Module:User:Benwing2/be-noun

local export = {}

--[=[

Authorship: Ben Wing

]=]

--[=[

TERMINOLOGY:

-- "slot" = A particular combination of case/number. Example slot names for nouns are "gen_" (genitive singular) and "voc_p" (vocative plural). Each slot is filled with zero or more forms.

-- "form" = The declined Belarusian form representing the value of a given slot.

-- "lemma" = The dictionary form of a given Belarusian term. Generally the nominative masculine singular, but may occasionally be another form if the nominative masculine singular is missing. ]=]

local lang = require("Module:languages").getByCode("be") local m_table = require("Module:table") local m_links = require("Module:links") local m_string_utilities = require("Module:string utilities") local iut = require("Module:inflection utilities") local m_para = require("Module:parameters") local com = require("Module:User:Benwing2/be-common") local m_be_translit = require("Module:be-translit")

local current_title = mw.title.getCurrentTitle local NAMESPACE = current_title.nsText local PAGENAME = current_title.text

local u = mw.ustring.char local rsplit = mw.text.split local rfind = mw.ustring.find local rmatch = mw.ustring.match local rgmatch = mw.ustring.gmatch local rsubn = mw.ustring.gsub local ulen = mw.ustring.len local usub = mw.ustring.sub local uupper = mw.ustring.upper local ulower = mw.ustring.lower

local AC = u(0x0301) -- acute = ́ local CFLEX = u(0x0302) -- circumflex = ̂ local DOTABOVE = u(0x0307) -- dot above = ̇ local accents = AC .. DOTABOVE local accents_c = "[" .. accents .. "]"

-- version of rsubn that discards all but the first return value local function rsub(term, foo, bar) local retval = rsubn(term, foo, bar) return retval end

-- version of rsubn that returns a 2nd argument boolean indicating whether -- a substitution was made. local function rsubb(term, foo, bar) local retval, nsubs = rsubn(term, foo, bar) return retval, nsubs > 0 end

local output_noun_slots = { nom_s = "nom|s", gen_s = "gen|s", dat_s = "dat|s", acc_s = "acc|s", ins_s = "ins|s", loc_s = "loc|s", voc_s = "voc|s", nom_p = "nom|p", gen_p = "gen|p", dat_p = "dat|p", acc_p = "acc|p", ins_p = "ins|p", loc_p = "loc|p", voc_p = "voc|p", count = "count|form", }

local output_noun_slots_with_linked = m_table.shallowcopy(output_noun_slots) output_noun_slots_with_linked["nom_s_linked"] = "nom|s" output_noun_slots_with_linked["nom_p_linked"] = "nom|p"

local input_params_to_slots_both = { [1] = "nom_s", [2] = "nom_p", [3] = "gen_s", [4] = "gen_p", [5] = "dat_s", [6] = "dat_p", [7] = "acc_s", [8] = "acc_p", [9] = "ins_s", [10] = "ins_p", [11] = "loc_s", [12] = "loc_p", [13] = "voc_s", [14] = "voc_p", ["count"] = "count", }

local input_params_to_slots_sg = { [1] = "nom_s", [2] = "gen_s", [3] = "dat_s", [4] = "acc_s", [5] = "ins_s", [6] = "loc_s", [7] = "voc_s", }

local input_params_to_slots_pl = { [1] = "nom_p", [2] = "gen_p", [3] = "dat_p", [4] = "acc_p", [5] = "ins_p", [6] = "loc_p", [7] = "voc_p", ["count"] = "count", }

local cases = { nom = true, gen = true, dat = true, acc = true, ins = true, loc = true, voc = true, count = true, }

local accented_cases = { ["nóm"] = "nom", ["gén"] = "gen", ["dát"] = "dat", ["ácc"] = "acc", ["íns"] = "ins", ["lóc"] = "loc", ["cóunt"] = "count", }

-- Stress patterns indicate where the stress goes for forms of each possible slot. -- "-" means stem stress, "+" means ending stress. The field "stress" indicates -- where to put the stem stress if the lemma doesn't include it. It applies primarily -- to types d and f and variants of them. For example, lemma галава́ (type d) has -- plural гало́вы (last-syllable stress), but lemma старана́ (type f) has plural -- сто́раны (first-syllable stress). local stress_patterns = {}

stress_patterns["a"] = { nom_s="-", gen_s="-", dat_s="-", acc_s="-", ins_s="-", loc_s="-", count = "-", nom_p="-", gen_p="-", dat_p="-",           ins_p="-", loc_p="-", stress = nil, }

stress_patterns["b"] = { nom_s="+", gen_s="+", dat_s="+", acc_s="+", ins_s="+", loc_s="+", count = "+", nom_p="+", gen_p="+", dat_p="+",           ins_p="+", loc_p="+", stress = "last", }

stress_patterns["c"] = { nom_s="-", gen_s="-", dat_s="-", acc_s="-", ins_s="-", loc_s="-", count = "-", nom_p="+", gen_p="+", dat_p="+",           ins_p="+", loc_p="+", stress = nil, }

stress_patterns["d"] = { nom_s="+", gen_s="+", dat_s="+", acc_s="+", ins_s="+", loc_s="+", count = "+", nom_p="-", gen_p="-", dat_p="-",           ins_p="-", loc_p="-", stress = "last", }

stress_patterns["e"] = { nom_s="-", gen_s="-", dat_s="-", acc_s="-", ins_s="-", loc_s="-", count = "-", nom_p="-", gen_p="+", dat_p="+",           ins_p="+", loc_p="+", stress = nil, }

stress_patterns["f"] = { nom_s="+", gen_s="+", dat_s="+", acc_s="+", ins_s="+", loc_s="+", count = "+", nom_p="-", gen_p="+", dat_p="+",           ins_p="+", loc_p="+", stress = "first", }

local count_footnote_msg = "[used with the numbers 2, 3, 4 and higher numbers after 20 ending in 2, 3, and 4]"

-- Maybe modify the stem and/or ending in certain special cases: -- * Final -е in dative/locative singular triggers second palatalization. local function apply_special_cases(base, slot, stem, ending) if (slot == "dat_s" or slot == "loc_s") and rfind(ending, "^е" .. accents_c .. "?$") then stem = com.apply_second_palatalization(stem) if rfind(stem, "ц$") then -- Original к -> ц but this requires a hard ending. This ending is -э́ if stressed -- (e.g. дачка́ "daughter" dat/loc sg. дачцэ́, рака́ "river" dat/loc sg. рацэ́, same			-- for рука́ "hand", шчака́ "cheek" etc.), but otherwise -ы (іго́лка "needle"			-- dat/loc sg. іго́лцы, аве́чка "sheep" dat.loc sg. аве́чцы, etc.). For whatever -- reason this doesn't apply to originally hard endings, e.g. ігра́ "game" -- dat/log sg. ігры́. ending = ending == "е́" and "э́" or "ы" end end return stem, ending end

local function skip_slot(number, slot) return number == "sg" and (slot == "count" or rfind(slot, "_p$")) or		number == "pl" and (slot == "count" or rfind(slot, "_s$")) end

local function add(base, slot, stress, endings, footnotes, explicit_stem) if not endings then return end if skip_slot(base.number, slot) then return end footnotes = iut.combine_footnotes(iut.combine_footnotes(base.footnotes, stress.footnotes), footnotes) if type(endings) == "string" then endings = {endings} end local slot_is_plural = rfind(slot, "_p$") local stress_for_slot local stress_pattern_set = stress_patterns[stress.stress] if not stress_pattern_set then error("Internal error: Unrecognized stress pattern " .. stress.stress) end local stress_for_slot if slot == "acc_p" then -- This only applies when an override of acc_p is given. if base.animacy == "inan" then stress_for_slot = stress_pattern_set.nom_p else stress_for_slot = stress_pattern_set.gen_p end else stress_for_slot = stress_pattern_set[slot] if not stress_for_slot then error("Internal error: Don't know stress for pattern " .. stress.stress .. ", slot " .. slot) end end for _, ending in ipairs(endings) do		local stem if explicit_stem then stem = explicit_stem else if rfind(ending, "^ь?" .. com.vowel_c) then stem = slot_is_plural and stress.pl_vowel_stem or stress.vowel_stem else stem = slot_is_plural and stress.pl_nonvowel_stem or stress.nonvowel_stem end end -- If end stress is called for, add it to the ending if possible, -- otherwise if we're in the genitive plural, go ahead and stress the -- last syllable of the stem. This is required, for example, with -- старана́ "side" of type f, where the plural stem is сто́рон-. The nom pl -- calls for stem stress and you correctly get сто́раны after destressing. -- However, the gen pl calls for ending stress but is a null ending, -- so we need this extra logic to get the correct form старо́н rather than -- #сто́ран. Only do this for the genitive plural; otherwise we'll mess up -- e.g. the nom sg of ву́гал "angle, corner" and ву́зел "knot", which are of -- type b.		local function accent_ending_or_stem_end if rfind(ending, com.vowel_c) then ending = com.maybe_accent_initial_syllable(ending) elseif slot == "gen_p" then stem = com.remove_accents(stem) stem = com.maybe_accent_final_syllable(stem) end end if rfind(ending, DOTABOVE) then -- DOTABOVE indicates stem stress in all cases ending = rsub(ending, DOTABOVE, "") elseif slot == "gen_p" and stress.genpl_reversed then if stress_for_slot ~= "+" then accent_ending_or_stem_end end elseif stress_for_slot == "+" then accent_ending_or_stem_end end if com.is_nonsyllabic(stem) then -- If stem is nonsyllabic, the ending must receive stress. ending = com.maybe_accent_initial_syllable(ending) end stem, ending = apply_special_cases(base, slot, stem, ending) ending = iut.generate_form(ending, footnotes) iut.add_forms(base.forms, slot, stem, ending,			com.combine_stem_ending_into_external_form) end end

local function process_slot_overrides(base, do_slot) for slot, overrides in pairs(base.overrides) do		if skip_slot(base.number, slot) then error("Override specified for invalid slot '" .. slot .. "' due to '" .. base.number .. "' number restriction") end if do_slot(slot) then base.forms[slot] = nil for _, override in ipairs(overrides) do				for _, value in ipairs(override.values) do					local form = value.form local combined_notes = iut.combine_footnotes(base.footnotes, value.footnotes) if override.full then if form ~= "" then iut.insert_form(base.forms, slot, {form = form, footnotes = combined_notes}) end else if override.stemstressed then -- Signal not to add a stress to the ending even if the stress pattern -- calls for it. form = form .. DOTABOVE end for _, stress in ipairs(base.stresses) do							add(base, slot, stress, form, combined_notes) end end end end end end end

local function add_decl(base, stress,	nom_s, gen_s, dat_s, acc_s, ins_s, loc_s, count,	nom_p, gen_p, dat_p, ins_p, loc_p, footnotes ) add(base, "nom_s", stress, nom_s, footnotes) add(base, "gen_s", stress, gen_s, footnotes) add(base, "dat_s", stress, dat_s, footnotes) add(base, "acc_s", stress, acc_s, footnotes) add(base, "ins_s", stress, ins_s, footnotes) add(base, "loc_s", stress, loc_s, footnotes) local count_footnotes = {count_footnote_msg} add(base, "count", stress, count, iut.combine_footnotes(count_footnotes, footnotes)) add(base, "nom_p", stress, nom_p, footnotes) add(base, "gen_p", stress, gen_p, footnotes) add(base, "dat_p", stress, dat_p, footnotes) add(base, "ins_p", stress, ins_p, footnotes) add(base, "loc_p", stress, loc_p, footnotes) end

local function handle_derived_slots_and_overrides(base) local function is_non_derived_slot(slot) return slot ~= "acc_s" and slot ~= "acc_p" end

local function is_derived_slot(slot) return not is_non_derived_slot(slot) end

-- Handle overrides for the non-derived slots. Do this before generating the derived -- slots so overrides of the source slots (e.g. nom_p) propagate to the derived slots. process_slot_overrides(base, is_non_derived_slot)

