Struct PatternContext 

pub struct PatternContext {
    pub stores: Vec<String>,
    pub allow_irrefutable: bool,
    pub fail_pop: Vec<BlockIdx>,
    pub on_top: usize,
}

The pattern context holds information about captured names and jump targets.

Fields

stores: Vec<String>

A list of names captured by the pattern.

allow_irrefutable: bool

If false, then any name captures against our subject will raise.

fail_pop: Vec<BlockIdx>

A list of jump target labels used on pattern failure.

on_top: usize

The number of items on top of the stack that should remain.

Implementations

impl PatternContext

pub const fn new() -> PatternContext

pub fn fail_pop_size(&self) -> usize

Trait Implementations

impl Clone for PatternContext

fn clone(&self) -> PatternContext

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Default for PatternContext

fn default() -> PatternContext

Returns the “default value” for a type.