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author | Paul Phillips <paulp@improving.org> | 2012-07-06 12:48:52 -0700 |
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committer | Paul Phillips <paulp@improving.org> | 2012-07-06 14:20:15 -0700 |
commit | 724b0dc71f1f8f91b995d01e9e027789f54ecdfe (patch) | |
tree | 5155c036949eb43d5bbb661bbbc5d18ffe3cc987 /test/files/run/reflection-names.scala | |
parent | c632aaca8bdf1dc7c8eac24f5dd0acb18b4683b6 (diff) | |
download | scala-724b0dc71f1f8f91b995d01e9e027789f54ecdfe.tar.gz scala-724b0dc71f1f8f91b995d01e9e027789f54ecdfe.tar.bz2 scala-724b0dc71f1f8f91b995d01e9e027789f54ecdfe.zip |
Implicits to encourage more Name-dropping.
This creates implicits in cakes across the land from:
String => TermName
String => TypeName
And also from:
Name => NameOps[Name] // lower priority
TermName => NameOps[TermName]
TypeName => NameOps[TypeName]
What this is all about, using "drop" as a motivating example,
is that these should all work:
"abc" drop 1 // "bc": String
("abc": TermName) drop 1 // "bc": TermName
("abc": TypeName) drop 1 // "bc": TypeName
(("abc": TypeName): Name) drop 1 // "bc": Name
But this should not:
("bc": Name) // ambiguity error
This requires drop not being directly on Name; peer implicits
from String => TermName and String => TypeName; implicit
classes to install drop on TermName and TypeName; and a lower
priority implicit class to allow ops on Names.
Review by @xeno.by .
Diffstat (limited to 'test/files/run/reflection-names.scala')
-rw-r--r-- | test/files/run/reflection-names.scala | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/test/files/run/reflection-names.scala b/test/files/run/reflection-names.scala new file mode 100644 index 0000000000..2433c84813 --- /dev/null +++ b/test/files/run/reflection-names.scala @@ -0,0 +1,15 @@ +import scala.tools.nsc._ + +object Test { + val global = new Global(new Settings()) + import global._ + + val x1 = "abc" drop 1 // "bc": String + val x2 = ("abc": TermName) drop 1 // "bc": TermName + val x3 = ("abc": TypeName) drop 1 // "bc": TypeName + val x4 = (("abc": TypeName): Name) drop 1 // "bc": Name + + def main(args: Array[String]): Unit = { + List(x1, x2, x3, x4) foreach (x => println(x.getClass.getName, x)) + } +} |