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5205 | clevermous | 1 | /* |
2 | ** $Id: lauxlib.h,v 1.120 2011/11/29 15:55:08 roberto Exp $ |
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3 | ** Auxiliary functions for building Lua libraries |
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4 | ** See Copyright Notice in lua.h |
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5 | */ |
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6 | |||
7 | |||
8 | #ifndef lauxlib_h |
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9 | #define lauxlib_h |
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10 | |||
11 | |||
12 | #include |
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13 | #include |
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14 | |||
15 | #include "lua.h" |
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16 | |||
17 | |||
18 | |||
19 | /* extra error code for `luaL_load' */ |
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20 | #define LUA_ERRFILE (LUA_ERRERR+1) |
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21 | |||
22 | |||
23 | typedef struct luaL_Reg { |
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24 | const char *name; |
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25 | lua_CFunction func; |
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26 | } luaL_Reg; |
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27 | |||
28 | |||
29 | LUALIB_API void (luaL_checkversion_) (lua_State *L, lua_Number ver); |
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30 | #define luaL_checkversion(L) luaL_checkversion_(L, LUA_VERSION_NUM) |
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31 | |||
32 | LUALIB_API int (luaL_getmetafield) (lua_State *L, int obj, const char *e); |
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33 | LUALIB_API int (luaL_callmeta) (lua_State *L, int obj, const char *e); |
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34 | LUALIB_API const char *(luaL_tolstring) (lua_State *L, int idx, size_t *len); |
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35 | LUALIB_API int (luaL_argerror) (lua_State *L, int numarg, const char *extramsg); |
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36 | LUALIB_API const char *(luaL_checklstring) (lua_State *L, int numArg, |
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37 | size_t *l); |
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38 | LUALIB_API const char *(luaL_optlstring) (lua_State *L, int numArg, |
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39 | const char *def, size_t *l); |
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40 | LUALIB_API lua_Number (luaL_checknumber) (lua_State *L, int numArg); |
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41 | LUALIB_API lua_Number (luaL_optnumber) (lua_State *L, int nArg, lua_Number def); |
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42 | |||
43 | LUALIB_API lua_Integer (luaL_checkinteger) (lua_State *L, int numArg); |
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44 | LUALIB_API lua_Integer (luaL_optinteger) (lua_State *L, int nArg, |
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45 | lua_Integer def); |
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46 | LUALIB_API lua_Unsigned (luaL_checkunsigned) (lua_State *L, int numArg); |
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47 | LUALIB_API lua_Unsigned (luaL_optunsigned) (lua_State *L, int numArg, |
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48 | lua_Unsigned def); |
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49 | |||
50 | LUALIB_API void (luaL_checkstack) (lua_State *L, int sz, const char *msg); |
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51 | LUALIB_API void (luaL_checktype) (lua_State *L, int narg, int t); |
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52 | LUALIB_API void (luaL_checkany) (lua_State *L, int narg); |
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53 | |||
54 | LUALIB_API int (luaL_newmetatable) (lua_State *L, const char *tname); |
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55 | LUALIB_API void (luaL_setmetatable) (lua_State *L, const char *tname); |
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56 | LUALIB_API void *(luaL_testudata) (lua_State *L, int ud, const char *tname); |
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57 | LUALIB_API void *(luaL_checkudata) (lua_State *L, int ud, const char *tname); |
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58 | |||
59 | LUALIB_API void (luaL_where) (lua_State *L, int lvl); |
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60 | LUALIB_API int (luaL_error) (lua_State *L, const char *fmt, ...); |
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61 | |||
62 | LUALIB_API int (luaL_checkoption) (lua_State *L, int narg, const char *def, |
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63 | const char *const lst[]); |
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64 | |||
65 | LUALIB_API int (luaL_fileresult) (lua_State *L, int stat, const char *fname); |
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66 | LUALIB_API int (luaL_execresult) (lua_State *L, int stat); |
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67 | |||
68 | /* pre-defined references */ |
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69 | #define LUA_NOREF (-2) |
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70 | #define LUA_REFNIL (-1) |
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71 | |||
72 | LUALIB_API int (luaL_ref) (lua_State *L, int t); |
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73 | LUALIB_API void (luaL_unref) (lua_State *L, int t, int ref); |
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74 | |||
75 | LUALIB_API int (luaL_loadfilex) (lua_State *L, const char *filename, |
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76 | const char *mode); |
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77 | |||
78 | #define luaL_loadfile(L,f) luaL_loadfilex(L,f,NULL) |
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79 | |||
80 | LUALIB_API int (luaL_loadbufferx) (lua_State *L, const char *buff, size_t sz, |
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81 | const char *name, const char *mode); |
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82 | LUALIB_API int (luaL_loadstring) (lua_State *L, const char *s); |
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83 | |||
84 | LUALIB_API lua_State *(luaL_newstate) (void); |
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85 | |||
86 | LUALIB_API int (luaL_len) (lua_State *L, int idx); |
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87 | |||
88 | LUALIB_API const char *(luaL_gsub) (lua_State *L, const char *s, const char *p, |
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89 | const char *r); |
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90 | |||
91 | LUALIB_API void (luaL_setfuncs) (lua_State *L, const luaL_Reg *l, int nup); |
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92 | |||
93 | LUALIB_API int (luaL_getsubtable) (lua_State *L, int idx, const char *fname); |
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94 | |||
95 | LUALIB_API void (luaL_traceback) (lua_State *L, lua_State *L1, |
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96 | const char *msg, int level); |
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97 | |||
98 | LUALIB_API void (luaL_requiref) (lua_State *L, const char *modname, |
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99 | lua_CFunction openf, int glb); |
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100 | |||
101 | /* |
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102 | ** =============================================================== |
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103 | ** some useful macros |
