Struct AnnotationDef 

pub struct AnnotationDef {
    pub name: String,
    pub name_span: Span,
    pub doc_comment: Option<DocComment>,
    pub params: Vec<FunctionParameter>,
    pub allowed_targets: Option<Vec<AnnotationTargetKind>>,
    pub handlers: Vec<AnnotationHandler>,
    pub span: Span,
}

Annotation definition with lifecycle hooks

Annotations are Shape’s aspect-oriented programming mechanism. They can define handlers for different lifecycle events:

annotation pattern() {
    on_define(fn, ctx) { ctx.registry("patterns").set(fn.name, fn); }
    metadata() { return { is_pattern: true }; }
}

Fields

name: String

name_span: Span

doc_comment: Option<DocComment>

params: Vec<FunctionParameter>

Annotation parameters (e.g., period in @warmup(period))

allowed_targets: Option<Vec<AnnotationTargetKind>>

Optional explicit target restrictions from targets: [...]. If None, target applicability is inferred from handler kinds.

handlers: Vec<AnnotationHandler>

Lifecycle handlers (on_define, before, after, metadata)

span: Span

Full span of the annotation definition

Trait Implementations

impl Clone for AnnotationDef

fn clone(&self) -> AnnotationDef

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for AnnotationDef

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for AnnotationDef

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for AnnotationDef

fn eq(&self, other: &AnnotationDef) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for AnnotationDef

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for AnnotationDef