diff options
Diffstat (limited to 'src/compiler/scala/tools/nsc/settings/MutableSettings.scala')
| -rw-r--r-- | src/compiler/scala/tools/nsc/settings/MutableSettings.scala | 52 |
1 files changed, 37 insertions, 15 deletions
diff --git a/src/compiler/scala/tools/nsc/settings/MutableSettings.scala b/src/compiler/scala/tools/nsc/settings/MutableSettings.scala index 11cde935f2..40aabb0df1 100644 --- a/src/compiler/scala/tools/nsc/settings/MutableSettings.scala +++ b/src/compiler/scala/tools/nsc/settings/MutableSettings.scala @@ -219,8 +219,15 @@ class MutableSettings(val errorFn: String => Unit) } def BooleanSetting(name: String, descr: String) = add(new BooleanSetting(name, descr)) - def ChoiceSetting(name: String, helpArg: String, descr: String, choices: List[String], default: String) = - add(new ChoiceSetting(name, helpArg, descr, choices, default)) + def ChoiceSetting(name: String, helpArg: String, descr: String, choices: List[String], default: String, choicesHelp: List[String]) = + add(new ChoiceSetting(name, helpArg, descr, choices, default, choicesHelp)) + def ChoiceSettingForcedDefault(name: String, helpArg: String, descr: String, choices: List[String], default: String, choicesHelp: List[String]) = + ChoiceSetting(name, helpArg, descr, choices, default, choicesHelp).withPostSetHook(sett => + if (sett.value != default) { + sett.withDeprecationMessage(s"${name}:${sett.value} is deprecated, forcing use of $default") + sett.value = default + } + ) def IntSetting(name: String, descr: String, default: Int, range: Option[(Int, Int)], parser: String => Option[Int]) = add(new IntSetting(name, descr, default, range, parser)) def MultiStringSetting(name: String, arg: String, descr: String) = add(new MultiStringSetting(name, arg, descr)) @@ -254,8 +261,8 @@ class MutableSettings(val errorFn: String => Unit) */ private var singleOutDir: Option[AbstractFile] = None - /** Add a destination directory for sources found under srcdir. - * Both directories should exits. + /** Add a destination directory for sources found under `srcDir`. + * Both directories should exist. */ def add(srcDir: String, outDir: String): Unit = // used in ide? add(checkDir(AbstractFile.getDirectory(srcDir), srcDir), @@ -409,9 +416,9 @@ class MutableSettings(val errorFn: String => Unit) // Helper to generate a textual explanation of valid inputs private def getValidText: String = (min, max) match { case (IntMin, IntMax) => "can be any integer" - case (IntMin, x) => "must be less than or equal to "+x - case (x, IntMax) => "must be greater than or equal to "+x - case _ => "must be between %d and %d".format(min, max) + case (IntMin, x) => f"must be less than or equal to $x%d" + case (x, IntMax) => f"must be greater than or equal to $x%d" + case _ => f"must be between $min%d and $max%d" } // Ensure that the default value is actually valid @@ -424,7 +431,7 @@ class MutableSettings(val errorFn: String => Unit) } } - def errorMsg() = errorFn("invalid setting for -"+name+" "+getValidText) + def errorMsg() = errorFn(s"invalid setting for $name $getValidText") def tryToSet(args: List[String]) = if (args.isEmpty) errorAndValue("missing argument", None) @@ -437,7 +444,7 @@ class MutableSettings(val errorFn: String => Unit) if (value == default) Nil else List(name, value.toString) - withHelpSyntax(name + " <n>") + withHelpSyntax(s"$name <n>") } /** A setting represented by a boolean flag (false, unless set) */ @@ -620,7 +627,7 @@ class MutableSettings(val errorFn: String => Unit) descr: String, val domain: E, val default: Option[List[String]] - ) extends Setting(name, s"$descr: `_' for all, `$name:help' to list") with Clearable { + ) extends Setting(name, s"$descr: `_' for all, `$name:help' to list choices.") with Clearable { withHelpSyntax(s"$name:<_,$helpArg,-$helpArg>") @@ -741,9 +748,9 @@ class MutableSettings(val errorFn: String => Unit) def contains(choice: domain.Value): Boolean = value contains choice - def isHelping: Boolean = sawHelp + override def isHelping: Boolean = sawHelp - def help: String = { + override def help: String = { val describe: ((String, String)) => String = { val choiceWidth = choices.map(_.length).max + 1 val formatStr = s" %-${choiceWidth}s %s" @@ -809,18 +816,33 @@ class MutableSettings(val errorFn: String => Unit) helpArg: String, descr: String, override val choices: List[String], - val default: String) - extends Setting(name, descr + choices.mkString(" (", ",", ") default:" + default)) { + val default: String, + val choicesHelp: List[String]) + extends Setting(name, + if (choicesHelp.isEmpty) s"$descr Choices: ${choices.mkString("(", ",", ")")}, default: $default." + else s"$descr Default: `$default', `help' to list choices.") { type T = String protected var v: T = default def indexOfChoice: Int = choices indexOf value - private def usageErrorMessage = f"Usage: $name:<$helpArg>%n where <$helpArg> choices are ${choices mkString ", "} (default: $default)%n" + private def choicesHelpMessage = if (choicesHelp.isEmpty) "" else { + val choiceLength = choices.map(_.length).max + 1 + val formatStr = s" %-${choiceLength}s %s%n" + choices.zipAll(choicesHelp, "", "").map({ + case (choice, desc) => formatStr.format(choice, desc) + }).mkString("") + } + private def usageErrorMessage = f"Usage: $name:<$helpArg> where <$helpArg> choices are ${choices mkString ", "} (default: $default).%n$choicesHelpMessage" + + private var sawHelp = false + override def isHelping = sawHelp + override def help = usageErrorMessage def tryToSet(args: List[String]) = errorAndValue(usageErrorMessage, None) override def tryToSetColon(args: List[String]) = args match { case Nil => errorAndValue(usageErrorMessage, None) + case List("help") => sawHelp = true; Some(Nil) case List(x) if choices contains x => value = x ; Some(Nil) case List(x) => errorAndValue("'" + x + "' is not a valid choice for '" + name + "'", None) case xs => errorAndValue("'" + name + "' does not accept multiple arguments.", None) |