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tl.lua
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tl.lua
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local _tl_compat; if (tonumber((_VERSION or ''):match('[%d.]*$')) or 0) < 5.3 then local p, m = pcall(require, 'compat53.module'); if p then _tl_compat = m end end; local assert = _tl_compat and _tl_compat.assert or assert; local debug = _tl_compat and _tl_compat.debug or debug; local io = _tl_compat and _tl_compat.io or io; local ipairs = _tl_compat and _tl_compat.ipairs or ipairs; local load = _tl_compat and _tl_compat.load or load; local math = _tl_compat and _tl_compat.math or math; local _tl_math_maxinteger = math.maxinteger or math.pow(2, 53); local os = _tl_compat and _tl_compat.os or os; local package = _tl_compat and _tl_compat.package or package; local pairs = _tl_compat and _tl_compat.pairs or pairs; local string = _tl_compat and _tl_compat.string or string; local table = _tl_compat and _tl_compat.table or table; local utf8 = _tl_compat and _tl_compat.utf8 or utf8
local VERSION = "0.15.3+dev+teal-compiler"
local stdlib = [=====[
do
global type any
global type thread
global type userdata
global record c
type int32_t = integer
type varadict = any
end
local enum FileStringMode
"a" "l" "L" "*a" "*l" "*L"
end
local enum FileNumberMode
"n" "*n"
end
local enum FileMode
"a" "l" "L" "*a" "*l" "*L" "n" "*n"
end
global record FILE
userdata
enum SeekWhence
"set" "cur" "end"
end
enum SetVBufMode
"no" "full" "line"
end
close: function(FILE): boolean, string, number
flush: function(FILE)
lines: function(FILE): (function(): (string))
lines: function(FILE, FileNumberMode...): (function(): (number...))
lines: function(FILE, (number | FileStringMode)...): (function(): (string...))
lines: function(FILE, (number | FileMode)...): (function(): ((string | number)...))
lines: function(FILE, (number | string)...): (function(): (string...))
read: function(FILE): string
read: function(FILE, FileNumberMode...): number...
read: function(FILE, (number | FileStringMode)...): string...
read: function(FILE, (number | FileMode)...): ((string | number)...)
read: function(FILE, (number | string)...): (string...)
seek: function(FILE, ? SeekWhence, ? integer): integer, string
setvbuf: function(FILE, SetVBufMode, ? integer)
write: function(FILE, (string | number)...): FILE, string
metamethod __close: function(FILE)
end
global record coroutine
type Function = function(any...): any...
close: function(thread): boolean, string
create: function(Function): thread
isyieldable: function(): boolean
resume: function(thread, any...): boolean, any...
running: function(): thread, boolean
status: function(thread): string
wrap: function<F>(F): F
yield: function(any...): any...
end
global record debug
record GetInfoTable
name: string
namewhat: string
source: string
short_src: string
linedefined: integer
lastlinedefined: integer
what: string
currentline: integer
istailcall: boolean
nups: integer
nparams: integer
isvararg: boolean
func: any
activelines: {integer:boolean}
end
enum HookEvent
"call" "tail call" "return" "line" "count"
end
type HookFunction = function(HookEvent, integer)
type AnyFunction = function(any...):any...
debug: function()
gethook: function(? thread): HookFunction, integer
getinfo: function(AnyFunction | integer): GetInfoTable
getinfo: function(AnyFunction | integer, string): GetInfoTable
getinfo: function(thread, AnyFunction | integer, string): GetInfoTable
getlocal: function(thread, AnyFunction, integer): string
getlocal: function(thread, integer, integer): string, any
getlocal: function(AnyFunction, integer): string
getlocal: function(integer, integer): string, any
getmetatable: function<T>(T): metatable<T>
getregistry: function(): {any:any}
getupvalue: function(AnyFunction, integer): any
getuservalue: function(userdata, integer): any
sethook: function(thread, HookFunction, string, ? integer)
sethook: function(HookFunction, string, ? integer)
setlocal: function(thread, integer, integer, any): string
setlocal: function(integer, integer, any): string
setmetatable: function<T>(T, metatable<T>): T
setupvalue: function(AnyFunction, integer, any): string
setuservalue: function<U>(U, any, integer): U --[[U is userdata]]
traceback: function(thread, ? string, ? integer): string
traceback: function(? string, ? integer): string
upvalueid: function(AnyFunction, integer): userdata
upvaluejoin: function(AnyFunction, integer, AnyFunction, integer)
end
global record io
enum OpenMode
"r" "w" "a" "r+" "w+" "a+"
"rb" "wb" "ab" "r+b" "w+b" "a+b"
"*r" "*w" "*a" "*r+" "*w+" "*a+"
"*rb" "*wb" "*ab" "*r+b" "*w+b" "*a+b"
end
close: function(? FILE)
input: function(? FILE): FILE
flush: function()
lines: function(? string): (function(): (string))
lines: function(? string, FileNumberMode...): (function(): (number...))