-- Generate the remaining slots that are derived from other slots. if not base.forms["acc_s"] and (rfind(base.decl, "%-m$") or base.gender == "M" and base.decl == "adj") then iut.insert_forms(base.forms, "acc_s", base.forms[base.animacy == "inan" and "nom_s" or "gen_s"]) end if base.animacy == "inan" then iut.insert_forms(base.forms, "acc_p", base.forms["nom_p"]) else assert(base.animacy == "pr" or base.animacy == "anml") iut.insert_forms(base.forms, "acc_p", base.forms["gen_p"]) end

-- Handle overrides for derived slots, to allow them to be overridden. process_slot_overrides(base, is_derived_slot)

-- Compute linked versions of potential lemma slots, for use in. -- We substitute the original lemma (before removing links) for forms that -- are the same as the lemma, if the original lemma has links. for _, slot in ipairs({"nom_s", "nom_p"}) do iut.insert_forms(base.forms, slot .. "_linked", iut.map_forms(base.forms[slot], function(form) if form == base.orig_lemma_no_links and rfind(base.orig_lemma, "%[%[") then return base.orig_lemma else return form end end)) end end

local decls = {} local declprops = {}

local function default_genitive_u(base) return base.number == "sg" and not rfind(base.lemma, "^%u") end

local function add_soft_sign(nonvowel_stem) return com.ends_in_vowel(nonvowel_stem) and "й" or	rfind(nonvowel_stem, "й$") and "" or "ь" end

local function genitive_pl_ending(stress, default_ending, is_soft) local ending = stress.genpl_ending or default_ending if ending == "null" then return is_soft and add_soft_sign(stress.pl_nonvowel_stem) or "" elseif ending == "w" then -- circumflex above means it irregularly turns into -яў when unstressed return is_soft and "ё̂ў" or "оў" elseif ending == "j" then -- If is_soft, use -ей after ц, not -эй. return (com.ends_always_hard_or_ts(stress.pl_vowel_stem) and not is_soft) and "эй" or "ей" else error("Internal error: Unrecognized ending spec: " .. (ending or "nil")) end end

-- Add standard plural endings. `normal_type` should be "soft" or "hard" indicating -- the default type of endings, if not overridden by the codes 'plsoft' or 'plhard'. -- `gen_p_type` indicates the default type of genitive plural endings ("null", "w" or "j"). -- `nom_p`, if given, overrides the normal nominative plural ending when the ending type -- isn't changed by `plsoft` or `plhard`. local function add_plural(base, stress, normal_type, gen_p_type, nom_p) local ending_type = base.plsoft and "soft" or base.plhard and "hard" or normal_type local normal_nom_p = (ending_type == "soft" or com.ends_in_velar(stress.pl_vowel_stem)) and "і" or "ы" nom_p = ending_type == normal_type and nom_p or normal_nom_p local gen_p = genitive_pl_ending(stress, gen_p_type, ending_type == "soft") if ending_type == "soft" then add_decl(base, stress, nil, nil, nil, nil, nil, nil, nil,			nom_p, gen_p, "ям", "ямі", "ях") else add_decl(base, stress, nil, nil, nil, nil, nil, nil, nil,			nom_p, gen_p, "ам", "амі", "ах") end end

decls["hard-m"] = function(base, stress) local velar_sg = com.ends_in_velar(stress.vowel_stem) local always_hard_or_ts = com.ends_always_hard_or_ts(stress.vowel_stem) local gen_s = default_genitive_u(base) and "у" or "а" -- may be overridden local loc_s = velar_sg and "у" or		always_hard_or_ts and base.animacy == "pr" and "у" or		always_hard_or_ts and "ы" or		"е" local count = velar_sg and "і" or "ы" add_decl(base, stress, "", gen_s, "у", nil, "ом", loc_s, count) local special_nom_p = base.remove_in and com.ends_always_hard_or_ts(stress.pl_vowel_stem) and "ы" or		base.remove_in and "е" or		nil local gen_p_type = base.remove_in and "null" or "w" add_plural(base, stress, "hard", gen_p_type, special_nom_p) end

local function get_stem_type(stress, short) if com.ends_in_velar(stress.vowel_stem) then return short and "velar" or "velar-stem" else return "hard" end end

declprops["hard-m"] = { desc = function(base, stress) return get_stem_type(stress, "short") .. " masc-form" end, cat = function(base, stress) return get_stem_type(stress) .. " masculine-form" end }

decls["soft-m"] = function(base, stress) local nom_s = add_soft_sign(stress.nonvowel_stem) local gen_s = default_genitive_u(base) and "ю" or "я" -- may be overridden local loc_s = base.animacy == "pr" and "ю" or "і" add_decl(base, stress, nom_s, gen_s, "ю", nil, "ём", loc_s, "і") add_plural(base, stress, "soft", "w") end

declprops["soft-m"] = { desc = "soft masc-form", cat = "soft masculine-form", }

decls["a-m"] = function(base, stress) local velar_sg = com.ends_in_velar(stress.vowel_stem) local always_hard_or_ts = com.ends_always_hard_or_ts(stress.vowel_stem) local gen_s = velar_sg and "і" or "ы" local loc_s = velar_sg and "у" or		always_hard_or_ts and base.animacy == "pr" and "у" or -- This is a guess based on hard-m. I don't have any examples of animal or -- inanimate masculines in -а. always_hard_or_ts and "ы" or		"е" add_decl(base, stress, "о", gen_s, "у", "у", "ом", loc_s, gen_s) add_plural(base, stress, "hard", "w") end

local function a_m_desc(base, stress) return get_stem_type(stress, "short") .. " masc in -а" end

local function a_m_cat(base, stress) local stem_type = get_stem_type(stress) local cats = {} table.insert(cats, stem_type .. " masculine nouns in -а") table.insert(cats, stem_type .. " masculine ~ nouns in -а") return cats end

declprops["a-m"] = { desc = a_m_desc, cat = a_m_cat, }

local function maybe_tag_ins_s_with_variant(base, ins_s_endings) if base.multiword then assert(type(ins_s_endings) == "table") assert(#ins_s_endings == 2) local ending1, ending2 = unpack(ins_s_endings) return {ending1 .. com.VAR1, ending2 .. com.VAR2} else return ins_s_endings end end

decls["hard-f"] = function(base, stress) local always_hard_or_ts = com.ends_always_hard_or_ts(stress.vowel_stem) local gen_s = com.ends_in_velar(stress.vowel_stem) and "і" or "ы" -- This -е will trigger second palatalization (see apply_special_cases), -- and if after final -к will be transformed into stressed -э́ or unstressed -ы. local dat_loc_s = always_hard_or_ts and "ы" or "е" local ins_s = maybe_tag_ins_s_with_variant(base, {"ой", "ою"}) add_decl(base, stress, "а", gen_s, dat_loc_s, "у", ins_s, dat_loc_s, gen_s) add_plural(base, stress, "hard", base.plsoft and "j" or "null") end

declprops["hard-f"] = { desc = function(base, stress) return get_stem_type(stress, "short") .. " fem-form" end, cat = function(base, stress) return get_stem_type(stress) .. " feminine-form" end }

decls["soft-f"] = function(base, stress) local ins_s = maybe_tag_ins_s_with_variant(base, {"ё̂й", "ё̂ю"}) add_decl(base, stress, "я", "і", "і", "ю", ins_s, "і", "і") add_plural(base, stress, "soft", "null") end

declprops["soft-f"] = { desc = "soft fem-form", cat = "soft feminine-form", }

decls["hard-third-f"] = function(base, stress) add_decl(base, stress, "", "ы", "ы", "", nil, "ы", "ы") add_plural(base, stress, "hard", "j") local ins_s_stem = stress.nonvowel_stem local ins_s local pre_stem, final_cons = rmatch(ins_s_stem, "^(.*)([чшжц])$") if pre_stem then if com.ends_in_vowel(pre_stem) then -- vowel + doublable cons; double the cons: -- мыш "mouse", ins sg. мы́шшу, etc. ins_s_stem = ins_s_stem .. final_cons end ins_s = "у" -- if non-vowel + doublable cons, don't change stem -- FIXME, need example else -- шыр "wide-open space" ins sg. шы́р'ю ins_s_stem = ins_s_stem .. "'"		ins_s = "ю" end -- See comment below in soft-third-f about DOTABOVE. add(base, "ins_s", stress, ins_s .. DOTABOVE, nil, ins_s_stem) end

declprops["hard-third-f"] = { desc = "hard 3rd-decl fem-form", cat = "hard third-declension feminine-form", }

decls["soft-third-f"] = function(base, stress) local nom_s = rfind(stress.nonvowel_stem, "ў$") and "" or		add_soft_sign(stress.pl_nonvowel_stem) add_decl(base, stress, nom_s, "і", "і", nom_s, nil, "і", "і") add_plural(base, stress, "soft", "j") local ins_s_stem = stress.nonvowel_stem local pre_stem, final_cons = rmatch(ins_s_stem, "^(.*)(дз)$") if pre_stem and com.ends_in_vowel(pre_stem) then -- медзь "copper", ins sg. ме́ддзю; мо́ладзь "youth", ins sg. мо́ладдзю, etc. ins_s_stem = pre_stem .. "ддз" else pre_stem, final_cons = rmatch(ins_s_stem, "^(.*)([^ў])$") if pre_stem and com.ends_in_vowel(pre_stem) then -- vowel + doublable cons; double the cons: -- гусь "goose", ins sg. гу́ссю; дало́нь "palm", ins sg. дало́нню etc. ins_s_stem = ins_s_stem .. final_cons end end -- If non-vowel + cons, don't change stem; жоўць "bile", ins sg. жо́ўцю, etc.	-- Use DOTABOVE because ins_s needs to be stem-stressed even if remaining -- forms are unstressed (e.g. любо́ў, gen sg. любві́, ins sg. любо́ўю). add(base, "ins_s", stress, "ю" .. DOTABOVE, nil, ins_s_stem) end

declprops["soft-third-f"] = { desc = "soft 3rd-decl fem-form", cat = "soft third-declension feminine-form", }

decls["hard-n"] = function(base, stress) local velar_sg = com.ends_in_velar(stress.vowel_stem) local always_hard_or_ts = com.ends_always_hard_or_ts(stress.vowel_stem) local acc_s = base.animacy ~= "inan" and "а" or "о" local loc_s = velar_sg and "у" or		always_hard_or_ts and base.animacy == "pr" and "у" or		always_hard_or_ts and "ы" or		"е" local count = velar_sg and "і" or "ы" add_decl(base, stress, "о", "а", "у", acc_s, "ом", loc_s, count) -- plsoft: кале́на "knee" pl. кале́ні; дно "bottom" alt pl. до́нья add_plural(base, stress, "hard", "w") end

