Enum Boundary 

pub enum Boundary {
    End,
    DashDash(usize),
    EndOfOptions(usize),
    NonOption(usize),
}

What: How option parsing ended; each variant holds the index of the ending token. Why: Tokens after the boundary are never options, and commands treat -- specially.

In TS you’d write (pseudocode):

type Boundary = { kind: 'end' } | { kind: 'dash-dash' | 'end-of-options' | 'non-option'; token: number };

Variants

End

Every token was read.

DashDash(usize)

-- at this index (parse-options.c:1113-1118).

EndOfOptions(usize)

--end-of-options at this index (1119-1125).

NonOption(usize)

First non-option at this index, under stop_at_non_option (1015-1016).

Trait Implementations

impl Clone for Boundary

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Boundary

impl Debug for Boundary

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

Formats the value using the given formatter.

impl Eq for Boundary

impl PartialEq for Boundary

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Boundary