Function array_item

crates/flowtrace-cli/src/explain.rs:212–222

If `s` is an array, return its element schema; else `None`. Tuple-typed arrays (`items: [schema, schema, …]`) and boolean-schema items are not supported and yield `None`.

(s: &'a SchemaObject)

/// arrays (`items: [schema, schema, …]`) and boolean-schema items are not
/// supported and yield `None`.
fn array_item<'a>(s: &'a SchemaObject) -> Option<&'a SchemaObject> {
    let arr = s.array.as_ref()?;
    let items = arr.items.as_ref()?;
    match items {
        SingleOrVec::Single(b) => match b.as_ref() {
            Schema::Object(o) => Some(o),
            Schema::Bool(_) => None,
        },
        SingleOrVec::Vec(_) => None,
    }
}

/// If `s` is a "map type" (object with `additionalProperties` and no declared
/// properties — what schemars emits for `BTreeMap<String, T>`), return the