summaryrefslogtreecommitdiff
path: root/test/test-suite/vararg.test.js
blob: 053854110912c5c8c7ba0e2d61ce46b18df65e56 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
"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);
});