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-- $Id: testes/literals.lua $

-- See Copyright Notice in file lua.h

print('testing scanner')

global <const> *

local debug = require "debug"

local function dostring (x) return assert(load(x), "")() end

dostring("x \v\f = \t\r 'a\0a' \v\f\f")

assert(x == 'a\0a' and string.len(x) == 3)

_G.x = nil

-- escape sequences

assert('\n\"\'\\' == [[

"'\]])

assert(string.find("\a\b\f\n\r\t\v", "^%c%c%c%c%c%c%c$"))

-- assume ASCII just for tests:

assert("\09912" == 'c12')

assert("\99ab" == 'cab')

assert("\099" == '\99')

assert("\099\n" == 'c\10')

assert('\0\0\0alo' == '\0' .. '\0\0' .. 'alo')

assert(010 .. 020 .. -030 == "1020-30")

-- hexadecimal escapes

assert("\x00\x05\x10\x1f\x3C\xfF\xe8" == "\0\5\16\31\60\255\232")

local function lexstring (x, y, n)

local f = assert(load('return ' .. x ..

', require"debug".getinfo(1).currentline', ''))

local s, l = f()

assert(s == y and l == n)

end

lexstring("'abc\\z \n efg'", "abcefg", 2)

lexstring("'abc\\z \n\n\n'", "abc", 4)

lexstring("'\\z \n\t\f\v\n'", "", 3)

lexstring("[[\nalo\nalo\n\n]]", "alo\nalo\n\n", 5)

lexstring("[[\nalo\ralo\n\n]]", "alo\nalo\n\n", 5)

lexstring("[[\nalo\ralo\r\n]]", "alo\nalo\n", 4)

lexstring("[[\ralo\n\ralo\r\n]]", "alo\nalo\n", 4)

lexstring("[[alo]\n]alo]]", "alo]\n]alo", 2)

assert("abc\z

def\z

ghi\z

" == 'abcdefghi')

-- UTF-8 sequences

assert("\u{0}\u{00000000}\x00\0" == string.char(0, 0, 0, 0))

-- limits for 1-byte sequences

assert("\u{0}\u{7F}" == "\x00\x7F")

-- limits for 2-byte sequences

assert("\u{80}\u{7FF}" == "\xC2\x80\xDF\xBF")

-- limits for 3-byte sequences

assert("\u{800}\u{FFFF}" == "\xE0\xA0\x80\xEF\xBF\xBF")

-- limits for 4-byte sequences

assert("\u{10000}\u{1FFFFF}" == "\xF0\x90\x80\x80\xF7\xBF\xBF\xBF")

-- limits for 5-byte sequences

assert("\u{200000}\u{3FFFFFF}" == "\xF8\x88\x80\x80\x80\xFB\xBF\xBF\xBF\xBF")

-- limits for 6-byte sequences

assert("\u{4000000}\u{7FFFFFFF}" ==

"\xFC\x84\x80\x80\x80\x80\xFD\xBF\xBF\xBF\xBF\xBF")

-- Error in escape sequences

local function lexerror (s, err)

local st, msg = load('return ' .. s, '')

if err ~= '<eof>' then err = err .. "'" end

assert(not st and string.find(msg, "near .-" .. err))

end

lexerror([["abc\x"]], [[\x"]])

lexerror([["abc\x]], [[\x]])

lexerror([["\x]], [[\x]])

lexerror([["\x5"]], [[\x5"]])

lexerror([["\x5]], [[\x5]])

lexerror([["\xr"]], [[\xr]])

lexerror([["\xr]], [[\xr]])

lexerror([["\x.]], [[\x.]])

lexerror([["\x8%"]], [[\x8%%]])

lexerror([["\xAG]], [[\xAG]])

lexerror([["\g"]], [[\g]])

lexerror([["\g]], [[\g]])

lexerror([["\."]], [[\%.]])

lexerror([["\999"]], [[\999"]])

lexerror([["xyz\300"]], [[\300"]])

lexerror([[" \256"]], [[\256"]])

-- errors in UTF-8 sequences

lexerror([["abc\u{100000000}"]], [[abc\u{100000000]]) -- too large

lexerror([["abc\u11r"]], [[abc\u1]]) -- missing '{'

lexerror([["abc\u"]], [[abc\u"]]) -- missing '{'

lexerror([["abc\u{11r"]], [[abc\u{11r]]) -- missing '}'

lexerror([["abc\u{11"]], [[abc\u{11"]]) -- missing '}'

lexerror([["abc\u{11]], [[abc\u{11]]) -- missing '}'

lexerror([["abc\u{r"]], [[abc\u{r]]) -- no digits

-- unfinished strings

lexerror("[=[alo]]", "<eof>")

lexerror("[=[alo]=", "<eof>")

lexerror("[=[alo]", "<eof>")

lexerror("'alo", "<eof>")

lexerror("'alo \\z \n\n", "<eof>")

lexerror("'alo \\z", "<eof>")

lexerror([['alo \98]], "<eof>")

-- valid characters in variable names

for i = 0, 255 do

local s = string.char(i)

assert(not string.find(s, "[a-zA-Z_]") == not load(s .. "=1", ""))

assert(not string.find(s, "[a-zA-Z_0-9]") ==

not load("a" .. s .. "1 = 1", ""))

end

-- long variable names

local var1 = string.rep('a', 15000) .. '1'

local var2 = string.rep('a', 15000) .. '2'

local prog = string.format([[

%s = 5

%s = %s + 1

return function () return %s - %s end

]], var1, var2, var1, var1, var2)

local f = dostring(prog)

assert(_G[var1] == 5 and _G[var2] == 6 and f() == -1)

