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"use strict";
const lua = require('../../src/lua.js');
const lauxlib = require('../../src/lauxlib.js');
const lualib = require('../../src/lualib.js');
const {to_luastring} = require("../../src/fengaricore.js");
test("[test-suite] vararg: testing vararg", () => {
let L = lauxlib.luaL_newstate();
if (!L) throw Error("failed to create lua state");
let luaCode = `
function f(a, ...)
local arg = {n = select('#', ...), ...}
for i=1,arg.n do assert(a[i]==arg[i]) end
return arg.n
end
function c12 (...)
assert(arg == _G.arg) -- no local 'arg'
local x = {...}; x.n = #x
local res = (x.n==2 and x[1] == 1 and x[2] == 2)
if res then res = 55 end
return res, 2
end
function vararg (...) return {n = select('#', ...), ...} end
local call = function (f, args) return f(table.unpack(args, 1, args.n)) end
assert(f() == 0)
assert(f({1,2,3}, 1, 2, 3) == 3)
assert(f({"alo", nil, 45, f, nil}, "alo", nil, 45, f, nil) == 5)
assert(c12(1,2)==55)
a,b = assert(call(c12, {1,2}))
assert(a == 55 and b == 2)
a = call(c12, {1,2;n=2})
assert(a == 55 and b == 2)
a = call(c12, {1,2;n=1})
assert(not a)
assert(c12(1,2,3) == false)
local a = vararg(call(next, {_G,nil;n=2}))
local b,c = next(_G)
assert(a[1] == b and a[2] == c and a.n == 2)
a = vararg(call(call, {c12, {1,2}}))
assert(a.n == 2 and a[1] == 55 and a[2] == 2)
a = call(function()end, {'+'})
assert(a == nil)
local t = {1, 10}
function t:f (...) local arg = {...}; return self[...]+#arg end
assert(t:f(1,4) == 3 and t:f(2) == 11)
lim = 20
local i, a = 1, {}
while i <= lim do a[i] = i+0.3; i=i+1 end
function f(a, b, c, d, ...)
local more = {...}
assert(a == 1.3 and more[1] == 5.3 and
more[lim-4] == lim+0.3 and not more[lim-3])
end
function g(a,b,c)
assert(a == 1.3 and b == 2.3 and c == 3.3)
end
call(f, a)
call(g, a)
a = {}
i = 1
while i <= lim do a[i] = i; i=i+1 end
assert(call(math.max, a) == lim)
`;
lualib.luaL_openlibs(L);
if (lauxlib.luaL_loadstring(L, to_luastring(luaCode)) === lua.LUA_ERRSYNTAX)
throw new SyntaxError(lua.lua_tojsstring(L, -1));
lua.lua_call(L, 0, 0);
});
test("[test-suite] vararg: new-style varargs", () => {
let L = lauxlib.luaL_newstate();
if (!L) throw Error("failed to create lua state");
let luaCode = `
function oneless (a, ...) return ... end
function f (n, a, ...)
local b
assert(arg == _G.arg) -- no local 'arg'
if n == 0 then
local b, c, d = ...
return a, b, c, d, oneless(oneless(oneless(...)))
else
n, b, a = n-1, ..., a
assert(b == ...)
return f(n, a, ...)
end
end
a,b,c,d,e = assert(f(10,5,4,3,2,1))
assert(a==5 and b==4 and c==3 and d==2 and e==1)
a,b,c,d,e = f(4)
assert(a==nil and b==nil and c==nil and d==nil and e==nil)
`;
lualib.luaL_openlibs(L);
if (lauxlib.luaL_loadstring(L, to_luastring(luaCode)) === lua.LUA_ERRSYNTAX)
throw new SyntaxError(lua.lua_tojsstring(L, -1));
lua.lua_call(L, 0, 0);
});
test("[test-suite] vararg: varargs for main chunks", () => {
let L = lauxlib.luaL_newstate();
if (!L) throw Error("failed to create lua state");
let luaCode = `
f = load[[ return {...} ]]
x = f(2,3)
assert(x[1] == 2 and x[2] == 3 and x[3] == nil)
f = load[[
local x = {...}
for i=1,select('#', ...) do assert(x[i] == select(i, ...)) end
assert(x[select('#', ...)+1] == nil)
return true
]]
assert(f("a", "b", nil, {}, assert))
assert(f())
a = {select(3, table.unpack{10,20,30,40})}
assert(#a == 2 and a[1] == 30 and a[2] == 40)
a = {select(1)}
assert(next(a) == nil)
a = {select(-1, 3, 5, 7)}
assert(a[1] == 7 and a[2] == nil)
a = {select(-2, 3, 5, 7)}
assert(a[1] == 5 and a[2] == 7 and a[3] == nil)
pcall(select, 10000)
pcall(select, -10000)
`;
lualib.luaL_openlibs(L);
if (lauxlib.luaL_loadstring(L, to_luastring(luaCode)) === lua.LUA_ERRSYNTAX)
throw new SyntaxError(lua.lua_tojsstring(L, -1));
lua.lua_call(L, 0, 0);
});
test("[test-suite] vararg: bug in 5.2.2", () => {
let L = lauxlib.luaL_newstate();
if (!L) throw Error("failed to create lua state");
let luaCode = `
function f(p1, p2, p3, p4, p5, p6, p7, p8, p9, p10,
p11, p12, p13, p14, p15, p16, p17, p18, p19, p20,
p21, p22, p23, p24, p25, p26, p27, p28, p29, p30,
p31, p32, p33, p34, p35, p36, p37, p38, p39, p40,
p41, p42, p43, p44, p45, p46, p48, p49, p50, ...)
local a1,a2,a3,a4,a5,a6,a7
local a8,a9,a10,a11,a12,a13,a14
end
-- assertion fail here
f()
`;
lualib.luaL_openlibs(L);
if (lauxlib.luaL_loadstring(L, to_luastring(luaCode)) === lua.LUA_ERRSYNTAX)
throw new SyntaxError(lua.lua_tojsstring(L, -1));
lua.lua_call(L, 0, 0);
});
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