Merge pull request #25 from erwinmaza/master

Minor code cleanup for Swift

Author: stefanceriu

SCXcodeSwitchExpander/DVTTextCompletionController+SCXcodeSwitchExpander.m

@@ -98,7 +98,8 @@ - (BOOL)tryExpandingSwitchStatement
             }
 
             // See if the current line has a switch statement
-            NSRange switchRange = [textView.string rangeOfString:@"\\s+switch\\s*\\\(" options:NSRegularExpressionSearch range:NSMakeRange(newLineRange.location, self.session.wordStartLocation - newLineRange.location)];
+			NSString *regPattern = [[SCXcodeSwitchExpander sharedSwitchExpander] isSwift] ? @"\\s+switch\\s*" : @"\\s+switch\\s*\\\(";
+			NSRange switchRange = [textView.string rangeOfString:regPattern options:NSRegularExpressionSearch range:NSMakeRange(newLineRange.location, self.session.wordStartLocation - newLineRange.location)];
             if(switchRange.location == NSNotFound) {
                 return NO;
             }
@@ -146,15 +147,28 @@ - (BOOL)tryExpandingSwitchStatement
             // Generate the items to insert and insert them at the end
             NSMutableString *replacementString = [NSMutableString string];
 
-			if([switchContent stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]].length == 0) {
-				[replacementString appendString:@"\n"];
+			NSString *trimmedContent = [switchContent stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]];
+
+			if(trimmedContent.length == 0) {
+				// remove extraneous empty lines if existing content is only whitespace
+				if (switchContent.length > 0) {
+					[textView insertText:@"" replacementRange:switchContentRange];
+					closingBracketLocation -= switchContent.length;
+					switchContentRange.length = 0;
+					[replacementString appendString:@"\n"];
+				} else {
+					// keep Swift code compact
+					if (![[SCXcodeSwitchExpander sharedSwitchExpander] isSwift]) {
+						[replacementString appendString:@"\n"];
+					}
+				}
 			}
 
             for(IDEIndexSymbol *child in [((IDEIndexContainerSymbol*)symbol).children allObjects]) {
                 if([switchContent rangeOfString:child.displayName].location == NSNotFound) {
                     if ([[SCXcodeSwitchExpander sharedSwitchExpander] isSwift]) {
                         NSString *childDisplayName = [self correctEnumConstantIfFromCocoa:[NSString stringWithFormat:@"%@",symbol] symbolName:symbolName cocoaEnumName:child.displayName];
-                        [replacementString appendString:[NSString stringWithFormat:@"case .%@: \n<#statement#>\nbreak\n\n", childDisplayName]];
+                        [replacementString appendString:[NSString stringWithFormat:@"case .%@: \n<#statement#>\n", childDisplayName]];
                     } else {
                         [replacementString appendString:[NSString stringWithFormat:@"case %@: {\n<#statement#>\nbreak;\n}\n", child.displayName]];
                     }