[Commands] Avoid printing "Optional" with bogus clean mode.

ddunbar · ddunbar · commit b4c7c98a6434 · 2016-05-28T15:16:57.000-07:00
diff --git a/Sources/Commands/SwiftBuildTool.swift b/Sources/Commands/SwiftBuildTool.swift
@@ -301,8 +301,8 @@ enum CleanMode: CustomStringConvertible {
             self = .build
         case "dist"?, "distribution"?:
             self = .dist
-        default:
-            throw OptionParserError.invalidUsage("invalid clean mode: \(rawValue)")
+        case let value?:
+            throw OptionParserError.invalidUsage("invalid clean mode: \(value)")
         }
     }
 

Original file line number	Diff line number	Diff line change
`@@ -301,8 +301,8 @@ enum CleanMode: CustomStringConvertible {`
`301`	`301`	`self = .build`
`302`	`302`	`case "dist"?, "distribution"?:`
`303`	`303`	`self = .dist`
`304`		`- default:`
`305`		`- throw OptionParserError.invalidUsage("invalid clean mode: \(rawValue)")`
	`304`	`+ case let value?:`
	`305`	`+ throw OptionParserError.invalidUsage("invalid clean mode: \(value)")`
`306`	`306`	`}`
`307`	`307`	`}`
`308`	`308`