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authorAnthony Liguori <aliguori@us.ibm.com>2009-11-11 10:38:59 -0600
committerAnthony Liguori <aliguori@us.ibm.com>2009-11-17 08:49:39 -0600
commitd7ff3acbb4496ecae92d7ce1d52579d55b19da2f (patch)
tree896a7ca9bd61da53342373fe5bfcddad834ff108 /json-streamer.h
parent5ab8558d9b7e9a5e4ceb0d86f54df7391af3543d (diff)
Add a JSON message boundary identifier
The second stage of our JSON parser is a simple state machine that identifies individual JSON values by counting the levels of nesting of tokens. It does not perform grammar validation. We use this to emit a full JSON value to the parser. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Diffstat (limited to 'json-streamer.h')
-rw-r--r--json-streamer.h39
1 files changed, 39 insertions, 0 deletions
diff --git a/json-streamer.h b/json-streamer.h
new file mode 100644
index 000000000..09f3bd70e
--- /dev/null
+++ b/json-streamer.h
@@ -0,0 +1,39 @@
+/*
+ * JSON streaming support
+ *
+ * Copyright IBM, Corp. 2009
+ *
+ * Authors:
+ * Anthony Liguori <aliguori@us.ibm.com>
+ *
+ * This work is licensed under the terms of the GNU LGPL, version 2.1 or later.
+ * See the COPYING.LIB file in the top-level directory.
+ *
+ */
+
+#ifndef QEMU_JSON_STREAMER_H
+#define QEMU_JSON_STREAMER_H
+
+#include "qlist.h"
+#include "json-lexer.h"
+
+typedef struct JSONMessageParser
+{
+ void (*emit)(struct JSONMessageParser *parser, QList *tokens);
+ JSONLexer lexer;
+ int brace_count;
+ int bracket_count;
+ QList *tokens;
+} JSONMessageParser;
+
+void json_message_parser_init(JSONMessageParser *parser,
+ void (*func)(JSONMessageParser *, QList *));
+
+int json_message_parser_feed(JSONMessageParser *parser,
+ const char *buffer, size_t size);
+
+int json_message_parser_flush(JSONMessageParser *parser);
+
+void json_message_parser_destroy(JSONMessageParser *parser);
+
+#endif