Struct Frame

pub struct Frame { /* private fields */ }

A variable scope.

Implementations

impl Frame

pub fn new() -> Frame

pub fn define(&mut self, key: &str)

pub fn set(&mut self, key: &str, value: Value)

pub fn remove(&mut self, key: &str) -> Option<Arc<Variable>>

pub fn get(&self, key: &str) -> Option<Arc<Variable>>

pub fn get_args(&self) -> Vec<Arc<Variable>>

Returns $1, $2, …

pub fn get_string_args(&self) -> Vec<String>

Returns $1, $2, …

pub fn set_args(&mut self, args: &[String])

Sets $1, $2, …

pub fn set_nth_arg(&mut self, index: usize, value: Value)

Sets $<index>.

pub fn remove_nth_arg(&mut self, index: usize) -> Option<Arc<Variable>>

Removes $<index>.

pub fn get_nth_arg(&self, index: usize) -> Option<Arc<Variable>>

Returns $<index>.

pub fn num_args(&self) -> usize

The number of function arguments ($1, …).

Trait Implementations

impl Debug for Frame

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

Formats the value using the given formatter.