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bd76d25d | 1 | /* Copyright (c) 2009, 2010 Nicira Networks |
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2 | * |
3 | * Licensed under the Apache License, Version 2.0 (the "License"); | |
4 | * you may not use this file except in compliance with the License. | |
5 | * You may obtain a copy of the License at: | |
6 | * | |
7 | * http://www.apache.org/licenses/LICENSE-2.0 | |
8 | * | |
9 | * Unless required by applicable law or agreed to in writing, software | |
10 | * distributed under the License is distributed on an "AS IS" BASIS, | |
11 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
12 | * See the License for the specific language governing permissions and | |
13 | * limitations under the License. | |
14 | */ | |
15 | ||
16 | #ifndef OVSDB_PARSER_H | |
17 | #define OVSDB_PARSER_H 1 | |
18 | ||
19 | #include <stdbool.h> | |
20 | #include "compiler.h" | |
21 | #include "json.h" | |
22 | #include "svec.h" | |
23 | #include "util.h" | |
24 | ||
25 | struct ovsdb_parser { | |
26 | char *name; /* Used only in error messages. */ | |
27 | struct svec used; /* Already-parsed names from 'object'. */ | |
28 | const struct json *json; /* JSON object being parsed. */ | |
29 | struct ovsdb_error *error; /* Error signaled, if any. */ | |
30 | }; | |
31 | ||
32 | /* Check that the JSON types make the bitwise tricks below work OK. */ | |
33 | BUILD_ASSERT_DECL(JSON_NULL >= 0 && JSON_NULL < 10); | |
34 | BUILD_ASSERT_DECL(JSON_FALSE >= 0 && JSON_FALSE < 10); | |
35 | BUILD_ASSERT_DECL(JSON_TRUE >= 0 && JSON_TRUE < 10); | |
36 | BUILD_ASSERT_DECL(JSON_OBJECT >= 0 && JSON_OBJECT < 10); | |
37 | BUILD_ASSERT_DECL(JSON_ARRAY >= 0 && JSON_ARRAY < 10); | |
38 | BUILD_ASSERT_DECL(JSON_INTEGER >= 0 && JSON_INTEGER < 10); | |
39 | BUILD_ASSERT_DECL(JSON_REAL >= 0 && JSON_REAL < 10); | |
40 | BUILD_ASSERT_DECL(JSON_STRING >= 0 && JSON_STRING < 10); | |
41 | BUILD_ASSERT_DECL(JSON_N_TYPES == 8); | |
42 | ||
43 | enum ovsdb_parser_types { | |
44 | OP_NULL = 1 << JSON_NULL, /* null */ | |
45 | OP_FALSE = 1 << JSON_FALSE, /* false */ | |
46 | OP_TRUE = 1 << JSON_TRUE, /* true */ | |
47 | OP_OBJECT = 1 << JSON_OBJECT, /* {"a": b, "c": d, ...} */ | |
48 | OP_ARRAY = 1 << JSON_ARRAY, /* [1, 2, 3, ...] */ | |
49 | OP_INTEGER = 1 << JSON_INTEGER, /* 123. */ | |
50 | OP_NONINTEGER = 1 << JSON_REAL, /* 123.456. */ | |
51 | OP_STRING = 1 << JSON_STRING, /* "..." */ | |
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52 | OP_ANY = (OP_NULL | OP_FALSE | OP_TRUE | OP_OBJECT | OP_ARRAY |
53 | | OP_INTEGER | OP_NONINTEGER | OP_STRING), | |
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54 | |
55 | OP_BOOLEAN = OP_FALSE | OP_TRUE, | |
56 | OP_NUMBER = OP_INTEGER | OP_NONINTEGER, | |
57 | ||
58 | OP_ID = 1 << JSON_N_TYPES, /* "[_a-zA-Z][_a-zA-Z0-9]*" */ | |
59 | OP_OPTIONAL = 1 << (JSON_N_TYPES + 1) /* no value at all */ | |
60 | }; | |
61 | ||
62 | void ovsdb_parser_init(struct ovsdb_parser *, const struct json *, | |
63 | const char *name, ...) | |
64 | PRINTF_FORMAT(3, 4); | |
65 | const struct json *ovsdb_parser_member(struct ovsdb_parser *, const char *name, | |
124f9671 | 66 | enum ovsdb_parser_types); |
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67 | |
68 | void ovsdb_parser_raise_error(struct ovsdb_parser *parser, | |
69 | const char *format, ...) | |
70 | PRINTF_FORMAT(2, 3); | |
71 | bool ovsdb_parser_has_error(const struct ovsdb_parser *); | |
72 | struct ovsdb_error *ovsdb_parser_get_error(const struct ovsdb_parser *); | |
73 | struct ovsdb_error *ovsdb_parser_finish(struct ovsdb_parser *) | |
74 | WARN_UNUSED_RESULT; | |
bd76d25d | 75 | void ovsdb_parser_destroy(struct ovsdb_parser *); |
f85f8ebb | 76 | |
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77 | bool ovsdb_parser_is_id(const char *string); |
78 | ||
f85f8ebb | 79 | #endif /* ovsdb-parser.h */ |