Struct UpvalDesc 

pub struct UpvalDesc {
    pub in_stack: bool,
    pub index: u8,
    pub name: Box<str>,
    pub read_only: bool,
}

Where a closure’s upvalue is captured from, relative to the enclosing function (PUC Upvaldesc).

Fields

in_stack: bool

captured from the enclosing frame’s registers (true) or from the enclosing closure’s own upvalues (false)

index: u8

Index in the enclosing frame’s register file (when in_stack) or in the enclosing closure’s upvalue array (otherwise).

name: Box<str>

variable name, for error messages and debug info

read_only: bool

the captured variable is <const> (5.5): assignment through this upvalue is a compile-time error

Trait Implementations

impl Clone for UpvalDesc

fn clone(&self) -> UpvalDesc

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for UpvalDesc

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

Formats the value using the given formatter.