Re: [Qemu-devel] [PATCH 08/24] qobject: Propagate parse errors through qobject_from_jsonv()

[Kevin Wolf <kwolf@redhat.com>]

Am 27.02.2017 um 12:20 hat Markus Armbruster geschrieben:
> Signed-off-by: Markus Armbruster <armbru@redhat.com>
> ---
>  include/qapi/qmp/qjson.h           |  3 ++-
>  qobject/qjson.c                    | 12 ++++++++----
>  tests/libqtest.c                   |  2 +-
>  tests/test-qobject-input-visitor.c |  2 +-
>  4 files changed, 12 insertions(+), 7 deletions(-)
> 
> diff --git a/include/qapi/qmp/qjson.h b/include/qapi/qmp/qjson.h
> index 02b1f2c..6fe42d0 100644
> --- a/include/qapi/qmp/qjson.h
> +++ b/include/qapi/qmp/qjson.h
> @@ -19,7 +19,8 @@
>  
>  QObject *qobject_from_json(const char *string);
>  QObject *qobject_from_jsonf(const char *string, ...) GCC_FMT_ATTR(1, 2);
> -QObject *qobject_from_jsonv(const char *string, va_list *ap) GCC_FMT_ATTR(1, 0);
> +QObject *qobject_from_jsonv(const char *string, va_list *ap, Error **errp)
> +    GCC_FMT_ATTR(1, 0);
>  
>  QString *qobject_to_json(const QObject *obj);
>  QString *qobject_to_json_pretty(const QObject *obj);
> diff --git a/qobject/qjson.c b/qobject/qjson.c
> index 9a0de89..339c9f7 100644
> --- a/qobject/qjson.c
> +++ b/qobject/qjson.c
> @@ -12,6 +12,7 @@
>   */
>  
>  #include "qemu/osdep.h"
> +#include "qapi/error.h"
>  #include "qapi/qmp/json-lexer.h"
>  #include "qapi/qmp/json-parser.h"
>  #include "qapi/qmp/json-streamer.h"
> @@ -24,15 +25,17 @@ typedef struct JSONParsingState
>      JSONMessageParser parser;
>      va_list *ap;
>      QObject *result;
> +    Error *err;
>  } JSONParsingState;
>  
>  static void parse_json(JSONMessageParser *parser, GQueue *tokens)
>  {
>      JSONParsingState *s = container_of(parser, JSONParsingState, parser);
> -    s->result = json_parser_parse(tokens, s->ap);
> +
> +    s->result = json_parser_parse_err(tokens, s->ap, &s->err);
>  }
>  
> -QObject *qobject_from_jsonv(const char *string, va_list *ap)
> +QObject *qobject_from_jsonv(const char *string, va_list *ap, Error **errp)
>  {
>      JSONParsingState state = {};
>  
> @@ -43,12 +46,13 @@ QObject *qobject_from_jsonv(const char *string, va_list *ap)
>      json_message_parser_flush(&state.parser);
>      json_message_parser_destroy(&state.parser);
>  
> +    error_propagate(errp, state.err);
>      return state.result;
>  }
>  
>  QObject *qobject_from_json(const char *string)
>  {
> -    return qobject_from_jsonv(string, NULL);
> +    return qobject_from_jsonv(string, NULL, NULL);
>  }
>  
>  /*
> @@ -61,7 +65,7 @@ QObject *qobject_from_jsonf(const char *string, ...)
>      va_list ap;
>  
>      va_start(ap, string);
> -    obj = qobject_from_jsonv(string, &ap);
> +    obj = qobject_from_jsonv(string, &ap, NULL);
>      va_end(ap);
>  
>      assert(obj != NULL);
> diff --git a/tests/libqtest.c b/tests/libqtest.c
> index cf27afc..683d5e3 100644
> --- a/tests/libqtest.c
> +++ b/tests/libqtest.c
> @@ -442,7 +442,7 @@ void qmp_fd_sendv(int fd, const char *fmt, va_list ap)
>       * is an array type.
>       */
>      va_copy(ap_copy, ap);
> -    qobj = qobject_from_jsonv(fmt, &ap_copy);
> +    qobj = qobject_from_jsonv(fmt, &ap_copy, NULL);
>      va_end(ap_copy);

&error_abort might be appropriate here.

>      /* No need to send anything for an empty QObject.  */
> diff --git a/tests/test-qobject-input-visitor.c b/tests/test-qobject-input-visitor.c
> index 650637e..44885ee 100644
> --- a/tests/test-qobject-input-visitor.c
> +++ b/tests/test-qobject-input-visitor.c
> @@ -51,7 +51,7 @@ static Visitor *visitor_input_test_init_internal(TestInputVisitorData *data,
>  {
>      visitor_input_teardown(data, NULL);
>  
> -    data->obj = qobject_from_jsonv(json_string, ap);
> +    data->obj = qobject_from_jsonv(json_string, ap, NULL);
>      g_assert(data->obj);

And here, too.

Changed or unchanged:
Reviewed-by: Kevin Wolf <kwolf@redhat.com>