diva.sketch.parser2d

Class SingleRule

java.lang.Object

diva.sketch.parser2d.SingleRule

All Implemented Interfaces:

Rule

public class SingleRule
extends Object
implements Rule

A parse rule implementation that matches the RHS of a production and generates the LHS. Subclasses fill in the match() method to impose the constraints of the rule.

Version:

$Revision: 1.3 $

Author:

Michael Shilman (michaels@eecs.berkeley.edu)

Constructor Summary

Constructors

Constructor and Description
SingleRule(String lhsType, String rhsName, String rhsType) A utility constructor which simply takes strings with single words separated by whitespace, separates these strings into arrays, and calls the standard array constructor.

Method Summary

Modifier and Type	Method and Description
Type	getLHSType() Return the LHS type of the rule.
String[]	getRHSNames() Return the RHS names of the rule.
Type[]	getRHSTypes() Return the RHS types of the rule.
CompositeElement	match(CompositeElement[] rhs, Scene db) Match the given scene elements and return a resulting element, or return null if there is no match.

Methods inherited from class java.lang.Object

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

Constructor Detail

SingleRule

public SingleRule(String lhsType,
                  String rhsName,
                  String rhsType)

A utility constructor which simply takes strings with single words separated by whitespace, separates these strings into arrays, and calls the standard array constructor.

Method Detail

getLHSType

public Type getLHSType()

Return the LHS type of the rule.

Specified by:

getLHSType in interface Rule

getRHSTypes

public Type[] getRHSTypes()

Return the RHS types of the rule.

Specified by:

getRHSTypes in interface Rule

getRHSNames

public String[] getRHSNames()

Return the RHS names of the rule.

Specified by:

getRHSNames in interface Rule

match

public CompositeElement match(CompositeElement[] rhs,
                              Scene db)

Match the given scene elements and return a resulting element, or return null if there is no match.

Specified by:

match in interface Rule