declprops["hard-n"] = { desc = function(base, stress) if com.ends_in_velar(stress.vowel_stem) then return "velar neut-form" else return "hard neut-form" end end, cat = function(base, stress) if com.ends_in_velar(stress.vowel_stem) then return "velar-stem neuter-form" else return "hard neuter-form" end end }

local function soft_or_fourth_n(base, stress, nom_s) add_decl(base, stress, nom_s, "я", "ю", nom_s, "ём", "і", "і") -- plhard: зе́рне alt pl. зерня́ты add_plural(base, stress, "soft", "w") end

decls["soft-n"] = function(base, stress) soft_or_fourth_n(base, stress, "ё") end

declprops["soft-n"] = { desc = "soft neut-form", cat = "soft neuter-form", }

decls["fourth-n"] = function(base, stress) soft_or_fourth_n(base, stress, "я") end

declprops["fourth-n"] = { desc = "4th-decl neut-form", cat = "fourth-declension neuter-form", }

decls["n-n"] = function(base, stress) local gen_p = genitive_pl_ending(stress, "null") -- FIXME, do we need to support plsoft, and if so, how? add_decl(base, stress, "я", "ені", "ені", "я", "енем", "ені", "ені",		"ёны", "ён" .. gen_p, "ёнам", "ёнамі", "ёнах") end

declprops["n-n"] = { desc = "n-stem neut-form", cat = "n-stem neuter-form", }

decls["t-n"] = function(base, stress) -- FIXME, t-stem in -ця́ definitely occurs (e.g. дзіця́); can t-stem in ца́ -- occur? local always_hard = com.ends_always_hard(stress.vowel_stem) local v = always_hard and "а" or "я" local ins_s = always_hard and "ом" or "ём" local gen_p = genitive_pl_ending(stress, "null") -- FIXME, do we need to support plsoft, and if so, how? add_decl(base, stress, v, v .. "ці", v .. "ці", v, ins_s, v .. "ці", v .. "ці",		v .. "ты", v .. "т" .. gen_p, v .. "там", v .. "тамі", v .. "тах") end

declprops["t-n"] = { desc = "t-stem neut-form", cat = "t-stem neuter-form", }

decls["adj"] = function(base, stress) local props = {} if base.valt then table.insert(props, base.valt) end if base.surname then table.insert(props, "surname") end local propspec = table.concat(props, ".") if propspec ~= "" then propspec = "<" .. propspec .. ">"	end -- If multiword, add variant codes to feminine adjectival instrumental -- singular forms so we only get adjective -й endings with noun -й endings -- and adjective -ю endings with noun -ю endings. local adj_alternant_spec = require("Module:User:Benwing2/be-adjective").do_generate_forms(		{base.lemma .. propspec}, nil, nil, nil, base.multiword	) local function copy(from_slot, to_slot) -- Copy forms from the origin adjective slot to the destination noun slot. -- The adjective code doesn't currently call mark_stressed_vowels_in_unstressed_syllables -- or its inverse, so we need to call the inverse function to remove extra -- added marks (e.g. accent marks over ё and DOTBELOW marks under vowels		-- not to be destressed). base.forms[to_slot] = iut.map_forms(adj_alternant_spec.forms[from_slot],			com.undo_mark_stressed_vowels_in_unstressed_syllables) end if base.number ~= "pl" then if base.gender == "M" then copy("nom_m", "nom_s") copy("gen_m", "gen_s") copy("dat_m", "dat_s") copy("ins_m", "ins_s") copy("loc_m", "loc_s") copy("gen_m", "count") elseif base.gender == "F" then copy("nom_f", "nom_s") copy("gen_f", "gen_s") copy("dat_f", "dat_s") copy("acc_f", "acc_s") copy("ins_f", "ins_s") copy("loc_f", "loc_s") copy("gen_f", "count") elseif base.gender == "N" then copy("nom_n", "nom_s") copy("gen_m", "gen_s") copy("dat_m", "dat_s") copy("acc_n", "acc_s") copy("ins_m", "ins_s") copy("loc_m", "loc_s") copy("gen_n", "count") else error("Internal error: Unrecognized gender: " .. base.gender) end end if base.number ~= "sg" then copy("nom_p", "nom_p") copy("gen_p", "gen_p") copy("dat_p", "dat_p") copy("ins_p", "ins_p") copy("loc_p", "loc_p") end end

declprops["adj"] = { desc = function(base, stress) if base.number == "pl" then return "adj" elseif base.gender == "M" then return "adj masc" elseif base.gender == "F" then return "adj fem" elseif base.gender == "N" then return "adj neut" else error("Internal error: Unrecognized gender: " .. base.gender) end end, cat = function(base, stress) local gender if base.number == "pl" then gender = "plural-only" elseif base.gender == "M" then gender = "masculine" elseif base.gender == "F" then gender = "feminine" elseif base.gender == "N" then gender = "neuter" else error("Internal error: Unrecognized gender: " .. base.gender) end local stemtype if rfind(base.lemma, "ци́?й$") then stemtype = "c-stem" elseif rfind(base.lemma, "и́?й$") then stemtype = "hard" elseif rfind(base.lemma, "і́?й$") then stemtype = "soft" elseif rfind(base.lemma, "ї́?й$") then stemtype = "j-stem" elseif base.surname then stemtype = "surname" else stemtype = "possessive" end

return {"adjectival nouns", stemtype .. " " .. gender .. " adjectival ~ nouns"} end, }

local function fetch_footnotes(separated_group) local footnotes for j = 2, #separated_group - 1, 2 do		if separated_group[j + 1] ~= "" then error("Extraneous text after bracketed footnotes: '" .. table.concat(separated_group) .. "'") end if not footnotes then footnotes = {} end table.insert(footnotes, separated_group[j]) end return footnotes end

--[=[ Parse a single override spec (e.g. 'loci:ú' or 'datpl:чо́ботам:чобо́тям[rare]') and return two values: the slot the override applies to, and an object describing the override spec. The input is actually a list where the footnotes have been separated out; for example, given the spec 'inspl:чо́ботамі:чобо́тямі[rare]:чобітьми́[archaic]', the input will be a list {"inspl:чо́ботамі:чобо́тямі", "[rare]", ":чобітьми́", "[archaic]", ""}. The object returned for 'datpl:чо́ботам:чобо́тям[rare]' looks like this:

{ full = true, values = { {     form = "чо́ботам" },   {      form = "чобо́тям", footnotes = {"[rare]"} } } }

The object returned for 'lócji:jú' looks like this:

{ stemstressed = true, values = { {     form = "ї", },   {      form = "ю́", } } }

Note that all forms (full or partial) are reverse-transliterated, and full forms are normalized by adding an accent to monosyllabic forms. ]=] local function parse_override(segments) local retval = {values = {}} local part = segments[1] local offset = 4 local case = usub(part, 1, 3) if cases[case] then -- ok	elseif accented_cases[case] then case = accented_cases[case] retval.stemstressed = true elseif rfind(part, "^count") then case = "count" offset = 6 elseif rfind(part, "^cóunt") then case = "count" offset = 6 retval.stemstressed = true else error("Internal error: unrecognized case in override: '" .. table.concat(segments) .. "'") end local rest = usub(part, offset) local slot if case == "count" then slot = "count" elseif rfind(rest, "^pl") then rest = rsub(rest, "^pl", "") slot = case .. "_p" else slot = case .. "_s" end if rfind(rest, "^:") then retval.full = true rest = rsub(rest, "^:", "") end segments[1] = rest local colon_separated_groups = iut.split_alternating_runs(segments, ":") for i, colon_separated_group in ipairs(colon_separated_groups) do		local value = {} local form = colon_separated_group[1] if form == "" then error("Use - to indicate an empty ending for slot '" .. slot .. "': '" .. table.concat(segments .. "'"))		elseif form == "-" then value.form = "" else value.form = m_be_translit.reverse_tr(form) if retval.full then value.form = com.add_monosyllabic_accent(value.form) if com.needs_accents(value.form) then error("Override '" .. value.form .. "' for slot '" .. slot .. "' missing an accent") end end end value.footnotes = fetch_footnotes(colon_separated_group) table.insert(retval.values, value) end return slot, retval end

--[=[ Parse an indicator spec (text consisting of angle brackets and zero or more dot-separated indicators within them). Return value is an object of the form

{ overrides = { SLOT = {OVERRIDE, OVERRIDE, ...}, -- as returned by parse_override ... },  forms = {}, -- forms for a single spec alternant; see `forms` below footnotes = {"FOOTNOTE", "FOOTNOTE", ...}, -- may be missing stresses = { -- may be missing {	 stress = "STRESS", -- "a", "b", etc.	  reducible = TRUE_OR_FALSE, genpl_reversed = TRUE_OR_FALSE, footnotes = {"FOOTNOTE", "FOOTNOTE", ...}, -- may be missing -- The following fields are filled in by determine_stress_and_stems vowel_stem = "STEM", nonvowel_stem = "STEM", pl_vowel_stem = "STEM", pl_nonvowel_stem = "STEM", },	... },  explicit_gender = "GENDER", -- "M", "F", "N", "MF"; may be missing number = "NUMBER", -- "sg", "pl"; may be missing animacy = "ANIMACY", -- "inan", "pr", "anml"; may be missing valt = {"VOWEL_ALTERNATION", ...} -- "ae", "ao", "yo", "oy", etc.; may be missing neutertype = "NEUTERTYPE", -- "t", "n"; may be missing plsoft = true, -- may be missing plhard = true, -- may be missing remove_in = true, -- may be missing thirddecl = true, -- may be missing surname = true, -- may be missing adj = true, -- may be missing stem = "STEM", -- may be missing plstem = "PLSTEM", -- may be missing

