7cd468a3d7
Change-Id: I7b51f88292e057c6443b12224486f2d0c9f8ae23 Signed-off-by: Damjan Marion <damarion@cisco.com>
146 lines
3.5 KiB
C
146 lines
3.5 KiB
C
/*
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* Copyright (c) 2015 Cisco and/or its affiliates.
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef included_vlib_lex_h
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#define included_vlib_lex_h
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#include <vppinfra/hash.h>
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#include <vppinfra/bitmap.h>
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#include <vppinfra/error.h>
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#include <vppinfra/pool.h>
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#define foreach_vlib_lex_global_token \
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_ (invalid) \
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_ (eof) \
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_ (word) \
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_ (number) \
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_ (lt) \
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_ (gt) \
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_ (dot) \
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_ (slash) \
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_ (qmark) \
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_ (equals) \
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_ (plus) \
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_ (minus) \
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_ (star) \
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_ (lpar) \
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_ (rpar)
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typedef enum
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{
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#define _(f) VLIB_LEX_##f,
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foreach_vlib_lex_global_token
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#undef _
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} vlib_lex_global_token_t;
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typedef enum
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{
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VLIB_LEX_IGNORE,
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VLIB_LEX_ADD_TO_TOKEN,
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VLIB_LEX_RETURN,
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VLIB_LEX_RETURN_AND_RESCAN,
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VLIB_LEX_KEYWORD_CHECK,
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VLIB_LEX_START_NUMBER,
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VLIB_LEX_ADD_TO_NUMBER,
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} vlib_lex_action_t;
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typedef struct
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{
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u16 action;
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u16 next_table_index;
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u16 token;
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} vlib_lex_table_entry_t;
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typedef struct
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{
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char *name;
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vlib_lex_table_entry_t entries[128];
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} vlib_lex_table_t;
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typedef struct
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{
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u32 token;
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union
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{
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uword as_uword;
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void *as_pointer;
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char *as_string;
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} value;
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} vlib_lex_token_t;
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typedef struct
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{
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vlib_lex_table_t *lex_tables;
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uword *lex_tables_by_name;
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/* Vector of token strings. */
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char **lex_token_names;
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/* Hash mapping c string name to token index. */
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uword *lex_tokens_by_name;
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/* Hash mapping c string keyword name to token index. */
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uword *lex_keywords;
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vlib_lex_token_t *pushback_vector;
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i32 pushback_sp;
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u32 current_table_index;
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uword current_token_value;
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uword current_number_base;
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/* Input string we are lex-ing. */
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u8 *input_vector;
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/* Current index into input vector. */
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u32 current_index;
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/* Re-used vector for forming token strings and hashing them. */
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u8 *token_buffer;
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} vlib_lex_main_t;
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vlib_lex_main_t vlib_lex_main;
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always_inline void
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vlib_lex_cleanup_token (vlib_lex_token_t * t)
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{
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if (t->token == VLIB_LEX_word)
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{
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u8 *tv = t->value.as_pointer;
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vec_free (tv);
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}
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}
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u16 vlib_lex_add_table (char *name);
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void vlib_lex_get_token (vlib_lex_main_t * lm, vlib_lex_token_t * result);
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u16 vlib_lex_add_token (vlib_lex_main_t * lm, char *token_name);
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void vlib_lex_set_action_range (u32 table_index, u8 lo, u8 hi, u16 action,
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u16 token, u32 next_table_index);
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void vlib_lex_reset (vlib_lex_main_t * lm, u8 * input_vector);
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format_function_t format_vlib_lex_token;
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#endif /* included_vlib_lex_h */
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/*
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* fd.io coding-style-patch-verification: ON
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*
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* Local Variables:
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* eval: (c-set-style "gnu")
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* End:
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*/
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