Enum Type 

pub enum Type {
    Int,
    Float,
    Bool,
    Unit,
}

The type of a value in the IR.

This is the IR’s own machine-level type system, deliberately small and independent of any source language. A front-end lowering its program decides how its source types map onto these — a 32-bit and a 64-bit source integer both lower to Type::Int here, a source bool to Type::Bool, and a value that produces nothing (a statement, a void call) to Type::Unit. The validator uses these types to reject operations applied to the wrong kind of value, so the set is kept to the four cases an arithmetic-and-control-flow core actually needs.

Wider machine types (sized integers, vectors, pointers) are a deliberate later addition: a new variant is an additive, non-breaking change.

Examples

use ir_lang::Type;

// Types are small, `Copy`, and print as their lowercase name.
assert_eq!(Type::Int.to_string(), "int");
assert_eq!(Type::Bool.to_string(), "bool");
assert_ne!(Type::Int, Type::Float);

Variants

Int

A signed integer value.

Float

A floating-point value.

Bool

A boolean value, as produced by a comparison or a logical operation.

Unit

The absence of a value — the result type of an operation that exists only for its effect, and the return type of a function that returns nothing.

Implementations

impl Type

pub const fn is_numeric(self) -> bool

Returns true for the numeric types (Int and Float) that arithmetic and ordering operations accept.

Examples

use ir_lang::Type;

assert!(Type::Int.is_numeric());
assert!(Type::Float.is_numeric());
assert!(!Type::Bool.is_numeric());
assert!(!Type::Unit.is_numeric());

Trait Implementations

impl Clone for Type

fn clone(&self) -> Type

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Type

impl Debug for Type

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Type

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for Type

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

Formats the value using the given formatter.

impl Eq for Type

impl Hash for Type

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 Type

fn cmp(&self, other: &Type) -> 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.

impl PartialEq for Type

fn eq(&self, other: &Type) -> 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 PartialOrd for Type

fn partial_cmp(&self, other: &Type) -> 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 Serialize for Type

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for Type