diff options
Diffstat (limited to 'src/command_type.h')
| -rw-r--r-- | src/command_type.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/src/command_type.h b/src/command_type.h index fa381ce13..3a15087b9 100644 --- a/src/command_type.h +++ b/src/command_type.h @@ -424,11 +424,19 @@ enum CommandPauseLevel { typedef CommandCost CommandProc(DoCommandFlag flags, TileIndex tile, uint32 p1, uint32 p2, const std::string &text); +template <typename T> struct CommandFunctionTraitHelper; +template <typename... Targs> +struct CommandFunctionTraitHelper<CommandCost(*)(DoCommandFlag, Targs...)> { + using Args = std::tuple<std::decay_t<Targs>...>; +}; + /** Defines the traits of a command. */ template <Commands Tcmd> struct CommandTraits; #define DEF_CMD_TRAIT(cmd_, proc_, flags_, type_) \ template<> struct CommandTraits<cmd_> { \ + using Args = typename CommandFunctionTraitHelper<decltype(&proc_)>::Args; \ + static constexpr Commands cmd = cmd_; \ static constexpr auto &proc = proc_; \ static constexpr CommandFlags flags = (CommandFlags)(flags_); \ static constexpr CommandType type = type_; \ |