Package net.emustudio.edigen.passes

Class NarrowMasksVisitor

java.lang.Object

net.emustudio.edigen.Visitor

net.emustudio.edigen.passes.NarrowMasksVisitor

public class NarrowMasksVisitor
extends Visitor

A visitor which removes all child masks of a node except the first one, attaches them to a new empty pattern and attaches that pattern (if it is not empty) to the first mask.

This is necessary to represent the fact that if no pattern matches an input, the next mask (and its associated patterns) is tried.

Constructor Summary

Constructors

Constructor	Description
NarrowMasksVisitor()

Method Summary

Modifier and Type	Method	Description
void	visit(Pattern pattern)	Moves all child masks of the pattern node except the first one.
void	visit(Rule rule)	Moves all child masks of the rule node except the first one.

Methods inherited from class net.emustudio.edigen.Visitor

visit, visit, visit, visit, visit, visit, visit, visit, visit

Methods inherited from class java.lang.Object

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

Constructor Detail

NarrowMasksVisitor

public NarrowMasksVisitor()

Method Detail

visit

public void visit(Rule rule)
           throws SemanticException

Moves all child masks of the rule node except the first one.

Overrides:

visit in class Visitor

Parameters:

rule - the rule node

Throws:

SemanticException - never

visit

public void visit(Pattern pattern)
           throws SemanticException

Moves all child masks of the pattern node except the first one.

Overrides:

visit in class Visitor

Parameters:

pattern - the pattern node

Throws:

SemanticException - never