From 52d39102d951a4c4c20378d37be468edf00981eb Mon Sep 17 00:00:00 2001
From: FritzFlorian <flo.fritz@t-online.de>
Date: Tue, 9 Jul 2019 16:43:55 +0200
Subject: [PATCH] Restructure to allow a clean interface for end users.

We need some tricks in template programming to have a clean user facing API while internally using our classes with more capabilities.
---
 lib/pls/include/pls/dataflow/internal/inputs.h  | 29 +++++++++++++++++++++++++++++
 lib/pls/include/pls/dataflow/internal/outputs.h | 29 +++++++++++++++++++++++++++++
 2 files changed, 58 insertions(+)
 create mode 100644 lib/pls/include/pls/dataflow/internal/inputs.h
 create mode 100644 lib/pls/include/pls/dataflow/internal/outputs.h

diff --git a/lib/pls/include/pls/dataflow/internal/inputs.h b/lib/pls/include/pls/dataflow/internal/inputs.h
new file mode 100644
index 0000000..feece2e
--- /dev/null
+++ b/lib/pls/include/pls/dataflow/internal/inputs.h
@@ -0,0 +1,29 @@
+
+#ifndef PLS_DATAFLOW_INTERNAL_INPUTS_H_
+#define PLS_DATAFLOW_INTERNAL_INPUTS_H_
+
+#include <tuple>
+
+#include "input.h"
+
+namespace pls {
+namespace dataflow {
+namespace internal {
+
+template<int P, typename ...I>
+class inputs {
+  using values_type = std::tuple<input<I>...>;
+  values_type values_;
+
+ public:
+  template<int N>
+  typename std::tuple_element<N, values_type>::type &get() {
+    return std::get<N>(values_);
+  }
+};
+
+}
+}
+}
+
+#endif //PLS_DATAFLOW_INTERNAL_INPUTS_H_
diff --git a/lib/pls/include/pls/dataflow/internal/outputs.h b/lib/pls/include/pls/dataflow/internal/outputs.h
new file mode 100644
index 0000000..1004aba
--- /dev/null
+++ b/lib/pls/include/pls/dataflow/internal/outputs.h
@@ -0,0 +1,29 @@
+
+#ifndef PLS_DATAFLOW_INTERNAL_OUTPUTS_H_
+#define PLS_DATAFLOW_INTERNAL_OUTPUTS_H_
+
+#include <tuple>
+
+#include "output.h"
+
+namespace pls {
+namespace dataflow {
+namespace internal {
+
+template<int P, typename ...O>
+class outputs {
+  using values_type = std::tuple<output<O>...>;
+  values_type values_;
+
+ public:
+  template<int N>
+  typename std::tuple_element<N, values_type>::type &get() {
+    return std::get<N>(values_);
+  }
+};
+
+}
+}
+}
+
+#endif //PLS_DATAFLOW_INTERNAL_OUTPUTS_H_
--
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