Struct CallShape 

pub struct CallShape {
    pub args: Vec<ArgKind>,
}

The argument layout of a dcall_shape call site: one entry per window register (dst+1 ..= dst+len), saying whether that argument is positional, named, or spread. Shapes live in a per-function table and are named by a ShapeId.

Examples

use bytecode_lang::{ArgKind, CallShape, StrId};

// f($a, ...$rest, flag: true)
let shape = CallShape::new(vec![ArgKind::Positional, ArgKind::Spread, ArgKind::Named(StrId(2))]);
assert!(shape.validate().is_ok());
assert_eq!(shape.to_string(), "(_, ..., s2:)");

Fields

args: Vec<ArgKind>

The arguments, in window order.

Implementations

impl CallShape

pub fn new(args: Vec<ArgKind>) -> Self

A shape of these arguments.

Examples

use bytecode_lang::{ArgKind, CallShape};

assert_eq!(CallShape::new(vec![ArgKind::Positional]).args.len(), 1);

pub fn validate(&self) -> Result<(), ShapeError>

Checks the shape: at most 255 arguments, no positional argument or spread after a named argument or named spread, no repeated name.

Errors

The first rule broken, as a ShapeError.

Examples

use bytecode_lang::{ArgKind, CallShape, ShapeError, StrId};

let twice = CallShape::new(vec![ArgKind::Named(StrId(1)), ArgKind::Named(StrId(1))]);
assert_eq!(twice.validate(), Err(ShapeError::DuplicateName { index: 1 }));

Trait Implementations

impl Clone for CallShape

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 CallShape

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

Formats the value using the given formatter.

impl Default for CallShape

fn default() -> Self

Returns the “default value” for a type.

impl Display for CallShape

(_, s3:, ...).

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

Formats the value using the given formatter.

impl Eq for CallShape

impl Hash for CallShape

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for CallShape

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 CallShape

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

Equality operator ==.

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

Inequality operator !=.

impl PartialOrd for CallShape

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 CallShape