-- The following additional fields are added by other functions: orig_lemma = "ORIGINAL-LEMMA", -- as given by the user orig_lemma_no_links = "ORIGINAL-LEMMA-NO-LINKS", -- links removed, monosyllabic stress added lemma = "LEMMA", -- `orig_lemma_no_links`, converted to singular form if plural forms = { SLOT = { {		form = "FORM", footnotes = {"FOOTNOTE", "FOOTNOTE", ...} -- may be missing },	 ...	},	...  },  decl = "DECL", -- declension, e.g. "hard-m" vowel_stem = "VOWEL-STEM", -- derived from vowel-ending lemmas nonvowel_stem = "NONVOWEL-STEM", -- derived from non-vowel-ending lemmas } ]=] local function parse_indicator_spec(angle_bracket_spec) local inside = rmatch(angle_bracket_spec, "^<(.*)>$") assert(inside) local base = {overrides = {}, forms = {}} if inside ~= "" then local segments = iut.parse_balanced_segment_run(inside, "[", "]") local dot_separated_groups = iut.split_alternating_runs(segments, "%.") for i, dot_separated_group in ipairs(dot_separated_groups) do			local part = dot_separated_group[1] local case_prefix = usub(part, 1, 3) if cases[case_prefix] or accented_cases[case_prefix] then local slot, override = parse_override(dot_separated_group) if base.overrides[slot] then table.insert(base.overrides[slot], override) else base.overrides[slot] = {override} end elseif part == "" then if #dot_separated_group == 1 then error("Blank indicator: '" .. inside .. "'") end base.footnotes = fetch_footnotes(dot_separated_group) elseif rfind(part, "^[a-f][*#ўй%-]*$") or rfind(part, "^[a-f][*#ўй%-]*,") or				rfind(part, "^[*#ўй%-]*$") or rfind(part, "^[*#ўй%-]*,") then if base.stresses then error("Can't specify stress pattern indicator twice: '" .. inside .. "'") end local comma_separated_groups = iut.split_alternating_runs(dot_separated_group, ",") local patterns = {} for i, comma_separated_group in ipairs(comma_separated_groups) do					local pattern = comma_separated_group[1] local pat, reducible = rsubb(pattern, "%*", "") local genpl_reversed, genpl_ending_null, genpl_ending_w, genpl_ending_j pat, genpl_reversed = rsubb(pat, "#", "") pat, genpl_ending_null = rsubb(pat, "%(%-%)", "") pat, genpl_ending_w = rsubb(pat, "%(ў%)", "") pat, genpl_ending_j = rsubb(pat, "%(й%)", "") if genpl_ending_null and genpl_ending_w then error("Can't specify both (-) and (ў) in the same stress pattern indicator: '" .. inside .. "'") end if genpl_ending_null and genpl_ending_j then error("Can't specify both (-) and (й) in the same stress pattern indicator: '" .. inside .. "'") end if genpl_ending_w and genpl_ending_j then error("Can't specify both (ў) and (й) in the same stress pattern indicator: '" .. inside .. "'") end local genpl_ending = genpl_ending_null and "null" or						genpl_ending_w and "w" or						genpl_ending_j and "j" or						nil if pat == "" then pat = nil end if pat and not stress_patterns[pat] then error("Unrecognized stress pattern '" .. pat .. "': '" .. inside .. "'") end table.insert(patterns, {						stress = pat, reducible = reducible, genpl_reversed = genpl_reversed,						genpl_ending = genpl_ending, footnotes = fetch_footnotes(comma_separated_group)					}) end base.stresses = patterns elseif #dot_separated_group > 1 then error("Footnotes only allowed with slot overrides, stress patterns or by themselves: '" .. table.concat(dot_separated_group) .. "'") elseif part == "M" or part == "MF" or part == "F" or part == "N" then if base.explicit_gender then error("Can't specify gender twice: '" .. inside .. "'") end base.explicit_gender = part elseif part == "sg" or part == "pl" then if base.number then error("Can't specify number twice: '" .. inside .. "'") end base.number = part elseif part == "inan" or part == "pr" or part == "anml" then if base.animacy then error("Can't specify animacy twice: '" .. inside .. "'") end base.animacy = part elseif rfind(part, "^a[eo][23]?$") or rfind(part, "^avo[23]?$") or rfind(part, "yo[23]?$") or				part == "oy" or part == "voa" then base.valt = base.valt or {} table.insert(base.valt, part) elseif part == "t" or part == "n" then if base.neutertype then error("Can't specify neuter indicator ('t' or 'n') more than once: '" .. inside .. "'") end base.neutertype = part elseif part == "plsoft" then if base.plsoft then error("Can't specify 'plsoft' twice: '" .. inside .. "'") end base.plsoft = true elseif part == "plhard" then if base.plhard then error("Can't specify 'plhard' twice: '" .. inside .. "'") end base.plhard = true elseif part == "in-" then if base.remove_in then error("Can't specify 'in-' twice: '" .. inside .. "'") end base.remove_in = true elseif part == "3rd" then if base.thirddecl then error("Can't specify '3rd' twice: '" .. inside .. "'") end base.thirddecl = true elseif part == "surname" then if base.surname then error("Can't specify 'surname' twice: '" .. inside .. "'") end base.surname = true elseif part == "+" then if base.adj then error("Can't specify '+' twice: '" .. inside .. "'") end base.adj = true elseif rfind(part, "^stem:") then if base.stem then error("Can't specify stem twice: '" .. inside .. "'") end base.stem = rsub(part, "^stem:", "") elseif rfind(part, "^plstem:") then if base.plstem then error("Can't specify plural stem twice: '" .. inside .. "'") end base.plstem = rsub(part, "^plstem:", "") else error("Unrecognized indicator '" .. part .. "': '" .. inside .. "'") end end end return base end

local function add_stress_for_pattern(stress, stem) local where_stress = stress_patterns[stress.stress].stress if where_stress == "last" then return com.maybe_accent_final_syllable(stem) elseif where_stress == "first" then return com.maybe_accent_initial_syllable(stem) elseif not com.is_stressed(stem) then error("Something wrong: Stress pattern " .. stress.stress .. " but stem '" .. stem .. "' doesn't have stress") else return stem end end

local function set_defaults_and_check_bad_indicators(base) -- Set default values. if not base.adj then base.number = base.number or "both" base.animacy = base.animacy or base.surname and "pr" or			base.neutertype == "t" and "anml" or			"inan" end base.gender = base.explicit_gender

-- Set some further defaults and check for certain bad indicator/number/gender combinations. if base.thirddecl then if base.number ~= "pl" then error("'3rd' can only be specified along with 'pl'") end if base.gender and base.gender ~= "F" then error("'3rd' can't specified with non-feminine gender indicator '" .. base.gender .. "'") end base.gender = "F" end if base.neutertype then if base.gender and base.gender ~= "N" then error("Neuter-type indicator '" .. base.neutertype .. "' can't specified with non-neuter gender indicator '" .. base.gender .. "'") end base.gender = "N" end end

local function undo_vowel_alternation(base, stem) -- FIXME! Implement me. return stem end

-- For a plural-only lemma, synthesize a likely singular lemma. It doesn't have to be -- theoretically correct as long as it generates all the correct plural forms (which mostly -- means the nominative and genitive plural as the remainder are either derived or the same -- for all declensions, modulo soft vs. hard). local function synthesize_singular_lemma(base) local stem, ac	while true do -- Check for t-type endings. if base.neutertype == "t" then stem, ac = rmatch(base.lemma, "^(.*[яа])(́)ты$") if stem then base.lemma = stem .. ac				break end error("Unrecognized lemma for 't' indicator: '" .. base.lemma .. "'") end -- Handle lemmas in -ы. stem, ac = rmatch(base.lemma, "^(.*)ы(́?)$") if stem then if not base.gender then error("For plural-only lemma, need to specify the gender: '" .. base.lemma .. "'") end if base.gender == "M" then stem = rsub(stem, "в$", "ў") base.lemma = undo_vowel_alternation(base, stem) elseif base.gender == "F" then if base.thirddecl then if not com.ends_always_hard_or_ts(stem) then error("For 3rd-decl plural-only lemma in -ы, stem must end in an always-hard consonant or ц: '" .. base.lemma .. "'") else base.lemma = stem end base.lemma = undo_vowel_alternation(base, base.lemma) else base.lemma = stem .. "а" .. ac				end elseif base.gender == "MF" then if ac == "" then -- This is because masculine in unstressed -а and feminine in -- unstressed -а have different declensions. error("For plural-only lemma in unstressed -ы, gender MF not allowed: '" .. base.lemma .. "'") else base.lemma = stem .. "а́" end else assert(base.gender == "N") if ac == "" then base.lemma = stem .. "а" else base.lemma = stem .. "о́" end end break end -- Handle lemmas in -і. stem, ac = rmatch(base.lemma, "^(.*)і(́?)$") if stem then if not base.gender then error("For plural-only lemma, need to specify the gender: '" .. base.lemma .. "'") end local velar = com.ends_in_velar(stem) local vowel = com.ends_in_vowel(stem) if base.gender == "M" then if velar then base.lemma = stem elseif vowel then base.lemma = stem .. "й" else base.lemma = stem .. "ь" end base.lemma = undo_vowel_alternation(base, base.lemma) elseif base.gender == "F" then if base.thirddecl then if rfind(stem, "в$") then base.lemma = rsub(stem, "в$", "ў") else base.lemma = stem .. "ь" end base.lemma = undo_vowel_alternation(base, base.lemma) elseif velar then base.lemma = stem .. "а" .. ac				else base.lemma = stem .. "я" .. ac				end elseif base.gender == "MF" then if velar then if ac == "" then -- This is because masculine in unstressed -а and feminine in -- unstressed -а have different declensions. error("For plural-only lemma in velar + unstressed -і, gender MF not allowed: '" .. base.lemma .. "'") end base.lemma = stem .. "а́" else base.lemma = stem .. "я" .. ac				end else assert(base.gender == "N") if ac == "" then base.lemma = stem .. (velar and "а" or "е") else base.lemma = stem .. (velar and "о́" or "ё") end end break end error("Don't recognize ending of lemma '" .. base.lemma .. "'") end

-- Now set the stress pattern if not given. if not base.stresses then base.stresses = end for _, stress in ipairs(base.stresses) do		if not stress.stress then if ac == AC then stress.stress = "b" else stress.stress = "a" end end end end

-- For an adjectival lemma, synthesize the masc singular form. local function synthesize_adj_lemma(base) local stem, vowel, ac	local gender, number while true do		-- Masculine stem, ac = rmatch(base.lemma, "^(.*)[ыі](́?)$") if stem then gender = "M" break end stem, ac = rmatch(base.lemma, "^(.*[аоеё]́?в)$") if stem then gender = "M" break end stem, ac = rmatch(base.lemma, "^(.*[ыі]́?н)$") if stem then gender = "M" break end -- Feminine stem, vowel, ac = rmatch(base.lemma, "^(.*)([ая])(́?)я$") if stem then if com.ends_in_velar(stem) or vowel == "я" then base.lemma = stem .. "і" .. ac			else base.lemma = stem .. "ы" .. ac			end gender = "F" break end -- Neuter stem, vowel, ac = rmatch(base.lemma, "^(.*)([аоя])(́?)е$") if stem then if com.ends_in_velar(stem) or vowel == "я" then base.lemma = stem .. "і" .. ac			else base.lemma = stem .. "ы" .. ac			end gender = "N" break end -- Plural stem, vowel, ac = rmatch(base.lemma, "^(.*)([ыі])(́?)я$") if stem then base.lemma = stem .. vowel .. ac			number = "pl" break end error("Don't recognize ending of adjectival lemma '" .. base.lemma .. "'") end if gender then if base.gender and base.gender ~= gender then error("Explicit gender '" .. base.gender .. "' disagrees with detected gender '" .. gender .. "'") end base.gender = gender end if number then if base.number and base.number ~= number then error("Explicit number '" .. base.number .. "' disagrees with detected number '" .. number .. "'") end base.number = number end

