Struct Signature 

pub struct Signature {
    pub params: Vec<Type>,
    pub returns: Vec<Type>,
    pub conv: CallConv,
}

A function signature: parameter types, return types, and a calling convention.

A function may return any number of values (zero for “returns nothing”). Signatures are interned per module (Module::intern_signature), so two equal signatures share one SigId.

Examples

use ir_lang::{CallConv, Signature, Type};

let sig = Signature::new(&[Type::I64, Type::Ptr], &[Type::Bool]).with_conv(CallConv::C);
assert_eq!(sig.params, [Type::I64, Type::Ptr]);
assert_eq!(sig.to_string(), "(i64, ptr) -> (bool) c");

Fields

params: Vec<Type>

Parameter types, in order.

returns: Vec<Type>

Return types, in order.

conv: CallConv

The calling convention.

Implementations

impl Signature

pub fn new(params: &[Type], returns: &[Type]) -> Signature

A signature with the Fast convention.

Examples

use ir_lang::{Signature, Type};

let s = Signature::new(&[], &[Type::I32]);
assert!(s.params.is_empty());

pub fn with_conv(self, conv: CallConv) -> Signature

The same signature with a different calling convention.

Examples

use ir_lang::{CallConv, Signature};

assert_eq!(Signature::new(&[], &[]).with_conv(CallConv::Win64).conv, CallConv::Win64);

Trait Implementations

impl Clone for Signature

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 Signature

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

Formats the value using the given formatter.

impl Default for Signature

fn default() -> Self

Returns the “default value” for a type.

impl Display for Signature

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

Formats the value using the given formatter.

impl Eq for Signature

impl Hash for Signature

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 Signature

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 Signature

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

Equality operator ==.

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

Inequality operator !=.

impl PartialOrd for Signature

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 Signature