codec: Added minor add functionality in common edge case

1 files changed, 30 insertions, 0 deletions

diff --git a/modules/codec/c++/data.h b/modules/codec/c++/data.h
index 365405f..2dffdbe 100644
--- a/modules/codec/c++/data.h
+++ b/modules/codec/c++/data.h
@@ -1,6 +1,7 @@
 #pragma once
 
 #include <forstio/common.h>
+#include <forstio/error.h>
 #include <forstio/templates.h>
 
 #include <cassert>
@@ -205,6 +206,35 @@ class data<schema::Array<T,Dim>, encode::Native> {
 			value_.resize(get_full_size());
 		}
 
+		template<size_t i = 0>
+		error_or<void> add(saw::data<T,encode::Native> data){
+			/** @todo
+			 * Generally the last dimension can always accept a element so to say.
+			 * Changing the others would require moving data due to the stride changing.
+			 * Since the last dimension doesn't affect the stride, we don't need reordering there.
+			 * But I want a quick solution for one dimension so here we are.
+			 *
+			 * I can always ignore strides and use a stacked std::vector
+			 * std::vector<std::vector<...>> and so on.
+			 * But for now I'm keeping the strides. Smaller chunks of memory aren't to bad either
+			 * though.
+			 * I'll probably change it to the smaller chunks
+			 */
+			static_assert(Dim == 1, "Currently can't deal with higher dims");
+			static_assert(i < Dim, "Can't add to dimension. Index i larger than dimension size");
+
+			try {
+				value_.emplace_back(std::move(data));
+			}catch(const std::exception& e){
+				(void) e;
+				return make_error<err::out_of_memory>();
+			}
+
+			++dims_.at(i);
+
+			return void_t{};
+		}
+
 		template<std::integral... Dims>
 		data(Dims... size_):
 			data{{static_cast<std::size_t>(size_)...}}