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104 | ** =============================================================== |
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105 | */ |
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106 | |||
107 | |||
108 | #define luaL_newlibtable(L,l) \ |
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109 | lua_createtable(L, 0, sizeof(l)/sizeof((l)[0]) - 1) |
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110 | |||
111 | #define luaL_newlib(L,l) (luaL_newlibtable(L,l), luaL_setfuncs(L,l,0)) |
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112 | |||
113 | #define luaL_argcheck(L, cond,numarg,extramsg) \ |
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114 | ((void)((cond) || luaL_argerror(L, (numarg), (extramsg)))) |
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115 | #define luaL_checkstring(L,n) (luaL_checklstring(L, (n), NULL)) |
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116 | #define luaL_optstring(L,n,d) (luaL_optlstring(L, (n), (d), NULL)) |
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117 | #define luaL_checkint(L,n) ((int)luaL_checkinteger(L, (n))) |
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118 | #define luaL_optint(L,n,d) ((int)luaL_optinteger(L, (n), (d))) |
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119 | #define luaL_checklong(L,n) ((long)luaL_checkinteger(L, (n))) |
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120 | #define luaL_optlong(L,n,d) ((long)luaL_optinteger(L, (n), (d))) |
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121 | |||
122 | #define luaL_typename(L,i) lua_typename(L, lua_type(L,(i))) |
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123 | |||
124 | #define luaL_dofile(L, fn) \ |
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125 | (luaL_loadfile(L, fn) || lua_pcall(L, 0, LUA_MULTRET, 0)) |
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126 | |||
127 | #define luaL_dostring(L, s) \ |
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128 | (luaL_loadstring(L, s) || lua_pcall(L, 0, LUA_MULTRET, 0)) |
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129 | |||
130 | #define luaL_getmetatable(L,n) (lua_getfield(L, LUA_REGISTRYINDEX, (n))) |
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131 | |||
132 | #define luaL_opt(L,f,n,d) (lua_isnoneornil(L,(n)) ? (d) : f(L,(n))) |
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133 | |||
134 | #define luaL_loadbuffer(L,s,sz,n) luaL_loadbufferx(L,s,sz,n,NULL) |
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135 | |||
136 | |||
137 | /* |
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138 | ** {====================================================== |
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139 | ** Generic Buffer manipulation |
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140 | ** ======================================================= |
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141 | */ |
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142 | |||
143 | typedef struct luaL_Buffer { |
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144 | char *b; /* buffer address */ |
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145 | size_t size; /* buffer size */ |
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146 | size_t n; /* number of characters in buffer */ |
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147 | lua_State *L; |
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148 | char initb[LUAL_BUFFERSIZE]; /* initial buffer */ |
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149 | } luaL_Buffer; |
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150 | |||
151 | |||
152 | #define luaL_addchar(B,c) \ |
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153 | ((void)((B)->n < (B)->size || luaL_prepbuffsize((B), 1)), \ |
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154 | ((B)->b[(B)->n++] = (c))) |
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155 | |||
156 | #define luaL_addsize(B,s) ((B)->n += (s)) |
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157 | |||
158 | LUALIB_API void (luaL_buffinit) (lua_State *L, luaL_Buffer *B); |
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159 | LUALIB_API char *(luaL_prepbuffsize) (luaL_Buffer *B, size_t sz); |
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160 | LUALIB_API void (luaL_addlstring) (luaL_Buffer *B, const char *s, size_t l); |
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161 | LUALIB_API void (luaL_addstring) (luaL_Buffer *B, const char *s); |
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162 | LUALIB_API void (luaL_addvalue) (luaL_Buffer *B); |
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163 | LUALIB_API void (luaL_pushresult) (luaL_Buffer *B); |
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164 | LUALIB_API void (luaL_pushresultsize) (luaL_Buffer *B, size_t sz); |
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165 | LUALIB_API char *(luaL_buffinitsize) (lua_State *L, luaL_Buffer *B, size_t sz); |
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166 | |||
167 | #define luaL_prepbuffer(B) luaL_prepbuffsize(B, LUAL_BUFFERSIZE) |
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168 | |||
169 | /* }====================================================== */ |
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170 | |||
171 | |||
172 | |||
173 | /* |
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174 | ** {====================================================== |
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175 | ** File handles for IO library |
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176 | ** ======================================================= |
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177 | */ |
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178 | |||
179 | /* |
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180 | ** A file handle is a userdata with metatable 'LUA_FILEHANDLE' and |
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181 | ** initial structure 'luaL_Stream' (it may contain other fields |
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182 | ** after that initial structure). |
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183 | */ |
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184 | |||
185 | #define LUA_FILEHANDLE "FILE*" |
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186 | |||
187 | |||
188 | typedef struct luaL_Stream { |
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189 | FILE *f; /* stream (NULL for incompletely created streams) */ |
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190 | lua_CFunction closef; /* to close stream (NULL for closed streams) */ |
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191 | } luaL_Stream; |
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192 | |||
193 | /* }====================================================== */ |
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194 | |||
195 | |||
196 | |||
197 | /* compatibility with old module system */ |
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198 | #if defined(LUA_COMPAT_MODULE) |
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199 | |||
200 | LUALIB_API void (luaL_pushmodule) (lua_State *L, const char *modname, |
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201 | int sizehint); |
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202 | LUALIB_API void (luaL_openlib) (lua_State *L, const char *libname, |
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203 | const luaL_Reg *l, int nup); |
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204 | |||
205 | #define luaL_register(L,n,l) (luaL_openlib(L,(n),(l),0)) |
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206 | |||
207 | #endif |
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208 | |||
209 | |||
210 | #endif> |
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211 |