lines: function(? string, (number | FileStringMode)...): (function(): (string...))
lines: function(? string, (number | FileMode)...): (function(): ((string | number)...))
lines: function(? string, (number | string)...): (function(): (string...))
open: function(string, ? OpenMode): FILE, string, integer
output: function(? FILE): FILE
popen: function(string, ? OpenMode): FILE, string
read: function(): string
read: function(FileNumberMode...): number...
read: function((number | FileStringMode)...): string...
read: function((number | FileMode)...): ((string | number)...)
read: function((number | string)...): (string...)
stderr: FILE
stdin: FILE
stdout: FILE
tmpfile: function(): FILE
type: function(any): string
write: function((string | number)...): FILE, string
end
global record math
type Numeric = number | integer
abs: function<N is Numeric>(N): N
acos: function(number): number
asin: function(number): number
atan: function(number, ? number): number
atan2: function(number, number): number
ceil: function(number): integer
cos: function(number): number
cosh: function(number): number
deg: function(number): number
exp: function(number): number
floor: function(number): integer
fmod: function(integer, integer): integer
fmod: function(number, number): number
frexp: function(number): number, number
huge: number
ldexp: function(number, number): number
log: function(number, ? number): number
log10: function(number): number
max: function(integer...): integer
max: function((number | integer)...): number
max: function<T>(T...): T
max: function(any...): any
maxinteger: integer --[[needs_compat]]
min: function(integer...): integer
min: function((number | integer)...): number
min: function<T>(T...): T
min: function(any...): any
mininteger: integer --[[needs_compat]]
modf: function(number): integer, number
pi: number
pow: function(number, number): number
rad: function(number): number
random: function(integer, ? integer): integer
random: function(): number
randomseed: function(? integer, ? integer): integer, integer
sin: function(number): number
sinh: function(number): number
sqrt: function(number): number
tan: function(number): number
tanh: function(number): number
tointeger: function(any): integer
type: function(any): string
ult: function(number, number): boolean
end
global record metatable<T>
enum Mode
"k" "v" "kv"
end
__call: function(T, any...): any...
__mode: Mode
__name: string
__tostring: function(T): string
__pairs: function<K, V>(T): (function(): (K, V))
__index: any --[[FIXME: function | table | anything with an __index metamethod]]
__newindex: any --[[FIXME: function | table | anything with an __index metamethod]]
__gc: function(T)
__close: function(T)
__add: function(any, any): any
__sub: function(any, any): any
__mul: function(any, any): any
__div: function(any, any): any
__idiv: function(any, any): any
__mod: function(any, any): any
__pow: function(any, any): any
__band: function(any, any): any
__bor: function(any, any): any
__bxor: function(any, any): any
__shl: function(any, any): any
__shr: function(any, any): any
__concat: function(any, any): any
__len: function(T): any
__unm: function(T): any
__bnot: function(T): any
__eq: function(any, any): boolean
__lt: function(any, any): boolean
__le: function(any, any): boolean
end
global record os
record DateTable
year: integer
month: integer
day: integer
hour: integer
min: integer
sec: integer
wday: integer
yday: integer
isdst: boolean
end
enum DateMode
"!*t" "*t"
end
clock: function(): number
date: function(DateMode, ? number): DateTable
date: function(? string, ? number): string
difftime: function(integer, integer): number
execute: function(string): boolean, string, integer
exit: function(? (integer | boolean), ? boolean)
getenv: function(string): string
remove: function(string): boolean, string
rename: function(string, string): boolean, string
setlocale: function(string, ? string): string
time: function(? DateTable): integer
tmpname: function(): string
end
global record package
config: string
cpath: string
loaded: {string:any}
loadlib: function(string, string): (function)
loaders: { function(string): any, any }
path: string
preload: {any:any}
searchers: { function(string): any }
searchpath: function(string, string, ? string, ? string): string, string
end
global record string
byte: function(string, ? integer): integer
byte: function(string, integer, ? integer): integer...
