Closes #14

core/dbc_decode_builder.cpp

@@ -10,11 +10,13 @@
  */
 
 #include "dbc_decode_builder.h"
+#include <utility>
 
 DecodeDatabase DbcDecodeBuilder::Build(const DbcDatabase &source) const {
-    DecodeDatabase result;
+    std::vector<DecodeFrame> frames;
+    frames.reserve(source.frames.size());
 
-    for (const FrameInfo &sourceFrame : source.frames) {
+    for (const FrameInfo &sourceFrame: source.frames) {
         DecodeFrame targetFrame;
 
         targetFrame.name = sourceFrame.name;
@@ -26,7 +28,8 @@ DecodeDatabase DbcDecodeBuilder::Build(const DbcDatabase &source) const {
         targetFrame.transmitter = sourceFrame.transmitter;
         targetFrame.comment = sourceFrame.comment;
 
-        for (const SignalInfo &sourceSignal : sourceFrame.signals) {
+        targetFrame.signals.reserve(sourceFrame.signals.size());
+        for (const SignalInfo &sourceSignal: sourceFrame.signals) {
             DecodeSignal targetSignal;
 
             targetSignal.multiplexing = sourceSignal.multiplexing;
@@ -44,13 +47,11 @@ DecodeDatabase DbcDecodeBuilder::Build(const DbcDatabase &source) const {
             targetSignal.comment = sourceSignal.comment;
             targetSignal.valueDescriptions = sourceSignal.valueDescriptions;
 
-            targetFrame.signals.push_back(targetSignal);
+            targetFrame.signals.push_back(std::move(targetSignal));
         }
 
-        result.frames.push_back(targetFrame);
-        result.frameIndexByKey[FrameKey(targetFrame.canId, targetFrame.isExtended)] =
-                result.frames.size() - 1U;
+        frames.push_back(std::move(targetFrame));
     }
 
-    return result;
+    return DecodeDatabase(std::move(frames));
 }