vec <-> repeated pointer converters in utils

Author: abe-winter

src/viam/sdk/common/utils.cpp

@@ -184,5 +184,21 @@ bool from_dm_from_extra(const ProtoStruct& extra) {
     return false;
 }
 
+template <typename Src, typename Dst>
+void vecToRepeatedPtr(const std::vector<Src>& vec, google::protobuf::RepeatedPtrField<Dst>& dest) {
+    dest->Reserve(vec.size());
+    for (auto& x : vec) {
+        *dest.Add() = x;
+    }
+}
+
+template <typename Src, typename Dst>
+void repeatedPtrToVec(const google::protobuf::RepeatedPtrField<Src>& src, std::vector<Dst>& vec) {
+    vec.reserve(src.size());
+    for (auto& x : src) {
+        vec.push_back(x);
+    }
+}
+
 }  // namespace sdk
 }  // namespace viam

src/viam/sdk/common/utils.hpp

@@ -99,5 +99,15 @@ void set_logger_severity_from_args(int argc, char** argv);
 /// @param extra The extra ProtoStruct.
 bool from_dm_from_extra(const ProtoStruct& extra);
 
+/// @brief Copies elements from a protobuf repeated pointer array into a std::vector. Src type
+/// must be implicitly convertible to Dst (probably via operator on Src).
+template <typename Src, typename Dst>
+void vecToRepeatedPtr(const std::vector<Src>& vec, google::protobuf::RepeatedPtrField<Dst>& dest);
+
+/// @brief Copies elements from a std::vector into a protobuf repeated pointer array. Src type
+/// must be implicitly convertible to Dst (probably via constructor on Dst).
+template <typename Src, typename Dst>
+void repeatedPtrToVec(const google::protobuf::RepeatedPtrField<Src>& src, std::vector<Dst>& vec);
+
 }  // namespace sdk
 }  // namespace viam