Package com.singularsys.jep

Class PrintVisitor.NullPrintVisitor

java.lang.Object

com.singularsys.jep.PrintVisitor

com.singularsys.jep.PrintVisitor.NullPrintVisitor

All Implemented Interfaces:

JepComponent, ParserVisitor, Serializable

Enclosing class:

PrintVisitor

public static class PrintVisitor.NullPrintVisitor
extends PrintVisitor

A do-nothing version of a PrintVisitor for reducing memory usage.

Since:

3.5

Author:

Richard Morris

See Also:

• Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class com.singularsys.jep.PrintVisitor

PrintVisitor.NullPrintVisitor, PrintVisitor.PrintRulesI, PrintVisitor.StdElePrintRule, PrintVisitor.StdListPrintRule

Field Summary

Fields inherited from class com.singularsys.jep.PrintVisitor

COMPLEX_I, format, fp, FULL_BRACKET, FunctionArgSep, FunLBracket, FunRBracket, LBracket, mode, NULL_PRINT_VISITOR, ot, RBracket, sb, specialFunRules, specialRules, specialVarName

Method Summary

Modifier and Type	Method	Description
void	addSpecialRule(Operator op, PrintVisitor.PrintRulesI rule)	Adds a special print rule to be added for a given operator.
void	addSpecialRule(String funName, PrintVisitor.PrintRulesI rule)	Adds a special print rule to be added for a given function.
String	addSpecialVarName(String oldName, String newName)	Allows a replacement for a specific variable name
JepComponent	getLightWeightInstance()	Returns this
PrintVisitor.PrintRulesI	getSpecialFunRule(String key)	Finds the special rule, if any, associated with an operator.
PrintVisitor.PrintRulesI	getSpecialRule(Operator key)	Finds the special rule, if any, associated with an operator.
String	getSpecialVarName(String key)	Finds the replacement string, if any, associated with a variable.
void	init(Jep jep)	Initialize the component.

Methods inherited from class com.singularsys.jep.PrintVisitor

append, formatValue, formatValue, getFunArgSep, getFunLBracket, getFunRBracket, getLBracket, getMaxLen, getMode, getMode, getRBracket, print, print, printBrackets, println, println, printNoBrackets, printWrap, setFunArgSep, setFunLBracket, setFunRBracket, setLBracket, setMaxLen, setMode, setNumberFormat, setRBracket, testLeft, testMid, testRight, toString, visit, visit, visit, visit, visit, visitBinary, visitNaryBinary, visitUnary

Methods inherited from class java.lang.Object

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

Method Details

init

public void init(Jep jep)

Description copied from interface: JepComponent

Initialize the component. This method is called whenever a component is added to Jep. Hence, it allows components to keep track of the other components they may rely on.

Specified by:

init in interface JepComponent

Overrides:

init in class PrintVisitor

Parameters:

jep - the current Jep instance

getLightWeightInstance

public JepComponent getLightWeightInstance()

Returns this

Specified by:

getLightWeightInstance in interface JepComponent

Overrides:

getLightWeightInstance in class PrintVisitor

Returns:

either a new instance, null or 'this'.

addSpecialRule

public void addSpecialRule(Operator op,
 PrintVisitor.PrintRulesI rule)

Description copied from class: PrintVisitor

Adds a special print rule to be added for a given operator.

Overrides:

addSpecialRule in class PrintVisitor

Parameters:

op - the operator the rule applies to

rule - the print rule to use

addSpecialRule

public void addSpecialRule(String funName,
 PrintVisitor.PrintRulesI rule)

Description copied from class: PrintVisitor

Adds a special print rule to be added for a given function.

Overrides:

addSpecialRule in class PrintVisitor

Parameters:

funName - name of function

rule - the print rule to use

getSpecialRule

public PrintVisitor.PrintRulesI getSpecialRule(Operator key)

Description copied from class: PrintVisitor

Finds the special rule, if any, associated with an operator.

Overrides:

getSpecialRule in class PrintVisitor

Parameters:

key - the Operator

Returns:

the rule or null, if there is no special rule

getSpecialFunRule

public PrintVisitor.PrintRulesI getSpecialFunRule(String key)

Description copied from class: PrintVisitor

Finds the special rule, if any, associated with an operator.

Overrides:

getSpecialFunRule in class PrintVisitor

Parameters:

key - name of the function

Returns:

the rule or null, if there is no special rule

getSpecialVarName

public String getSpecialVarName(String key)

Description copied from class: PrintVisitor

Finds the replacement string, if any, associated with a variable.

Overrides:

getSpecialVarName in class PrintVisitor

Parameters:

key - of the variable

Returns:

the name or null, if there is no special name

addSpecialVarName

public String addSpecialVarName(String oldName,
 String newName)

Description copied from class: PrintVisitor

Allows a replacement for a specific variable name

Overrides:

addSpecialVarName in class PrintVisitor

Parameters:

oldName - name of variable to replace

newName - string to print as replacement