Package Torello.CSS

Class CDO

  • All Implemented Interfaces:
    java.io.Serializable, java.lang.CharSequence, java.lang.Comparable<java.lang.CharSequence>
    public class CDO
extends CSSToken
implements java.lang.CharSequence, java.io.Serializable, java.lang.Comparable<java.lang.CharSequence>
    This is a Token Data-Class. It is a descendant of the root CSSToken-Class: CSSToken. Instances of the class are usually are produced by the CSSTokenizer class. Many (but not all) of these subclasses maintain a static-method for building instances of this class named 'build'. Any CSSToken-subclass that is neither a singleton-instance, nor an "Error-Subtype" should have such a builder. Singeton instances do not need builders, and the two Error-Subtype Classes can only be generated by the tokenizer.

    All CSSToken subclasses have a CSSToken.str field which contains the exact character data that was extracted and used to construct instances of this class. All sub-casses also have several "Loop Optimization" methods. These are methods that may or may not be useful in light of some of the newer additions to JDK 17 & 21 including the 'instanceof varName' conditional-expression variable-naming features.

    The algorithms used to write this tokenizer were generated based solely on the CSS Working-Group's Syntax-Documentation. This document may be viewed here: CSS Working-Group CSS-Syntax. There is an external site that maintain all thing CSS located at drafts.csswg.org
    CSS-Tokenizer Class for the Comment-Delimiter Open Token.
    See Also:
    Serialized Form


    • Field Detail

      • serialVersionUID

        🡇  ⇈  ⮫ 🗕  🗗  🗖 
        protected static final long serialVersionUID
        This fulfils the SerialVersion UID requirement for all classes that implement Java's interface java.io.Serializable. Using the Serializable Implementation offered by java is very easy, and can make saving program state when debugging a lot easier. It can also be used in place of more complicated systems like "hibernate" to store data as well.
        See Also:
        Constant Field Values
        Code:
        Exact Field Declaration Expression:
         protected static final long serialVersionUID = 1;

    • Method Detail

      • isCDO

        🡅  🡇  ⇈  ⮫ 🗕  🗗  🗖 
        public final boolean isCDO()
        Description copied from class: CSSToken
        Loop Optimization: This method only returns TRUE if this is an actual instance of CDO.
        Overrides:
        isCDO in class CSSToken
        Returns:
        This method returns FALSE for all instances of CSSToken, except when 'this' instance is actually the CDO Subclass.

        That class has overridden this method, and returns TRUE.
        See Also:
        isCDO()

      • ifCDO

        🡅  🡇  ⇈  ⮫ 🗕  🗗  🗖 
        public final CDO ifCDO()
        Description copied from class: CSSToken
        Loop Optimization: When this method is invoked on an instance of sub-class CDO this method produces 'this' instance.
        Overrides:
        ifCDO in class CSSToken
        Returns:
        This method shall return null, always, except when 'this' is an actual instance of CDO. When so, this method simply returns 'this'. All other sub-classes of (abstract) class CSSToken inherit this method, and therefore return null.
        See Also:
        ifCDO()

      • is

        🡅  ⇈  ⮫ 🗕  🗗  🗖 
        public static boolean is​(int[] css,
                         int sPos)
        Checks whether or not the next four code-point / characters are '<', '!', '-' and '-'

        Tokenizer: Comment-Delimiter Open Consume Method, Pseudo-Code

        Making use of the CSS Parser DOES NOT require any knowledge of how the underlying Pass 1 Tokenizer actually works. Below is the CSS Working Group's Comment-Delimiter Open Rail-Road Diagram. It is here for informational purposes.
        These Parsing Pseudo-Code Instructions and Rail-Road Diagrams have been copied from the CSS-Working-Group Web-Site:
        https://drafts.csswg.org/css-syntax/#CDO-token-diagram
        <CDO-token>
        <<!---->!--
        Parameters:
        css - CSS-String as an array of code-points.
        sPos - The array-index where the tokenizer is to consume its next token
        Returns:
        TRUE if and only if the next token in the array is a CDO