src/lua/core.cpp

   1 #include "core/command.hpp"
   2 #include "lua/internal.hpp"
   3 #include "core/framerate.hpp"
   4 #include "core/moviefile.hpp"
   5 #include "core/moviedata.hpp"
   6 #include "core/window.hpp"
   7 #include "interface/romtype.hpp"
   8 #include "library/string.hpp"
   9 #include <sstream>
  10
  11 namespace
  12 {
  13         std::string luavalue_to_string(lua_state& L, int index, std::set<const void*>& printed, bool quote)
  14         {
  15                 switch(L.type(index)) {
  16                 case LUA_TNONE:
  17                         return "none";
  18                 case LUA_TNIL:
  19                         return "nil";
  20                 case LUA_TBOOLEAN:
  21                         return L.toboolean(index) ? "true" : "false";
  22                 case LUA_TNUMBER:
  23                         return (stringfmt() << L.tonumber(index)).str();
  24                 case LUA_TSTRING: {
  25                         const char* tmp2;
  26                         size_t len;
  27                         tmp2 = L.tolstring(index, &len);
  28                         if(quote)
  29                                 return "\"" + std::string(tmp2, tmp2 + len) + "\"";
  30                         else
  31                                 return std::string(tmp2, tmp2 + len);
  32                 }
  33                 case LUA_TLIGHTUSERDATA:
  34                         return (stringfmt() << "Lightuserdata:" << L.touserdata(index)).str();
  35                 case LUA_TFUNCTION:
  36                         return (stringfmt() << "Function:" << L.topointer(index)).str();
  37                 case LUA_TTHREAD:
  38                         return (stringfmt() << "Thread:" << L.topointer(index)).str();
  39                         break;
  40                 case LUA_TUSERDATA:
  41                         return (stringfmt() << "Userdata<" << try_recognize_userdata(L, index) << "@"
  42                                 << L.touserdata(index) << ">:[" << try_print_userdata(L, index) << "]").str();
  43                 case LUA_TTABLE: {
  44                         //Fun with recursion.
  45                         const void* ptr = L.topointer(index);
  46                         if(printed.count(ptr))
  47                                 return (stringfmt() << "<table:" << ptr << ">").str();
  48                         printed.insert(ptr);
  49                         std::ostringstream s;
  50                         s << "<" << ptr << ">{";
  51                         L.pushnil();
  52                         bool first = true;
  53                         while(L.next(index)) {
  54                                 if(!first)
  55                                         s << ", ";
  56                                 int stacktop = L.gettop();
  57                                 s << "[" << luavalue_to_string(L, stacktop - 1, printed, true) << "]="
  58                                         << luavalue_to_string(L, stacktop, printed, true);
  59                                 first = false;
  60                                 L.pop(1);
  61                         }
  62                         s << "}";
  63                         return s.str();
  64                 }
  65                 default:
  66                         return (stringfmt() << "???:" << L.topointer(index)).str();
  67                 }
  68         }
  69
  70         function_ptr_luafun lua_tostringx(lua_func_misc, "tostringx", [](lua_state& L, const std::string& fname) ->
  71                 int {
  72                 std::set<const void*> tmp2;
  73                 std::string y = luavalue_to_string(L, 1, tmp2, false);
  74                 L.pushlstring(y.c_str(), y.length());
  75                 return 1;
  76         });
  77
  78         function_ptr_luafun lua_print(lua_func_misc, "print2", [](lua_state& L, const std::string& fname) -> int {
  79                 int stacksize = 0;
  80                 while(!L.isnone(stacksize + 1))
  81                 stacksize++;
  82                 std::string toprint;
  83                 bool first = true;
  84                 for(int i = 0; i < stacksize; i++) {
  85                         std::set<const void*> tmp2;
  86                         std::string tmp = luavalue_to_string(L, i + 1, tmp2, false);
  87                         if(first)
  88                                 toprint = tmp;
  89                         else
  90                                 toprint = toprint + "\t" + tmp;
  91                         first = false;
  92                 }
  93                 platform::message(toprint);
  94                 return 0;
  95         });
  96
  97         function_ptr_luafun lua_exec(lua_func_misc, "exec", [](lua_state& L, const std::string& fname) -> int {
  98                 std::string text = L.get_string(1, fname.c_str());
  99                 lsnes_cmd.invoke(text);
 100                 return 0;
 101         });
 102
 103         function_ptr_luafun lua_booted(lua_func_misc, "emulator_ready", [](lua_state& L, const std::string& fname)
 104                 -> int {
 105                 L.pushboolean(lua_booted_flag ? 1 : 0);
 106                 return 1;
 107         });
 108
 109         function_ptr_luafun lua_utime(lua_func_misc, "utime", [](lua_state& L, const std::string& fname) -> int {
 110                 uint64_t t = get_utime();
 111                 L.pushnumber(t / 1000000);
 112                 L.pushnumber(t % 1000000);
 113                 return 2;
 114         });
 115
 116         function_ptr_luafun lua_idle_time(lua_func_misc, "set_idle_timeout", [](lua_state& L,
 117                 const std::string& fname) -> int {
 118                 lua_idle_hook_time = get_utime() + L.get_numeric_argument<uint64_t>(1, fname.c_str());
 119                 return 0;
 120         });
 121
 122         function_ptr_luafun lua_timer_time(lua_func_misc, "set_timer_timeout", [](lua_state& L,
 123                 const std::string& fname) -> int {
 124                 lua_timer_hook_time = get_utime() + L.get_numeric_argument<uint64_t>(1, fname.c_str());
 125                 return 0;
 126         });
 127
 128         function_ptr_luafun lua_busaddr(lua_func_misc, "bus_address", [](lua_state& L, const std::string& fname)
 129                 -> int {
 130                 uint64_t addr = L.get_numeric_argument<uint64_t>(1, fname.c_str());
 131                 auto busrange = our_rom.rtype->get_bus_map();
 132                 if(!busrange.second)
 133                         throw std::runtime_error("This platform does not have bus mapping");
 134                 L.pushnumber(busrange.first + (addr % busrange.second));
 135                 return 1;
 136         });
 137
 138         function_ptr_luafun mgetlagflag(lua_func_misc, "memory.get_lag_flag", [](lua_state& L,
 139                 const std::string& fname) -> int {
 140                 L.pushboolean(!(our_rom.rtype && our_rom.rtype->get_pflag()));
 141                 return 1;
 142         });
 143
 144         function_ptr_luafun msetlagflag(lua_func_misc, "memory.set_lag_flag", [](lua_state& L,
 145                 const std::string& fname) -> int {
 146                 if(our_rom.rtype)
 147                         our_rom.rtype->set_pflag(!L.get_bool(1, fname.c_str()));
 148                 return 0;
 149         });
 150 }