Closes #29

core/decode_database.h

@@ -14,6 +14,7 @@
 
 #include "attributes.h"
 #include "definition_key.h"
+#include "multiplex_graph.h"
 #include "multiplexing.h"
 #include "value_descriptions.h"
 #include <cstdint>
@@ -42,7 +43,7 @@ enum class ValueType {
  * @brief Runtime-ready signal definition.
  */
 struct DecodeSignal {
-    Multiplexing multiplexing;                 /**< Selector role and branch value. */
+    Multiplexing multiplexing;                 /**< Selector role, parent, and raw branch ranges. */
     std::string name;                          /**< Signal name. */
     std::uint32_t startBit = 0U;               /**< DBC start bit. */
     std::uint32_t length = 0U;                 /**< Signal length in bits. */
@@ -118,7 +119,11 @@ public:
     std::shared_ptr<const DecodeSignal> FindSignal(const SignalKey &key) const;
 
 private:
+    friend class DbcDecoder;
+    const dbc_detail::MultiplexGraph &GetMultiplexGraph(const FrameKey &key) const;
+
     struct Storage {
+        std::vector<dbc_detail::MultiplexGraph> multiplexGraphs;
         std::vector<DecodeFrame> frames;
         std::unordered_map<FrameKey, std::size_t, FrameKeyHasher> frameIndexByKey;