Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/contrib/openzfs/include/sys/lua/lauxlib.h
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1 /* 2 ** $Id: lauxlib.h,v 1.120.1.1 2013/04/12 18:48:47 roberto Exp $ 3 ** Auxiliary functions for building Lua libraries 4 ** See Copyright Notice in lua.h 5 */ 6 7 8 #ifndef lauxlib_h 9 #define lauxlib_h 10 11 12 #include <sys/lua/lua.h> 13 14 15 16 /* extra error code for `luaL_load' */ 17 #define LUA_ERRFILE (LUA_ERRERR+1) 18 19 20 typedef struct luaL_Reg { 21 const char *name; 22 lua_CFunction func; 23 } luaL_Reg; 24 25 26 LUALIB_API void (luaL_checkversion_) (lua_State *L, lua_Number ver); 27 #define luaL_checkversion(L) luaL_checkversion_(L, LUA_VERSION_NUM) 28 29 LUALIB_API int (luaL_getmetafield) (lua_State *L, int obj, const char *e); 30 LUALIB_API int (luaL_callmeta) (lua_State *L, int obj, const char *e); 31 LUALIB_API const char *(luaL_tolstring) (lua_State *L, int idx, size_t *len); 32 LUALIB_API int (luaL_argerror) (lua_State *L, int numarg, const char *extramsg); 33 LUALIB_API const char *(luaL_checklstring) (lua_State *L, int numArg, 34 size_t *l); 35 LUALIB_API const char *(luaL_optlstring) (lua_State *L, int numArg, 36 const char *def, size_t *l); 37 LUALIB_API lua_Number (luaL_checknumber) (lua_State *L, int numArg); 38 LUALIB_API lua_Number (luaL_optnumber) (lua_State *L, int nArg, lua_Number def); 39 40 LUALIB_API lua_Integer (luaL_checkinteger) (lua_State *L, int numArg); 41 LUALIB_API lua_Integer (luaL_optinteger) (lua_State *L, int nArg, 42 lua_Integer def); 43 LUALIB_API lua_Unsigned (luaL_checkunsigned) (lua_State *L, int numArg); 44 LUALIB_API lua_Unsigned (luaL_optunsigned) (lua_State *L, int numArg, 45 lua_Unsigned def); 46 47 LUALIB_API void (luaL_checkstack) (lua_State *L, int sz, const char *msg); 48 LUALIB_API void (luaL_checktype) (lua_State *L, int narg, int t); 49 LUALIB_API void (luaL_checkany) (lua_State *L, int narg); 50 51 LUALIB_API int (luaL_newmetatable) (lua_State *L, const char *tname); 52 LUALIB_API void (luaL_setmetatable) (lua_State *L, const char *tname); 53 LUALIB_API void *(luaL_testudata) (lua_State *L, int ud, const char *tname); 54 LUALIB_API void *(luaL_checkudata) (lua_State *L, int ud, const char *tname); 55 56 LUALIB_API void (luaL_where) (lua_State *L, int lvl); 57 LUALIB_API int (luaL_error) (lua_State *L, const char *fmt, ...); 58 59 LUALIB_API int (luaL_checkoption) (lua_State *L, int narg, const char *def, 60 const char *const lst[]); 61 62 /* pre-defined references */ 63 #define LUA_NOREF (-2) 64 #define LUA_REFNIL (-1) 65 66 LUALIB_API int (luaL_ref) (lua_State *L, int t); 67 LUALIB_API void (luaL_unref) (lua_State *L, int t, int ref); 68 69 LUALIB_API int (luaL_loadbufferx) (lua_State *L, const char *buff, size_t sz, 70 const char *name, const char *mode); 71 LUALIB_API int (luaL_loadstring) (lua_State *L, const char *s); 72 73 LUALIB_API int (luaL_len) (lua_State *L, int idx); 74 75 LUALIB_API const char *(luaL_gsub) (lua_State *L, const char *s, const char *p, 76 const char *r); 77 78 LUALIB_API void (luaL_setfuncs) (lua_State *L, const luaL_Reg *l, int nup); 79 80 LUALIB_API int (luaL_getsubtable) (lua_State *L, int idx, const char *fname); 81 82 LUALIB_API void (luaL_traceback) (lua_State *L, lua_State *L1, 83 const char *msg, int level); 84 85 LUALIB_API void (luaL_requiref) (lua_State *L, const char *modname, 86 lua_CFunction openf, int glb); 87 88 /* 89 ** =============================================================== 90 ** some useful macros 91 ** =============================================================== 92 */ 93 94 95 #define luaL_newlibtable(L,l) \ 96 lua_createtable(L, 0, sizeof(l)/sizeof((l)[0]) - 1) 97 98 #define luaL_newlib(L,l) (luaL_newlibtable(L,l), luaL_setfuncs(L,l,0)) 99 100 #define luaL_argcheck(L, cond,numarg,extramsg) \ 101 ((void)((cond) || luaL_argerror(L, (numarg), (extramsg)))) 102 #define luaL_checkstring(L,n) (luaL_checklstring(L, (n), NULL)) 103 #define luaL_optstring(L,n,d) (luaL_optlstring(L, (n), (d), NULL)) 104 #define luaL_checkint(L,n) ((int)luaL_checkinteger(L, (n))) 105 #define luaL_optint(L,n,d) ((int)luaL_optinteger(L, (n), (d))) 106 #define luaL_checklong(L,n) ((long)luaL_checkinteger(L, (n))) 107 #define luaL_optlong(L,n,d) ((long)luaL_optinteger(L, (n), (d))) 108 109 #define luaL_typename(L,i) lua_typename(L, lua_type(L,(i))) 110 111 #define luaL_dofile(L, fn) \ 112 (luaL_loadfile(L, fn) || lua_pcall(L, 0, LUA_MULTRET, 0)) 113 114 #define luaL_dostring(L, s) \ 115 (luaL_loadstring(L, s) || lua_pcall(L, 0, LUA_MULTRET, 0)) 116 117 #define luaL_getmetatable(L,n) (lua_getfield(L, LUA_REGISTRYINDEX, (n))) 118 119 #define luaL_opt(L,f,n,d) (lua_isnoneornil(L,(n)) ? (d) : f(L,(n))) 120 121 #define luaL_loadbuffer(L,s,sz,n) luaL_loadbufferx(L,s,sz,n,NULL) 122 123 124 /* 125 ** {====================================================== 126 ** Generic Buffer manipulation 127 ** ======================================================= 128 */ 129 130 typedef struct luaL_Buffer { 131 char *b; /* buffer address */ 132 size_t size; /* buffer size */ 133 size_t n; /* number of characters in buffer */ 134 lua_State *L; 135 char initb[LUAL_BUFFERSIZE]; /* initial buffer */ 136 } luaL_Buffer; 137 138 139 #define luaL_addchar(B,c) \ 140 ((void)((B)->n < (B)->size || luaL_prepbuffsize((B), 1)), \ 141 ((B)->b[(B)->n++] = (c))) 142 143 #define luaL_addsize(B,s) ((B)->n += (s)) 144 145 LUALIB_API void (luaL_buffinit) (lua_State *L, luaL_Buffer *B); 146 LUALIB_API char *(luaL_prepbuffsize) (luaL_Buffer *B, size_t sz); 147 LUALIB_API void (luaL_addlstring) (luaL_Buffer *B, const char *s, size_t l); 148 LUALIB_API void (luaL_addstring) (luaL_Buffer *B, const char *s); 149 LUALIB_API void (luaL_addvalue) (luaL_Buffer *B); 150 LUALIB_API void (luaL_pushresult) (luaL_Buffer *B); 151 LUALIB_API void (luaL_pushresultsize) (luaL_Buffer *B, size_t sz); 152 LUALIB_API char *(luaL_buffinitsize) (lua_State *L, luaL_Buffer *B, size_t sz); 153 154 #define luaL_prepbuffer(B) luaL_prepbuffsize(B, LUAL_BUFFERSIZE) 155 156 /* }====================================================== */ 157 158 159 /* compatibility with old module system */ 160 #if defined(LUA_COMPAT_MODULE) 161 162 LUALIB_API void (luaL_pushmodule) (lua_State *L, const char *modname, 163 int sizehint); 164 LUALIB_API void (luaL_openlib) (lua_State *L, const char *libname, 165 const luaL_Reg *l, int nup); 166 167 #define luaL_register(L,n,l) (luaL_openlib(L,(n),(l),0)) 168 169 #endif 170 171 172 #endif
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