-- Now set the stress pattern if not given. if not base.stresses then base.stresses = end for _, stress in ipairs(base.stresses) do		if not stress.stress then if ac == AC then stress.stress = "b" else stress.stress = "a" end end -- Set the stems. stress.vowel_stem = stem stress.nonvowel_stem = stem stress.pl_vowel_stem = stem stress.pl_nonvowel_stem = stem end base.decl = "adj" end

local function check_indicators_match_lemma(base) -- Check for indicators that don't make sense given the context. if base.remove_in and not rfind(base.lemma, "[іы]́?н$") then error("'in-' can only be specified with a lemma ending in -ін or -ын") end if base.neutertype then if not rfind(base.lemma, "я́?$") and not rfind(base.lemma, com.always_hard_or_ts_c .. "а́?$") then error("Neuter-type indicator '" .. base.neutertype .. "' can only be specified with a lemma ending in -я or always-hard/ц + -а") end if base.neutertype == "n" and not rfind(base.lemma, "мя́?$") then error("Neuter-type indicator 'n' can only be specified with a lemma ending in -мя") end end end

-- Determine the declension based on the lemma and whatever gender has been already given, -- and set the gender to a default if not given. The declension is set in base.decl. -- In the process, we set either base.vowel_stem (if the lemma ends in a vowel) or -- base.nonvowel_stem (if the lemma does not end in a vowel), which is used by -- determine_stress_and_stems. local function determine_declension_and_gender(base) -- Determine declension and set gender local stem, ac	stem = rmatch(base.lemma, "^(.*)ь$") if stem then if not base.gender then if rfind(base.lemma, "асць$") then base.gender = "F" else error("For lemma ending in -ь other than -асць, gender M or F must be given") end end if base.gender == "N" or base.gender == "MF" then error("For lemma ending in -ь, gender " .. base.gender .. " not allowed") elseif base.gender == "M" then base.decl = "soft-m" else base.decl = "soft-third-f" end base.nonvowel_stem = stem return end stem = rmatch(base.lemma, "^(.*)й$") if stem then base.decl = "soft-m" if base.gender and base.gender ~= "M" then error("For lemma ending in -й, gender " .. base.gender .. " not allowed") end base.gender = "M" base.nonvowel_stem = stem base.stem_for_reduce = base.lemma return end stem, ac = rmatch(base.lemma, "^(.*)а(́?)$") if stem then if ac == "" then if not base.gender and rfind(base.lemma, "[сц]тва$") then base.gender = "N" end if base.gender == "M" then -- ба́цька, мужчы́на, прамо́ўца, пту́шка, саба́ка, све́дка, etc.				base.decl = "a-m" elseif base.gender == "N" then base.decl = "hard-n" elseif base.gender == "MF" then error("For lemma ending in unstressed -а, gender MF not allowed") else base.gender = "F" base.decl = "hard-f" end elseif base.gender == "N" then error("For lemma ending in -а́, gender N not allowed") else -- Nouns in -а́ decline like feminines even if masculine (e.g. сатана́). base.gender = base.gender or "F" base.decl = "hard-f" end base.vowel_stem = stem return end stem = rmatch(base.lemma, "^(.*)я́?$") if stem then if base.neutertype == "n" then base.decl = "n-n" elseif base.neutertype == "t" then base.decl = "t-n" elseif base.gender == "N" then base.decl = "fourth-n" elseif not base.gender and rfind(stem, "м$") then base.decl = "fourth-n" base.gender = "N" else base.decl = "soft-f" base.gender = base.gender or "F" end base.vowel_stem = stem return end stem = rmatch(base.lemma, "^(.*)о́$") if stem then base.decl = "hard-n" if base.gender == "F" or base.gender == "MF" then error("For lemma ending in -о́, gender " .. base.gender .. " not allowed") end base.gender = base.gender or "N" base.vowel_stem = stem return end local vowel stem, ac = rmatch(base.lemma, "^(.*)([её])(́?)$") if stem then base.decl = "soft-n" if base.gender and base.gender ~= "N" then error("For lemma ending in -е or -ё, gender " .. base.gender .. " not allowed") end base.gender = "N" if vowel == "е" and ac == AC or vowel == "ё" and ac == "" then error("Neuter lemma in stressed -е́ or unstressed -ё not allowed: '" .. base.lemma .. "'") end base.vowel_stem = stem return end stem = rmatch(base.lemma, "^(.*" .. com.cons_c .. ")$")	if stem then if base.gender == "N" or base.gender == "MF" then error("For lemma ending in a consonant, gender " .. base.gender .. " not allowed") elseif base.gender == "F" then if rfind(stem, "ў$") then base.decl = "soft-third-f" else base.decl = "hard-third-f" end else base.decl = "hard-m" end base.gender = base.gender or "M" base.nonvowel_stem = stem return end error("Unrecognized ending for lemma: '" .. base.lemma .. "'") end

-- Determine the stress pattern(s) if not explicitly given, as well as the stems -- to use for each specified stress pattern: vowel and nonvowel stems, for singular -- and plural. We assume that one of base.vowel_stem or base.nonvowel_stem has been -- set in determine_declension_and_gender, depending on whether the lemma ends in -- a vowel. We construct all the rest given the stress pattern, reducibility, and -- any explicit stems given. We store the determined stems inside of the stress objects -- in `base.stresses`, meaning that if the user gave multiple stress patterns, we -- will compute multiple sets of stems. The reason is that the stems may vary depending -- on the stress pattern and reducibility. The dependency on reducibility should be -- obvious but there is also dependency on the stress pattern in that in stress patterns -- d and f the lemma is given in end-stressed form but some other forms need to -- be stem-stressed. We make the stems stressed on the last syllable for pattern d -- (галава́ pl. гало́вы) but but on the first syllable for pattern f (старана́ pl. сто́раны). local function determine_stress_and_stems(base) if not base.stresses then base.stresses = end if base.stem then base.stem = com.mark_stressed_vowels_in_unstressed_syllables(base.stem) end if base.plstem then base.plstem = com.mark_stressed_vowels_in_unstressed_syllables(base.plstem) end local end_stressed_lemma = rfind(base.lemma, AC .. "$") for _, stress in ipairs(base.stresses) do		local function dereduce(stem) local epenthetic_stress = stress_patterns[stress.stress].gen_p == "+" if stress.genpl_reversed then epenthetic_stress = not epenthetic_stress end local dereduced_stem = com.dereduce(stem, epenthetic_stress) if not dereduced_stem then error("Unable to dereduce stem '" .. stem .. "'") end return dereduced_stem end if not stress.stress then if stress.reducible and rfind(base.lemma, "[еоэаё]́" .. com.cons_c .. "ь?$") then -- reducible with stress on the reducible vowel stress.stress = "b" elseif base.neutertype == "t" then stress.stress = "b" elseif base.neutertype == "n" then stress.stress = "c" elseif end_stressed_lemma then stress.stress = "d" else stress.stress = "a" end end if stress.stress ~= "b" then if base.stem and com.needs_accents(base.stem) then error("Explicit stem needs an accent with stress pattern " .. stress.stress .. ": '" .. base.stem .. "'") end if base.plstem and com.needs_accents(base.plstem) then error("Explicit plural stem needs an accent with stress pattern " .. stress.stress .. ": '" .. base.plstem .. "'") end end local lemma_is_vowel_stem = not not base.vowel_stem if base.vowel_stem then if end_stressed_lemma and stress_patterns[stress.stress].nom_s ~= "+" then error("Stress pattern " .. stress.stress .. " requires a stem-stressed lemma, not end-stressed: '" .. base.lemma .. "'") elseif not end_stressed_lemma and stress_patterns[stress.stress].nom_s == "+" then error("Stress pattern " .. stress.stress .. " requires an end-stressed lemma, not stem-stressed: '" .. base.lemma .. "'") end if base.stem then error("Can't specify 'stem:' with lemma ending in a vowel") end stress.vowel_stem = add_stress_for_pattern(stress, base.vowel_stem) stress.nonvowel_stem = stress.vowel_stem if stress.reducible then stress.nonvowel_stem = dereduce(stress.nonvowel_stem) end stress.nonvowel_stem = rsub(stress.nonvowel_stem, "в$", "ў") else stress.nonvowel_stem = add_stress_for_pattern(stress, base.nonvowel_stem) stress.vowel_stem = stress.reducible and base.stem_for_reduce or base.nonvowel_stem -- Convert -ў to -в before reducing; otherwise reduced stem салаў- from -- салаве́й "nightingale" gets wrongly converted to салав-. stress.vowel_stem = rsub(stress.vowel_stem, "ў$", "в") if stress.reducible then local reduced_stem = com.reduce(stress.vowel_stem) if not reduced_stem then error("Unable to reduce stem '" .. stress.vowel_stem .. "'") end stress.vowel_stem = reduced_stem end if base.stem and base.stem ~= stress.vowel_stem then stress.irregular_stem = true stress.vowel_stem = base.stem end stress.vowel_stem = add_stress_for_pattern(stress, stress.vowel_stem) end if base.remove_in then stress.pl_vowel_stem = com.maybe_accent_final_syllable(rsub(stress.vowel_stem, "[іы]́?н$", "")) stress.pl_nonvowel_stem = stress.pl_vowel_stem else stress.pl_vowel_stem = stress.vowel_stem stress.pl_nonvowel_stem = stress.nonvowel_stem end if base.plstem then local stressed_plstem = add_stress_for_pattern(stress, base.plstem) if stressed_plstem ~= stress.pl_vowel_stem then stress.irregular_plstem = true end stress.pl_vowel_stem = stressed_plstem stress.pl_nonvowel_stem = stressed_plstem if lemma_is_vowel_stem and stress.reducible then stress.pl_nonvowel_stem = dereduce(stress.pl_nonvowel_stem) end end end end

local function detect_indicator_spec(base) set_defaults_and_check_bad_indicators(base) if base.adj then synthesize_adj_lemma(base) else if base.number == "pl" then synthesize_singular_lemma(base) end check_indicators_match_lemma(base) determine_declension_and_gender(base) determine_stress_and_stems(base) end end

local function detect_all_indicator_specs(alternant_multiword_spec) local is_multiword = #alternant_multiword_spec.alternant_or_word_specs > 1 iut.map_word_specs(alternant_multiword_spec, function(base)		detect_indicator_spec(base)		base.multiword = is_multiword	end) end

local propagate_multiword_properties

local function propagate_alternant_properties(alternant_spec, property, mixed_value, nouns_only) local seen_property for _, multiword_spec in ipairs(alternant_spec.alternants) do		propagate_multiword_properties(multiword_spec, property, mixed_value, nouns_only) if seen_property == nil then seen_property = multiword_spec[property] elseif multiword_spec[property] and seen_property ~= multiword_spec[property] then seen_property = mixed_value end end alternant_spec[property] = seen_property end

propagate_multiword_properties = function(multiword_spec, property, mixed_value, nouns_only) local seen_property = nil local last_seen_nounal_pos = 0 local word_specs = multiword_spec.alternant_or_word_specs or multiword_spec.word_specs for i = 1, #word_specs do		local is_nounal if word_specs[i].alternants then propagate_alternant_properties(word_specs[i], property, mixed_value) is_nounal = not not word_specs[i][property] elseif nouns_only then is_nounal = not word_specs[i].adj else is_nounal = not not word_specs[i][property] end if is_nounal then if not word_specs[i][property] then error("Internal error: noun-type word spec without " .. property .. " set") end for j = last_seen_nounal_pos + 1, i - 1 do				word_specs[j][property] = word_specs[j][property] or word_specs[i][property] end last_seen_nounal_pos = i			if seen_property == nil then seen_property = word_specs[i][property] elseif seen_property ~= word_specs[i][property] then seen_property = mixed_value end end end if last_seen_nounal_pos > 0 then for i = last_seen_nounal_pos + 1, #word_specs do			word_specs[i][property] = word_specs[i][property] or word_specs[last_seen_nounal_pos][property] end end multiword_spec[property] = seen_property end

local function propagate_properties_downward(alternant_multiword_spec, property, default_propval) local propval1 = alternant_multiword_spec[property] or default_propval for _, alternant_or_word_spec in ipairs(alternant_multiword_spec.alternant_or_word_specs) do		local propval2 = alternant_or_word_spec[property] or propval1 if alternant_or_word_spec.alternants then for _, multiword_spec in ipairs(alternant_or_word_spec.alternants) do				local propval3 = multiword_spec[property] or propval2 for _, word_spec in ipairs(multiword_spec.word_specs) do					local propval4 = word_spec[property] or propval3 if propval4 == "mixed" then error("Attempt to assign mixed " .. property .. " to word") end word_spec[property] = propval4 end end else if propval2 == "mixed" then error("Attempt to assign mixed " .. property .. " to word") end alternant_or_word_spec[property] = propval2 end end end

