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Refine atoms computation on intersection types #8442

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Merged
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Mar 5, 2020
Merged

Refine atoms computation on intersection types #8442

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7 changes: 5 additions & 2 deletions compiler/src/dotty/tools/dotc/core/Atoms.scala
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Original file line number Diff line number Diff line change
Expand Up @@ -20,8 +20,11 @@ enum Atoms:
case Range(lo1, hi1) =>
that match
case Range(lo2, hi2) => Range(lo1 & lo2, hi1 & hi2)
case Unknown => this
case Unknown => that
case Unknown => Range(Set.empty, hi1)
case Unknown =>
that match
case Range(lo2, hi2) => Range(Set.empty, hi2)
case Unknown => Unknown

def | (that: Atoms): Atoms = this match
case Range(lo1, hi1) =>
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