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---@class java-core.List

local M = {}

---Returns a new list

---@param o? table

---@return java-core.List

function M:new(o)

o = o or {}

setmetatable(o, self)

self.__index = self

return o

end

---Appends a value into to the list

---@param value any

function M:push(value)

table.insert(self, value)

end

---Appends a value into to the list

---@param value any

function M:push_if(condition, value)

if condition then

self:push(value)

end

---Finds the matching value in a list

---@param finder fun(value: any): boolean

---@return any

function M:find(finder)

for _, value in ipairs(self) do

if finder(value) then

return value

end

return nil

end

--- Finds the matching value in a list before a given index

--- @param finder fun(value: any): boolean

--- @return boolean

function M:contains(finder)

if type(finder) == 'function' then

for _, value in ipairs(self) do

if finder(value) then

return true

end

else

for _, value in ipairs(self) do

if value == finder then

return true

end

return false

end

--- Finds the matching value in a list after a given index

---

--- @param finder fun(value: any): boolean

--- @return number

function M:find_index(finder)

for i, value in ipairs(self) do

if finder(value) then

return i

end

return -1

end

--- Finds the matching value in a list after a given index

---@param index number

---@param finder fun(value: any): boolean

---@return any|nil

function M:find_after(index, finder)

for i, value in ipairs(self) do

if i > index and finder(value) then

return value

end

---Returns a list of mapped values

---@param mapper fun(value: any, index: number): any

---@return java-core.List

function M:map(mapper)

local mapped = M:new()

for i, v in ipairs(self) do

mapped:push(mapper(v, i))

end

return mapped

end

---Flatten a list

---@return java-core.List

function M:flatten()

local flatten = M:new()

for _, v1 in ipairs(self) do

for _, v2 in ipairs(v1) do

flatten:push(v2)

end

return flatten

end

---Merge a given list values to current list

---@param list any[]

---@return java-core.List

function M:concat(list)

local new_list = M:new()

for _, v in ipairs(self) do

new_list:push(v)

end

for _, v in ipairs(list) do

new_list:push(v)

end

return new_list

end

function M:includes(value)

for _, v in ipairs(self) do

if v == value then

return true

end

return false

end

---Join list items to a string

---@param separator string

---@return string

function M:join(separator)

return table.concat(self, separator)

end

---Calls the given callback for each element

---@param callback fun(value: any, index: integer)

function M:for_each(callback)

for i, v in ipairs(self) do

callback(v, i)

end

---Returns true if every element in the list passes the validation

---@param validator fun(value: any, index: integer): boolean

---@return boolean

function M:every(validator)

for i, v in ipairs(self) do

if not validator(v, i) then

return false

end

return true

end

---Returns a filtered list

---@param filter fun(value: any, index: integer): boolean

---@return java-core.List

function M:filter(filter)

local new_list = M:new()

self:for_each(function(value, index)

if filter(value, index) then

new_list:push(value)

end

end)

return new_list

end

return M

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