Enum QueryExpr 

pub enum QueryExpr<L> {
    And(Vec<QueryExpr<L>>),
    Or(Vec<QueryExpr<L>>),
    Not(Box<QueryExpr<L>>),
    Leaf(L),
}

A boolean expression tree over leaves of type L.

The tokenizer/parser produce QueryExpr<String> (leaves are raw atom strings); Frontend::parse_atom expands each atom into a QueryExpr<QueryLeaf> sub-tree (a range atom becomes an And of two bounds, a value group becomes an Or, and so on).

Variants

And(Vec<QueryExpr<L>>)

Or(Vec<QueryExpr<L>>)

Not(Box<QueryExpr<L>>)

Leaf(L)

Trait Implementations

impl<L: Clone> Clone for QueryExpr<L>

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<L: Debug> Debug for QueryExpr<L>

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

Formats the value using the given formatter.

impl<L: PartialEq> PartialEq for QueryExpr<L>

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

Equality operator ==.

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

Inequality operator !=.

impl<L: PartialEq> StructuralPartialEq for QueryExpr<L>