Enum Arg 

pub(crate) enum Arg {
    Short(char, bool, OsString),
    Long(String, bool, OsString),
    ArgWord(OsString),
    Word(OsString),
    PosWord(OsString),
}

Preprocessed command line argument

OsString in Short/Long correspond to orignal command line item used for errors

Variants

Short(char, bool, OsString)

short flag: -f

bool indicates if following item is also part of this Short (created

Long(String, bool, OsString)

long flag: --flag bool tells if it looks like –key=val or not

ArgWord(OsString)

“val” part of –key=val -k=val -kval

Word(OsString)

separate word that can be command, positional or a separate argument to a flag

Can start with - or --, doesn’t have to be valid utf8

hello

PosWord(OsString)

separate word that goes after --, strictly positional

Can start with - or --, doesn’t have to be valid utf8

Implementations

impl Arg

pub(crate) fn os_str(&self) -> &OsStr

pub(crate) fn match_short(&self, val: char) -> bool

pub(crate) fn match_long(&self, val: &str) -> bool

Trait Implementations

impl Clone for Arg

fn clone(&self) -> Arg

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Arg

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

Formats the value using the given formatter.

impl Display for Arg

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

Formats the value using the given formatter.

impl PartialEq for Arg

fn eq(&self, other: &Arg) -> 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 Eq for Arg

impl StructuralPartialEq for Arg