Move anselme code into its own directory

anselme.lua

@@ -1,93 +0,0 @@
---- The main module.
-
--- Naming conventions:
--- * Classes
--- * everything_else
--- * (note: "classes" that are not meat to be instancied and are just here to benefit from inheritance fall into everything_else, e.g. parsing classes)
-
---- Usage:
--- ```lua
--- local anselme = require("anselme")
---
--- -- create a new state
--- local state = anselme.new()
--- state:load_stdlib()
---
--- -- read an anselme script file
--- local f = assert(io.open("script.ans"))
--- local script = anselme.parse(f:read("*a"), "script.ans")
--- f:close()
---
--- -- load the script in a new branch
--- local run_state = state:branch()
--- run_state:run(script)
---
--- -- run the script
--- while run_state:active() do
--- 	local e, data = run_state:step()
--- 	if e == "text" then
--- 		for _, l in ipairs(data) do
--- 			print(l:format(run_state))
--- 		end
--- 	elseif e == "choice" then
--- 		for i, l in ipairs(data) do
--- 			print(("%s> %s"):format(i, l:format(run_state)))
--- 		end
--- 		local choice = tonumber(io.read("*l"))
--- 		data:choose(choice)
--- 	elseif e == "return" then
--- 		run_state:merge()
--- 	elseif e == "error" then
--- 		error(data)
--- 	end
--- end
--- ```
-
--- LuaJIT compatibility
--- TODO: too heavyhanded
-if _VERSION == "Lua 5.1" then
-	package.path = "./?/init.lua;" .. package.path
-	table.unpack = unpack
-end
-
-local parser, State
-
-local anselme = {
-	--- Global version string. Follow semver.
-	version = "2.0.0-alpha",
-
-	--- Table containing per-category version numbers. Incremented by one for any change that may break compatibility.
-	versions = {
-		--- Version number for languages and standard library changes.
-		language = 27,
-		--- Version number for save/AST format changes.
-		save = 4,
-		--- Version number for Lua API changes.
-		api = 8
-	},
-
-	--- Parse a `code` string and return the generated AST.
-	--
-	-- `source` is an optional string; it will be used as the code source name in error messages.
-	--
-	-- Usage:
-	-- ```lua
-	-- local ast = anselme.parse("1 + 2", "test")
-	-- ast:eval()
-	-- ```
-	parse = function(code, source)
-		return parser(code, source)
-	end,
-	--- Return a new [State](#state).
-	new = function()
-		return State:new()
-	end,
-}
-
-package.loaded[...] = anselme
-
-parser = require("parser")
-State = require("state.State")
-require("ast.abstract.Node"):_i_hate_cycles()
-
-return anselme