Package com.singularsys.extensions.mathml.parser

Class ConstantHandler

java.lang.Object

com.singularsys.extensions.mathml.parser.AbstractHandler

com.singularsys.extensions.mathml.parser.ConstantHandler

All Implemented Interfaces:

TagHandler

public class ConstantHandler
extends AbstractHandler

Handles <cn> elements.

Author:

Richard Morris

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	ConstantHandler.ComplexHandler	Parses complex numbers like <cn type="complex-cartesian">1.23<sep/>4.56</cn>
static class	ConstantHandler.ComplexPolarHandler	Parses complex numbers like <cn type="complex-polar">1.23<sep/>4.56</cn>
static interface	ConstantHandler.ConstantTypeHandler	Methods for individual <cn type="type"> handlers
static class	ConstantHandler.ENotationHandler	Parses numbers in e-notation like <cn type="e-notation">123<sep/>-2</cn>
static class	ConstantHandler.IntegerHandler	Parses integer numbers like <cn type="integer">123</cn>
static class	ConstantHandler.KnownConstantHandler	Parses constants like <cn type="constant">&pi;</cn>
static class	ConstantHandler.RationalHandler	Parses complex numbers like <cn type="rational">123<sep/>456</cn>
static class	ConstantHandler.RealHandler	Parses real numbers like <cn type="real">1.23</cn>

Field Summary

Fields

Modifier and Type	Field	Description
static final boolean	DEBUG

Fields inherited from class com.singularsys.extensions.mathml.parser.AbstractHandler

ft, jep, nf, numf, ot, vt

Constructor Summary

Constructors

Constructor	Description
ConstantHandler(Jep jep)

Method Summary

Modifier and Type	Method	Description
Object	handle(StackFrame frame, Locator loc)	Transform the element, called when a closing tag is encountered.
String	putConstantElement(String key, String value)
String	putEntity(String key, String value)
String	removeConstantElement(String key)
String	removeEntity(String key)

Methods inherited from class com.singularsys.extensions.mathml.parser.AbstractHandler

convertChildrenToNodes, convertToNode, getFt, getJep, getNf, getNumf, getOt, jepNodesAsArray, jepNodesToFlatArray, jepNodesToFlatList

Methods inherited from class java.lang.Object

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

Field Details

DEBUG

public static final boolean DEBUG

See Also:

• Constant Field Values

Constructor Details

ConstantHandler

public ConstantHandler(Jep jep)

Parameters:

jep -

Method Details

handle

public Object handle(StackFrame frame,
 Locator loc)
              throws SAXParseException

Description copied from interface: TagHandler

Transform the element, called when a closing tag is encountered.

Parameters:

frame - StackFrame representing the element

loc - location in input

Returns:

typically a Node, other types of objects may also be returned when the tag has a special meaning for its parent node.

Throws:

SAXParseException

putEntity

public String putEntity(String key,
 String value)

putConstantElement

public String putConstantElement(String key,
 String value)

removeConstantElement

public String removeConstantElement(String key)

removeEntity

public String removeEntity(String key)