Enum AlternativeExprs 

enum AlternativeExprs<'db> {
    Few(FxHashSet<Expr<'db>>),
    Many,
}

Helper enum to squash big number of alternative trees into Many variant as there is too many to take into account.

Variants

Few(FxHashSet<Expr<'db>>)

There are few trees, so we keep track of them all

Many

There are too many trees to keep track of

Implementations

impl<'db> AlternativeExprs<'db>

fn new( threshold: usize, exprs: impl Iterator<Item = Expr<'db>>, ) -> AlternativeExprs<'db>

Construct alternative trees

Arguments

threshold - threshold value for many trees (more than that is many) exprs - expressions iterator

fn exprs(&self, ty: &Type<'db>) -> Vec<Expr<'db>>

Get type trees stored in alternative trees (or Expr::Many in case of many)

Arguments

ty - Type of expressions queried (this is used to give type to Expr::Many)

fn extend_with_threshold( &mut self, threshold: usize, exprs: impl Iterator<Item = Expr<'db>>, )

Extend alternative expressions

Arguments

threshold - threshold value for many trees (more than that is many) exprs - expressions iterator

fn is_many(&self) -> bool

Trait Implementations

impl<'db> Debug for AlternativeExprs<'db>

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

Formats the value using the given formatter.