Struct sql::query_model::validator::quantifier::QuantifierConstraint

pub struct QuantifierConstraint {
    min: Bound<usize>,
    max: Bound<usize>,
    allowed_types: usize,
    select_input: bool,
    select_parent: bool,
}

A model for constraints imposed on the input or ranging quantifiers of a query box.

Fields

min: Bound<usize>

Lower bound for the number of allowed quantifiers that match the allowed_types bitmask.

max: Bound<usize>

Upper bound for the number of allowed quantifiers that match the allowed_types bitmask.

allowed_types: usize

A bitmask of allowed QuantifierType variant discriminants.

select_input: bool

Indicates whether the input of a quantifier with an allowed_type must be a select box.

select_parent: bool

Indicates whether the parent of a quantifier with an allowed_type must be a select box.

Implementations

impl QuantifierConstraint

fn satisfies_q_type<'a>(&self, quantifier: &'a Quantifier) -> bool

Check if the given Quantifier satisfy the allowed_types of the this constraint.

fn satisfies_b_type<'a>(
    &self,
    quantifier: &'a Quantifier,
    model: &'a Model
) -> bool

Check if the boxes referenced by the given Quantifier satisfy the input_is_select and parent_is_select of the this constraint.

Trait Implementations

impl Clone for QuantifierConstraint

fn clone(&self) -> QuantifierConstraint

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for QuantifierConstraint

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

Formats the value using the given formatter.

impl Hash for QuantifierConstraint

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 PartialEq<QuantifierConstraint> for QuantifierConstraint

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

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

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

This method tests for !=.

impl RangeBounds<usize> for QuantifierConstraint

fn start_bound(&self) -> Bound<&usize>

Start index bound.

fn end_bound(&self) -> Bound<&usize>

End index bound.

fn contains<U>(&self, item: &U) -> bool where
    T: PartialOrd<U>,
    U: PartialOrd<T> + ?Sized, 

Returns true if item is contained in the range.

impl Eq for QuantifierConstraint

impl StructuralEq for QuantifierConstraint

impl StructuralPartialEq for QuantifierConstraint