Enum Chunk

pub enum Chunk {
    Numeric(u32),
    Alphanum(String),
}

A logical unit of a version number.

Either entirely numerical (with no leading zeroes) or entirely alphanumerical (with a free mixture of numbers, letters, and hyphens).

Groups of these (like Release) are separated by periods to form a full section of a version number.

Examples

• 1
• 20150826
• r3
• 0rc1-abc3

Variants

Numeric(u32)

A nice, pure number.

Alphanum(String)

A mixture of letters, numbers, and hyphens.

Implementations

impl Chunk

pub fn single_digit(&self) -> Option<u32>

If this Chunk is made up of a single digit, then pull out the inner value.

use versions::Chunk;

let v = Chunk::Numeric(1);
assert_eq!(Some(1), v.single_digit());

let v = Chunk::Alphanum("abc".to_string());
assert_eq!(None, v.single_digit());

let v = Chunk::Alphanum("1abc".to_string());
assert_eq!(None, v.single_digit());

pub fn single_digit_lenient(&self) -> Option<u32>

Like Chunk::single_digit, but will grab a leading u32 even if followed by letters.

use versions::Chunk;

let v = Chunk::Numeric(1);
assert_eq!(Some(1), v.single_digit_lenient());

let v = Chunk::Alphanum("abc".to_string());
assert_eq!(None, v.single_digit_lenient());

let v = Chunk::Alphanum("1abc".to_string());
assert_eq!(Some(1), v.single_digit_lenient());

pub fn single_digit_lenient_post(&self) -> Option<u32>

Like Chunk::single_digit, but will grab a trailing u32.

use versions::Chunk;

let v = Chunk::Alphanum("r23".to_string());
assert_eq!(Some(23), v.single_digit_lenient_post());

Trait Implementations

impl Clone for Chunk

fn clone(&self) -> Chunk

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Chunk

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

Formats the value using the given formatter.

impl Display for Chunk

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

Formats the value using the given formatter.

impl Hash for Chunk

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for Chunk

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

impl StructuralPartialEq for Chunk