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Allow ArgType.Choice for Enums to limit list of values #96

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Allow ArgType.Choice for Enums to limit list of values #96

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c7bb447
Allow ArgType.Choice for Enums to limit list of values
tjerkw Feb 13, 2023
2576e4d
Allow passing printHelpOnEmptyArgs to ArgParser
tjerkw Feb 15, 2023
6081752
Merge pull request #1 from tjerkw/tjerkw-patch-printHelpOnEmptyArgs
tjerkw Feb 15, 2023
d61c154
Update ArgType.kt
tjerkw Feb 15, 2023
33c9260
Update ArgParser.kt
tjerkw Feb 15, 2023
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2 changes: 1 addition & 1 deletion core/commonMain/src/ArgParser.kt
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Original file line number Diff line number Diff line change
Expand Up @@ -531,7 +531,7 @@ open class ArgParser(

protected fun parse(args: List<String>): ArgParserResult {
check(parsingState == null) { "Parsing of command line options can be called only once." }

// Add help option.
val helpDescriptor = if (useDefaultHelpShortName) OptionDescriptor<Boolean, Boolean>(
optionFullFormPrefix,
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7 changes: 4 additions & 3 deletions core/commonMain/src/ArgType.kt
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Expand Up @@ -75,14 +75,15 @@ abstract class ArgType<T : Any>(val hasParameter: kotlin.Boolean) {
* Helper for arguments that have limited set of possible values represented as enumeration constants.
*/
inline fun <reified T : Enum<T>> Choice(
choices: List<T> = enumValues<T>().toList(),
noinline toVariant: ((kotlin.String) -> T)? = null,
noinline toString: (T) -> kotlin.String = { it.toString().lowercase() }
): Choice<T> {
return Choice(
enumValues<T>().toList(),
choices,
toVariant ?: {
enumValues<T>().find { e -> toString(e).equals(it, ignoreCase = true) }
?: throw IllegalArgumentException("No enum constant $it")
choices.find { e -> toString(e).equals(it, ignoreCase = true) }
?: throw IllegalArgumentException("Not a valid enum constant choice $it")
},
toString
)
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