_G[var1], _G[var2] = nil

print('+')

-- escapes --

assert("\n\t" == [[

]])

assert([[

$debug]] == "\n $debug")

assert([[ [ ]] ~= [[ ] ]])

-- long strings --

local b = "001234567890123456789012345678901234567891234567890123456789012345678901234567890012345678901234567890123456789012345678912345678901234567890123456789012345678900123456789012345678901234567890123456789123456789012345678901234567890123456789001234567890123456789012345678901234567891234567890123456789012345678901234567890012345678901234567890123456789012345678912345678901234567890123456789012345678900123456789012345678901234567890123456789123456789012345678901234567890123456789001234567890123456789012345678901234567891234567890123456789012345678901234567890012345678901234567890123456789012345678912345678901234567890123456789012345678900123456789012345678901234567890123456789123456789012345678901234567890123456789001234567890123456789012345678901234567891234567890123456789012345678901234567890012345678901234567890123456789012345678912345678901234567890123456789012345678900123456789012345678901234567890123456789123456789012345678901234567890123456789"

assert(string.len(b) == 960)

prog = [=[

print('+')

local a1 = [["this is a 'string' with several 'quotes'"]]

local a2 = "'quotes'"

assert(string.find(a1, a2) == 34)

print('+')

a1 = [==[temp = [[an arbitrary value]]; ]==]

assert(load(a1))()

assert(temp == 'an arbitrary value')

_G.temp = nil

-- long strings --

assert(string.len(b) == 960)

print('+')

local a = [[00123456789012345678901234567890123456789123456789012345678901234567890123456789

00123456789012345678901234567890123456789123456789012345678901234567890123456789

]]

assert(string.len(a) == 1863)

assert(string.sub(a, 1, 40) == string.sub(b, 1, 40))

x = 1

]=]

print('+')

_G.x = nil

dostring(prog)

assert(x)

_G.x = nil

do -- reuse of long strings

-- get the address of a string

local function getadd (s) return string.format("%p", s) end

local s1 <const> = "01234567890123456789012345678901234567890123456789"

local s2 <const> = "01234567890123456789012345678901234567890123456789"

local s3 = "01234567890123456789012345678901234567890123456789"

local function foo() return s1 end

local function foo1() return s3 end

local function foo2()

return "01234567890123456789012345678901234567890123456789"

end

local a1 = getadd(s1)

assert(a1 == getadd(s2))

assert(a1 == getadd(foo()))

assert(a1 == getadd(foo1()))

assert(a1 == getadd(foo2()))

local sd = "0123456789" .. "0123456789012345678901234567890123456789"

assert(sd == s1 and getadd(sd) ~= a1)

end

-- testing line ends

prog = [[

local a = 1 -- a comment

local b = 2

x = [=[

]=]

y = "\

hello\r\n\

return require"debug".getinfo(1).currentline

]]

for _, n in pairs{"\n", "\r", "\n\r", "\r\n"} do

local prog, nn = string.gsub(prog, "\n", n)

assert(dostring(prog) == nn)

assert(_G.x == "hi\n" and _G.y == "\nhello\r\n\n")

end

_G.x, _G.y = nil

-- testing comments and strings with long brackets

local a = [==[]=]==]

assert(a == "]=")

a = [==[[===[[=[]]=][====[]]===]===]==]

assert(a == "[===[[=[]]=][====[]]===]===")

a = [====[[===[[=[]]=][====[]]===]===]====]

assert(a == "[===[[=[]]=][====[]]===]===")

a = [=[]]]]]]]]]=]

assert(a == "]]]]]]]]")

--[===[

x y z [==[ blu foo

]==

]

]=]==]

error error]=]===]

-- generate all strings of four of these chars

local x = {"=", "[", "]", "\n"}

local len = 4

local function gen (c, n)

if n==0 then coroutine.yield(c)

else

for _, a in pairs(x) do

gen(c..a, n-1)

end

for s in coroutine.wrap(function () gen("", len) end) do

assert(s == load("return [====[\n"..s.."]====]", "")())

end

-- testing decimal point locale

if os.setlocale("pt_BR") or os.setlocale("ptb") then

assert(tonumber("3,4") == 3.4 and tonumber"3.4" == 3.4)

assert(tonumber(" -.4 ") == -0.4)

assert(tonumber(" +0x.41 ") == 0X0.41)

assert(not load("a = (3,4)"))

assert(assert(load("return 3.4"))() == 3.4)

assert(assert(load("return .4,3"))() == .4)

assert(assert(load("return 4."))() == 4.)

assert(assert(load("return 4.+.5"))() == 4.5)

assert(" 0x.1 " + " 0x,1" + "-0X.1\t" == 0x0.1)

assert(not tonumber"inf" and not tonumber"NAN")

assert(assert(load(string.format("return %q", 4.51)))() == 4.51)

local a,b = load("return 4.5.")

assert(string.find(b, "'4%.5%.'"))

assert(os.setlocale("C"))

else

(Message or print)(

'\n >>> pt_BR locale not available: skipping decimal point tests <<<\n')

end

-- testing %q x line ends

local s = "a string with \r and \n and \r\n and \n\r"

local c = string.format("return %q", s)

assert(assert(load(c))() == s)

-- testing errors

assert(not load"a = 'non-ending string")

assert(not load"a = 'non-ending string\n'")

assert(not load"a = '\\345'")

assert(not load"a = [=x]")

local function malformednum (n, exp)

local s, msg = load("return " .. n)

assert(not s and string.find(msg, exp))

end

malformednum("0xe-", "near <eof>")

malformednum("0xep-p", "malformed number")

malformednum("1print()", "malformed number")

print('OK')

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