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feat(util/lua): add check_atleast_num_args helper function

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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
This commit is contained in:
Leonardo de Moura 2014-06-11 13:18:35 -07:00
parent 1972a09021
commit c8e272d20b
2 changed files with 7 additions and 3 deletions
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8
src/util/lua.cpp
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@ -197,11 +197,13 @@ lua_migrate_fn get_migrate_fn(lua_State * L, int i) {
} }
void check_num_args(lua_State * L, int num) { void check_num_args(lua_State * L, int num) {
if (lua_gettop(L) != num) throw exception("incorrect number of arguments in function application"); if (lua_gettop(L) != num) throw exception("incorrect number of arguments to function");
} }
void check_atmost_num_args(lua_State * L, int high) { void check_atmost_num_args(lua_State * L, int high) {
if (lua_gettop(L) > high) throw exception("too many arguments in function application"); if (lua_gettop(L) > high) throw exception("too many arguments to function");
}
void check_atleast_num_args(lua_State * L, int low) {
if (lua_gettop(L) < low) throw exception("too few arguments to function");
} }
} }

2
src/util/lua.h
View file

@ -143,5 +143,7 @@ inline int push_nil(lua_State * L) { lua_pushnil(L); return 1; }
void check_num_args(lua_State * L, int num); void check_num_args(lua_State * L, int num);
/** \brief Throw an exception if lua_gettop(L) > high */ /** \brief Throw an exception if lua_gettop(L) > high */
void check_atmost_num_args(lua_State * L, int high); void check_atmost_num_args(lua_State * L, int high);
/** \brief Throw an exception if lua_gettop(L) < low */
void check_atleast_num_args(lua_State * L, int low);
// ======================================= // =======================================
} }