Struct CircularCodesizePlaceholderData 

pub struct CircularCodesizePlaceholderData {
    pub macro_name: String,
    pub push_opcode: PushOpcode,
    pub resolved_value: Option<usize>,
    pub measured_range: Option<(usize, usize)>,
    pub size_hint: Option<usize>,
}

Data for a circular codesize placeholder

Fields

macro_name: String

The macro name that contains this circular reference

push_opcode: PushOpcode

The push opcode to use (starts as PUSH1 and only grows until the size fits)

resolved_value: Option<usize>

The resolved macro size (None if not yet resolved)

measured_range: Option<(usize, usize)>

Code range [start, end) of the macro invocation whose size is pushed, in the same offsets as the surrounding segments. Set once that invocation is fully generated; without it the size of the whole code is pushed.

size_hint: Option<usize>

Size of the named macro from the previous compile pass, used when the code being generated does not contain the named macro, so its size cannot be measured here

Implementations

impl CircularCodesizePlaceholderData

pub fn new(macro_name: String, size_hint: Option<usize>) -> Self

Create a new unresolved circular codesize placeholder Starts with PUSH1 optimistically, may grow during resolution

pub fn size( &self, measured: impl FnOnce((usize, usize)) -> usize, total_length: usize, ) -> usize

The size this placeholder pushes: the measured invocation, else the size hint, else the whole code it is part of

pub fn resolve(&mut self, size: usize) -> usize

Resolve this codesize to a specific size

Keeps the current width if the size fits, since the surrounding code is already laid out for it. Returns the number of bytes the push data grew by.

pub fn to_hex(&self) -> String

Generate the hex string representation If resolved, returns the actual bytecode. If unresolved, returns placeholder with “cccc”

Trait Implementations

impl Clone for CircularCodesizePlaceholderData

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 CircularCodesizePlaceholderData

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

Formats the value using the given formatter.

impl Eq for CircularCodesizePlaceholderData

impl Ord for CircularCodesizePlaceholderData

fn cmp(&self, other: &Self) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

fn clamp_to<R>(self, range: R) -> Self

where Self: Sized, R: ClampBounds<Self>,

🔬This is a nightly-only experimental API. (clamp_to)

Restrict a value to a certain range.

impl PartialEq for CircularCodesizePlaceholderData

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

Equality operator ==.

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

Inequality operator !=.

impl PartialOrd for CircularCodesizePlaceholderData

fn partial_cmp(&self, other: &Self) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl StructuralPartialEq for CircularCodesizePlaceholderData

Layout

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 88 bytes