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Fix #4005 command-line options help is incomplete #4018

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Merged
merged 4 commits into from
Feb 26, 2018
Merged

Fix #4005 command-line options help is incomplete #4018

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7578c37
Fix #4005 command-line options help is incomplete
Feb 20, 2018
f169cbd
Erase the string builder and use the 's' string formatter for all add…
Feb 22, 2018
a2a0a0d
Move defaultValue and formatSetting helpers under the helpStr. Refact…
Feb 22, 2018
fab4c4f
Remove unused param from defaultValue call. Remove extra spaces from …
Feb 26, 2018
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10 changes: 9 additions & 1 deletion compiler/src/dotty/tools/dotc/config/CompilerCommand.scala
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Original file line number Diff line number Diff line change
Expand Up @@ -71,7 +71,15 @@ object CompilerCommand extends DotClass {
val ss = (ctx.settings.allSettings filter cond).toList sortBy (_.name)
val width = (ss map (_.name.length)).max
def format(s: String) = ("%-" + width + "s") format s
def helpStr(s: Setting[_]) = s"${format(s.name)} ${s.description}"
def formatSettings(name: String, value: String) = {
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You can make it an inner method of def helpStr

if (value.nonEmpty)
// the format here is helping to make empty padding and put the additional information exactly under the description.
s"\n${format("")} $name: $value."
else
""
}
def helpStr(s: Setting[_]) =
s"${format(s.name)} ${s.description} ${formatSettings("Default", s.defaultValue)} ${formatSettings("Choices", s.legalChoices)}"
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@ioganegambaputifonguser Thanks for the changes, I think they address most of my suggestions :-)

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@Blaisorblade you are welcome. also added comments to make it more clear.

ss map helpStr mkString "\n"
}

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11 changes: 10 additions & 1 deletion compiler/src/dotty/tools/dotc/config/Settings.scala
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Expand Up @@ -88,7 +88,16 @@ object Settings {
state.update(idx, x.asInstanceOf[T])
}

def isDefaultIn(state: SettingsState) = valueIn(state) == default
def isDefaultIn(state: SettingsState): Boolean = valueIn(state) == default

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I guess we don’t need to add this type annotation, no? Otherwise, LGTM.

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I followed the Boy Scout Rule and added this small thing :) Is it true that the public methods have to have the return type annotation? Please correct me if I am not right.

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Oh I see! Fine with me.

def defaultValue: String = implicitly[ClassTag[T]] match {
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I would make it an inner method of def helpStr. Also you don't need a cast here:

def defaultValue(setting: Setting[_]): String = setting.default match {
  case _: Int | _: String => setting.default.toString
  case _ => ""
}

case StringTag => default.asInstanceOf[String]
case IntTag => default.asInstanceOf[Int].toString
case _ =>
// For now, skip the default values that do not make sense for the user of course.
// For example 'false' for the version command.
""
}

def legalChoices: String =
if (choices.isEmpty) ""
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