|
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| Line 17: |
Line 17: |
| local infinity = math.huge | | local infinity = math.huge |
| local checkType = libraryUtil.checkType | | local checkType = libraryUtil.checkType |
| local checkTypeMulti = libraryUtil.checkTypeMulti
| |
|
| |
|
| --[[ | | --[[ |
| Line 252: |
Line 251: |
| ------------------------------------------------------------------------------------ | | ------------------------------------------------------------------------------------ |
| --]] | | --]] |
|
| |
| function p.size(t) | | function p.size(t) |
| checkType('size', 1, t, 'table') | | checkType('size', 1, t, 'table') |
| Line 260: |
Line 258: |
| end | | end |
| return i | | return i |
| end
| |
|
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|
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| local function defaultKeySort(item1, item2)
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| -- "number" < "string", so numbers will be sorted before strings.
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| local type1, type2 = type(item1), type(item2)
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| if type1 ~= type2 then
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| return type1 < type2
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| else -- This will fail with table, boolean, function.
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| return item1 < item2
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| end
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| end
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|
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| --[[
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| Returns a list of the keys in a table, sorted using either a default
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| comparison function or a custom keySort function.
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| ]]
| |
| function p.keysToList(t, keySort, checked)
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| if not checked then
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| checkType('keysToList', 1, t, 'table')
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| checkTypeMulti('keysToList', 2, keySort, { 'function', 'boolean', 'nil' })
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| end
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|
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| local list = {}
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| local index = 1
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| for key, value in pairs(t) do
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| list[index] = key
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| index = index + 1
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| end
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|
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| if keySort ~= false then
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| keySort = type(keySort) == 'function' and keySort or defaultKeySort
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|
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| table.sort(list, keySort)
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| end
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|
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| return list
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| end
| |
|
| |
| --[[
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| Iterates through a table, with the keys sorted using the keysToList function.
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| If there are only numerical keys, sparseIpairs is probably more efficient.
| |
| ]]
| |
| function p.sortedPairs(t, keySort)
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| checkType('sortedPairs', 1, t, 'table')
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| checkType('sortedPairs', 2, keySort, 'function', true)
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|
| |
| local list = p.keysToList(t, keySort, true)
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|
| |
| local i = 0
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| return function()
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| i = i + 1
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| local key = list[i]
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| if key ~= nil then
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| return key, t[key]
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| else
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| return nil, nil
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| end
| |
| end
| |
| end
| |
|
| |
| --[[
| |
| Returns true if all keys in the table are consecutive integers starting at 1.
| |
| --]]
| |
| function p.isArray(t)
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| checkType("isArray", 1, t, "table")
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|
| |
| local i = 0
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| for k, v in pairs(t) do
| |
| i = i + 1
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| if t[i] == nil then
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| return false
| |
| end
| |
| end
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| return true
| |
| end
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|
| |
| -- { "a", "b", "c" } -> { a = 1, b = 2, c = 3 }
| |
| function p.invert(array)
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| checkType("invert", 1, array, "table")
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|
| |
| local map = {}
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| for i, v in ipairs(array) do
| |
| map[v] = i
| |
| end
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|
| |
| return map
| |
| end
| |
|
| |
| --[[
| |
| { "a", "b", "c" } -> { ["a"] = true, ["b"] = true, ["c"] = true }
| |
| --]]
| |
| function p.listToSet(t)
| |
| checkType("listToSet", 1, t, "table")
| |
|
| |
| local set = {}
| |
| for _, item in ipairs(t) do
| |
| set[item] = true
| |
| end
| |
|
| |
| return set
| |
| end
| |
|
| |
| --[[
| |
| Recursive deep copy function.
| |
| Preserves identities of subtables.
| |
|
| |
| ]]
| |
| local function _deepCopy(orig, includeMetatable, already_seen)
| |
| -- Stores copies of tables indexed by the original table.
| |
| already_seen = already_seen or {}
| |
|
| |
| local copy = already_seen[orig]
| |
| if copy ~= nil then
| |
| return copy
| |
| end
| |
|
| |
| if type(orig) == 'table' then
| |
| copy = {}
| |
| for orig_key, orig_value in pairs(orig) do
| |
| copy[deepcopy(orig_key, includeMetatable, already_seen)] = deepcopy(orig_value, includeMetatable, already_seen)
| |
| end
| |
| already_seen[orig] = copy
| |
|
| |
| if includeMetatable then
| |
| local mt = getmetatable(orig)
| |
| if mt ~= nil then
| |
| local mt_copy = deepcopy(mt, includeMetatable, already_seen)
| |
| setmetatable(copy, mt_copy)
| |
| already_seen[mt] = mt_copy
| |
| end
| |
| end
| |
| else -- number, string, boolean, etc
| |
| copy = orig
| |
| end
| |
| return copy
| |
| end
| |
|
| |
| function p.deepCopy(orig, noMetatable, already_seen)
| |
| checkType("deepCopy", 3, already_seen, "table", true)
| |
|
| |
| return _deepCopy(orig, not noMetatable, already_seen)
| |
| end
| |
|
| |
| --[[
| |
| Concatenates all values in the table that are indexed by a number, in order.
| |
| sparseConcat{ a, nil, c, d } => "acd"
| |
| sparseConcat{ nil, b, c, d } => "bcd"
| |
| ]]
| |
| function p.sparseConcat(t, sep, i, j)
| |
| local list = {}
| |
|
| |
| local list_i = 0
| |
| for _, v in p.sparseIpairs(t) do
| |
| list_i = list_i + 1
| |
| list[list_i] = v
| |
| end
| |
|
| |
| return table.concat(list, sep, i, j)
| |
| end
| |
|
| |
| --[[
| |
| -- This returns the length of a table, or the first integer key n counting from
| |
| -- 1 such that t[n + 1] is nil. It is similar to the operator #, but may return
| |
| -- a different value when there are gaps in the array portion of the table.
| |
| -- Intended to be used on data loaded with mw.loadData. For other tables, use #.
| |
| -- Note: #frame.args in frame object always be set to 0, regardless of
| |
| -- the number of unnamed template parameters, so use this function for
| |
| -- frame.args.
| |
| --]]
| |
| function p.length(t)
| |
| local i = 1
| |
| while t[i] ~= nil do
| |
| i = i + 1
| |
| end
| |
| return i - 1
| |
| end
| |
|
| |
| function p.inArray(arr, valueToFind)
| |
| checkType("inArray", 1, arr, "table")
| |
|
| |
| -- if valueToFind is nil, error?
| |
|
| |
| for _, v in ipairs(arr) do
| |
| if v == valueToFind then
| |
| return true
| |
| end
| |
| end
| |
|
| |
| return false
| |
| end | | end |
|
| |
|
| return p | | return p |
