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fix: foldLeft when type checking, rather than foldRight which is unintuitive

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Gleb Koval
2025-02-07 14:16:50 +00:00
parent 68e4762b37
commit 319fa606d9
1 changed files with 3 additions and 3 deletions
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6
src/main/wacc/typeChecker.scala
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@@ -159,7 +159,7 @@ object typeChecker {
ctx.typeOf(id).satisfies(constraint, id.pos) ctx.typeOf(id).satisfies(constraint, id.pos)
case ArrayElem(id, indices) => case ArrayElem(id, indices) =>
val arrayTy = ctx.typeOf(id) val arrayTy = ctx.typeOf(id)
val elemTy = indices.toList.foldRight(arrayTy) { (elem, acc) => val elemTy = indices.foldLeft(arrayTy) { (acc, elem) =>
checkValue(elem, Constraint.Is(KnownType.Int, "array index must be an int")) checkValue(elem, Constraint.Is(KnownType.Int, "array index must be an int"))
acc match { acc match {
case KnownType.Array(innerTy) => innerTy case KnownType.Array(innerTy) => innerTy
@@ -173,10 +173,10 @@ object typeChecker {
case Parens(expr) => checkValue(expr, constraint) case Parens(expr) => checkValue(expr, constraint)
case l @ ArrayLiter(elems) => case l @ ArrayLiter(elems) =>
KnownType KnownType
.Array(elems.foldRight[SemType](?) { case (elem, acc) => .Array(elems.foldLeft[SemType](?) { case (acc, elem) =>
checkValue( checkValue(
elem, elem,
Constraint.IsSymmetricCompatible(acc, "array elements must have the same type") Constraint.IsSymmetricCompatible(acc, s"array elements must have the same type")
) )
}) })
.satisfies(constraint, l.pos) .satisfies(constraint, l.pos)