Struct IntConv 

pub struct IntConv(/* private fields */);

The modifier byte of Inst::IntCast: source type, destination type, and the overflow policy for values that do not fit.

Layout: bits 0–2 source IntTy, bits 3–5 destination IntTy, bits 6–7 Overflow.

Examples

use bytecode_lang::{IntConv, IntTy, Overflow};

let c = IntConv::new(IntTy::I64, IntTy::U8, Overflow::Wrap);
assert_eq!((c.from(), c.to(), c.overflow()), (IntTy::I64, IntTy::U8, Overflow::Wrap));
assert_eq!(c.to_string(), "i64.u8.wrap");
assert_eq!(IntConv::from_bits(c.bits()), Some(c));

Implementations

impl IntConv

pub const fn new(from: IntTy, to: IntTy, overflow: Overflow) -> Self

A conversion from from to to under overflow.

Examples

use bytecode_lang::{IntConv, IntTy, Overflow};

let c = IntConv::new(IntTy::U32, IntTy::I32, Overflow::Error);
assert_eq!(c.to_string(), "u32.i32");

pub const fn from(self) -> IntTy

The source type.

Examples

use bytecode_lang::{IntConv, IntTy, Overflow};

assert_eq!(IntConv::new(IntTy::I8, IntTy::I16, Overflow::Error).from(), IntTy::I8);

pub const fn to(self) -> IntTy

The destination type.

Examples

use bytecode_lang::{IntConv, IntTy, Overflow};

assert_eq!(IntConv::new(IntTy::I8, IntTy::I16, Overflow::Error).to(), IntTy::I16);

pub const fn overflow(self) -> Overflow

The overflow policy.

Examples

use bytecode_lang::{IntConv, IntTy, Overflow};

let c = IntConv::new(IntTy::I64, IntTy::I8, Overflow::Trap);
assert_eq!(c.overflow(), Overflow::Trap);

pub const fn bits(self) -> u8

The packed byte.

Examples

use bytecode_lang::{IntConv, IntTy, Overflow};

assert_eq!(IntConv::new(IntTy::I8, IntTy::I8, Overflow::Error).bits(), 0);

pub const fn from_bits(bits: u8) -> Option<Self>

Unpacks the byte. Every byte names a conversion, so this returns Some for all 256 values in format version 1. (promote decodes, but int_cast always writes a statically typed register, so the builder and the verifier refuse it.)

Examples

use bytecode_lang::{IntConv, Overflow};

assert_eq!(IntConv::from_bits(0b1100_0000).map(|c| c.overflow()), Some(Overflow::Promote));

Trait Implementations

impl Clone for IntConv

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for IntConv

impl Debug for IntConv

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

Formats the value using the given formatter.

impl Display for IntConv

from.to, then .wrap or .trap when the policy is not error.

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

Formats the value using the given formatter.

impl Eq for IntConv

impl Hash for IntConv

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 IntConv

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 IntConv

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

Equality operator ==.

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

Inequality operator !=.

impl PartialOrd for IntConv

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 IntConv