#43809: Introduce struct for requirement targets
Open Date: 2022-02-08 01:24
Last Update: 2022-02-08 12:48
URL for this Ticket:
https://osdn.net//projects/freeciv/ticket/43809
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Last Changes/Comment on this Ticket:
2022-02-08 12:48 Updated by: cazfi
Comment:
Freeciv codebase is ancient, and many conventions have never been updated. Compound literals came in C99, I think, and there were compilers that didn't support them for a long time after that. CodingStyle seems not to say anything about them. Quick googling indicates that Visual Studio (which doesn't even aim for C99 compatibility) did not support them at least in 2016.
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Ticket Status:
Reporter: alienvalkyrie
Owner: alienvalkyrie
Type: Patches
Status: Open [Owner assigned]
Priority: 5 - Medium
MileStone: 3.1.0
Component: General
Severity: 5 - Medium
Resolution: None
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Ticket details:
Currently, calls to is_req_active() (and accordingly, to are_reqs_active() and is_enabler_active()) are highly inscrutable, given the number of arguments (many of which are often NULL). More problematically, it's impossible to add new kinds of requirement targets without changing every call site (usually by adding another NULL at some spot in the call).
Solution: Add a new struct requirement_targets which contains all of them and make aforementioned functions take a pointer to it. Individual call sites only need to set their relevant fields (by field name ~> better readability), so new fields can be added to the struct with less hassle.
Possible performance considerations:
Additional layer of indirection via pointer to requirement_targets struct
Individual requirement targets don't need to be copied anymore when e.g. are_reqs_active() calls is_req_active()
Both of these are probably relatively minor.
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