Package com.singularsys.extensions.rewrite

Class NaryToBinaryRule

java.lang.Object

com.singularsys.extensions.rewrite.AbstractRewrite

com.singularsys.extensions.rewrite.NaryToBinaryRule

All Implemented Interfaces:

RewriteRuleI, JepComponent, Serializable

public class NaryToBinaryRule
extends AbstractRewrite

Converts NaryBinaryFunction functions with multiple arguments to nested binary functions. e.g. +(a,b,c) -> (a+b)+c. If the function has an operators it must have either left (a+b)+c right binding a=(b=c) Operator.isRightBinding() Functions without operators assumed to be left associative. This rule is the inverse of BinaryToNaryRule and the two should not be used together. #see @link Operator#isLeftBinding()

Since:

Jep 4.1 extensions 2.2

See Also:

• Serialized Form

Field Summary

Fields inherited from class com.singularsys.extensions.rewrite.AbstractRewrite

dcv, jep, nf, opSet, tu

Constructor Summary

Constructors

Constructor	Description
NaryToBinaryRule()

Method Summary

Modifier and Type	Method	Description
Node	apply(ASTFunNode node, List<Node> children)	Rewrites the node
boolean	test(ASTFunNode node, List<Node> children)	Returns true if node needs to be rewritten, according to this rule.

Methods inherited from class com.singularsys.extensions.rewrite.AbstractRewrite

getLightWeightInstance, init, toString

Methods inherited from class java.lang.Object

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

Constructor Details

NaryToBinaryRule

public NaryToBinaryRule()

Method Details

test

public boolean test(ASTFunNode node,
 List<Node> children)
             throws ParseException

Description copied from interface: RewriteRuleI

Returns true if node needs to be rewritten, according to this rule.

Throws:

ParseException - if for some reason rewriting cannot be performed.

apply

public Node apply(ASTFunNode node,
 List<Node> children)
           throws ParseException

Description copied from interface: RewriteRuleI

Rewrites the node

Throws:

ParseException