diff options
author | Ben Pfaff <blp@nicira.com> | 2009-11-04 15:11:44 -0800 |
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committer | Ben Pfaff <blp@nicira.com> | 2009-11-04 17:12:10 -0800 |
commit | f85f8ebbfac946c19b3c6eb0f4170f579d0a4d25 (patch) | |
tree | 2111aee77751f2143773907f81c6adb9101afb6c /lib/ovsdb-parser.h | |
parent | f212909325be9bc7e296e1a32e2fc89694a0049f (diff) |
Initial implementation of OVSDB.
Diffstat (limited to 'lib/ovsdb-parser.h')
-rw-r--r-- | lib/ovsdb-parser.h | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/lib/ovsdb-parser.h b/lib/ovsdb-parser.h new file mode 100644 index 00000000..f9a2ef7e --- /dev/null +++ b/lib/ovsdb-parser.h @@ -0,0 +1,74 @@ +/* Copyright (c) 2009 Nicira Networks + * + * 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. + */ + +#ifndef OVSDB_PARSER_H +#define OVSDB_PARSER_H 1 + +#include <stdbool.h> +#include "compiler.h" +#include "json.h" +#include "svec.h" +#include "util.h" + +struct ovsdb_parser { + char *name; /* Used only in error messages. */ + struct svec used; /* Already-parsed names from 'object'. */ + const struct json *json; /* JSON object being parsed. */ + struct ovsdb_error *error; /* Error signaled, if any. */ +}; + +/* Check that the JSON types make the bitwise tricks below work OK. */ +BUILD_ASSERT_DECL(JSON_NULL >= 0 && JSON_NULL < 10); +BUILD_ASSERT_DECL(JSON_FALSE >= 0 && JSON_FALSE < 10); +BUILD_ASSERT_DECL(JSON_TRUE >= 0 && JSON_TRUE < 10); +BUILD_ASSERT_DECL(JSON_OBJECT >= 0 && JSON_OBJECT < 10); +BUILD_ASSERT_DECL(JSON_ARRAY >= 0 && JSON_ARRAY < 10); +BUILD_ASSERT_DECL(JSON_INTEGER >= 0 && JSON_INTEGER < 10); +BUILD_ASSERT_DECL(JSON_REAL >= 0 && JSON_REAL < 10); +BUILD_ASSERT_DECL(JSON_STRING >= 0 && JSON_STRING < 10); +BUILD_ASSERT_DECL(JSON_N_TYPES == 8); + +enum ovsdb_parser_types { + OP_NULL = 1 << JSON_NULL, /* null */ + OP_FALSE = 1 << JSON_FALSE, /* false */ + OP_TRUE = 1 << JSON_TRUE, /* true */ + OP_OBJECT = 1 << JSON_OBJECT, /* {"a": b, "c": d, ...} */ + OP_ARRAY = 1 << JSON_ARRAY, /* [1, 2, 3, ...] */ + OP_INTEGER = 1 << JSON_INTEGER, /* 123. */ + OP_NONINTEGER = 1 << JSON_REAL, /* 123.456. */ + OP_STRING = 1 << JSON_STRING, /* "..." */ + + OP_BOOLEAN = OP_FALSE | OP_TRUE, + OP_NUMBER = OP_INTEGER | OP_NONINTEGER, + + OP_ID = 1 << JSON_N_TYPES, /* "[_a-zA-Z][_a-zA-Z0-9]*" */ + OP_OPTIONAL = 1 << (JSON_N_TYPES + 1) /* no value at all */ +}; + +void ovsdb_parser_init(struct ovsdb_parser *, const struct json *, + const char *name, ...) + PRINTF_FORMAT(3, 4); +const struct json *ovsdb_parser_member(struct ovsdb_parser *, const char *name, + enum ovsdb_parser_types); + +void ovsdb_parser_raise_error(struct ovsdb_parser *parser, + const char *format, ...) + PRINTF_FORMAT(2, 3); +bool ovsdb_parser_has_error(const struct ovsdb_parser *); +struct ovsdb_error *ovsdb_parser_get_error(const struct ovsdb_parser *); +struct ovsdb_error *ovsdb_parser_finish(struct ovsdb_parser *) + WARN_UNUSED_RESULT; + +#endif /* ovsdb-parser.h */ |