Enum RetPass 

pub enum RetPass {
    Void,
    Direct,
    String,
    Bytes,
    Buffer,
    Object {
        nullable: bool,
    },
}

How a value produced by the producer crosses back to the wrapper: the receiving contract, including the decode step and the release obligation.

Sync returns, async results, and iterator elements all use this.

Variants

Void

No return value.

Direct

By-value return (scalar, bool, C-style enum): use directly, nothing to free.

String

Owned (const uint8_t*, out_len) UTF-8: decode into the native string, then release with {prefix}_free_bytes.

Bytes

Owned (const uint8_t*, out_len) raw bytes: copy, then release with {prefix}_free_bytes.

Buffer

Owned (const uint8_t*, out_len) value buffer: decode via the wire format (Ty::wire), adopting any object tokens it carries, then release with {prefix}_free_bytes.

Object

One strong object reference the wrapper adopts into its disposal idiom, eventually released with the interface’s _destroy symbol (InterfaceBinding::destroy_symbol, from Model::interface). When nullable, the IDL type is Interface? and a null return means none.

Fields

nullable: bool

true for Interface?: a null return is a legal “none” result.

Implementations

impl RetPass

pub fn of(ty: Option<&Ty>) -> RetPass

The receiving contract for a value of type ty produced by a callable. None (a void return) is RetPass::Void.

Panics

Panics on an iterator return, whose contract is IteratorProtocol, not a value-passing plan (backends dispatch on CallShape before consulting this), and on a callback interface, which validation never admits as a return.

Trait Implementations

impl Clone for RetPass

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for RetPass

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

Formats the value using the given formatter.

impl Eq for RetPass

impl PartialEq for RetPass

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for RetPass