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Merge pull request #2645 from rtfeldman/solve-fully-tail-recursive

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make solve fully tail recursive
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hafiz 2022-03-05 14:35:39 -05:00 • committed by GitHub
commit cad02d878c
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3 changed files with 277 additions and 215 deletions
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7
compiler/can/src/constraint.rs
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@ -259,16 +259,15 @@ impl Constraints {
Slice::new(start as _, length as _)
}
fn def_types_slice<I>(&mut self, it: I) -> Slice<(Symbol, Loc<Type>)>
fn def_types_slice<I>(&mut self, it: I) -> Slice<(Symbol, Loc<Index<Type>>)>
where
I: IntoIterator<Item = (Symbol, Loc<Type>)>,
{
let start = self.def_types.len();
for (symbol, loc_type) in it {
let type_index = Index::new(self.types.len() as _);
let Loc { region, value } = loc_type;
self.types.push(value);
let type_index = Index::push_new(&mut self.types, value);
self.def_types.push((symbol, Loc::at(region, type_index)));
}
@ -469,7 +468,7 @@ pub enum Constraint {
pub struct LetConstraint {
pub rigid_vars: Slice<Variable>,
pub flex_vars: Slice<Variable>,
pub def_types: Slice<(Symbol, Loc<Type>)>,
pub def_types: Slice<(Symbol, Loc<Index<Type>>)>,
pub defs_and_ret_constraint: Index<(Constraint, Constraint)>,
}