--[=[ Propagate `property` (one of "animacy", "gender" or "number") from nouns to adjacent adjectives. We proceed as follows: 1. We assume the properties in question are already set on all nouns. This should happen in set_defaults_and_check_bad_indicators. 2. We first propagate properties upwards and sideways. We recurse downwards from the top. When we encounter a multiword spec, we proceed left to right looking for a noun. When we find a noun, we fetch its property (recursing if the noun is an alternant), and propagate it to any adjectives to its left, up to the next noun to the left. When we have processed the last noun, we also propagate its property value to any adjectives to the right (to handle e.g. пустальга звычайная "common kestrel", where  the adjective польовий should inherit the 'animal' animacy of лунь). Finally, we set the property value for the multiword spec itself by combining all the non-nil properties of the individual elements. If all non-nil properties have the same value, the result is that value, otherwise it is `mixed_value` (which is "mixed" for animacy  and gender, but "both" for number). 3. When we encounter an alternant spec in this process, we recursively process each alternant (which is a multiword spec) using the previous step, and combine any non-nil properties we encounter the same way as for multiword specs. 4. The effect of steps 2 and 3 is to set the property of each alternant and multiword spec based on its children or its neighbors. ]=] local function propagate_properties(alternant_multiword_spec, property, default_propval, mixed_value) propagate_multiword_properties(alternant_multiword_spec, property, mixed_value, "nouns only") propagate_multiword_properties(alternant_multiword_spec, property, mixed_value, false) propagate_properties_downward(alternant_multiword_spec, property, default_propval) end

local function determine_noun_status(alternant_multiword_spec) for i, alternant_or_word_spec in ipairs(alternant_multiword_spec.alternant_or_word_specs) do		if alternant_or_word_spec.alternants then local is_noun = false for _, multiword_spec in ipairs(alternant_or_word_spec.alternants) do				for j, word_spec in ipairs(multiword_spec.word_specs) do					if not word_spec.adj then multiword_spec.first_noun = j						is_noun = true break end end end if is_noun then alternant_multiword_spec.first_noun = i			end elseif not alternant_or_word_spec.adj then alternant_multiword_spec.first_noun = i			return end end end

-- Check that multisyllabic lemmas have stress, and add stress to monosyllabic -- lemmas if needed. local function normalize_all_lemmas(alternant_multiword_spec) iut.map_word_specs(alternant_multiword_spec, function(base)		base.orig_lemma = base.lemma		base.orig_lemma_no_links = com.add_monosyllabic_accent(m_links.remove_links(base.lemma))		base.lemma = base.orig_lemma_no_links		base.lemma = com.mark_stressed_vowels_in_unstressed_syllables(base.lemma)		base.lemma = com.apply_vowel_alternation(base.lemma, base.valt)	end) end

local function decline_noun(base) for _, stress in ipairs(base.stresses) do		if not decls[base.decl] then error("Internal error: Unrecognized declension type '" .. base.decl .. "'") end decls[base.decl](base, stress) end handle_derived_slots_and_overrides(base) end

local function process_manual_overrides(forms, args, number, unknown_stress) local params_to_slots_map = number == "sg" and input_params_to_slots_sg or		number == "pl" and input_params_to_slots_pl or		input_params_to_slots_both for param, slot in pairs(params_to_slots_map) do		if args[param] then forms[slot] = nil if args[param] ~= "-" and args[param] ~= "—" then local footnotes = slot == "count" and {count_footnote_msg} or nil for _, form in ipairs(rsplit(args[param], "%s*,%s*")) do					if com.is_multi_stressed(form) then error("Multi-stressed form '" .. form .. "' in slot '" .. slot .. "' not allowed; use singly-stressed forms separated by commas") end if not unknown_stress and not rfind(form, "^%-") and com.needs_accents(form) then error("Stress required in multisyllabic form '" .. form .. "' in slot '" .. slot .. "'; if stress is truly unknown, use unknown_stress=1") end iut.insert_form(forms, slot, {form=form, footnotes=footnotes}) end end end end end

-- Compute the categories to add the noun to, as well as the annotation to display in the -- declension title bar. We combine the code to do these functions as both categories and -- title bar contain similar information. local function compute_categories_and_annotation(alternant_multiword_spec) local cats = {} local function insert(cattype) m_table.insertIfNot(cats, "Belarusian " .. cattype) end if alternant_multiword_spec.number == "sg" then insert("uncountable nouns") elseif alternant_multiword_spec.number == "pl" then insert("pluralia tantum") end local annotation if alternant_multiword_spec.manual then alternant_multiword_spec.annotation = alternant_multiword_spec.number == "sg" and "sg-only" or			alternant_multiword_spec.number == "pl" and "pl-only" or			"" else local annparts = {} local animacies = {} local decldescs = {} local patterns = {} local vowelalts = {} local irregs = {} local stems = {} local reducible = nil local function do_word_spec(base) if base.animacy == "inan" then m_table.insertIfNot(animacies, "inan") elseif base.animacy == "pr" then m_table.insertIfNot(animacies, "pr") else assert(base.animacy == "anml") m_table.insertIfNot(animacies, "anml") end for _, stress in ipairs(base.stresses) do				local props = declprops[base.decl] local desc = props.desc if type(desc) == "function" then desc = desc(base, stress) end m_table.insertIfNot(decldescs, desc) local cats = props.cat if type(cats) == "function" then cats = cats(base, stress) end if type(cats) == "string" then cats = {cats .. " nouns", cats .. " ~ nouns"} end for _, cat in ipairs(cats) do cat = rsub(cat, "~", "accent-" .. stress.stress) insert(cat) end m_table.insertIfNot(patterns, stress.stress) insert("nouns with accent pattern " .. stress.stress) if base.valt then for _, valt in ipairs(base.valt) do						local vowelalt if rfind(valt, "^ae") then vowelalt = "а-е" elseif rfind(valt, "^ao") then vowelalt = "а-о" elseif rfind(valt, "^avo") then vowelalt = "а-во" elseif rfind(valt, "^yo") then vowelalt = "ы-о" elseif valt == "oy" then vowelalt = "о-ы" elseif valt == "voa" then vowelalt = "во-а" else error("Internal error: Unrecognized vowel alternation: " .. valt) end m_table.insertIfNot(vowelalts, vowelalt) insert("nouns with " .. vowelalt .. " alternation") end end if reducible == nil then reducible = stress.reducible elseif reducible ~= stress.reducible then reducible = "mixed" end if stress.reducible then insert("nouns with reducible stem") end if stress.irregular_stem then m_table.insertIfNot(irregs, "irreg-stem") insert("nouns with irregular stem") end if stress.irregular_plstem then m_table.insertIfNot(irregs, "irreg-plstem") insert("nouns with irregular plural stem") end m_table.insertIfNot(stems, stress.vowel_stem) end end local key_entry = alternant_multiword_spec.first_noun or 1 if #alternant_multiword_spec.alternant_or_word_specs >= key_entry then local alternant_or_word_spec = alternant_multiword_spec.alternant_or_word_specs[key_entry] if alternant_or_word_spec.alternants then for _, multiword_spec in ipairs(alternant_or_word_spec.alternants) do					key_entry = multiword_spec.first_noun or 1 if #multiword_spec.word_specs >= key_entry then do_word_spec(multiword_spec.word_specs[key_entry]) end end else do_word_spec(alternant_or_word_spec) end end if #animacies > 0 then table.insert(annparts, table.concat(animacies, "/")) end if alternant_multiword_spec.number ~= "both" then table.insert(annparts, alternant_multiword_spec.number == "sg" and "sg-only" or "pl-only") end if #decldescs == 0 then table.insert(annparts, "indecl") else table.insert(annparts, table.concat(decldescs, " // ")) end if #patterns > 0 then table.insert(annparts, "accent-" .. table.concat(patterns, "/")) end if #vowelalts > 0 then table.insert(annparts, table.concat(vowelalts, "/")) end if reducible == "mixed" then table.insert(annparts, "mixed-reduc") elseif reducible then table.insert(annparts, "reduc") end if #irregs > 0 then table.insert(annparts, table.concat(irregs, " // ")) end alternant_multiword_spec.annotation = table.concat(annparts, " ") if #patterns > 1 then insert("nouns with multiple accent patterns") end if #stems > 1 then insert("nouns with multiple stems") end end alternant_multiword_spec.categories = cats end

local function show_forms(alternant_multiword_spec) local lemmas = {} if alternant_multiword_spec.forms.nom_s then for _, nom_s in ipairs(alternant_multiword_spec.forms.nom_s) do			table.insert(lemmas, com.remove_monosyllabic_accents(nom_s.form)) end elseif alternant_multiword_spec.forms.nom_p then for _, nom_p in ipairs(alternant_multiword_spec.forms.nom_p) do			table.insert(lemmas, com.remove_monosyllabic_accents(nom_p.form)) end end local props = { lang = lang, canonicalize = function(form) return com.remove_variant_codes(com.remove_monosyllabic_accents(form)) end, }	iut.show_forms_with_translit(alternant_multiword_spec.forms, lemmas,		output_noun_slots_with_linked, props, alternant_multiword_spec.footnotes,		"allow footnote symbols") end

local function make_table(alternant_multiword_spec) local forms = alternant_multiword_spec.forms

local table_spec_both = [=[ {title}{annotation} {\op}| style="background:#F9F9F9;text-align:center;min-width:45em" class="inflection-table" ! style="width:33%;background:#d9ebff" | ! style="background:#d9ebff" | singular ! style="background:#d9ebff" | plural !style="background:#eff7ff"|nominative !style="background:#eff7ff"|genitive !style="background:#eff7ff"|dative !style="background:#eff7ff"|accusative !style="background:#eff7ff"|instrumental !style="background:#eff7ff"|locative
 * {nom_s}
 * {nom_p}
 * {gen_s}
 * {gen_p}
 * {dat_s}
 * {dat_p}
 * {acc_s}
 * {acc_p}
 * {ins_s}
 * {ins_p}
 * {loc_s}
 * {loc_p}{voc_clause}{count_clause}
 * {\cl}{notes_clause} ]=]

