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-- This file contains container classes, i.e. Lists, Dicts, and Sets
{:insert,:remove,:concat} = table
{:equivalent, :nth_to_last, :size} = require 'utils'
lpeg = require 'lpeg'
re = require 're'
local List, Dict
as_nomsu = =>
if type(@) == 'number'
return tostring(@)
if mt = getmetatable(@)
if _as_nomsu = mt.as_nomsu
return _as_nomsu(@)
error("Not supported: #{@}")
as_lua = =>
if type(@) == 'number'
return tostring(@)
if mt = getmetatable(@)
if _as_lua = mt.as_lua
return _as_lua(@)
error("Not supported: #{@}")
-- List and Dict classes to provide basic equality/tostring functionality for the tables
-- used in Nomsu. This way, they retain a notion of whether they were originally lists or dicts.
_list_mt =
__type: "List"
__eq:equivalent
-- Could consider adding a __newindex to enforce list-ness, but would hurt performance
__tostring: =>
"["..concat([tostring(b) for b in *@], ", ").."]"
as_nomsu: =>
"["..concat([as_nomsu(b) for b in *@], ", ").."]"
as_lua: =>
"_List{"..concat([as_lua(b) for b in *@], ", ").."}"
__lt: (other)=>
assert type(@) == 'table' and type(other) == 'table', "Incompatible types for comparison"
for i=1,math.max(#@, #other)
if not @[i] and other[i] then return true
elseif @[i] and not other[i] then return false
elseif @[i] < other[i] then return true
elseif @[i] > other[i] then return false
return false
__le: (other)=>
assert type(@) == 'table' and type(other) == 'table', "Incompatible types for comparison"
for i=1,math.max(#@, #other)
if not @[i] and other[i] then return true
elseif @[i] and not other[i] then return false
elseif @[i] < other[i] then return true
elseif @[i] > other[i] then return false
return true
__add: (other)=>
ret = List[x for x in *@]
for x in *other
insert(ret, x)
return ret
__index:
add_1: insert, append_1: insert
add_1_at_index_2: (t,x,i)-> insert(t,i,x)
at_index_1_add_2: insert
pop: remove, remove_last: remove, remove_index_1: remove
last: (=> @[#@]), first: (=> @[1])
_1_st_to_last:nth_to_last, _1_nd_to_last:nth_to_last
_1_rd_to_last:nth_to_last, _1_th_to_last:nth_to_last
-- TODO: use stringify() to allow joining misc. objects?
joined: => table.concat([tostring(x) for x in *@]),
joined_with_1: (glue)=> table.concat([tostring(x) for x in *@], glue),
has_1: (item)=>
for x in *@
if x == item
return true
return false
index_of_1: (item)=>
for i,x in ipairs @
if x == item
return i
return nil
slice_1_to_2: (start, stop)=>
n = #@
start = (n+1-start) if n < 0
stop = (n+1-stop) if n < 0
return [@[i] for i=start,stop]
-- TODO: remove this safety check to get better performance?
__newindex: (k,v)=>
assert type(k) == 'number', "List indices must be numbers"
rawset(@, k, v)
List = (t)-> setmetatable(t, _list_mt)
walk_items = (i)=>
i = i + 1
k, v = next(@table, @key)
if k != nil
@key = k
return i, Dict{key:k, value:v}
_dict_mt =
__type: "Dict"
__eq:equivalent
__len:size
__tostring: =>
"{"..concat(["#{tostring(k)}: #{tostring(v)}" for k,v in pairs @], ", ").."}"
as_nomsu: =>
"{"..concat(["#{as_nomsu(k)}: #{as_nomsu(v)}" for k,v in pairs @], ", ").."}"
as_lua: =>
"_Dict{"..concat(["[ #{as_lua(k)}]= #{as_lua(v)}" for k,v in pairs @], ", ").."}"
__ipairs: => walk_items, {table:@, key:nil}, 0
__band: (other)=>
Dict{k,v for k,v in pairs(@) when other[k] != nil}
__bor: (other)=>
ret = {k,v for k,v in pairs(@)}
for k,v in pairs(other)
if ret[k] == nil then ret[k] = v
return Dict(ret)
__bxor: (other)=>
ret = {k,v for k,v in pairs(@)}
for k,v in pairs(other)
if ret[k] == nil then ret[k] = v
else ret[k] = nil
return Dict(ret)
__add: (other)=>
ret = {k,v for k,v in pairs(@)}
for k,v in pairs(other)
if ret[k] == nil then ret[k] = v
else ret[k] += v
return Dict(ret)
__sub: (other)=>
ret = {k,v for k,v in pairs(@)}
for k,v in pairs(other)
if ret[k] == nil then ret[k] = -v
else ret[k] -= v
return Dict(ret)
Dict = (t)-> setmetatable(t, _dict_mt)
for i,entry in ipairs(Dict({x:99}))
assert(i == 1 and entry.key == "x" and entry.value == 99, "ipairs compatibility issue")
do
{:reverse, :upper, :lower, :find, :byte, :match, :gmatch, :gsub, :sub, :format, :rep} = string
string2 = require 'string2'
{:lines, :line, :line_at, :as_lua_id, :is_lua_id} = string2
text_methods =
formatted_with_1:format, byte_1:byte, position_of_1:find, position_of_1_after_2:find,
as_a_lua_identifier: as_lua_id, is_a_lua_identifier: is_lua_id,
as_a_lua_id: as_lua_id, is_a_lua_id: is_lua_id,
bytes_1_to_2: (start, stop)=> List{byte(tostring(@), start, stop)}
[as_lua_id "with 1 -> 2"]: gsub
bytes: => List{byte(tostring(@), 1, -1)},
lines: => List(lines(@))
line_1: line
wrap_to_1: (maxlen)=>
_lines = {}
for line in *@lines!
while #line > maxlen
chunk = line\sub(1, maxlen)
split = chunk\find(' ', maxlen-8) or maxlen
chunk = line\sub(1, split)
line = line\sub(split+1, -1)
_lines[#_lines+1] = chunk
_lines[#_lines+1] = line
return table.concat(_lines, "\n")
line_at_1: (i)=> (line_at(@, i))
line_number_of_1: (i)=> select(2, line_at(@, i))
line_position_of_1: (i)=> select(3, line_at(@, i))
matches_1: (patt)=> match(@, patt) and true or false
matching_1: (patt)=> (match(@, patt))
matching_groups_1: (patt)=> {match(@, patt)}
[as_lua_id "* 1"]: (n)=> rep(@, n)
all_matches_of_1: (patt)=>
result = {}
stepper,x,i = gmatch(@, patt)
while true
tmp = List{stepper(x,i)}
break if #tmp == 0
i = tmp[1]
result[#result+1] = tmp
return List(result)
setmetatable(text_methods, {__index:string2})
getmetatable("").__methods = text_methods
getmetatable("").__index = (i)=>
-- Use [] for accessing text characters, or s[{3,4}] for s:sub(3,4)
if type(i) == 'number' then return sub(@, i, i)
elseif type(i) == 'table' then return sub(@, i[1], i[2])
else return text_methods[i]
getmetatable("").__add = (x)=> tostring(@)..tostring(x)
return {:List, :Dict}
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