sammyette/Hilbish
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fix: dont allow overrides on hilbish table

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This commit is contained in:
TorchedSammy 2022-04-21 20:39:38 -04:00
parent 37e1b12b81
commit 3d525aa7da
Signed by: sammyette
GPG Key ID: 904FC49417B44DCD
1 changed files with 24 additions and 1 deletions
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25
api.go
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@ -52,7 +52,30 @@ var hilbishLoader = packagelib.Loader{
}
func hilbishLoad(rtm *rt.Runtime) (rt.Value, func()) {
fakeMod := rt.NewTable()
modmt := rt.NewTable()
mod := rt.NewTable()
modIndex := func(t *rt.Thread, c *rt.GoCont) (rt.Cont, error) {
arg := c.Arg(1)
val := mod.Get(arg)
return c.PushingNext1(t.Runtime, val), nil
}
modNewIndex := func(t *rt.Thread, c *rt.GoCont) (rt.Cont, error) {
k := c.Arg(1)
v := c.Arg(2)
if modVal := mod.Get(k); modVal != rt.NilValue {
return nil, errors.New("not allowed to override in hilbish table")
}
mod.Set(k, v)
return c.Next(), nil
}
modmt.Set(rt.StringValue("__newindex"), rt.FunctionValue(rt.NewGoFunction(modNewIndex, "__newindex", 3, false)))
modmt.Set(rt.StringValue("__index"), rt.FunctionValue(rt.NewGoFunction(modIndex, "__index", 2, false)))
fakeMod.SetMetatable(modmt)
util.SetExports(rtm, mod, exports)
hshMod = mod
@ -141,7 +164,7 @@ Check out the {blue}{bold}guide{reset} command to get started.
util.Document(timerModule, "Timer interface, for control of all intervals and timeouts.")
mod.Set(rt.StringValue("timers"), rt.TableValue(timerModule))
return rt.TableValue(mod), nil
return rt.TableValue(fakeMod), nil
}
func getenv(key, fallback string) string {