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//
// A labeled switch in zig allows the usage of continue and break
// just like loops, these allow you to create very concise
// Finite State Automata to represent state transitions
//
// foo: switch (state) {
// 1 => continue :foo 2,
// 2 => continue :foo 3,
// 3 => return,
// 4 => {},
// ...
// }
//
const std = @import("std");
const PullRequestState = enum {
Draft,
InReview,
Approved,
Rejected,
Merged,
};
pub fn main() void {
// Something is wrong, it seems your Pull Request can never be merged
// try to fix it!
pr: switch (@as(PullRequestState, PullRequestState.Draft)) {
PullRequestState.Draft => continue :pr PullRequestState.InReview,
PullRequestState.InReview => continue :pr PullRequestState.Rejected,
PullRequestState.Approved => continue :pr PullRequestState.Merged,
PullRequestState.Rejected => std.debug.print("The pull request has been rejected", .{}),
PullRequestState.Merged => std.debug.print("The pull request has been merged", .{}),
}
}
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