Enum DependencySpecificationOperator 

pub enum DependencySpecificationOperator {
    Less = -2,
    LessOrEqual = -1,
    Equal = 0,
    GreaterOrEqual = 1,
    Greater = 2,
}

Operator at the start of a DependencySpecification.

Variants

Less = -2

LessOrEqual = -1

Equal = 0

GreaterOrEqual = 1

Greater = 2

Implementations

impl DependencySpecificationOperator

pub fn parse(input: &str) -> Option<(DependencySpecificationOperator, &str)>

Parse a dependency spec operator from an input string.

assert_eq!(
    DependencySpecificationOperator::parse("<1.27.0-1"),
    Some((DependencySpecificationOperator::Less, "1.27.0-1")),
);
assert_eq!(
    DependencySpecificationOperator::parse("<=1.27.0-1"),
    Some((DependencySpecificationOperator::LessOrEqual, "1.27.0-1")),
);
assert_eq!(
    DependencySpecificationOperator::parse("=1.27.0-1"),
    Some((DependencySpecificationOperator::Equal, "1.27.0-1")),
);
assert_eq!(
    DependencySpecificationOperator::parse(">=1.27.0-1"),
    Some((DependencySpecificationOperator::GreaterOrEqual, "1.27.0-1")),
);
assert_eq!(
    DependencySpecificationOperator::parse(">1.27.0-1"),
    Some((DependencySpecificationOperator::Greater, "1.27.0-1")),
);
assert_eq!(DependencySpecificationOperator::parse("1.27.0-1"), None);

Trait Implementations

impl AsRef<str> for DependencySpecificationOperator

fn as_ref(&self) -> &str

Converts this type into a shared reference of the (usually inferred) input type.

impl Clone for DependencySpecificationOperator

fn clone(&self) -> DependencySpecificationOperator

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for DependencySpecificationOperator

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

Formats the value using the given formatter.

impl Display for DependencySpecificationOperator

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

Formats the value using the given formatter.

impl<'_derivative_strum> From<&'_derivative_strum DependencySpecificationOperator> for &'static str

fn from(x: &'_derivative_strum DependencySpecificationOperator) -> &'static str

Converts to this type from the input type.

impl From<DependencySpecificationOperator> for &'static str

fn from(x: DependencySpecificationOperator) -> &'static str

Converts to this type from the input type.

impl FromStr for DependencySpecificationOperator

type Err = ParseError

The associated error which can be returned from parsing.

fn from_str( s: &str, ) -> Result<DependencySpecificationOperator, <DependencySpecificationOperator as FromStr>::Err>

Parses a string s to return a value of this type.

impl PartialEq for DependencySpecificationOperator

fn eq(&self, other: &DependencySpecificationOperator) -> 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 TryFrom<&str> for DependencySpecificationOperator

type Error = ParseError

The type returned in the event of a conversion error.

fn try_from( s: &str, ) -> Result<DependencySpecificationOperator, <DependencySpecificationOperator as TryFrom<&str>>::Error>

Performs the conversion.

impl Copy for DependencySpecificationOperator

impl Eq for DependencySpecificationOperator

impl StructuralPartialEq for DependencySpecificationOperator