Enum Atom 

#[non_exhaustive]
pub enum Atom<'a> {
    Lit(&'a str),
    Escaped(Cow<'a, str>),
    Param(Param<'a>),
    Subst(Box<Subst<'a>>),
    Star,
    Question,
    SquareOpen,
    SquareClose,
    Tilde,
    ProcSubIn(Vec<Cmd<'a>>),
    AnsiCQuoted(&'a str),
    BraceRange {
        start: &'a str,
        end: &'a str,
        step: Option<&'a str>,
    },
}

An atomic element within a word: literal text, expansion, or glob.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Lit(&'a str)

Literal text.

Escaped(Cow<'a, str>)

Backslash-escaped character.

Param(Param<'a>)

Parameter reference ($var, $1, $@, etc.).

Subst(Box<Subst<'a>>)

Substitution ($(cmd), ${var...}, $((expr))).

Star

* glob wildcard.

Question

? glob wildcard.

SquareOpen

[ glob bracket open.

SquareClose

] glob bracket close.

Tilde

~ tilde expansion.

ProcSubIn(Vec<Cmd<'a>>)

<(cmd) — process substitution (input).

AnsiCQuoted(&'a str)

ANSI-C $'...' — raw content between the quotes (escape sequences unresolved).

BraceRange

Brace range expansion: {start..end[..step]}.

Fields

start: &'a str

Range start value.

end: &'a str

Range end value.

step: Option<&'a str>

Optional step value.

Trait Implementations

impl<'a> Clone for Atom<'a>

fn clone(&self) -> Atom<'a>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'a> Debug for Atom<'a>

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

Formats the value using the given formatter.

impl<'a> PartialEq for Atom<'a>

fn eq(&self, other: &Atom<'a>) -> bool

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<'a> Eq for Atom<'a>

impl<'a> StructuralPartialEq for Atom<'a>