Enum StringConstraint 

pub enum StringConstraint {
    Always,
    Never,
    Regex {
        pattern: RegexPattern,
    },
    LengthRange {
        min: u32,
        max: u32,
    },
    NonEmpty,
    InSet {
        values: BTreeSet<String>,
    },
    NotInSet {
        values: BTreeSet<String>,
    },
    And {
        children: Vec<Self>,
    },
    Or {
        children: Vec<Self>,
    },
    Not {
        child: Box<Self>,
    },
}

String-value constraint.

Variants

Always

Always satisfied.

Never

Never satisfied.

Regex

Value must match this regex.

Fields

pattern: RegexPattern

The compiled pattern.

LengthRange

min <= value.len() <= max (byte length).

Fields

min: u32

Inclusive lower bound on byte length.

max: u32

Inclusive upper bound on byte length.

NonEmpty

!value.is_empty().

InSet

Value is in this set.

Fields

values: BTreeSet<String>

The permitted values.

NotInSet

Value is not in this set.

Fields

values: BTreeSet<String>

The forbidden values.

And

All children must hold.

Fields

children: Vec<Self>

Conjuncts.

Or

At least one child must hold.

Fields

children: Vec<Self>

Disjuncts.

Not

Child must not hold.

Fields

child: Box<Self>

The negated child.

Implementations

impl StringConstraint

pub fn test(&self, value: &str) -> bool

Test a candidate value.

pub fn and(self, rhs: Self) -> Self

Conjunction, flattening nested And.

pub fn or(self, rhs: Self) -> Self

Disjunction, flattening nested Or.

pub fn canonicalize(self) -> Self

Same rule set as IntConstraint::canonicalize.

pub fn canonical_bytes(&self) -> Vec<u8>

Canonical byte form of this constraint as written.

pub fn fingerprint(&self) -> Fingerprint

Canonical fingerprint — auto-canonicalises first. Regex leaves hash their source pattern (not the compiled automaton).

Trait Implementations

impl Clone for StringConstraint

fn clone(&self) -> StringConstraint

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for StringConstraint

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for StringConstraint

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Hash for StringConstraint

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 Not for StringConstraint

type Output = StringConstraint

The resulting type after applying the ! operator.

fn not(self) -> Self

Performs the unary ! operation.

impl PartialEq for StringConstraint

fn eq(&self, other: &StringConstraint) -> 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 Serialize for StringConstraint

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Eq for StringConstraint

impl StructuralPartialEq for StringConstraint