Enum CommandSpec 

pub enum CommandSpec {
    Discriminated {
        forms: IndexMap<String, CommandForm>,
        fallback: Option<CommandForm>,
    },
    Single(CommandForm),
}

Variants

Discriminated

A command whose structure depends on a discriminator token, usually the first positional argument.

Fields

forms: IndexMap<String, CommandForm>

Known forms keyed by normalized discriminator token.

fallback: Option<CommandForm>

Fallback form to use when no discriminator matches.

Single(CommandForm)

A command with a single argument structure.

Implementations

impl CommandSpec

pub fn form_for(&self, first_arg: Option<&str>) -> &CommandForm

Resolve the command form for a specific invocation.

first_arg is typically the first non-comment argument in the call and is used for discriminated commands such as file(...) or install(...).

Trait Implementations

impl Clone for CommandSpec

fn clone(&self) -> CommandSpec

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for CommandSpec

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for CommandSpec

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for CommandSpec

fn eq(&self, other: &CommandSpec) -> 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 CommandSpec

impl StructuralPartialEq for CommandSpec