M-Labs/nac3
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Revert "core: Do not keep unification result for function arguments"

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This reverts commit f09f3c27a5.
This commit is contained in:
David Mak 2023-12-18 10:01:23 +08:00
parent d47534e2ad
commit 6dccb343bb
2 changed files with 12 additions and 26 deletions
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26
nac3core/src/typecheck/typedef/mod.rs
View File

@ -529,12 +529,10 @@ impl Unifier {
} }
required.pop(); required.pop();
let (name, expected) = all_names.pop().unwrap(); let (name, expected) = all_names.pop().unwrap();
let snapshot = self.unification_table.get_snapshot();
self.unify_impl(expected, *t, false).map_err(|_| { self.unify_impl(expected, *t, false).map_err(|_| {
self.restore_snapshot(); self.restore_snapshot();
TypeError::new(TypeErrorKind::IncorrectArgType { name, expected, got: *t }, *loc) TypeError::new(TypeErrorKind::IncorrectArgType { name, expected, got: *t }, *loc)
})?; })?;
self.unification_table.restore_snapshot(snapshot);
} }
for (k, t) in kwargs { for (k, t) in kwargs {
if let Some(i) = required.iter().position(|v| v == k) { if let Some(i) = required.iter().position(|v| v == k) {
@ -548,12 +546,10 @@ impl Unifier {
TypeError::new(TypeErrorKind::UnknownArgName(*k), *loc) TypeError::new(TypeErrorKind::UnknownArgName(*k), *loc)
})?; })?;
let (name, expected) = all_names.remove(i); let (name, expected) = all_names.remove(i);
let snapshot = self.unification_table.get_snapshot();
self.unify_impl(expected, *t, false).map_err(|_| { self.unify_impl(expected, *t, false).map_err(|_| {
self.restore_snapshot(); self.restore_snapshot();
TypeError::new(TypeErrorKind::IncorrectArgType { name, expected, got: *t }, *loc) TypeError::new(TypeErrorKind::IncorrectArgType { name, expected, got: *t }, *loc)
})?; })?;
self.unification_table.restore_snapshot(snapshot);
} }
if !required.is_empty() { if !required.is_empty() {
self.restore_snapshot(); self.restore_snapshot();
@ -750,21 +746,18 @@ impl Unifier {
(TVar { range: tys, is_const_generic: true, .. }, TLiteral { values, .. }) => { (TVar { range: tys, is_const_generic: true, .. }, TLiteral { values, .. }) => {
assert_eq!(tys.len(), 1); assert_eq!(tys.len(), 1);
assert_eq!(values.len(), 1);
let primitives = &self.primitive_store let primitives = &self.primitive_store
.expect("Expected PrimitiveStore to be present"); .expect("Expected PrimitiveStore to be present");
let ty = tys[0]; let ty = tys[0];
let value= &values[0];
for value in values {
let value_ty = value.get_type(primitives, self); let value_ty = value.get_type(primitives, self);
if self.unioned(ty, value_ty) { // If the types don't match, try to implicitly promote integers
self.set_a_to_b(a, b); if !self.unioned(ty, value_ty) {
return Ok(())
}
// The types don't match, try to implicitly promote integers
let num_val = match *value { let num_val = match *value {
SymbolValue::I32(v) => v as i128, SymbolValue::I32(v) => v as i128,
SymbolValue::I64(v) => v as i128, SymbolValue::I64(v) => v as i128,
@ -785,19 +778,20 @@ impl Unifier {
false false
}; };
if can_convert { if !can_convert {
self.set_a_to_b(a, b); return self.incompatible_types(a, b)
return Ok(())
} }
} }
return self.incompatible_types(a, b) self.set_a_to_b(a, b);
} }
(TLiteral { values: val1, .. }, TLiteral { values: val2, .. }) => { (TLiteral { values: val1, .. }, TLiteral { values: val2, .. }) => {
if val2.iter().any(|val| !val1.contains(val)) { for (v1, v2) in zip(val1, val2) {
if v1 != v2 {
return self.incompatible_types(a, b) return self.incompatible_types(a, b)
} }
}
self.set_a_to_b(a, b); self.set_a_to_b(a, b);
} }

8
nac3standalone/demo/src/const_generic.py
View File

@ -16,9 +16,6 @@ class HybridGenericClass2(Generic[A, T]):
class HybridGenericClass3(Generic[T, A, B]): class HybridGenericClass3(Generic[T, A, B]):
pass pass
def make_generic_1() -> ConstGenericClass[Literal[1]]:
return ...
def make_generic_2() -> ConstGenericClass[Literal[2]]: def make_generic_2() -> ConstGenericClass[Literal[2]]:
return ... return ...
@ -31,9 +28,6 @@ def make_hybrid_class_2_int32() -> HybridGenericClass2[Literal[2], int32]:
def make_hybrid_class_i32_0_1() -> HybridGenericClass3[int32, Literal[0], Literal[1]]: def make_hybrid_class_i32_0_1() -> HybridGenericClass3[int32, Literal[0], Literal[1]]:
return ... return ...
def consume_generic_1_or_2(instance: ConstGenericClass[Literal[1, 2]]):
pass
def consume_generic_2(instance: ConstGenericClass[Literal[2]]): def consume_generic_2(instance: ConstGenericClass[Literal[2]]):
pass pass
@ -48,8 +42,6 @@ def consume_hybrid_class_i32_0_1(instance: HybridGenericClass3[int32, Literal[0]
def f(): def f():
consume_generic_2(make_generic_2()) consume_generic_2(make_generic_2())
consume_generic_1_or_2(make_generic_1())
consume_generic_1_or_2(make_generic_2())
consume_generic2_1_2(make_generic2_1_2()) consume_generic2_1_2(make_generic2_1_2())
consume_hybrid_class_2_i32(make_hybrid_class_2_int32()) consume_hybrid_class_2_i32(make_hybrid_class_2_int32())
consume_hybrid_class_i32_0_1(make_hybrid_class_i32_0_1()) consume_hybrid_class_i32_0_1(make_hybrid_class_i32_0_1())