Struct ArgSpec 

pub struct ArgSpec {
    pub name: String,
    pub long: Option<String>,
    pub short: Option<char>,
    pub required: bool,
    pub help: String,
    pub value_name: Option<String>,
    pub default_value: Option<String>,
    pub possible_values: Option<Vec<String>>,
}

Argument specification

Fields

name: String

Argument name (positional) or option name

long: Option<String>

Long option name (e.g., “–output”)

short: Option<char>

Short option name (e.g., “-o”)

required: bool

Whether this argument is required

help: String

Help text for this argument

value_name: Option<String>

Value placeholder name (e.g., “FILE”)

default_value: Option<String>

Default value if not provided

possible_values: Option<Vec<String>>

List of allowed values

Implementations

impl ArgSpec

pub fn positional(name: impl Into<String>) -> Self

Create a positional argument

pub fn option(name: impl Into<String>, long: impl Into<String>) -> Self

Create an option with long name

pub fn required(self) -> Self

Set as required

pub fn help(self, help: impl Into<String>) -> Self

Set help text

pub fn short(self, short: char) -> Self

Set short option

pub fn default(self, value: impl Into<String>) -> Self

Set default value

Trait Implementations

impl Clone for ArgSpec

fn clone(&self) -> ArgSpec

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ArgSpec

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for ArgSpec

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for ArgSpec

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.