Hardening scope lookup against wrongness.

Calls to scope.lookup have until this commit discarded any symbols
after the first, even at the same nesting depth. Some call sites which
did this were innocuous, because they were only checking if
lookup(name) != NoSymbol. To make this clearer in the future, I added
a method which communicates the intent: containsName. And I added an
even more relevant one, which falls between "lookup" and "lookupAll".

  def lookupUnshadowedEntries(name: Name)

That method will be put to work in symbol lookup, allowing us
to put to bed methods like "correctForPackageObject".

0 files changed, 0 insertions, 0 deletions