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Changes LUA seq_poll_start to take the input_item_class as a string (#5503)

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This seems to work around a problem that (at least for me) caused the
'sol::object seq' parameter to not properly handle a specified
sol::user<input_seq>.

This problem could be reproduced with the following command at the LUA
console:

	manager:machine():input():seq_poll_start("absolute",
		manager:machine():input():seq_from_tokens("KEYCODE_Q"))

I would feel more comfortable if I understood why the existing code
failed; it isn't clear to me if this is a bug in our sol handling for
input_item_class, a bug in sol itself, or a compiler bug, but this
change works for me and should definitely not introduce any problems.
This commit is contained in:
npwoods 2019-08-18 10:47:07 -04:00 committed by cracyc
parent d7dce40b4a
commit 47447da16b
1 changed files with 18 additions and 33 deletions
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41
src/frontend/mame/luaengine.cpp
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@ -145,33 +145,6 @@ namespace sol
}
};
template <>
struct checker<input_item_class>
{
template <typename Handler>
static bool check (lua_State* L, int index, Handler&& handler, record& tracking)
{
return stack::check<const std::string &>(L, index, handler);
}
};
template <>
struct getter<input_item_class>
{
static input_item_class get(lua_State* L, int index, record& tracking)
{
const std::string item_class = stack::get<const std::string &>(L, index);
if(item_class == "switch")
return ITEM_CLASS_SWITCH;
else if(item_class == "absolute" || item_class == "abs")
return ITEM_CLASS_ABSOLUTE;
else if(item_class == "relative" || item_class == "rel")
return ITEM_CLASS_RELATIVE;
else if(item_class == "maximum" || item_class == "max")
return ITEM_CLASS_MAXIMUM;
else
return ITEM_CLASS_INVALID;
}
};
template <>
struct pusher<sol::buffer *>
{
static int push(lua_State* L, sol::buffer *buff)
@ -2052,7 +2025,19 @@ void lua_engine::initialize()
"seq_pressed", [](input_manager &input, sol::user<input_seq> seq) { return input.seq_pressed(seq); },
"seq_to_tokens", [](input_manager &input, sol::user<input_seq> seq) { return input.seq_to_tokens(seq); },
"seq_name", [](input_manager &input, sol::user<input_seq> seq) { return input.seq_name(seq); },
"seq_poll_start", [](input_manager &input, input_item_class cls, sol::object seq) {
"seq_poll_start", [](input_manager &input, const char *cls_string, sol::object seq) {
input_item_class cls;
if (!strcmp(cls_string, "switch"))
cls = ITEM_CLASS_SWITCH;
else if (!strcmp(cls_string, "absolute") || !strcmp(cls_string, "abs"))
cls = ITEM_CLASS_ABSOLUTE;
else if (!strcmp(cls_string, "relative") || !strcmp(cls_string, "rel"))
cls = ITEM_CLASS_RELATIVE;
else if (!strcmp(cls_string, "maximum") || !strcmp(cls_string, "max"))
cls = ITEM_CLASS_MAXIMUM;
else
cls = ITEM_CLASS_INVALID;
input_seq *start = nullptr;
if(seq.is<sol::user<input_seq>>())
start = &seq.as<sol::user<input_seq>>();