Struct MacroExpansionLimits 

pub struct MacroExpansionLimits {
    pub max_depth: usize,
    pub max_steps: usize,
}

Bounds that stop runaway macro expansion.

Fields

max_depth: usize

Maximum recursive expansion depth.

max_steps: usize

Maximum number of expansion steps charged against the budget.

Trait Implementations

impl Clone for MacroExpansionLimits

fn clone(&self) -> MacroExpansionLimits

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for MacroExpansionLimits

impl Debug for MacroExpansionLimits

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

Formats the value using the given formatter.

impl Default for MacroExpansionLimits

fn default() -> Self

Returns the “default value” for a type.

impl Eq for MacroExpansionLimits

impl PartialEq for MacroExpansionLimits

fn eq(&self, other: &MacroExpansionLimits) -> 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 StructuralPartialEq for MacroExpansionLimits