org.htmlparser.scanners

Class TagScanner

java.lang.Object

org.htmlparser.scanners.TagScanner

All Implemented Interfaces:

java.io.Serializable, Scanner

Direct Known Subclasses:

CompositeTagScanner, JspScanner

public class TagScanner
extends java.lang.Object
implements Scanner, java.io.Serializable

TagScanner is an abstract superclass, subclassed to create specific scanners. When asked to scan the tag, this class does nothing other than perform the tag's semantic action. Use TagScanner when you have a meta task to do like setting the BASE url for the page when a BASE tag is encountered. If you want to match end tags and handle special syntax between tags, then you'll probably want to subclass CompositeTagScanner instead.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
TagScanner() Create a (non-composite) tag scanner.

Method Summary

Modifier and Type	Method and Description
Tag	scan(Tag tag, Lexer lexer, NodeList stack) Scan the tag.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

TagScanner

public TagScanner()

Create a (non-composite) tag scanner.

Method Detail

scan

public Tag scan(Tag tag,
                Lexer lexer,
                NodeList stack)
         throws ParserException

Scan the tag. For this implementation, the only operation is to perform the tag's semantic action.

Specified by:

scan in interface Scanner

Parameters:

tag - The tag to scan.

lexer - Provides html page access.

stack - The parse stack. May contain pending tags that enclose this tag.

Returns:

The resultant tag (may be unchanged).

Throws:

ParserException - if an unrecoverable problem occurs.