Bug 111139 Add FORMATTER_INSERT_SPACE_BEFORE_PARENTHESIZED_EXPRESSION_IN_RETURN to the code formatter preference page
This new option should be added in the whitespace section (control statements) of the code formatter preference page. It makes the insertion of a space after the return keyword optional when the following expression is a cast expression, a parenthesized expression, a string literal or prefix expression. For all other types of expressions, the insertion of a space is mandatory.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/preferences/formatter/WhiteSpaceOptions.java
createOption(root, workingValues, FormatterMessages.WhiteSpaceTabPage_before_opening_brace, DefaultCodeFormatterConstants.FORMATTER_INSERT_SPACE_BEFORE_OPENING_BRACE_IN_SWITCH, SWITCH_PREVIEW); 
        createOption(root, workingValues, FormatterMessages.WhiteSpaceTabPage_before_opening_paren, DefaultCodeFormatterConstants.FORMATTER_INSERT_SPACE_BEFORE_OPENING_PAREN_IN_SWITCH, SWITCH_PREVIEW); 
        createOption(root, workingValues, FormatterMessages.WhiteSpaceTabPage_after_opening_paren, DefaultCodeFormatterConstants.FORMATTER_INSERT_SPACE_AFTER_OPENING_PAREN_IN_SWITCH, SWITCH_PREVIEW); 
        createOption(root, workingValues, FormatterMessages.WhiteSpaceTabPage_before_closing_paren, DefaultCodeFormatterConstants.FORMATTER_INSERT_SPACE_BEFORE_CLOSING_PAREN_IN_SWITCH, SWITCH_PREVIEW); 
        return root;
    }
    
    private static InnerNode createDoWhileTree(Map workingValues, InnerNode parent) {
        final InnerNode root= new InnerNode(parent, workingValues, FormatterMessages.WhiteSpaceTabPage_do); 
        
        createOption(root, workingValues, FormatterMessages.WhiteSpaceTabPage_before_opening_paren, DefaultCodeFormatterConstants.FORMATTER_INSERT_SPACE_BEFORE_OPENING_PAREN_IN_WHILE, WHILE_PREVIEW); 
        createOption(root, workingValues, FormatterMessages.WhiteSpaceTabPage_after_opening_paren, DefaultCodeFormatterConstants.FORMATTER_INSERT_SPACE_AFTER_OPENING_PAREN_IN_WHILE, WHILE_PREVIEW); 
        createOption(root, workingValues, FormatterMessages.WhiteSpaceTabPage_before_closing_paren, DefaultCodeFormatterConstants.FORMATTER_INSERT_SPACE_BEFORE_CLOSING_PAREN_IN_WHILE, WHILE_PREVIEW); 
        
        return root;
    }
    
    private static InnerNode createSynchronizedTree(Map workingValues, InnerNode parent) {
        final InnerNode root= new InnerNode(parent, workingValues, FormatterMessages.WhiteSpaceTabPage_synchronized); 
        
        createOption(root, workingValues, FormatterMessages.WhiteSpaceTabPage_before_opening_paren, DefaultCodeFormatterConstants.FORMATTER_INSERT_SPACE_BEFORE_OPENING_PAREN_IN_SYNCHRONIZED, SYNCHRONIZED_PREVIEW); 
        createOption(root, workingValues, FormatterMessages.WhiteSpaceTabPage_after_opening_paren, DefaultCodeFormatterConstants.FORMATTER_INSERT_SPACE_AFTER_OPENING_PAREN_IN_SYNCHRONIZED, SYNCHRONIZED_PREVIEW); 
        createOption(root, workingValues, FormatterMessages.WhiteSpaceTabPage_before_closing_paren, DefaultCodeFormatterConstants.FORMATTER_INSERT_SPACE_BEFORE_CLOSING_PAREN_IN_SYNCHRONIZED, SYNCHRONIZED_PREVIEW); 
        return root;
    }
    
    private static InnerNode createTryStatementTree(Map workingValues, InnerNode parent) {
        final InnerNode root= new InnerNode(parent, workingValues, FormatterMessages.WhiteSpaceTabPage_try); 
        
        createOption(root, workingValues, FormatterMessages.WhiteSpaceTabPage_before_opening_paren, DefaultCodeFormatterConstants.FORMATTER_INSERT_SPACE_BEFORE_OPENING_PAREN_IN_CATCH, CATCH_PREVIEW);