Enum Predicate 

pub enum Predicate<_Value: NestedValue = IOValue> {
    Selector(Box<Selector<_Value>>),
    Not {
        pred: Box<Predicate<_Value>>,
    },
    Or {
        preds: Vec<Predicate<_Value>>,
    },
    And {
        preds: Vec<Predicate<_Value>>,
    },
}

Variants

Selector(Box<Selector<_Value>>)

Not

Fields

pred: Box<Predicate<_Value>>

Or

Fields

preds: Vec<Predicate<_Value>>

And

Fields

preds: Vec<Predicate<_Value>>

Implementations

impl Predicate

pub fn compile(&self) -> Result<CompiledPredicate, CompilationError>

pub fn exec( &self, ctxt: &mut Context<'_>, value: &IOValue, ) -> Result<bool, CompilationError>

Trait Implementations

impl<_Value: Clone + NestedValue> Clone for Predicate<_Value>

fn clone(&self) -> Predicate<_Value>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<_Value: Debug + NestedValue> Debug for Predicate<_Value>

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

Formats the value using the given formatter.

impl<_Value: NestedValue> Deserialize<_Value> for Predicate<_Value>

fn deserialize<'de, R: Reader<'de, _Value>>( r: &mut R, ) -> Result<Self, ParseError>

impl<_Value: NestedValue> Domain for Predicate<_Value>

fn debug_encode<W>(&self, w: &mut W) -> Result<(), Error>

where W: Writer,

impl<_Value: Hash + NestedValue> Hash for Predicate<_Value>

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, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl<_Value: Ord + NestedValue> Ord for Predicate<_Value>

fn cmp(&self, other: &Predicate<_Value>) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl<'a, _L: Copy + Into<&'a Language<_Value>>, _Value: NestedValue + 'a> Parse<_L, _Value> for Predicate<_Value>

fn parse(_ctxt: _L, value: &_Value) -> Result<Self, ParseError>

Decode the given value (using auxiliary structure from the language instance) to produce an instance of Self.

impl<_Value: PartialEq + NestedValue> PartialEq for Predicate<_Value>

fn eq(&self, other: &Predicate<_Value>) -> 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<_Value: PartialOrd + NestedValue> PartialOrd for Predicate<_Value>

fn partial_cmp(&self, other: &Predicate<_Value>) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl<'a, _L: Copy + Into<&'a Language<_Value>>, _Value: NestedValue + 'a> Unparse<_L, _Value> for Predicate<_Value>

fn unparse(&self, _ctxt: _L) -> _Value

Encode self into a Value (using auxiliary structure from the language instance).

impl<_Value: Eq + NestedValue> Eq for Predicate<_Value>

impl<_Value: NestedValue> StructuralPartialEq for Predicate<_Value>