local voc_clause_both = [=[

!style="background:#eff7ff"|vocative
 * {voc_s}
 * {voc_p}]=]

local count_clause_both = [=[

!style="background:#eff7ff"|count form
 * {count}]=]
 * {count}]=]

local table_spec_sg = [=[ {title}{annotation} {\op}| style="background:#F9F9F9;text-align:center;width:30em" class="inflection-table" ! style="width:33%;background:#d9ebff" | ! style="background:#d9ebff" | singular !style="background:#eff7ff"|nominative !style="background:#eff7ff"|genitive !style="background:#eff7ff"|dative !style="background:#eff7ff"|accusative !style="background:#eff7ff"|instrumental !style="background:#eff7ff"|locative
 * {nom_s}
 * {gen_s}
 * {dat_s}
 * {acc_s}
 * {ins_s}
 * {loc_s}{voc_clause}
 * {\cl}{notes_clause} ]=]

local voc_clause_sg = [=[

!style="background:#eff7ff"|vocative
 * {voc_s}]=]

local table_spec_pl = [=[ {title}{annotation} {\op}| style="background:#F9F9F9;text-align:center;width:30em" class="inflection-table" ! style="width:33%;background:#d9ebff" | ! style="background:#d9ebff" | plural !style="background:#eff7ff"|nominative !style="background:#eff7ff"|genitive !style="background:#eff7ff"|dative !style="background:#eff7ff"|accusative !style="background:#eff7ff"|instrumental !style="background:#eff7ff"|locative
 * {nom_p}
 * {gen_p}
 * {dat_p}
 * {acc_p}
 * {ins_p}
 * {loc_p}{voc_clause}{count_clause}
 * {\cl}{notes_clause} ]=]

local voc_clause_pl = [=[

!style="background:#eff7ff"|vocative
 * {voc_p}]=]

local count_clause_pl = [=[

!style="background:#eff7ff"|count form
 * {count}]=]

local notes_template = [===[ {footnote} ]===]

if alternant_multiword_spec.title then forms.title = alternant_multiword_spec.title else forms.title = 'Declension of ' .. forms.lemma .. '' end

local annotation = alternant_multiword_spec.annotation if annotation == "" then forms.annotation = "" else forms.annotation = " (" .. annotation .. " )" end

local table_spec = alternant_multiword_spec.number == "sg" and table_spec_sg or		alternant_multiword_spec.number == "pl" and table_spec_pl or		table_spec_both local voc_clause = alternant_multiword_spec.number == "sg" and forms.voc_s and forms.voc_s ~= "—" and voc_clause_sg or		alternant_multiword_spec.number == "pl" and forms.voc_p and forms.voc_p ~= "—" and voc_clause_pl or		alternant_multiword_spec.number == "both" and (			forms.voc_s and forms.voc_s ~= "—" or forms.voc_p and forms.voc_p ~= "—"		) and voc_clause_both forms.voc_clause = voc_clause and m_string_utilities.format(voc_clause, forms) or "" local count_clause = alternant_multiword_spec.number == "pl" and forms.count and forms.count ~= "—" and count_clause_pl or		alternant_multiword_spec.number == "both" and forms.count and forms.count ~= "—" and count_clause_both forms.count_clause = count_clause and m_string_utilities.format(count_clause, forms) or "" forms.notes_clause = forms.footnote ~= "" and m_string_utilities.format(notes_template, forms) or "" return m_string_utilities.format(table_spec, forms) end

local function compute_headword_genders(alternant_multiword_spec) local genders = {} local number if alternant_multiword_spec.number == "pl" then number = "-p" else number = "" end iut.map_word_specs(alternant_multiword_spec, function(base)		local animacy = base.animacy		if animacy == "inan" then			animacy = "in"		end		if base.gender == "MF" then			m_table.insertIfNot(genders, "m-" .. animacy .. number)			m_table.insertIfNot(genders, "f-" .. animacy .. number)		elseif base.gender == "M" then			m_table.insertIfNot(genders, "m-" .. animacy .. number)		elseif base.gender == "F" then			m_table.insertIfNot(genders, "f-" .. animacy .. number)		elseif base.gender == "N" then			m_table.insertIfNot(genders, "n-" .. animacy .. number)		else			error("Internal error: Unrecognized gender '" .. (base.gender or "nil") .. "'")		end	end) return genders end

local stem_expl = { ["hard"] = "a hard consonant", ["velar-stem"] = "a velar (-к, -г or -х)", ["soft"] = "a soft consonant", ["n-stem"] = "-м (with -ен- or -ён- in some forms)", ["t-stem"] = "-я or -а (with -т- or -ц- in most forms)", ["possessive"] = "-ов, -ав, -ев, -ёв, -ін or -ын", ["surname"] = "-ов, -ав, -ев, -ёв, -ін or -ын", }

local stem_to_declension = { ["hard third-declension"] = "third", ["soft third-declension"] = "third", ["fourth-declension"] = "fourth", ["t-stem"] = "fourth", ["n-stem"] = "fourth", }

local stem_gender_endings = { masculine = { ["hard"]             = {"a hard consonant", "-ы"}, ["velar-stem"]       = {"a velar", "-і"}, ["soft"]             = {"-ь", "-і"}, },   feminine = { ["hard"]             = {"-а", "-ы"}, ["velar-stem"]       = {"a velar", "-і"}, ["soft"]             = {"-я", "-і"}, ["hard third-declension"] = {"-р or a hushing consonant", "-ы"}, ["soft third-declension"] = {"-ь or -ў", "-і"}, },   neuter = { ["hard"]             = {"-а or -о", "-ы"}, ["velar-stem"]       = {"-а or -о", "-і"}, ["soft"]             = {"-е or -ё", "-і"}, ["fourth-declension"] = {"-я", "-і"}, ["t-stem"]           = {"-я or -а", "-ты"}, ["n-stem"]           = {"-я", "-ёны"}, }, }

local vowel_alternation_expl = { ["а-е"] = "unstressed -а- in the lemma and stressed -э- in some remaining forms, or unstressed -я- in the lemma and stressed or unstressed -е- in some remaining forms", ["а-о"] = "unstressed -а- in the lemma and stressed -о- in some remaining forms, or unstressed -я- in the lemma and stressed -ё- in some remaining forms", ["а-во"] = "unstressed (usually word-initial) а- in the lemma and stressed во- in some remaining forms", ["во-а"] = "stressed (usually word-initial) во- in the lemma and unstressed а- in some remaining forms", ["о-ы"] = "stressed -о- in the lemma and unstressed -ы- in some remaining forms", ["ы-о"] = "unstressed -ы- in the lemma and stressed -о- in some remaining forms", }

-- Implementation of template 'be-noun cat'. function export.catboiler(frame) local SUBPAGENAME = mw.title.getCurrentTitle.subpageText local params = { [1] = {},	}	local args = m_para.process(frame:getParent.args, params)

local function get_stem_gender_text(stem, genderspec) local gender = genderspec gender = rsub(gender, " in %-[ао]$", "") if not stem_gender_endings[gender] then error("Invalid gender '" .. gender .. "'") end local endings = stem_gender_endings[gender][stem] if not endings then error("Invalid stem type '" .. stem .. "'") end local sgending, plending = endings[1], endings[2] local stemtext = stem_expl[stem] and " The stem ends in " .. stem_expl[stem] .. "." or "" local decltext = rfind(stem, "declension") and "" or " This is traditionally considered to belong to the " .. (				stem_to_declension[stem] or gender == "feminine" and "first" or "second"			) .. " declension." local genderdesc if rfind(genderspec, "in %-[ао]$") then genderdesc = rsub(genderspec, "in (%-[ао])$", "~ ending in %1") else genderdesc = "usually " .. gender .. " ~"		end return stem .. ", " .. genderdesc .. ", normally ending in " .. sgending .. " in the nominative singular " .. " and " .. plending .. " in the nominative plural." .. stemtext .. decltext end

local function get_pos local pos = rmatch(SUBPAGENAME, "^Belarusian.- ([^ ]*)s ") if not pos then pos = rmatch(SUBPAGENAME, "^Belarusian.- ([^ ]*)s$") end if not pos then error("Invalid category name, should be e.g. \"Belarusian nouns with ...\" or \"Belarusian ... nouns\"") end return pos end

local function get_sort_key local pos, sort_key = rmatch(SUBPAGENAME, "^Belarusian.- ([^ ]*)s with (.*)$") if sort_key then return sort_key end pos, sort_key = rmatch(SUBPAGENAME, "^Belarusian ([^ ]*)s (.*)$") if sort_key then return sort_key end return rsub(SUBPAGENAME, "^Belarusian ", "") end

local cats = {}, pos

-- Insert the category CAT (a string) into the categories. String will -- have "Belarusian " prepended and ~ substituted for the plural part of speech. local function insert(cat, atbeg) local fullcat = "Belarusian " .. rsub(cat, "~", pos .. "s") if atbeg then table.insert(cats, 1, fullcat) else table.insert(cats, fullcat) end end

local maintext local stem, gender, stress, ending while true do		if args[1] then maintext = "~ " .. args[1] pos = get_pos break end -- First group is .* to capture e.g. "hard third-declension". stem, gender, stress, pos = rmatch(SUBPAGENAME, "^Belarusian (.*) (.-)%-form accent%-(.-) (.*)s$") if not stem then -- check for e.g. 'Belarusian hard masculine accent-a nouns in -а' stem, gender, stress, pos, ending = rmatch(SUBPAGENAME, "^Belarusian (.-) ([a-z]+ine) accent%-(.-) (.*)s in %-([ао])$") if stem then gender = gender .. " in -" .. ending end end if stem then local stem_gender_text = get_stem_gender_text(stem, gender) local accent_text = " This " .. pos .. " is stressed according to accent pattern " .. rsub(stress, "'", "&#39;") .. " (see Template:be-ndecl)." maintext = stem_gender_text .. accent_text insert("~ by stem type, gender and accent pattern|" .. get_sort_key) break end pos = rmatch(SUBPAGENAME, "^Belarusian indeclinable (.*)s$") if pos then maintext = "indeclinable ~, which normally have the same form for all cases and numbers." break end -- First group is .* to capture e.g. "hard third-declension". stem, gender, pos = rmatch(SUBPAGENAME, "^Belarusian (.*) (.-)%-form (.*)s$") if not stem then -- check for e.g. 'Belarusian hard masculine nouns in -а' stem, gender, pos, ending = rmatch(SUBPAGENAME, "^Belarusian (.-) ([a-z]+ine) (.*)s in %-([ао])$") if stem then gender = gender .. " in -" .. ending end end if stem then maintext = get_stem_gender_text(stem, gender) insert("~ by stem type and gender|" .. get_sort_key) break end stem, gender, stress, pos = rmatch(SUBPAGENAME, "^Belarusian (.*) (.-) adjectival accent%-(.-) (.*)s$") if not stem then stem, gender, pos = rmatch(SUBPAGENAME, "^Belarusian (.*) (.-) adjectival (.*)s$") end if stem then local adj_decl_endings = require("Module:User:Benwing2/be-adjective").adj_decl_endings if not stem_expl[stem] then error("Invalid stem type '" .. stem .. "'") end local stemtext = " The stem ends in " .. stem_expl[stem] .. "."			local stresstext = stress == "a" and "This " .. pos .. " is stressed according to accent pattern a (stress on the stem)." or				stress == "b" and "This " .. pos .. " is stressed according to accent pattern b (stress on the ending)." or "All ~ of this class are stressed according to accent pattern a (stress on the stem)." local stemspec if stem == "hard" then stemspec = stress == "a" and "hard stem-stressed" or "hard ending-stressed" else stemspec = stem end local endings = adj_decl_endings[stemspec] if not endings then error("Invalid stem spec '" .. stem .. "'") end local m, f, n, pl = unpack(endings) local sg = gender == "masculine" and m or				gender == "feminine" and f or				gender == "neuter" and n or				nil maintext = stem .. " " .. gender .. " ~, with adjectival endings, ending in " .. (sg and sg .. " in the nominative singular and " or "") .. pl .. " in the nominative plural." .. stemtext .. " " .. stresstext insert("~ by stem type, gender and accent pattern|" .. get_sort_key) break end local stress pos, stress = rmatch(SUBPAGENAME, "^Belarusian (.*)s with accent pattern (.*)$") if stress then maintext = "~ with accent pattern " .. rsub(stress, "'", "&#39;") .. " (see Template:be-ndecl)." insert("~ by accent pattern|" .. stress) break end local alternation pos, alternation = rmatch(SUBPAGENAME, "^Belarusian (.*)s with (.*%-.*) alternation$") if alternation then if not vowel_alternation_expl[alternation] then error("Invalid vowel alternation '" .. alternation .. "'") end maintext = "~ with vowel alternation between " .. vowel_alternation_expl[alternation] .. "."			insert("~ by vowel alternation|" .. alternation) break end error("Unrecognized Belarusian noun category name") end

