flatbuffer Binary

* Various fixes

* Handles old schema

* handle multiple missing fields

* minor edits

* bazel fix, spelling fix, ascii fix

include/flatbuffers/flatc.h

@@ -103,6 +103,11 @@ class FlatCompiler {
   void Error(const std::string &err, bool usage = true,
              bool show_exe_name = true) const;
 
+  void AnnotateBinaries(const uint8_t *binary_schema,
+                        uint64_t binary_schema_size,
+                        const std::string & schema_filename,
+                        const std::vector<std::string> &binary_files);
+
   InitParams params_;
 };
 

include/flatbuffers/reflection.h

@@ -279,6 +279,12 @@ T *GetAnyFieldAddressOf(const Struct &st, const reflection::Field &field) {
   return reinterpret_cast<T *>(st.GetAddressOf(field.offset()));
 }
 
+// Loop over all the fields of the provided `object` and call `func` on each one
+// in increasing order by their field->id(). If `reverse` is true, `func` is
+// called in descending order
+void ForAllFields(const reflection::Object *object, bool reverse,
+                  std::function<void(const reflection::Field *)> func);
+
 // ------------------------- SETTERS -------------------------
 
 // Set any scalar field, if you know its exact type.