Struct WhereRule 

#[non_exhaustive]
pub struct WhereRule {
    pub label: String,
    pub expression: String,
}

One WHERE rule: a named constraint an instance must satisfy.

The bundled tables carry the label only; Self::expression is empty for them (the expressions are CC BY-ND schema text, see data/NOTICE.md). A schema parsed from EXPRESS source with the express feature keeps the whitespace-normalised expression.

Fields (Non-exhaustive)

Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.

label: String

Rule label as declared, e.g. CurveIs3D.

expression: String

Constraint expression as written, or empty when not recorded.

Implementations

impl WhereRule

pub fn new(label: impl Into<String>, expression: impl Into<String>) -> Self

Creates a rule from its label and expression text.

Trait Implementations

impl Clone for WhereRule

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for WhereRule

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

Formats the value using the given formatter.

impl Eq for WhereRule

impl PartialEq for WhereRule

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for WhereRule