src/lua/actions.cpp

   1 #include "lua/internal.hpp"
   2 #include "interface/romtype.hpp"
   3 #include "core/instance.hpp"
   4 #include "core/moviedata.hpp"
   5 #include "core/messages.hpp"
   6 #include "core/rom.hpp"
   7
   8 namespace
   9 {
  10         int action(lua::state& L, lua::parameters& P)
  11         {
  12                 auto& core = CORE();
  13                 std::string name;
  14
  15                 P(name);
  16
  17                 const interface_action* act = NULL;
  18                 for(auto i : core.rom->get_actions())
  19                         if(i->get_symbol() == name) {
  20                                 act = i;
  21                                 break;
  22                         }
  23                 if(!act)
  24                         throw std::runtime_error("No such action");
  25                 if(!(core.rom->action_flags(act->id) & 1))
  26                         throw std::runtime_error("Action not enabled.");
  27                 std::vector<interface_action_paramval> params;
  28                 for(auto i : act->params) {
  29                         regex_results r;
  30                         interface_action_paramval pv;
  31                         if(r = regex("string(:(.*))?", i.model)) {
  32                                 P(pv.s);
  33                                 bool bad = false;;
  34                                 try {
  35                                         if(r[2] != "" && !regex_match(r[2], pv.s))
  36                                                 bad = true;
  37                                 } catch(...) {
  38                                         messages << "Internal error: Bad constraint in '" << i.model << "'."
  39                                                 << std::endl;
  40                                         throw std::runtime_error("Internal error");
  41                                 }
  42                                 if(bad)
  43                                         throw std::runtime_error("String does not satisfy constraints.");
  44                         } else if(r = regex("int:([0-9]+),([0-9]+)", i.model)) {
  45                                 int64_t low, high;
  46                                 try {
  47                                         low = parse_value<int64_t>(r[1]);
  48                                         high = parse_value<int64_t>(r[2]);
  49                                 } catch(...) {
  50                                         messages << "Internal error: Unknown limits in '" << i.model << "'."
  51                                                 << std::endl;
  52                                         throw std::runtime_error("Internal error");
  53                                 }
  54                                 P(pv.i);
  55                                 if(pv.i < low || pv.i > high) {
  56                                         throw std::runtime_error("Parameter out of limits.");
  57                                 }
  58                         } else if(r = regex("enum:(.*)", i.model)) {
  59                                 std::string p;
  60                                 P(p);
  61                                 unsigned num = 0;
  62                                 try {
  63                                         JSON::node e(r[1]);
  64                                         for(auto i2 : e) {
  65                                                 std::string n;
  66                                                 if(i2.type() == JSON::string)
  67                                                         n = i2.as_string8();
  68                                                 else if(i2.type() == JSON::array)
  69                                                         n = i2.index(0).as_string8();
  70                                                 else
  71                                                         throw std::runtime_error("Choice not array nor "
  72                                                                 "string");
  73                                                 if(n == p)
  74                                                         goto out;
  75                                                 num++;
  76                                         }
  77                                 } catch(std::exception& e) {
  78                                         messages << "JSON parse error parsing " << "model: "
  79                                                 << e.what() << std::endl;
  80                                         throw std::runtime_error("Internal error");
  81                                 }
  82                                 throw std::runtime_error("Invalid choice for enumeration.");
  83 out:
  84                                 pv.i = num;
  85                         } else if(regex_match("bool", i.model)) {
  86                                 P(pv.b);
  87                         } else if(regex_match("toggle", i.model)) {
  88                         } else {
  89                                 messages << "Internal error: Unknown parameter model '" << i.model << "'."
  90                                         << std::endl;
  91                                 throw std::runtime_error("Internal error");
  92                         }
  93                         params.push_back(pv);
  94                 }
  95                 if(P.more())
  96                         throw std::runtime_error("Excess arguments for action");
  97                 core.rom->execute_action(act->id, params);
  98                 return 0;
  99         }
 100
 101         int action_flags(lua::state& L, lua::parameters& P)
 102         {
 103                 auto& core = CORE();
 104                 std::string name;
 105
 106                 P(name);
 107
 108                 const interface_action* act = NULL;
 109                 for(auto i : core.rom->get_actions())
 110                         if(i->get_symbol() == name) {
 111                                 act = i;
 112                                 break;
 113                         }
 114                 if(!act)
 115                         throw std::runtime_error("No such action");
 116                 L.pushnumber(core.rom->action_flags(act->id));
 117                 return 1;
 118         }
 119
 120         lua::functions LUA_actions_fns(lua_func_misc, "memory", {
 121                 {"action", action},
 122                 {"action_flags", action_flags},
 123         });
 124 }