batteries/init.lua

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--[[
batteries for lua
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a collection of helpful code to get your project off the ground faster
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]]
local path = ...
local function require_relative(p)
return require(table.concat({path, p}, "."))
end
--build the module
local _batteries = {
--
class = require_relative("class"),
--
assert = require_relative("assert"),
--extension libraries
mathx = require_relative("mathx"),
tablex = require_relative("tablex"),
stringx = require_relative("stringx"),
--sorting routines
sort = require_relative("sort"),
--
functional = require_relative("functional"),
--collections
sequence = require_relative("sequence"),
set = require_relative("set"),
--geom
vec2 = require_relative("vec2"),
vec3 = require_relative("vec3"),
intersect = require_relative("intersect"),
--
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timer = require_relative("timer"),
pubsub = require_relative("pubsub"),
unique_mapping = require_relative("unique_mapping"),
state_machine = require_relative("state_machine"),
async = require_relative("async"),
manual_gc = require_relative("manual_gc"),
colour = require_relative("colour"),
pretty = require_relative("pretty"),
make_pooled = require_relative("make_pooled"),
}
--assign aliases
for _, alias in ipairs({
{"mathx", "math"},
{"tablex", "table"},
{"stringx", "string"},
{"sort", "stable_sort"},
{"colour", "color"},
}) do
_batteries[alias[2]] = _batteries[alias[1]]
end
--easy export globally if required
function _batteries:export()
--export all key strings globally, if doesn't already exist
for k, v in pairs(self) do
if _G[k] == nil then
_G[k] = v
end
end
--overlay tablex and functional and sort routines onto table
self.tablex.overlay(table, self.tablex)
--now we can use it through table directly
table.overlay(table, self.functional)
self.sort:export()
--overlay onto global math table
table.overlay(math, self.mathx)
--overlay onto string
table.overlay(string, self.stringx)
--overwrite assert wholesale (it's compatible)
assert = self.assert
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--export the whole library to global `batteries`
batteries = self
return self
end
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--convert naming, for picky eaters
--experimental, let me know how it goes
function _batteries:camelCase()
--not part of stringx for now, because it's not necessarily utf8 safe
local function capitalise(s)
local head = s:sub(1,1)
local tail = s:sub(2)
return head:upper() .. tail
end
--any acronyms to fully capitalise to avoid "Rgb" and the like
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local acronyms = _batteries.set{"rgb", "rgba", "argb", "hsl", "xy", "gc", "aabb",}
local function caps_acronym(s)
if acronyms:has(s) then
s = s:upper()
end
return s
end
--convert something_like_this to somethingLikeThis
local function snake_to_camel(s)
local chunks = _batteries.sequence(_batteries.stringx.split(s, "_"))
chunks:remap(caps_acronym)
local first = chunks:shift()
chunks:remap(capitalise)
chunks:unshift(first)
return chunks:concat("")
end
--convert all named properties
--(keep the old ones around as well)
--(we take a copy of the keys here cause we're going to be inserting new keys as we go)
for _, k in ipairs(_batteries.tablex.keys(self)) do
local v = self[k]
if
--only convert string properties
type(k) == "string"
--ignore private and metamethod properties
and not _batteries.stringx.starts_with(k, "_")
then
--convert
local camel = snake_to_camel(k)
if type(v) == "table" then
--capitalise classes
if v.__index == v then
camel = capitalise(camel)
--modify the internal name for :type()
--might be a problem for serialisation etc,
--but i imagine converting to/from camelCase mid-project is rare
v.__name = camel
end
--recursively convert anything nested as well
_batteries.camelCase(v)
end
--assign if the key changed and there isn't a matching key
if k ~= camel and self[camel] == nil then
self[camel] = v
end
end
end
return self
end
return _batteries