diff options
Diffstat (limited to 'lib/rites/rite_of/lectionary_of.ml')
| -rw-r--r-- | lib/rites/rite_of/lectionary_of.ml | 36 |
1 files changed, 34 insertions, 2 deletions
diff --git a/lib/rites/rite_of/lectionary_of.ml b/lib/rites/rite_of/lectionary_of.ml index 1664fad..eb3e4e0 100644 --- a/lib/rites/rite_of/lectionary_of.ml +++ b/lib/rites/rite_of/lectionary_of.ml @@ -60,6 +60,24 @@ let lookup_any lectionary ~year_start base date = | Some cs -> Some cs | None -> Lectionary.find lectionary (with_suffix (weekday_cycle_letter (weekday_cycle ~year_start date)))) +(* See lectionary_of.mli's own doc comment for the full citation (OLM n. + 69.3) and argument. Kept as ordinary [Printf.sprintf] string + construction, not a lookup table, so tools/bootstrap_lectionary_of.ml's + own reachability sweep (which calls this function directly, not a + hand-copied re-implementation) and this module's own runtime lookup can + never drift apart -- the single failure mode a hand-duplicated version + in each place would invite. *) +let date_keyed_slug date = + if Date.weekday date = Date.Sun then None + else + let m = Date.month date and dd = Date.day date in + if m = 12 && dd >= 17 && dd <= 24 then Some (Slug.of_string_exn (Printf.sprintf "of-advent-dec-%d" dd)) + else if m = 12 && dd >= 29 && dd <= 31 then + Some (Slug.of_string_exn (Printf.sprintf "of-christmas-dec-%d" dd)) + else if m = 1 && ((dd >= 2 && dd <= 5) || dd = 7) then + Some (Slug.of_string_exn (Printf.sprintf "of-christmas-jan-%d" dd)) + else None + let readings ~lectionary ~year_start ~(observed : Vocab_of.rank Celebration.t) ~(temporal : (Vocab_of.season, Vocab_of.rank) Temporal.t) ~date ~temporal_at:_ = match observed.Celebration.citations with @@ -99,9 +117,23 @@ let readings ~lectionary ~year_start ~(observed : Vocab_of.rank Celebration.t) Mass_formulary.source was never built to carry. *) (Some { Mass_formulary.said = Some observed.Celebration.slug; via = Mass_formulary.Proper }, cs) | None -> ( - match lookup_any lectionary ~year_start temporal.Temporal.office.Celebration.slug date with + (* OLM n. 69.3's own date-fixed windows (see date_keyed_slug's + own doc comment): tried BEFORE the ordinary weekday-keyed + slug lookup, not instead of it, so every other temporal day + is unaffected -- this branch only ever hits inside the two + named civil-date windows, and [date_keyed_slug] itself + already refuses a Sunday, where a NAMED Sunday office (never + one of these weekday-keyed ferial slugs) is what temporal. + office actually names. *) + match (match date_keyed_slug date with Some s -> Lectionary.find lectionary s | None -> None) with | Some cs -> ( Some { Mass_formulary.said = Some temporal.Temporal.office.Celebration.slug; via = Mass_formulary.Own_slug }, cs ) - | None -> (None, []))) + | None -> ( + match lookup_any lectionary ~year_start temporal.Temporal.office.Celebration.slug date with + | Some cs -> + ( Some { Mass_formulary.said = Some temporal.Temporal.office.Celebration.slug; + via = Mass_formulary.Own_slug }, + cs ) + | None -> (None, [])))) |