facet-rs / facet / 20026392864

58%

push

github

fix: add proxy support to facet-yaml deserializer

This adds support for both container-level and field-level proxy
attributes in facet-yaml, fixing issue #1177.

The fix adds two key checks to `deserialize_value`:

1. Container-level proxy: Uses `begin_custom_deserialization_from_shape()`
   to detect types with `#[facet(proxy = ProxyType)]` and deserialize
   through the proxy shape instead.

2. Field-level proxy: When handling transparent types, checks if the
   parent field has a custom deserialization function via
   `proxy_convert_in_fn()` and wraps the deserialization with
   `begin_custom_deserialization()`.

This matches the approach used in facet-json and enables the common
pattern of using a transparent proxy type (like `EnvStringDesr`) to
wrap deserialization for custom processing.

Fixes #1177

11 of 14 new or added lines in 1 file covered. (78.57%)

24893 of 42377 relevant lines covered (58.74%)

544.43 hits per line