1 2 /* 3 * Copyright (C) NGINX, Inc. 4 */ 5 6 #ifndef _NXT_VAR_H_INCLUDED_ 7 #define _NXT_VAR_H_INCLUDED_ 8 9 10 typedef struct nxt_var_s nxt_var_t; 11 typedef struct nxt_var_query_s nxt_var_query_t; 12 13 14 typedef nxt_int_t (*nxt_var_handler_t)(nxt_task_t *task, 15 nxt_str_t *str, 16 void *ctx, void *data); 17 18 typedef int64_t (*nxt_var_field_hash_t)(nxt_mp_t *mp, nxt_str_t *str); 19 20 typedef struct { 21 nxt_str_t name; 22 nxt_var_handler_t handler; 23 uint8_t cacheable; /* 1 bit */ 24 } nxt_var_decl_t; 25 26 27 typedef struct { 28 nxt_str_t *name; 29 nxt_var_handler_t handler; 30 void *data; 31 uint32_t index; 32 uint8_t cacheable; /* 1 bit */ 33 } nxt_var_ref_t; 34 35 36 typedef struct { 37 nxt_str_t name; 38 uint16_t hash; 39 } nxt_var_field_t; 40 41 42 typedef struct { 43 nxt_mp_t *pool; 44 nxt_lvlhsh_t hash; 45 nxt_str_t *spare; 46 } nxt_var_cache_t; 47 48 49 nxt_int_t nxt_var_register(nxt_var_decl_t *decl, size_t n); 50 nxt_int_t nxt_var_index_init(void); 51 52 nxt_var_field_t *nxt_var_field_get(nxt_array_t *fields, uint16_t index); 53 nxt_var_field_t *nxt_var_field_new(nxt_mp_t *mp, nxt_str_t *name, 54 uint32_t hash); 55 56 nxt_var_t *nxt_var_compile(nxt_tstr_state_t *state, nxt_str_t *str); 57 nxt_int_t nxt_var_test(nxt_tstr_state_t *state, nxt_str_t *str, u_char *error); 58 59 nxt_int_t nxt_var_interpreter(nxt_task_t *task, nxt_tstr_state_t *state, 60 nxt_var_cache_t *cache, nxt_var_t *var, nxt_str_t *str, void *ctx, 61 nxt_bool_t logging); 62 nxt_str_t *nxt_var_get(nxt_task_t *task, nxt_tstr_state_t *state, 63 nxt_var_cache_t *cache, nxt_str_t *name, void *ctx); 64 65 nxt_int_t nxt_http_unknown_var_ref(nxt_mp_t *mp, nxt_var_ref_t *ref, 66 nxt_str_t *name); 67 68 69 #endif /* _NXT_VAR_H_INCLUDED_ */ 70