insert("~|" .. get_sort_key, "at beginning")

local categories = {} for _, cat in ipairs(cats) do		table.insert(categories, "") end

return "This category contains Belarusian " .. rsub(maintext, "~", pos .. "s") .. "\n" .. mw.getCurrentFrame:expandTemplate{title="be-categoryTOC", args={}} .. table.concat(categories, "") end

-- Externally callable function to parse and decline a noun given user-specified arguments. -- Return value is WORD_SPEC, an object where the declined forms are in `WORD_SPEC.forms` -- for each slot. If there are no values for a slot, the slot key will be missing. The value -- for a given slot is a list of objects {form=FORM, footnotes=FOOTNOTES}. function export.do_generate_forms(parent_args, pos, from_headword, def) local params = { [1] = {required = true, default = "чало́"}, footnote = {list = true}, title = {}, }

if from_headword then params["lemma"] = {list = true} params["g"] = {list = true} params["f"] = {list = true} params["m"] = {list = true} params["adj"] = {list = true} params["dim"] = {list = true} params["id"] = {} end

local args = m_para.process(parent_args, params) local alternant_multiword_spec = iut.parse_alternant_multiword_spec(args[1], parse_indicator_spec) alternant_multiword_spec.title = args.title alternant_multiword_spec.footnotes = args.footnote alternant_multiword_spec.args = args normalize_all_lemmas(alternant_multiword_spec) detect_all_indicator_specs(alternant_multiword_spec) propagate_properties(alternant_multiword_spec, "animacy", "inan", "mixed") propagate_properties(alternant_multiword_spec, "number", "both", "both") -- The default of "M" should apply only to plural adjectives, where it doesn't matter. propagate_properties(alternant_multiword_spec, "gender", "M", "mixed") determine_noun_status(alternant_multiword_spec) local decline_props = { skip_slot = function(slot) return skip_slot(alternant_multiword_spec.number, slot) end, slot_table = output_noun_slots_with_linked, get_variants = com.get_variants, decline_word_spec = decline_noun, }	iut.decline_multiword_or_alternant_multiword_spec(alternant_multiword_spec, decline_props) compute_categories_and_annotation(alternant_multiword_spec) alternant_multiword_spec.genders = compute_headword_genders(alternant_multiword_spec) return alternant_multiword_spec end

-- Externally callable function to parse and decline a noun where all forms -- are given manually. Return value is WORD_SPEC, an object where the declined -- forms are in `WORD_SPEC.forms` for each slot. If there are no values for a -- slot, the slot key will be missing. The value for a given slot is a list of -- objects {form=FORM, footnotes=FOOTNOTES}. function export.do_generate_forms_manual(parent_args, number, pos, from_headword, def) if number ~= "sg" and number ~= "pl" and number ~= "both" then error("Internal error: number (arg 1) must be 'sg', 'pl' or 'both': '" .. number .. "'") end

local params = { footnote = {list = true}, title = {}, unknown_stress = {type = "boolean"}, }	if number == "both" then params[1] = {required = true, default = "бог"} params[2] = {required = true, default = "багі́"} params[3] = {required = true, default = "бо́га"} params[4] = {required = true, default = "баго́ў"} params[5] = {required = true, default = "бо́гу"} params[6] = {required = true, default = "бага́м"} params[7] = {required = true, default = "бо́га"} params[8] = {required = true, default = "баго́ў"} params[9] = {required = true, default = "бо́гам"} params[10] = {required = true, default = "бага́мі"} params[11] = {required = true, default = "бо́дзе"} params[12] = {required = true, default = "бага́х"} params[14] = {} if NAMESPACE == "Template" then params[13] = {default = "бо́жа"} params["count"] = {default = "бо́гі"} else params[13] = {} params["count"] = {} end elseif number == "sg" then params[1] = {required = true, default = "кроў"} params[2] = {required = true, default = "крыві́"} params[3] = {required = true, default = "крыві́"} params[4] = {required = true, default = "кроў"} params[5] = {required = true, default = "кро́ўю, крывёй"} params[6] = {required = true, default = "крыві́"} params[7] = {} else params[1] = {required = true, default = "дзве́ры"} params[2] = {required = true, default = "дзвярэ́й"} params[3] = {required = true, default = "дзвяра́м"} params[4] = {required = true, default = "дзве́ры"} params[5] = {required = true, default = "дзвяра́мі, дзвяры́ма, дзвярмі́"} params[6] = {required = true, default = "дзвяра́х"} params[7] = {} params["count"] = {} end

local args = m_para.process(parent_args, params) local alternant_spec = { title = args.title, footnotes = args.footnote, forms = {}, number = number, manual = true, }	process_manual_overrides(alternant_spec.forms, args, alternant_spec.number, args.unknown_stress) compute_categories_and_annotation(alternant_spec) return alternant_spec end

-- Entry point for. Template-callable function to parse and decline a noun given -- user-specified arguments and generate a displayable table of the declined forms. function export.show(frame) local parent_args = frame:getParent.args local alternant_multiword_spec = export.do_generate_forms(parent_args) show_forms(alternant_multiword_spec) return make_table(alternant_multiword_spec) .. require("Module:utilities").format_categories(alternant_multiword_spec.categories, lang) end

-- Entry point for, and. -- Template-callable function to parse and decline a noun given manually-specified inflections -- and generate a displayable table of the declined forms. function export.show_manual(frame) local iparams = { [1] = {required = true}, }	local iargs = m_para.process(frame.args, iparams) local parent_args = frame:getParent.args local alternant_spec = export.do_generate_forms_manual(parent_args, iargs[1]) show_forms(alternant_spec) return make_table(alternant_spec) .. require("Module:utilities").format_categories(alternant_spec.categories, lang) end

-- Concatenate all forms of all slots into a single string of the form -- "SLOT=FORM,FORM,...|SLOT=FORM,FORM,...|...". Embedded pipe symbols (as might occur -- in embedded links) are converted to <!>. If INCLUDE_PROPS is given, also include -- additional properties (currently, g= for headword genders). This is for use by bots. local function concat_forms(alternant_spec, include_props) local ins_text = {} for slot, _ in pairs(output_noun_slots_with_linked) do		local formtext = iut.concat_forms_in_slot(alternant_spec.forms[slot]) if formtext then table.insert(ins_text, slot .. "=" .. formtext) end end if include_props then table.insert(ins_text, "g=" .. table.concat(alternant_spec.genders, ",")) end return table.concat(ins_text, "|") end

-- Template-callable function to parse and decline a noun given user-specified arguments and return -- the forms as a string "SLOT=FORM,FORM,...|SLOT=FORM,FORM,...|...". Embedded pipe symbols (as might -- occur in embedded links) are converted to <!>. If |include_props=1 is given, also include -- additional properties (currently, none). This is for use by bots. function export.generate_forms(frame) local include_props = frame.args["include_props"] local parent_args = frame:getParent.args local alternant_spec = export.do_generate_forms(parent_args) return concat_forms(alternant_spec, include_props) end

--[=[

Example of use:

НВ вяхі́р, вехіра́, вехіру́, вехіро́м, вехіры́; мн. НВ вехіры́, вехіро́ў, вехіра́м, вехіра́мі, вехіра́х НВ бяскра́йнасць, РДМ бяскра́йнасці, бяскра́йнасцю

]=] function export.nazdecl(frame) local params = { [1] = {required = true} }	local parargs = frame:getParent.args local args = require("Module:parameters").process(parargs, params) local forms = args[1] local function get_orig return "original follows: " end local function normalize_caseform(caseform) -- Check for cases like "сіні́цай (-аю)". In such a situation, -- try to match the first letter of the suffix with the last -- occurrence of the same letter in the base form. local form, suffix = rmatch(caseform, "(.-) %(%-(.*)%)$") if form then local firstletter = usub(suffix, 1, 1) for i=ulen(form),1,-1 do				if usub(form, i, i) == firstletter then return form .. ", " .. usub(form, 1, i - 1) .. suffix end end return form .. ", " .. form .. suffix end return rsub(caseform, " %((.-)%)", ", %1") end local function process_sg_or_pl(forms_to_parse) forms_to_parse = rsplit(forms_to_parse, " *, *") local slots = { ["Н"] = 1, ["Р"] = 2, ["Д"] = 3, ["В"] = 4, ["Т"] = 5, ["М"] = 6, }		local forms = {} for _, form in ipairs(forms_to_parse) do			if rfind(form, "^[НВРДТМ]+ ") then local cases, caseform = rmatch(form, "^([НВРДТМ]+) (.*)$") for _, case in ipairs(rsplit(cases, "")) do					-- assert(not forms[slots[case]]) forms[slots[case]] = normalize_caseform(caseform) end else for i=1,6 do					if not forms[i] then forms[i] = normalize_caseform(form) break end end end end return forms end if rfind(forms, ";") then local sg_and_pl = rsplit(forms, " *; *") if #sg_and_pl ~= 2 then return "Saw too many semicolons, expected only one; " .. get_orig end local sg, pl = unpack(sg_and_pl) pl = rsub(pl, "^мн%. *", "") sg = process_sg_or_pl(sg) pl = process_sg_or_pl(pl) local parts = {} table.insert(parts, "") return table.concat(parts) else local sg = process_sg_or_pl(forms) for i=1,6 do			if not sg[i] then return "Not enough parts; " .. get_orig end end return "" end end

return export