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There was no way to make a java compilation unit.
Now there is.
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Go back to using globalError to report when a stub's info is referenced,
and only throw the MissingRequirementError when compilation really
must abort due to having a StubTermSymbol in a place where a
StubClassSymbol would have been a better choice.
This situation arises when an entire package is missing from the
classpath, as was the case in the reported bug.
Adds `StoreReporterDirectTest`, which buffers messages issued
during compilation for more structured interrogation. Use this
in two test for manifests -- these tests were using a crude means
of grepping compiler console output to focus on the relevant output,
but this approach was insufficient with the new multi-line error
message emitted as part of this change.
Also used that base test class to add two new tests: one for
the reported error (package missing), and another for a simpler
error (class missing). The latter test shows how stub symbols
allow code to compile if it doesn't the subset of signatures
in some type that refer to a missing class.
Gave the INFO/WARNING/ERROR members of Reporter sensible
toString implementations; they inherit from Enumeration#Value
in an unusual manner (why?) that means the built in toString of
Enumeration printed `Severity@0`.
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Now sorely needed since files with CRLF endings but
an LF attribute which are checked into the repo will
aggressively cause dirty git status on unix.
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Since recently type tags have relocated to scala-reflect.jar,
meaning that they are no longer always on library classpath.
In the compiler we do have code that generates type tags, and this code
is bound to fail if scala-reflect.jar isn't there.
I though this wouldn't be a problem, because type tag materialization
is only going to be triggered by users explicitly requesting a type tag.
That's generally true, but I overlooked a corner case. Since we provide
manifest <-> type tag compatibility, manifest lookup can sometimes trigger
tag lookup, which might result in tag synthesis, which blows up like this:
http://groups.google.com/group/scala-internals/browse_thread/thread/166ce4b71b7c46bb
This commit also ensures that type tag generation/interop doesnt sneak into the
code of the libraries that don't have scala-reflect.jar on their classpath.
For details refer to the discussion at scala-internals:
http://groups.google.com/group/scala-internals/browse_thread/thread/72f6ce3010f4d8
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