Enum VersionMode 

pub enum VersionMode {
    NotRequested,
    Plain,
    Json,
}

How the binary was invoked with respect to the --version contract.

Variants

NotRequested

Caller passed neither --version nor --version --json.

Plain

--version alone: emit a single line.

Json

--version --json (in any order): emit the JSON form.

Implementations

impl VersionMode

pub fn from_args(args: &[String]) -> Self

Parse the requested mode from an argv slice (typically std::env::args()).

Trait Implementations

impl Clone for VersionMode

fn clone(&self) -> VersionMode

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for VersionMode

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

Formats the value using the given formatter.

impl PartialEq for VersionMode

fn eq(&self, other: &VersionMode) -> 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 Copy for VersionMode

impl Eq for VersionMode

impl StructuralPartialEq for VersionMode