2 ** Shared definitions for upb Lua modules.
10 #include "upb/handlers.h"
12 #include "upb/msgfactory.h"
14 /* Lua 5.1/5.2 compatibility code. */
15 #if LUA_VERSION_NUM == 501
17 #define lua_rawlen lua_objlen
19 /* Lua >= 5.2's getuservalue/setuservalue functions do not exist in prior
20 * versions but the older function lua_getfenv() can provide 100% of its
21 * capabilities (the reverse is not true). */
22 #define lua_getuservalue(L, index) lua_getfenv(L, index)
23 #define lua_setuservalue(L, index) lua_setfenv(L, index)
25 void *luaL_testudata(lua_State *L, int ud, const char *tname);
27 #define lupb_setfuncs(L, l) luaL_register(L, NULL, l)
29 #elif LUA_VERSION_NUM == 502
31 int luaL_typerror(lua_State *L, int narg, const char *tname);
33 #define lupb_setfuncs(L, l) luaL_setfuncs(L, l, 0)
36 #error Only Lua 5.1 and 5.2 are supported
39 #define lupb_assert(L, predicate) \
41 luaL_error(L, "internal error: %s, %s:%d ", #predicate, __FILE__, __LINE__);
43 /* Function for initializing the core library. This function is idempotent,
44 * and should be called at least once before calling any of the functions that
45 * construct core upb types. */
46 int luaopen_upb(lua_State *L);
48 /* Gets or creates a package table for a C module that is uniquely identified by
49 * "ptr". The easiest way to supply a unique "ptr" is to pass the address of a
50 * static variable private in the module's .c file.
52 * If this module has already been registered in this lua_State, pushes it and
55 * Otherwise, creates a new module table for this module with the given name,
56 * pushes it, and registers the given top-level functions in it. It also sets
57 * it as a global variable, but only if the current version of Lua expects that
58 * (ie Lua 5.1/LuaJIT).
60 * If "false" is returned, the caller is guaranteed that this lib has not been
61 * registered in this Lua state before (regardless of any funny business the
62 * user might have done to the global state), so the caller can safely perform
63 * one-time initialization. */
64 bool lupb_openlib(lua_State *L, void *ptr, const char *name,
65 const luaL_Reg *funcs);
67 /* Custom check/push functions. Unlike the Lua equivalents, they are pinned to
68 * specific types (instead of lua_Number, etc), and do not allow any implicit
69 * conversion or data loss. */
70 int64_t lupb_checkint64(lua_State *L, int narg);
71 int32_t lupb_checkint32(lua_State *L, int narg);
72 uint64_t lupb_checkuint64(lua_State *L, int narg);
73 uint32_t lupb_checkuint32(lua_State *L, int narg);
74 double lupb_checkdouble(lua_State *L, int narg);
75 float lupb_checkfloat(lua_State *L, int narg);
76 bool lupb_checkbool(lua_State *L, int narg);
77 const char *lupb_checkstring(lua_State *L, int narg, size_t *len);
78 const char *lupb_checkname(lua_State *L, int narg);
80 void lupb_pushint64(lua_State *L, int64_t val);
81 void lupb_pushint32(lua_State *L, int32_t val);
82 void lupb_pushuint64(lua_State *L, uint64_t val);
83 void lupb_pushuint32(lua_State *L, uint32_t val);
84 void lupb_pushdouble(lua_State *L, double val);
85 void lupb_pushfloat(lua_State *L, float val);
87 /* Registers a type with the given name, methods, and metamethods. */
88 void lupb_register_type(lua_State *L, const char *name, const luaL_Reg *m,
91 /* Checks the given upb_status and throws a Lua error if it is not ok. */
92 void lupb_checkstatus(lua_State *L, upb_status *s);
95 /** From def.c. ***************************************************************/
97 upb_fieldtype_t lupb_checkfieldtype(lua_State *L, int narg);
99 const upb_msgdef *lupb_msgdef_check(lua_State *L, int narg);
100 const upb_enumdef *lupb_enumdef_check(lua_State *L, int narg);
101 const upb_fielddef *lupb_fielddef_check(lua_State *L, int narg);
102 upb_symtab *lupb_symtab_check(lua_State *L, int narg);
104 void lupb_def_registertypes(lua_State *L);
107 /** From msg.c. ***************************************************************/
109 struct lupb_msgclass;
110 typedef struct lupb_msgclass lupb_msgclass;
112 upb_arena *lupb_arena_check(lua_State *L, int narg);
113 int lupb_arena_new(lua_State *L);
114 upb_arena *lupb_arena_get(lua_State *L);
115 int lupb_msg_pushref(lua_State *L, int msgclass, void *msg);
116 const upb_msg *lupb_msg_checkmsg(lua_State *L, int narg,
117 const lupb_msgclass *lmsgclass);
118 upb_msg *lupb_msg_checkmsg2(lua_State *L, int narg,
119 const upb_msglayout **layout);
121 const lupb_msgclass *lupb_msgclass_check(lua_State *L, int narg);
122 const upb_msglayout *lupb_msgclass_getlayout(lua_State *L, int narg);
123 const upb_msgdef *lupb_msgclass_getmsgdef(const lupb_msgclass *lmsgclass);
124 upb_msgfactory *lupb_msgclass_getfactory(const lupb_msgclass *lmsgclass);
125 void lupb_msg_registertypes(lua_State *L);
127 #endif /* UPB_LUA_UPB_H_ */