73 lines
2.3 KiB
Plaintext
73 lines
2.3 KiB
Plaintext
-- This file contains the datastructures used to represent parsed Nomsu syntax trees,
|
|
-- as well as the logic for converting them to Lua code.
|
|
utils = require 'utils'
|
|
{:repr, :stringify, :min, :max, :equivalent, :set, :is_list, :sum} = utils
|
|
immutable = require 'immutable'
|
|
{:insert, :remove, :concat} = table
|
|
{:Lua, :Nomsu, :Location} = require "code_obj"
|
|
|
|
MAX_LINE = 80 -- For beautification purposes, try not to make lines much longer than this value
|
|
|
|
Types = {}
|
|
Types.is_node = (n)->
|
|
type(n) == 'userdata' and getmetatable(n) and Types[n.type] == getmetatable(n)
|
|
|
|
-- Helper method:
|
|
Tree = (name, kind, methods)->
|
|
methods or= {}
|
|
assert((kind == 'single') or (kind == 'multi'))
|
|
is_multi = (kind == 'multi')
|
|
with methods
|
|
.with_value = (value)=> getmetatable(self)(value)
|
|
.type = name
|
|
.name = name
|
|
.is_multi = is_multi
|
|
.map = (fn)=>
|
|
if type(fn) == 'table'
|
|
return @ unless next(fn)
|
|
if type(next(fn)) == 'string'
|
|
error("SHIT")
|
|
_replacements = fn
|
|
fn = (k)-> _replacements[k]
|
|
return @_map(fn)
|
|
if is_multi
|
|
.__tostring = => "#{@name}(#{table.concat [repr(v) for v in *@], ', '})"
|
|
._map = (fn)=>
|
|
if ret = fn(@)
|
|
return ret
|
|
new_vals = [v._map and v\_map(fn) or v for v in *@]
|
|
ret = getmetatable(self)(unpack(new_vals))
|
|
return ret
|
|
else
|
|
.__tostring = => "#{@name}(#{repr(@value)})"
|
|
._map = (fn)=>
|
|
fn(@) or @
|
|
|
|
if is_multi
|
|
Types[name] = immutable nil, methods
|
|
else
|
|
Types[name] = immutable {"value"}, methods
|
|
|
|
Tree "Block", 'multi'
|
|
Tree "EscapedNomsu", 'multi'
|
|
Tree "Text", 'multi'
|
|
Tree "List", 'multi'
|
|
Tree "Dict", 'multi'
|
|
Tree "DictEntry", 'multi'
|
|
Tree "IndexChain", 'multi'
|
|
Tree "Number", 'single'
|
|
Tree "Comment", 'single'
|
|
|
|
Tree "Var", 'single',
|
|
as_lua_id: =>
|
|
"_"..(@value\gsub("%W", (c)-> if c == "_" then "__" else ("_%x")\format(c\byte!)))
|
|
|
|
Tree "Action", 'multi',
|
|
get_stub: (include_names=false)=>
|
|
if include_names
|
|
concat [type(a) == "string" and a or "%#{a.value}" for a in *@], " "
|
|
else
|
|
concat [type(a) == "string" and a or "%" for a in *@], " "
|
|
|
|
return Types
|