Module lua/utils
Push cdata of given ctypeid onto the stack.
CTypeID must be used from FFI at least once. Allocated memory returned uninitialized. Only numbers and pointers are supported.
Parameters:
-
L(lua_State*) — Lua State -
ctypeid(uint32_t) — FFI's CTypeID of this cdata
Returns
memory associated with this cdata
See also: luaL_checkcdata()
Check whether the function argument idx is a cdata.
Parameters:
-
L(lua_State*) — Lua State -
idx(int) — stack index -
ctypeid(uint32_t*) — output argument. FFI's CTypeID of returned cdata
Returns
memory associated with this cdata
See also: luaL_pushcdata()
Set finalizer function on a cdata object.
Equivalent to call ffi.gc(obj, function). Finalizer
function must be on the top of the stack.
Parameters:
-
L(lua_State*) — Lua State -
idx(int) — stack index
Return CTypeID (FFI) of given СDATA type.
Parameters:
-
L(lua_State*) — Lua State -
ctypename(const char*) — C type name as string (e.g. "struct request" or "uint32_t")
Returns
CTypeID
See also: luaL_pushcdata(), luaL_checkcdata()
Declare symbols for FFI.
Parameters:
-
L(lua_State*) — Lua State -
ctypename(const char*) — C definitions (e.g. "struct stat")
Returns
0 on success
Returns
LUA_ERRRUN, LUA_ERRMEM or LUA_ERRERR otherwise.
See also: ffi.cdef(def)
Push uint64_t onto the stack.
Parameters:
-
L(lua_State*) — Lua State -
val(uint64_t) — value to push
Push int64_t onto the stack.
Parameters:
-
L(lua_State*) — Lua State -
val(int64_t) — value to push
Check whether the argument idx is a uint64 or a convertible string and returns this number.
throws : error if the argument can't be converted
Check whether the argument idx is a int64 or a convertible string and returns this number.
throws : error if the argument can't be converted
Check whether the argument idx is a uint64 or a convertible string and returns this number.
Returns
the converted number or 0 of argument can't be converted
Check whether the argument idx is a int64 or a convertible string and returns this number.
Returns
the converted number or 0 of argument can't be converted
Push a tuple onto the stack.
Parameters:
L(lua_State*) — Lua State
throws : error on OOM
See also: luaT_istuple
Check whether idx is a tuple.
Parameters:
-
L(lua_State*) — Lua State -
idx(int) — the stack index
Returns
non-NULL if idx is a tuple
Returns
NULL if idx is not a tuple
Re-throw the last Tarantool error as a Lua object.
See also: lua_error(),
Similar to lua_cpcall(), but with the proper support of Tarantool errors.
Get the global Lua state used by Tarantool.