char: function(integer...): string
dump: function(function(any...): (any), ? boolean): string
find: function(string, string, ? integer, ? boolean): integer, integer, string
format: function(string, any...): string
gmatch: function(string, string, ? integer): (function(): string...)
gsub: function(string, string, string, ? integer): string, integer
gsub: function(string, string, {string:string}, ? integer): string, integer
gsub: function(string, string, function(string...): (string | integer | boolean), ? integer): string, integer
len: function(string): integer
lower: function(string): string
match: function(string, string, ? integer): string...
pack: function(string, any...): string
packsize: function(string): integer
rep: function(string, integer, ? string): string
reverse: function(string): string
sub: function(string, integer, ? integer): string
unpack: function(string, string, ? integer): any...
upper: function(string): string
end
global record table
type SortFunction = function<A>(A, A): boolean
record PackTable<A>
is {A}
n: integer
end
concat: function({(string | number)}, ? string, ? integer, ? integer): string
insert: function<A>({A}, integer, A)
insert: function<A>({A}, A)
move: function<A>({A}, integer, integer, integer, ? {A}): {A}
pack: function<T>(T...): PackTable<T>
pack: function(any...): {any:any}
remove: function<A>({A}, ? integer): A
sort: function<A>({A}, ? SortFunction<A>)
unpack: function<A1, A2, A3, A4, A5>({A1, A2, A3, A4, A5}): A1, A2, A3, A4, A5 --[[needs_compat]]
unpack: function<A1, A2, A3, A4>({A1, A2, A3, A4}): A1, A2, A3, A4 --[[needs_compat]]
unpack: function<A1, A2, A3>({A1, A2, A3}): A1, A2, A3 --[[needs_compat]]
unpack: function<A1, A2>({A1, A2}): A1, A2 --[[needs_compat]]
unpack: function<A>({A}, ? number, ? number): A... --[[needs_compat]]
end
global record utf8
char: function(integer...): string
charpattern: string
codepoint: function(string, ? integer, ? integer, ? boolean): integer...
codes: function(string, ? boolean): (function(string, ? integer): (integer, integer))
len: function(string, ? integer, ? integer, ? boolean): integer
offset: function(string, integer, ? integer): integer
end
local record StandardLibrary
enum CollectGarbageCommand
"collect"
"count"
"stop"
"restart"
end
enum CollectGarbageSetValue
"step"
"setpause"
"setstepmul"
end
enum CollectGarbageIsRunning
"isrunning"
end
type LoadFunction = function(): string
enum LoadMode
"b" "t" "bt"
end
type XpcallMsghFunction = function(...: any): ()
arg: {string}
assert: function<A, B>(A, ? B): A
collectgarbage: function(? CollectGarbageCommand): number
collectgarbage: function(CollectGarbageSetValue, integer): number
collectgarbage: function(CollectGarbageIsRunning): boolean
collectgarbage: function(string, ? number): (boolean | number)
dofile: function(? string): any...
error: function(? any, ? integer)
getmetatable: function<T>(T): metatable<T>
ipairs: function<A>({A}): (function():(integer, A))
load: function((string | LoadFunction), ? string, ? LoadMode, ? table): (function, string)
load: function((string | LoadFunction), ? string, ? string, ? table): (function, string)
loadfile: function(? string, ? string, ? {any:any}): (function, string)
next: function<K, V>({K:V}, ? K): (K, V)
next: function<A>({A}, ? integer): (integer, A)
pairs: function<K, V>({K:V}): (function():(K, V))
pcall: function(function(any...):(any...), any...): boolean, any...
print: function(any...)
rawequal: function(any, any): boolean
rawget: function<K, V>({K:V}, K): V
rawget: function({any:any}, any): any
rawget: function(any, any): any
rawlen: function<A>({A}): integer
rawset: function<K, V>({K:V}, K, V): {K:V}
rawset: function({any:any}, any, any): {any:any}
rawset: function(any, any, any): any
require: function(string): any
select: function<T>(integer, T...): T...
select: function(integer, any...): any...
select: function(string, any...): integer
setmetatable: function<T>(T, metatable<T>): T
tonumber: function(any): number
tonumber: function(any, integer): integer
tostring: function(any): string
type: function(any): string
warn: function(string, string...)
xpcall: function(function(any...):(any...), XpcallMsghFunction, any...): boolean, any...
