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, uint16_t field); 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 nxt_var_field_hash_t field_hash; 24 uint32_t index; 25 } nxt_var_decl_t; 26 27 28 typedef struct { 29 nxt_str_t name; 30 uint16_t hash; 31 uint32_t index; 32 } nxt_var_field_t; 33 34 35 nxt_inline nxt_bool_t 36 nxt_is_var(nxt_str_t *str) 37 { 38 return (nxt_memchr(str->start, '$', str->length) != NULL); 39 } 40 41 42 nxt_int_t nxt_var_register(nxt_var_decl_t *decl, size_t n); 43 nxt_int_t nxt_var_index_init(void); 44 45 nxt_var_field_t *nxt_var_field_get(nxt_array_t *fields, uint16_t index); 46 47 nxt_var_t *nxt_var_compile(nxt_str_t *str, nxt_mp_t *mp, nxt_array_t *fields, 48 nxt_bool_t strz); 49 nxt_int_t nxt_var_test(nxt_str_t *str, nxt_array_t *fields, u_char *error); 50 51 nxt_bool_t nxt_var_is_const(nxt_var_t *var); 52 void nxt_var_raw(nxt_var_t *var, nxt_str_t *str); 53 54 nxt_int_t nxt_var_query_init(nxt_var_query_t **query_p, void *ctx, 55 nxt_mp_t *mp); 56 void nxt_var_query(nxt_task_t *task, nxt_var_query_t *query, 57 nxt_var_t *var, nxt_str_t *str); 58 void nxt_var_query_resolve(nxt_task_t *task, nxt_var_query_t *query, void *data, 59 nxt_work_handler_t ready, nxt_work_handler_t error); 60 void nxt_var_query_handle(nxt_task_t *task, nxt_var_query_t *query, 61 nxt_bool_t failed); 62 63 64 #endif /* _NXT_VAR_H_INCLUDED_ */ 65