1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
|
/*
* Copyright (c) 2015 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <vlib/parse.h>
always_inline void *
parse_last_match_value (vlib_parse_main_t * pm)
{
vlib_parse_item_t *i;
i = pool_elt_at_index (pm->parse_items,
vec_elt (pm->match_items,
vec_len (pm->match_items) - 1));
return i->value.as_pointer;
}
vlib_parse_match_t
eof_match (vlib_parse_main_t * pm, vlib_parse_type_t * type,
vlib_lex_token_t * t, vlib_parse_value_t * valuep)
{
return t->token ==
VLIB_LEX_eof ? VLIB_PARSE_MATCH_DONE : VLIB_PARSE_MATCH_FAIL;
}
PARSE_TYPE_INIT (eof, eof_match, 0 /* cleanup value */ ,
0 /* format value */ );
vlib_parse_match_t
rule_eof_match (vlib_parse_main_t * pm, vlib_parse_type_t * type,
vlib_lex_token_t * t, vlib_parse_value_t * valuep)
{
vlib_parse_match_function_t *fp = parse_last_match_value (pm);
pm->current_token_index--;
return fp ? fp (pm, type, t, valuep) : VLIB_PARSE_MATCH_RULE;
}
PARSE_TYPE_INIT (rule_eof, rule_eof_match, 0, 0);
vlib_parse_match_t
word_match (vlib_parse_main_t * pm, vlib_parse_type_t * type,
vlib_lex_token_t * t, vlib_parse_value_t * valuep)
{
u8 *tv, *iv;
int i;
if (t->token != VLIB_LEX_word)
return VLIB_PARSE_MATCH_FAIL;
tv = t->value.as_pointer;
iv = parse_last_match_value (pm);
for (i = 0; tv[i]; i++)
{
if (tv[i] != iv[i])
return VLIB_PARSE_MATCH_FAIL;
}
return iv[i] == 0 ? VLIB_PARSE_MATCH_FULL : VLIB_PARSE_MATCH_PARTIAL;
}
PARSE_TYPE_INIT (word, word_match, 0 /* clnup value */ ,
0 /* format value */ );
vlib_parse_match_t
number_match (vlib_parse_main_t * pm, vlib_parse_type_t * type,
vlib_lex_token_t * t, vlib_parse_value_t * valuep)
{
if (t->token == VLIB_LEX_number)
{
valuep->value.as_uword = t->value.as_uword;
return VLIB_PARSE_MATCH_VALUE;
}
return VLIB_PARSE_MATCH_FAIL;
}
static u8 *
format_value_number (u8 * s, va_list * args)
{
vlib_parse_value_t *v = va_arg (*args, vlib_parse_value_t *);
uword a = v->value.as_uword;
if (BITS (uword) == 64)
s = format (s, "%lld(0x%llx)", a, a);
else
s = format (s, "%ld(0x%lx)", a, a);
return s;
}
PARSE_TYPE_INIT (number, number_match, 0 /* cln value */ ,
format_value_number /* fmt value */ );
#define foreach_vanilla_lex_match_function \
_(plus) \
_(minus) \
_(star) \
_(slash) \
_(lpar) \
_(rpar)
#define LEX_MATCH_DEBUG 0
#define _(name) \
vlib_parse_match_t name##_match (vlib_parse_main_t *pm, \
vlib_parse_type_t *type, \
vlib_lex_token_t *t, \
vlib_parse_value_t *valuep) \
{ \
if (LEX_MATCH_DEBUG > 0) \
clib_warning ("against %U returns %s", \
format_vlib_lex_token, pm->lex_main, t, \
(t->token == VLIB_LEX_##name) \
? "VLIB_PARSE_MATCH_FULL" : \
"VLIB_PARSE_MATCH_FAIL"); \
if (t->token == VLIB_LEX_##name) \
return VLIB_PARSE_MATCH_FULL; \
return VLIB_PARSE_MATCH_FAIL; \
} \
\
PARSE_TYPE_INIT (name, name##_match, 0 /* cln value */, \
0 /* fmt val */);
foreach_vanilla_lex_match_function
#undef _
/* So we're linked in. */
static clib_error_t *
parse_builtin_init (vlib_main_t * vm)
{
return 0;
}
VLIB_INIT_FUNCTION (parse_builtin_init);
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
|
