Function push_iface_function

src/LuaExtension.cpp:476–492

}

static int push_iface_function(lua_State *L, const char *name, IFaceTableInterface *iface) {
    auto func = iface->FindFunction(name);
    if (func != nullptr) {
        if (IFaceFunctionIsScriptable(*func)) {
            lua_pushlightuserdata(L, (void*)func);
            lua_pushcclosure(L, cf_pane_iface_function, 1);

            // Since Lua experts say it is inefficient to create closures / cfunctions
            // in an inner loop, I tried caching the closures in the metatable, and looking
            // for them there first.  However, it made very little difference and did not
            // seem worth the added complexity. - WBD

            return 1;
        }
    }
    return -1; // signal to try next pane index handler
}

static int push_iface_propval(lua_State *L, const char *name, IFaceTableInterface *iface) {
    // this function doesn't raise errors, but returns 0 if the function is not handled.