Class ContentModel

public final class ContentModel
extends Object
implements Serializable

A representation of a content model. A content model is basically a restricted BNF expression. It is restricted in the sense that it must be deterministic. This means that you don't have to represent it as a finite state automaton.

See Annex H on page 556 of the SGML handbook for more information.

Fields

type

public int type

Type. Either '*', '?', '+', ',', '|', '&'.

content

public Object content

The content. Either an Element or a ContentModel.

next

public ContentModel next

The next content model (in a ',', '|' or '&' expression).

Constructors

ContentModel

public ContentModel()

ContentModel

public ContentModel(Element content)

Create a content model for an element.

ContentModel

public ContentModel(int type,
                    ContentModel content)

Create a content model of a particular type.

ContentModel

public ContentModel(int type,
                    Object content,
                    ContentModel next)

Create a content model of a particular type.

Methods

empty

public boolean empty()

Return true if the content model could match an empty input stream.

getElements

public void getElements(Vector<Element> elemVec)

Update elemVec with the list of elements that are part of the this contentModel.

first

public boolean first(Object token)

Return true if the token could potentially be the first token in the input stream.

first

public Element first()

Return the element that must be next.

toString

public String toString()

Convert to a string.

Overrides:

toString in class Object

Returns:

a string representation of the object.