Table 7 Extract of the walkthrough report on selected coding/design rules
From: Development and validation of a safe communication protocol compliant to railway standards
Rule | Comment |
|---|---|
A module/component shall have a single well-defined task or function to fulfill; | They all are straightforward. |
Connections between modules/components shall be limited and strictly defined | Ok. |
Collections of subprograms shall be built providing several levels of modules/components; | Done. |
subprograms shall have a single entry and a single exit only; | Done. |
Modules/components shall communicate with other modules/components via their interfaces. Where global or common variables are used, they shall be well structured, access shall be controlled and their use shall be justified in each instance; | Most of them share structured variables, and all the interfaces are used accordingly. |
All module/component interfaces shall be fully documented | They are well described and documented |