---
source: src/main.rs
expression: compiled
input_file: test-data/lua5.2-tests/locals.lua
---
print('testing local variables and environments');
local debug = require("debug")
local fn f(x) {
    x = nil
    return x
}
assert(f(10) == nil);
local fn f() {
    local x
    return x
}
assert(f(10) == nil);
local fn f(x) {
    x = nil
    local y
    return x, y
}
assert(f(10) == nil && select(2, f(20)) == nil);
{
    local i = 10
    {
        local i = 100
        assert(i == 100);
    }
    {
        local i = 1000
        assert(i == 1000);
    }
    assert(i == 10);
    if i != 10 {
        local i = 20
    } else {
        local i = 30
        assert(i == 30);
    }
}
f = nil
local f
x = 1
a = nil
load('local a = {}')();
assert(a == nil);
global fn f(a) {
    local _1, _2, _3, _4, _5
    local _6, _7, _8, _9, _10
    local x = 3
    local b = a
    local c, d = a, b
    if (d == b) {
        local x = 'q'
        x = b
        assert(x == 2);
    } else {
        assert(nil);
    }
    assert(x == 3);
    local f = 10
}
local b = 10
local a
loop  {
    local b
    a, b = 1, 2
    assert(a + 1 == b);
} until a + b == 3
assert(x == 1);
f(2);
assert(type(f) == 'function');
local fn getenv(f) {
    local a, b = debug.getupvalue(f, 1)
    assert(a == '_ENV');
    return b
}
assert(getenv(load("a=3")) == _G);
local c = {}
local f = load("a = 3", nil, nil, c)
assert(getenv(f) == c);
assert(c.a == nil);
f();
assert(c.a == 3);
if !_soft {
    local a
    local p = 4
    for i = 2, 31 {
        for j = -3, 3 {
            assert(load(string.format(`local a=%s;
                                        a=a+%s;
                                        assert(a ==2^%s)`, j, p - j, i)))();
            assert(load(string.format(`local a=%s;
                                        a=a-%s;
                                        assert(a==-2^%s)`, -j, p - j, i)))();
            assert(load(string.format(`local a,b=0,%s;
                                        a=b-%s;
                                        assert(a==-2^%s)`, -j, p - j, i)))();
        }
        p = 2 * p
    }
}
print('+');
if rawget(_G, "querytab") {
    collectgarbage("stop");
    local a = {
        {} = 4, 
        3 = 0, 
        alo = 1, 
        a1234567890123456789012345678901234567890 = 10
    }
    local t = querytab(a)
    for k, _ with pairs(a) {
        a[(k)] = nil
    }
    collectgarbage();
    for i = 0, t - 1 {
        local k = querytab(a, i)
        assert(k == nil || type(k) == 'number' || k == 'alo');
    }
}
assert(_ENV == _G);
{
    local _ENV = (fn (...) {
        return ...
    })(_G, dummy)
    {
        local _ENV = {
            assert = assert
        }
        assert(true);
    }
    mt = {
        _G = _G
    }
    local foo, x
    {
        local _ENV = mt
        global fn foo(x) {
            A = x
            {
                local _ENV = _G
                A = 1000
            }
            return fn (x) {
                return A .. x
            }
        }
    }
    assert(getenv(foo) == mt);
    x = foo('hi')
    assert(mt.A == 'hi' && A == 1000);
    assert(x('*') == mt.A .. '*');
    {
        local _ENV = {
            assert = assert, 
            A = 10
        }
        {
            local _ENV = {
                assert = assert, 
                A = 20
            }
            assert(A == 20);
            x = A
        }
        assert(A == 10 && x == 20);
    }
    assert(x == 20);
    print('OK');
    return 5, f
}