json-streamer: make brace/bracket count unsigned

It makes no sense to let brace_count and bracket_count go negative,
also because it immediately ends error recovery and sets them both
back to zero.  Instead set them to zero *before* choosing
whether to process the token queue; this makes it possible to
have the fields as unsigned.

Note that JSON_END_OF_INPUT now forces the parentheses to appear
balanced, so that the queue is emptied and an error is reported;
hence, the "type != JSON_END_OF_INPUT" condition can be removed.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-ID: <20260626101727.1727389-4-pbonzini@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
[Comment tweaked]
Signed-off-by: Markus Armbruster <armbru@redhat.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/include/qobject/json-parser.h b/include/qobject/json-parser.h
index 4c3d89f751..0cf6932ecd 100644
--- a/include/qobject/json-parser.h
+++ b/include/qobject/json-parser.h
@@ -31,8 +31,8 @@ typedef struct JSONMessageParser {
     void *opaque;
     JSONLexer lexer;
     JSONParserContext parser;
-    int brace_count;
-    int bracket_count;
+    unsigned int brace_count;
+    unsigned int bracket_count;
     GQueue tokens;
     uint64_t token_size;
 } JSONMessageParser;