Enum Matcher

pub enum Matcher<E: Queryable> {
    Or {
        lhs: Box<Matcher<E>>,
        rhs: Box<Matcher<E>>,
    },
    And {
        lhs: Box<Matcher<E>>,
        rhs: Box<Matcher<E>>,
    },
    Match {
        key_value: E::KeyValue,
    },
}

A node in the Query AST.

Variants

Or

An OR matches if either of its branches match.

Fields

lhs: Box<Matcher<E>>

The left-hand-side of this node.

rhs: Box<Matcher<E>>

The right-hand-side of this node.

And

An AND matches only if both of its branches match.

Fields

lhs: Box<Matcher<E>>

The left-hand-side of this node.

rhs: Box<Matcher<E>>

The right-hand-side of this node.

Match

A match expression is the basic building block of a Query. It matches if its key_value matches (i.e., Queryable::matches with this as argument)

Fields

key_value: E::KeyValue

The key and it’s value.

status:open
^^^^^^ ^^^^
   |    |
   |    +---> Value
   |
   +------> Key

Trait Implementations

impl<E: Clone + Queryable> Clone for Matcher<E>

where E::KeyValue: Clone,

fn clone(&self) -> Matcher<E>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<E: Debug + Queryable> Debug for Matcher<E>

where E::KeyValue: Debug,

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

Formats the value using the given formatter.

impl<E: Queryable> Display for Matcher<E>

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

Formats the value using the given formatter.