_VERSION: string
end
global arg <const> = StandardLibrary.arg
global assert <const> = StandardLibrary.assert
global collectgarbage <const> = StandardLibrary.collectgarbage
global dofile <const> = StandardLibrary.dofile
global error <const> = StandardLibrary.error
global getmetatable <const> = StandardLibrary.getmetatable
global load <const> = StandardLibrary.load
global loadfile <const> = StandardLibrary.loadfile
global next <const> = StandardLibrary.next
global pairs <const> = StandardLibrary.pairs
global pcall <const> = StandardLibrary.pcall
global print <const> = StandardLibrary.print
global rawequal <const> = StandardLibrary.rawequal
global rawget <const> = StandardLibrary.rawget
global rawlen <const> = StandardLibrary.rawlen
global rawset <const> = StandardLibrary.rawset
global require <const> = StandardLibrary.require
global select <const> = StandardLibrary.select
global setmetatable <const> = StandardLibrary.setmetatable
global tostring <const> = StandardLibrary.tostring
global tonumber <const> = StandardLibrary.tonumber
global ipairs <const> = StandardLibrary.ipairs
global type <const> = StandardLibrary.type
global xpcall <const> = StandardLibrary.xpcall
global _VERSION <const> = StandardLibrary._VERSION
end
]=====]
local Errors = {}
local tl = {PrettyPrintOptions = {}, TypeCheckOptions = {}, Env = {}, Result = {}, Error = {}, TypeInfo = {}, TypeReport = {}, EnvOptions = {}, }
local TypeReporter = {}
tl.version = function()
return VERSION
end
local wk = {
["unknown"] = true,
["unused"] = true,
["redeclaration"] = true,
["branch"] = true,
["hint"] = true,
["debug"] = true,
}
tl.warning_kinds = wk
tl.typecodes = {
NIL = 0x00000001,
NUMBER = 0x00000002,
BOOLEAN = 0x00000004,
STRING = 0x00000008,
TABLE = 0x00000010,
FUNCTION = 0x00000020,
USERDATA = 0x00000040,
THREAD = 0x00000080,
INTEGER = 0x00010002,
ENUM = 0x00010004,
EMPTY_TABLE = 0x00000008,
ARRAY = 0x00010008,
RECORD = 0x00020008,
MAP = 0x00040008,
TUPLE = 0x00080008,
INTERFACE = 0x00100008,
POLY = 0x20000020,
UNION = 0x40000000,
NOMINAL = 0x10000000,
TYPE_VARIABLE = 0x08000000,
ANY = 0xffffffff,
UNKNOWN = 0x80008000,
INVALID = 0x80000000,
}
local DEFAULT_GEN_COMPAT = "optional"
local DEFAULT_GEN_TARGET = "5.3"
local TL_DEBUG = os.getenv("TL_DEBUG")
local TL_DEBUG_MAXLINE = _tl_math_maxinteger
if TL_DEBUG then
local max = assert(tonumber(TL_DEBUG), "TL_DEBUG was defined, but not a number")
if max < 0 then
TL_DEBUG_MAXLINE = math.tointeger(-max)
elseif max > 1 then
local count = 0
local skip = nil
debug.sethook(function(event)
if event == "call" or event == "tail call" or event == "return" then
local info = debug.getinfo(2)
if skip then
if info.name == skip and event == "return" then
skip = nil
end
return
elseif (info.name or "?"):match("^tl_debug_") and event == "call" then
skip = info.name
return
end
local name = info.name or "<anon>", info.currentline > 0 and "@" .. info.currentline or ""
io.stderr:write(name, " :: ", event, "\n")
io.stderr:flush()
else
count = count + 100
if count > max then
error("Too many instructions")
end
end
end, "cr", 100)
end
end
do
local last_token_kind = {
["start"] = nil,
["any"] = nil,
["identifier"] = "identifier",
["got -"] = "op",
["got --"] = nil,
["got ."] = ".",
["got .."] = "op",
["got ="] = "op",
["got ~"] = "op",
