Struct SessionLimits 

pub struct SessionLimits {
    pub max_depth: usize,
    pub max_aggregate_elements: usize,
}

Recursion budget for chained IFC references.

IFC places no normative limit on placement or mapped-item nesting, so a budget is the only way to terminate on malformed input that is deep rather than strictly cyclic.

Fields

max_depth: usize

Maximum simultaneously active entities in one chain.

max_aggregate_elements: usize

Maximum elements one file-declared aggregate may materialize.

Implementations

impl SessionLimits

pub const DEFAULT_MAX_DEPTH: usize = 64

Depth budget used when a caller states no preference.

Real exporter output nests placements a few levels deep; 64 is far above observed depth while still terminating quickly on bad input.

pub const DEFAULT_MAX_AGGREGATE_ELEMENTS: usize = 16_777_216

Aggregate-element budget used when a caller states no preference.

Sized against the largest thing a legitimate file plausibly declares: a dense triangulated face set of ~5.5M triangles expands to 16M indices, and the largest observed knot vectors are four orders of magnitude smaller. 16M f64 is ~128 MiB, which bounds a single aggregate to something a workstation survives while still refusing the billion-element declarations that motivate this budget.

This is a refusal threshold, never a truncation point: an aggregate over the limit produces crate::GeometryError::AggregateTooLarge naming the entity, and no geometry is emitted for it.

Trait Implementations

impl Clone for SessionLimits

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for SessionLimits

impl Debug for SessionLimits

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

Formats the value using the given formatter.

impl Default for SessionLimits

fn default() -> Self

Returns the “default value” for a type.

impl Eq for SessionLimits

impl PartialEq for SessionLimits

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for SessionLimits