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| author |   Petteri Aimonen <jpa@npb.mail.kapsi.fi> | 2011-09-12 18:53:33 +0000 |
|---|---|---|
| committer | Petteri Aimonen <jpa@npb.mail.kapsi.fi> | 2011-09-12 18:53:33 +0000 |
| commit | d4abb63c052dc9d4c23ce72e498b4c7483f3b7cb (patch) | |
| tree | 340d5abed388ef4abda42f6e4208948abfb9efb9 /docs | |
| parent | 35814517ad9da0edad3905269ea41facfb120f3c (diff) | |
Tests for callback fields
git-svn-id: https://svn.kapsi.fi/jpa/nanopb@974 e3a754e5-d11d-0410-8d38-ebb782a927b9
Diffstat (limited to 'docs')
| -rw-r--r-- | docs/concepts.rst | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/docs/concepts.rst b/docs/concepts.rst index e6076401..c4e5476e 100644 --- a/docs/concepts.rst +++ b/docs/concepts.rst @@ -201,7 +201,7 @@ Decoding callbacks bool (*decode)(pb_istream_t *stream, const pb_field_t *field, void *arg); -When decoding, the callback receives a length-limited substring that reads the contents of a single field. The field tag has already been read. +When decoding, the callback receives a length-limited substring that reads the contents of a single field. The field tag has already been read. For *string* and *bytes*, the length value has already been parsed, and is available at *stream->bytes_left*. The callback will be called multiple times for repeated fields. For packed fields, you can either read multiple values until the stream ends, or leave it to `pb_decode`_ to call your function over and over until all values have been read. |