org.qscript.operator.OperatorSet Class Reference

Public Member Functions
void	addOperator (Operator op)
void	removeOperator (String symbol)
String	getRegex ()
boolean	hasChanged ()
Operator	getOperator (String symbol)
boolean	hasOperator (String symbol)
Set< String >	getSymbols ()

Static Public Member Functions
static OperatorSet	get ()
static void	set (OperatorSet opset)

Detailed Description

A singleton class to manage all available operators.

Author

Peter Lager

Member Function Documentation

void org.qscript.operator.OperatorSet.addOperator

(

Operator

op

)

Allows user defined operators to be added to the set. This enables customising the script language.

Parameters

op

static OperatorSet org.qscript.operator.OperatorSet.get ( )

static

Get the standard set of operators included. This method is called

Returns

the standard set of operators

Operator org.qscript.operator.OperatorSet.getOperator

(

String

symbol

)

This creates an instance of the operator with the symbol passed as a parameter value.
Effectively this method provides a copy of the operator held in this operator set.

Parameters

symbol

the symbol to search for.

Returns

an operator object that matches the symbol or null if no match.

String org.qscript.operator.OperatorSet.getRegex

(

)

Get the regex to match all operators. If the list of operators has changed since the last time this method was called the regex will be recalculated.

Set<String> org.qscript.operator.OperatorSet.getSymbols

(

)

Get a list of the symbols for this operator set. Changes in the list are not reflected in the operator set which remains unchanged.

boolean org.qscript.operator.OperatorSet.hasChanged

(

)

Returns true if the operator set has changed

boolean org.qscript.operator.OperatorSet.hasOperator

(

String

symbol

)

See if the operator set recognizes a symbol.

Parameters

symbol

the operator symbol to look for

Returns

true if found else false

void org.qscript.operator.OperatorSet.removeOperator

(

String

symbol

)

Remove the operator with the specified symbol.

Parameters

symbol

operator symbol

static void org.qscript.operator.OperatorSet.set ( OperatorSet  opset )

static

This allows you to use your own operator set. The best way to do this is use OperatorSet.get() to get the standard set then add / remove operators to make your own custom set. Then use this method to set it as the default set to use.
Creating and using custom operator sets is advanced stuff, do this at your own risk.

Parameters

opset

the set to use, null values are ignored.

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The documentation for this class was generated from the following file:

• /Users/peter/git/qscript-repos/Q-script/src/org/qscript/operator/OperatorSet.java