Re: [tarantool-patches] Re: [PATCH v3 4/7] lib: update msgpuck library

[Vladimir Davydov <vdavydov.dev@gmail.com>]

On Fri, Apr 05, 2019 at 08:17:25PM +0300, Kirill Shcherbatov wrote:
> The msgpack dependency has been updated because the new version
> introduces the new method mp_stack_top for the mp_stack class
> which we will use to store a pointer for a multikey frame to
> initialize a field_map in case of multikey index.
> 
> As the library API has changed, the code has been modified
> correspondingly.
> 
> Needed for #1012
> ---
>  src/box/tuple_format.c | 9 +++++----
>  src/box/vy_stmt.c      | 8 ++++----
>  src/lib/msgpuck        | 2 +-
>  3 files changed, 10 insertions(+), 9 deletions(-)
> 
> diff --git a/src/box/tuple_format.c b/src/box/tuple_format.c
> index 1043707ad..093046b37 100644
> --- a/src/box/tuple_format.c
> +++ b/src/box/tuple_format.c
> @@ -850,8 +850,8 @@ tuple_field_map_create(struct tuple_format *format, const char *tuple,
>  	struct tuple_field *field;
>  	struct json_token *parent = &format->fields.root;
>  	while (true) {
> -		int idx;
> -		while ((idx = mp_stack_advance(&stack)) == -1) {
> +		struct mp_frame *frame = mp_stack_top(&stack);
> +		while (!mp_frame_advance(frame)) {
>  			/*
>  			 * If the elements of the current frame
>  			 * are over, pop this frame out of stack
> @@ -863,6 +863,7 @@ tuple_field_map_create(struct tuple_format *format, const char *tuple,
>  			mp_stack_pop(&stack);
>  			if (mp_stack_is_empty(&stack))
>  				goto finish;
> +			frame = mp_stack_top(&stack);
>  			parent = parent->parent;
>  		}
>  		/*
> @@ -871,10 +872,10 @@ tuple_field_map_create(struct tuple_format *format, const char *tuple,
>  		 * for the subsequent format::fields lookup.
>  		 */
>  		struct json_token token;
> -		switch (mp_stack_type(&stack)) {
> +		switch (frame->type) {
>  		case MP_ARRAY:
>  			token.type = JSON_TOKEN_NUM;
> -			token.num = idx;
> +			token.num = frame->idx;
>  			break;
>  		case MP_MAP:
>  			if (mp_typeof(*pos) != MP_STR) {
> diff --git a/src/box/vy_stmt.c b/src/box/vy_stmt.c
> index 7387d72be..776b1f69c 100644
> --- a/src/box/vy_stmt.c
> +++ b/src/box/vy_stmt.c
> @@ -447,18 +447,18 @@ vy_stmt_new_surrogate_delete_raw(struct tuple_format *format,
>  	struct tuple_field *field;
>  	struct json_token *parent = &format->fields.root;
>  	while (true) {
> -		int idx;
> -		while ((idx = mp_stack_advance(&stack)) == -1) {
> +		struct mp_frame *frame = mp_stack_top(&stack);
> +		while (!mp_frame_advance(frame)) {
>  			mp_stack_pop(&stack);
>  			if (mp_stack_is_empty(&stack))
>  				goto finish;
>  			parent = parent->parent;

mp_stack_top is missing!

This result in assertion failure in engine/json. Looks like you didn't
bother to run tests before submitting the patch.

Fixed and pushed to master.

>  		}
>  		struct json_token token;
> -		switch (mp_stack_type(&stack)) {
> +		switch (frame->type) {
>  		case MP_ARRAY:
>  			token.type = JSON_TOKEN_NUM;
> -			token.num = idx;
> +			token.num = frame->idx;
>  			break;
>  		case MP_MAP:
>  			if (mp_typeof(*src_pos) != MP_STR) {