["got ["] = "[",
["got 0"] = "number",
["got <"] = "op",
["got >"] = "op",
["got /"] = "op",
["got :"] = "op",
["got --["] = nil,
["string single"] = "$ERR invalid_string$",
["string single got \\"] = "$ERR invalid_string$",
["string double"] = "$ERR invalid_string$",
["string double got \\"] = "$ERR invalid_string$",
["string long"] = "$ERR invalid_string$",
["string long got ]"] = "$ERR invalid_string$",
["comment short"] = nil,
["comment long"] = "$ERR unfinished_comment$",
["comment long got ]"] = "$ERR unfinished_comment$",
["number dec"] = "integer",
["number decfloat"] = "number",
["number hex"] = "integer",
["number hexfloat"] = "number",
["number power"] = "number",
["number powersign"] = "$ERR invalid_number$",
}
local keywords = {
["and"] = true,
["break"] = true,
["do"] = true,
["else"] = true,
["elseif"] = true,
["end"] = true,
["false"] = true,
["for"] = true,
["function"] = true,
["goto"] = true,
["if"] = true,
["in"] = true,
["local"] = true,
["nil"] = true,
["not"] = true,
["or"] = true,
["repeat"] = true,
["return"] = true,
["then"] = true,
["true"] = true,
["until"] = true,
["while"] = true,
}
local lex_any_char_states = {
["\""] = "string double",
["'"] = "string single",
["-"] = "got -",
["."] = "got .",
["0"] = "got 0",
["<"] = "got <",
[">"] = "got >",
["/"] = "got /",
[":"] = "got :",
["="] = "got =",
["~"] = "got ~",
["["] = "got [",
}
for c = string.byte("a"), string.byte("z") do
lex_any_char_states[string.char(c)] = "identifier"
end
for c = string.byte("A"), string.byte("Z") do
lex_any_char_states[string.char(c)] = "identifier"
end
lex_any_char_states["_"] = "identifier"
for c = string.byte("1"), string.byte("9") do
lex_any_char_states[string.char(c)] = "number dec"
end
local lex_word = {}
for c = string.byte("a"), string.byte("z") do
lex_word[string.char(c)] = true
end
for c = string.byte("A"), string.byte("Z") do
lex_word[string.char(c)] = true
end
for c = string.byte("0"), string.byte("9") do
lex_word[string.char(c)] = true
end
lex_word["_"] = true
local lex_decimals = {}
for c = string.byte("0"), string.byte("9") do
lex_decimals[string.char(c)] = true
end
local lex_hexadecimals = {}
for c = string.byte("0"), string.byte("9") do
lex_hexadecimals[string.char(c)] = true
end
for c = string.byte("a"), string.byte("f") do
lex_hexadecimals[string.char(c)] = true
end
for c = string.byte("A"), string.byte("F") do
lex_hexadecimals[string.char(c)] = true
end
local lex_any_char_kinds = {}
local single_char_kinds = { "[", "]", "(", ")", "{", "}", ",", "#", ";", "?" }
for _, c in ipairs(single_char_kinds) do
lex_any_char_kinds[c] = c
end
for _, c in ipairs({ "+", "*", "|", "&", "%", "^" }) do
lex_any_char_kinds[c] = "op"
end
local lex_space = {}
for _, c in ipairs({ " ", "\t", "\v", "\n", "\r" }) do
lex_space[c] = true
end
local escapable_characters = {
a = true,
b = true,
f = true,
n = true,
r = true,
t = true,
v = true,
z = true,
["\\"] = true,
["\'"] = true,
["\""] = true,
["\r"] = true,
["\n"] = true,
}
local function lex_string_escape(input, i, c)
if escapable_characters[c] then
return 0, true
elseif c == "x" then
return 2, (
lex_hexadecimals[input:sub(i + 1, i + 1)] and
lex_hexadecimals[input:sub(i + 2, i + 2)])
elseif c == "u" then
if input:sub(i + 1, i + 1) == "{" then
local p = i + 2