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Improve error reporting for patterns not matching opaques

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ayazhafiz 2022-02-24 23:37:33 -05:00
parent 4e27cdd21d
commit 07b1829732
7 changed files with 26 additions and 23 deletions
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4
compiler/can/src/constraint.rs
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@ -11,7 +11,7 @@ use roc_types::{subs::Variable, types::VariableDetail};
/// constraints makes them behaviorally different from unification-based constraints.
#[derive(Debug, Clone, PartialEq)]
pub enum PresenceConstraint {
IncludesTag(TagName, Vec<Type>),
IncludesTag(TagName, Vec<Type>, Region, PatternCategory),
IsOpen,
Pattern(Region, PatternCategory, PExpected<Type>),
}
@ -159,7 +159,7 @@ fn validate_help(constraint: &Constraint, declared: &Declared, accum: &mut Varia
Constraint::Present(typ, constr) => {
subtract(declared, &typ.variables_detail(), accum);
match constr {
PresenceConstraint::IncludesTag(_, tys) => {
PresenceConstraint::IncludesTag(_, tys, _, _) => {
for ty in tys {
subtract(declared, &ty.variables_detail(), accum);
}