Variables refactoring.

This commit is to reimplement the variables with an unknown field
such as $header_{name} to make the parsing more generic,
it's a preparation for supporting response header variables.

1 files changed, 20 insertions, 8 deletions

diff --git a/src/nxt_var.h b/src/nxt_var.h
index d3da26eb..fde64f1e 100644
--- a/src/nxt_var.h
+++ b/src/nxt_var.h
@@ -13,23 +13,29 @@ typedef struct nxt_var_query_s  nxt_var_query_t;
 
 typedef nxt_int_t (*nxt_var_handler_t)(nxt_task_t *task,
                                        nxt_str_t *str,
-                                       void *ctx, uint16_t field);
+                                       void *ctx, void *data);
 
 typedef int64_t (*nxt_var_field_hash_t)(nxt_mp_t *mp, nxt_str_t *str);
 
 typedef struct {
     nxt_str_t               name;
     nxt_var_handler_t       handler;
-    nxt_var_field_hash_t    field_hash;
-    uint32_t                index;
     uint8_t                 cacheable;  /* 1 bit */
 } nxt_var_decl_t;
 
 
 typedef struct {
+    nxt_str_t               *name;
+    nxt_var_handler_t       handler;
+    void                    *data;
+    uint32_t                index;
+    uint8_t                 cacheable;  /* 1 bit */
+} nxt_var_ref_t;
+
+
+typedef struct {
     nxt_str_t               name;
     uint16_t                hash;
-    uint32_t                index;
 } nxt_var_field_t;
 
 
@@ -44,14 +50,20 @@ nxt_int_t nxt_var_register(nxt_var_decl_t *decl, size_t n);
 nxt_int_t nxt_var_index_init(void);
 
 nxt_var_field_t *nxt_var_field_get(nxt_array_t *fields, uint16_t index);
+nxt_var_field_t *nxt_var_field_new(nxt_mp_t *mp, nxt_str_t *name,
+    uint32_t hash);
 
-nxt_var_t *nxt_var_compile(nxt_str_t *str, nxt_mp_t *mp, nxt_array_t *fields);
-nxt_int_t nxt_var_test(nxt_str_t *str, nxt_array_t *fields, u_char *error);
+nxt_var_t *nxt_var_compile(nxt_tstr_state_t *state, nxt_str_t *str);
+nxt_int_t nxt_var_test(nxt_tstr_state_t *state, nxt_str_t *str, u_char *error);
 
-nxt_int_t nxt_var_interpreter(nxt_task_t *task, nxt_var_cache_t *cache,
-    nxt_var_t *var, nxt_str_t *str, void *ctx, nxt_bool_t logging);
+nxt_int_t nxt_var_interpreter(nxt_task_t *task, nxt_tstr_state_t *state,
+    nxt_var_cache_t *cache, nxt_var_t *var, nxt_str_t *str, void *ctx,
+    nxt_bool_t logging);
 nxt_str_t *nxt_var_get(nxt_task_t *task, nxt_var_cache_t *cache,
     nxt_str_t *name, void *ctx);
 
+nxt_int_t nxt_http_unknown_var_ref(nxt_tstr_state_t *state, nxt_var_ref_t *ref,
+    nxt_str_t *name);
+
 
 #endif /* _NXT_VAR_H_INCLUDED_ */