Enum RequiredMode 

pub enum RequiredMode {
    DeleteValue,
    DeleteParent,
}

Mode how required values should be validated in a SchemaProcessor.

Variants

DeleteValue

The default mode, which only deletes the value and leaves a remark.

Examples:

#[derive(Clone, Debug, Default, PartialEq, Empty, FromValue, IntoValue, ProcessValue)]
struct Item {
    #[metastructure(required = true)]
    name: Annotated<String>,
}

let mut item = Annotated::new(Item {
    name: Annotated::empty(),
});

let mut processor = SchemaProcessor::new().with_required(Default::default());
processor::process_value(&mut item, &mut processor, ProcessingState::root()).unwrap();

let name = &item.value().unwrap().name;
assert!(name.value().is_none());
assert!(name.meta().has_errors());

DeleteParent

Instead of removing the value, the entire container containing the value is removed.

Examples:

#[derive(Clone, Debug, Default, PartialEq, Empty, FromValue, IntoValue, ProcessValue)]
struct Item {
    #[metastructure(required = true)]
    name: Annotated<String>,
}

let mut item = Annotated::new(Item {
    name: Annotated::empty(),
});

let mut processor = SchemaProcessor::new().with_required(RequiredMode::DeleteParent);
processor::process_value(&mut item, &mut processor, ProcessingState::root()).unwrap();

assert!(item.meta().has_errors());
assert!(item.value().is_none());

Trait Implementations

impl Debug for RequiredMode

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for RequiredMode

fn default() -> RequiredMode

Returns the “default value” for a type.