Re: Harel statemachine for Lua 5.4
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- Subject: Re: Harel statemachine for Lua 5.4
- From: Sean Conner <sean@...>
- Date: 2022年8月25日 14:05:27 -0400
It was thus said that the Great caco once stated:
> I have problems getting package `hsm_statechart` working under Lua 5.4
> (which should support > Lua 5.1). After `luarocks install hsm_statechart`,
> when I load the package it says `luaL_register undefined` which tells me
> it's not updated for Lua 5.4... I've downloaded the source and tried to
> update it, but not successful so far. Anyone using hsm_statechart under
> Lua 5.4 (I'm aware of other statecharts but they are pure lua code and may
> be slower than the C-compiled hsm_statechart module).
If the code is expecting luaL_register(), then it hasn't even been updated
for Lua 5.2. I'm looking at the code, and ... it's not straightforward.
The line:
luaL_register( L, NULL, hula_member_fun );
can be replaced with (for Lua 5.2 or higher):
luaL_setfuncs(L,hula_member_fun,0);
but the other luaL_register() is problematic. The replacement function for
that is
luaL_newlib(L,hlua_class_fun);
but that no longer make a globel entry. Given that the name of the table is
passed in, leads me to belive that the code assumes a global table exists,
and so the line:
luaL_register( L, type, hula_class_fun );
may have to be replaced with:
luaL_newlib(L,hlua_class_fun);
lua_setglobal(L,type);
-spc