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author | Simon Ochsenreither <simon@ochsenreither.de> | 2013-07-01 13:29:06 +0200 |
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committer | Simon Ochsenreither <simon@ochsenreither.de> | 2013-07-01 13:29:06 +0200 |
commit | f5a18b5afaf866134a49af167db707a52044ea99 (patch) | |
tree | 9199c28bf88a73b4f4373dfbecf5495ed3662764 /test/files/pos | |
parent | bfda11426f9c908831489bb9173bc88dec5c4ce8 (diff) | |
download | scala-f5a18b5afaf866134a49af167db707a52044ea99.tar.gz scala-f5a18b5afaf866134a49af167db707a52044ea99.tar.bz2 scala-f5a18b5afaf866134a49af167db707a52044ea99.zip |
SI-7591 Move command-line spec usage demo to tests
Diffstat (limited to 'test/files/pos')
-rw-r--r-- | test/files/pos/t7591/Demo.scala | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/test/files/pos/t7591/Demo.scala b/test/files/pos/t7591/Demo.scala new file mode 100644 index 0000000000..696d53585b --- /dev/null +++ b/test/files/pos/t7591/Demo.scala @@ -0,0 +1,83 @@ +/* NEST (New Scala Test) + * Copyright 2007-2013 LAMP/EPFL + * @author Paul Phillips + */ + +import scala.tools.cmd._ + +/** A sample command specification for illustrative purposes. + * First take advantage of the meta-options: + * + * // this command creates an executable runner script "demo" + * % scala scala.tools.cmd.Demo --self-update demo + * + * // this one creates and sources a completion file - note backticks + * % `./demo --bash` + * + * // and now you have a runner with working completion + * % ./demo --<tab> + * --action --defint --int + * --bash --defstr --str + * --defenv --self-update --unary + * + * The normal option configuration is plausibly self-explanatory. + */ +trait DemoSpec extends Spec with Meta.StdOpts with Interpolation { + lazy val referenceSpec = DemoSpec + lazy val programInfo = Spec.Info("demo", "Usage: demo [<options>]", "scala.tools.cmd.Demo") + + help("""Usage: demo [<options>]""") + heading("Unary options:") + + val optIsUnary = "unary" / "a unary option" --? ; + ("action" / "a body which may be run") --> println("Hello, I am the --action body.") + + heading("Binary options:") + val optopt = "str" / "an optional String" --| + val optoptInt = ("int" / "an optional Int") . --^[Int] + val optEnv = "defenv" / "an optional String" defaultToEnv "PATH" + val optDefault = "defstr" / "an optional String" defaultTo "default" + val optDefaultInt = "defint" / "an optional Int" defaultTo -1 + val optExpand = "alias" / "an option which expands" expandTo ("--int", "15") +} + +object DemoSpec extends DemoSpec with Property { + lazy val propMapper = new PropertyMapper(DemoSpec) + + type ThisCommandLine = SpecCommandLine + def creator(args: List[String]) = + new SpecCommandLine(args) { + override def errorFn(msg: String) = { println("Error: " + msg) ; sys.exit(0) } + } +} + +class Demo(args: List[String]) extends { + val parsed = DemoSpec(args: _*) +} with DemoSpec with Instance { + import java.lang.reflect._ + + def helpMsg = DemoSpec.helpMsg + def demoSpecMethods = this.getClass.getMethods.toList + private def isDemo(m: Method) = (m.getName startsWith "opt") && !(m.getName contains "$") && (m.getParameterTypes.isEmpty) + + def demoString(ms: List[Method]) = { + val longest = ms map (_.getName.length) max + val formatStr = " %-" + longest + "s: %s" + val xs = ms map (m => formatStr.format(m.getName, m.invoke(this))) + + xs mkString ("Demo(\n ", "\n ", "\n)\n") + } + + override def toString = demoString(demoSpecMethods filter isDemo) +} + +object Demo { + def main(args: Array[String]): Unit = { + val runner = new Demo(args.toList) + + if (args.isEmpty) + println(runner.helpMsg) + + println(runner) + } +} |