用类处理线路阻抗数据。

Signed-off-by: facat@lab.com <facat@lab.com>

testHasttable/element/line.h

@@ -0,0 +1,16 @@
+#ifndef LINE_H
+#define LINE_H
+#include <QPair>
+#include "branch.h"
+#include "./../aclinesegment.h"
+class Line:public Branch
+{
+public:
+    Line(const QPair<QString, QString> &fromTo, ACLineSegment* ac);
+protected:
+    virtual void extract();
+private:
+    ACLineSegment *ac;
+};
+
+#endif // LINE_H