GenAttributes

1 min read

Import: import system.codegen;

GenAttributes

Typed access to custom attributes declared with @attribute.

public static class GenAttributes

id

Returns the stable identifier of attribute type A.

public static extern fun id<A>(): string

decode

Decodes the first matching attribute value.

public static extern fun decode<A>(borrow attrs: List<GenAttribute>): Option<A>

decode_all

Decodes every matching attribute value in source order.

public static extern fun decode_all<A>(borrow attrs: List<GenAttribute>): List<A>

has

Returns whether an attribute with identifier id is present.

public static fun has(borrow attrs: List<GenAttribute>, borrow id: string): bool