diff options
Diffstat (limited to 'third_party/rust/uniffi_bindgen/src/scaffolding/templates/ErrorTemplate.rs')
-rw-r--r-- | third_party/rust/uniffi_bindgen/src/scaffolding/templates/ErrorTemplate.rs | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/third_party/rust/uniffi_bindgen/src/scaffolding/templates/ErrorTemplate.rs b/third_party/rust/uniffi_bindgen/src/scaffolding/templates/ErrorTemplate.rs new file mode 100644 index 0000000000..94538ecaa8 --- /dev/null +++ b/third_party/rust/uniffi_bindgen/src/scaffolding/templates/ErrorTemplate.rs @@ -0,0 +1,26 @@ +{# +// For each error declared in the UDL, we assume the caller has provided a corresponding +// rust `enum`. We provide the traits for sending it across the FFI, which will fail to +// compile if the provided struct has a different shape to the one declared in the UDL. +// +// We define a unit-struct to implement the trait to sidestep Rust's orphan rule (ADR-0006). It's +// public so other crates can refer to it via an `[External='crate'] typedef` +#} + +#[::uniffi::derive_error_for_udl( + {% if e.is_flat() -%} + flat_error, + {% if ci.should_generate_error_read(e) -%} + with_try_read, + {%- endif %} + {%- endif %} +)] +enum r#{{ e.name() }} { + {%- for variant in e.variants() %} + r#{{ variant.name() }} { + {%- for field in variant.fields() %} + r#{{ field.name() }}: {{ field.as_type().borrow()|type_rs }}, + {%- endfor %} + }, + {%- endfor %} +} |