Struct List 

pub struct List {
    pub items: Vec<Form>,
    pub line: u32,
}

A list, with the source line of its opening parenthesis: 0 when it was born in the prelude or made by a macro (S3.1’s explicit zero).

Fields

items: Vec<Form>

line: u32

Implementations

impl List

pub fn new(items: Vec<Form>, line: u32) -> List

pub fn count(&self) -> usize

pub fn nth(&self, i: usize) -> Result<&Form, Refusal>

VBA Nth: element i, 1-based, refusing past the end.

pub fn nth_list(&self, i: usize) -> Result<&List, Refusal>

VBA NthList: element i as a list, refusing an atom there.

pub fn head_sym(&self) -> Result<String, Refusal>

VBA HeadSym: the first element as a symbol’s text.

pub fn head_is(&self, name: &str) -> bool

VBA ListHeadIs over this list.

pub fn tail_from(&self, i: usize) -> List

The list from its ith element on, 1-based: VBA’s VlaSlice (cdr) as a copy, since nothing on this path is long enough to share.

Trait Implementations

impl Clone for List

fn clone(&self) -> List

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for List

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

Formats the value using the given formatter.

impl Default for List

fn default() -> List

Returns the “default value” for a type.

impl PartialEq for List

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

Equality operator ==.

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

Inequality operator !=.