Struct versions::Chunk

pub struct Chunk(pub Vec<Unit>);

A logical unit of a version number.

Can consist of multiple letters and numbers. Groups of these (i.e. Chunks) are separated by periods to form a full version number.

Defined as a newtype wrapper so that we can define custom parser and trait methods.

Examples

• r3
• 0rc1
• 20150826

Implementations

impl Chunk

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

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

use versions::{Chunk, Unit};

let v = Chunk(vec![Unit::Digits(1)]);
assert_eq!(Some(1), v.single_digit());

let v = Chunk(vec![Unit::Letters("abc".to_string())]);
assert_eq!(None, v.single_digit());

let v = Chunk(vec![Unit::Digits(1), Unit::Letters("abc".to_string())]);
assert_eq!(None, v.single_digit());

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

Like single_digit, but will grab the u32 even if there were more values in the Chunk.

use versions::{Chunk, Unit};

let v = Chunk(vec![Unit::Digits(1)]);
assert_eq!(Some(1), v.single_digit_lenient());

let v = Chunk(vec![Unit::Letters("abc".to_string())]);
assert_eq!(None, v.single_digit_lenient());

let v = Chunk(vec![Unit::Digits(0), Unit::Letters("a".to_string())]);
assert_eq!(Some(0), v.single_digit_lenient());

Trait Implementations

impl Clone for Chunk

fn clone(&self) -> Chunk

Returns a copy 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 Eq for Chunk

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, 

Feeds a slice of this type into the given Hasher.

impl Ord for Chunk

A custom implementation.

fn cmp(&self, other: &Self) -> Ordering

This method returns an Ordering between self and other.

#[must_use]fn max(self, other: Self) -> Self

Compares and returns the maximum of two values.

#[must_use]fn min(self, other: Self) -> Self

Compares and returns the minimum of two values.

#[must_use]fn clamp(self, min: Self, max: Self) -> Self

🔬 This is a nightly-only experimental API. (clamp)

Restrict a value to a certain interval.

impl PartialEq<Chunk> for Chunk

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

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Chunk) -> bool

This method tests for !=.

impl PartialOrd<Chunk> for Chunk

fn partial_cmp(&self, other: &Self) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

#[must_use]fn lt(&self, other: &Rhs) -> bool

This method tests less than (for self and other) and is used by the < operator.

#[must_use]fn le(&self, other: &Rhs) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator.

#[must_use]fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for self and other) and is used by the > operator.

#[must_use]fn ge(&self, other: &Rhs) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl StructuralEq for Chunk

impl StructuralPartialEq for Chunk