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_between_empty_braces, DefaultCodeFormatterConstants.FORMATTER_INSERT_SPACE_BETWEEN_EMPTY_BRACES_IN_ARRAY_INITIALIZER, ARRAY_DECL_PREVIEW); 
        return root;
    }
    
    private static InnerNode createArrayDeclarationTree(Map workingValues, InnerNode parent) {
        final InnerNode root= new InnerNode(parent, workingValues, FormatterMessages.WhiteSpaceTabPage_arraydecls); 
        
        createOption(root, workingValues, FormatterMessages.WhiteSpaceTabPage_before_opening_bracket, DefaultCodeFormatterConstants.FORMATTER_INSERT_SPACE_BEFORE_OPENING_BRACKET_IN_ARRAY_TYPE_REFERENCE, ARRAY_DECL_PREVIEW); 
        createOption(root, workingValues, FormatterMessages.WhiteSpaceTabPage_between_empty_brackets, DefaultCodeFormatterConstants.FORMATTER_INSERT_SPACE_BETWEEN_BRACKETS_IN_ARRAY_TYPE_REFERENCE, ARRAY_DECL_PREVIEW); 
        return root;
    }
    
    private static InnerNode createArrayElementAccessTree(Map workingValues, InnerNode parent) {
        final InnerNode root= new InnerNode(parent, workingValues, FormatterMessages.WhiteSpaceTabPage_arrayelem); 
        
        createOption(root, workingValues, FormatterMessages.WhiteSpaceTabPage_before_opening_bracket, DefaultCodeFormatterConstants.FORMATTER_INSERT_SPACE_BEFORE_OPENING_BRACKET_IN_ARRAY_REFERENCE, ARRAY_REF_PREVIEW); 
        createOption(root, workingValues, FormatterMessages.WhiteSpaceTabPage_after_opening_bracket, DefaultCodeFormatterConstants.FORMATTER_INSERT_SPACE_AFTER_OPENING_BRACKET_IN_ARRAY_REFERENCE, ARRAY_REF_PREVIEW); 
        createOption(root, workingValues, FormatterMessages.WhiteSpaceTabPage_before_closing_bracket, DefaultCodeFormatterConstants.FORMATTER_INSERT_SPACE_BEFORE_CLOSING_BRACKET_IN_ARRAY_REFERENCE, ARRAY_REF_PREVIEW); 
        
        return root;
    }
    
    private static InnerNode createArrayAllocTree(Map workingValues, InnerNode parent) {
        final InnerNode root= new InnerNode(parent, workingValues, FormatterMessages.WhiteSpaceTabPage_arrayalloc); 
        createOption(root, workingValues, FormatterMessages.WhiteSpaceTabPage_before_opening_bracket, DefaultCodeFormatterConstants.FORMATTER_INSERT_SPACE_BEFORE_OPENING_BRACKET_IN_ARRAY_ALLOCATION_EXPRESSION, ARRAY_DECL_PREVIEW); 
        createOption(root, workingValues, FormatterMessages.WhiteSpaceTabPage_after_opening_bracket, DefaultCodeFormatterConstants.FORMATTER_INSERT_SPACE_AFTER_OPENING_BRACKET_IN_ARRAY_ALLOCATION_EXPRESSION, ARRAY_DECL_PREVIEW); 
        createOption(root, workingValues, FormatterMessages.WhiteSpaceTabPage_before_closing_bracket, DefaultCodeFormatterConstants.FORMATTER_INSERT_SPACE_BEFORE_CLOSING_BRACKET_IN_ARRAY_ALLOCATION_EXPRESSION, ARRAY_DECL_PREVIEW); 
        createOption(root, workingValues, FormatterMessages.WhiteSpaceTabPage_between_empty_brackets, DefaultCodeFormatterConstants.FORMATTER_INSERT_SPACE_BETWEEN_EMPTY_BRACKETS_IN_ARRAY_ALLOCATION_EXPRESSION, ARRAY_DECL_PREVIEW); 
        return root;
    }