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use borrow borrow signature

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J.Teeuwissen 2023-04-06 10:38:51 +02:00
parent c44da622e5
commit d806ddd190
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2 changed files with 12 additions and 124 deletions
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21
crates/compiler/mono/src/borrow.rs
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@ -12,9 +12,6 @@ use roc_collections::ReferenceMatrix;
use roc_module::low_level::LowLevel;
use roc_module::symbol::Symbol;
pub(crate) const OWNED: bool = false;
pub(crate) const BORROWED: bool = true;
#[derive(Clone, Copy, Debug, PartialEq, Eq)]
pub enum Ownership {
Owned,
@ -471,11 +468,11 @@ impl<'a> BorrowInfState<'a> {
/// This looks at an application `f x1 x2 x3`
/// If the parameter (based on the definition of `f`) is owned,
/// then the argument must also be owned
fn own_args_using_bools(&mut self, xs: &[Symbol], ps: &[bool]) {
fn own_args_using_bools(&mut self, xs: &[Symbol], ps: &[Ownership]) {
debug_assert_eq!(xs.len(), ps.len());
for (x, borrow) in xs.iter().zip(ps.iter()) {
if !borrow {
for (x, ownership) in xs.iter().zip(ps.iter()) {
if matches!(ownership, Ownership::Owned) {
self.own_var(*x);
}
}
@ -926,22 +923,22 @@ impl<'a> BorrowInfState<'a> {
}
}
pub fn foreign_borrow_signature(arena: &Bump, arity: usize) -> &[bool] {
pub fn foreign_borrow_signature(arena: &Bump, arity: usize) -> &[Ownership] {
// NOTE this means that Roc is responsible for cleaning up resources;
// the host cannot (currently) take ownership
let all = bumpalo::vec![in arena; BORROWED; arity];
let all = bumpalo::vec![in arena; Ownership::Borrowed; arity];
all.into_bump_slice()
}
pub fn lowlevel_borrow_signature(arena: &Bump, op: LowLevel) -> &[bool] {
pub fn lowlevel_borrow_signature(arena: &Bump, op: LowLevel) -> &[Ownership] {
use LowLevel::*;
// TODO is true or false more efficient for non-refcounted layouts?
let irrelevant = OWNED;
let irrelevant = Ownership::Owned;
let function = irrelevant;
let closure_data = irrelevant;
let owned = OWNED;
let borrowed = BORROWED;
let owned = Ownership::Owned;
let borrowed = Ownership::Borrowed;
// Here we define the borrow signature of low-level operations
//