Struct Fuel 

pub struct Fuel { /* private fields */ }

What a pass has left.

A pass asks Fuel::take immediately before each transformation and does nothing when the answer is no. A pass that asks after transforming, or that transforms without asking, is what the fuel test in crate::pipeline exists to catch.

Implementations

impl Fuel

pub const fn unlimited() -> Self

Fuel that never runs out, which is what every pass gets unless -fpass-fuel says otherwise.

pub const fn of(count: u32) -> Self

Fuel for exactly this many transformations.

pub fn take(&mut self) -> bool

Whether one more transformation is allowed, counting it when it is.

The counting happens here rather than at the transformation because a pass that has to remember to do two things does one of them.

pub const fn spent(self) -> u32

How many transformations have been taken.

pub const fn is_empty(self) -> bool

Whether the pass has run out, which is only ever true when a limit was set.

Trait Implementations

impl Clone for Fuel

fn clone(&self) -> Fuel

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Fuel

impl Debug for Fuel

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

Formats the value using the given formatter.

impl Default for Fuel

fn default() -> Self

Returns the “default value” for a type.

impl Display for Fuel

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

Formats the value using the given formatter.

impl Eq for Fuel

impl PartialEq for Fuel

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Fuel