Struct Attribute 

#[non_exhaustive]
pub struct Attribute {
    pub name: String,
    pub type_name: String,
    pub optional: bool,
    pub aggregate: bool,
    pub aggregation: Vec<Aggregation>,
}

One explicit positional attribute declared by an entity.

#[non_exhaustive]: build one with Attribute::new and the builder methods. Further facts about a declaration are added as new fields without breaking existing readers.

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.

name: String

Declared attribute name.

type_name: String

Declared scalar type, or the innermost element type of an aggregate: IfcLengthMeasure for LIST [1:?] OF LIST [3:3] OF IfcLengthMeasure.

optional: bool

Whether OPTIONAL was present.

aggregate: bool

Whether a LIST, SET, ARRAY, or BAG wrapper was present.

aggregation: Vec<Aggregation>

Aggregation levels with their bounds, outermost first; empty for a scalar. A table written before bounds were recorded (artifact format 1 or 2) has aggregate set and this empty.

Implementations

impl Attribute

pub fn new(name: impl Into<String>, type_name: impl Into<String>) -> Self

Creates a required scalar attribute.

pub const fn optional(self) -> Self

Marks the attribute as optional.

pub const fn aggregate(self) -> Self

Marks the attribute as an aggregate without recording its shape.

Prefer Self::with_aggregation, which records kind and bounds.

pub fn with_aggregation(self, aggregation: Aggregation) -> Self

Wraps the type in one more aggregation level, inside any already added: call it outermost first. Also sets Self::aggregate.

Trait Implementations

impl Clone for Attribute

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 Attribute

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

Formats the value using the given formatter.

impl Eq for Attribute

impl PartialEq for Attribute

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Attribute