83 lines
2.7 KiB
Java
83 lines
2.7 KiB
Java
/*
|
|
* Copyright © 2002 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
|
|
* California 95054, U.S.A. All rights reserved. Sun Microsystems, Inc. has
|
|
* intellectual property rights relating to technology embodied in the product
|
|
* that is described in this document. In particular, and without limitation,
|
|
* these intellectual property rights may include one or more of the U.S.
|
|
* patents listed at http://www.sun.com/patents and one or more additional
|
|
* patents or pending patent applications in the U.S. and in other countries.
|
|
* U.S. Government Rights - Commercial software. Government users are subject
|
|
* to the Sun Microsystems, Inc. standard license agreement and applicable
|
|
* provisions of the FAR and its supplements. Use is subject to license terms.
|
|
* Sun, Sun Microsystems, the Sun logo and Java are trademarks or registered
|
|
* trademarks of Sun Microsystems, Inc. in the U.S. and other countries. This
|
|
* product is covered and controlled by U.S. Export Control laws and may be
|
|
* subject to the export or import laws in other countries. Nuclear, missile,
|
|
* chemical biological weapons or nuclear maritime end uses or end users,
|
|
* whether direct or indirect, are strictly prohibited. Export or reexport
|
|
* to countries subject to U.S. embargo or to entities identified on U.S.
|
|
* export exclusion lists, including, but not limited to, the denied persons
|
|
* and specially designated nationals lists is strictly prohibited.
|
|
*/
|
|
|
|
package csjavacc.struct;
|
|
|
|
import java.util.*;
|
|
|
|
import csjavacc.parser.NfaState;
|
|
|
|
/**
|
|
* Describes regular expressions which are sequences of
|
|
* other regular expressions.
|
|
*/
|
|
|
|
public class RSequence extends RegularExpression {
|
|
|
|
/**
|
|
* The list of units in this regular expression sequence. Each
|
|
* Vector component will narrow to RegularExpression.
|
|
*/
|
|
public java.util.Vector units = new java.util.Vector();
|
|
|
|
public Nfa GenerateNfa(boolean ignoreCase)
|
|
{
|
|
if (units.size() == 1)
|
|
return ((RegularExpression)units.elementAt(0)).GenerateNfa(ignoreCase);
|
|
|
|
Nfa retVal = new Nfa();
|
|
NfaState startState = retVal.start;
|
|
NfaState finalState = retVal.end;
|
|
Nfa temp1;
|
|
Nfa temp2 = null;
|
|
|
|
RegularExpression curRE;
|
|
|
|
curRE = (RegularExpression)units.elementAt(0);
|
|
temp1 = curRE.GenerateNfa(ignoreCase);
|
|
startState.AddMove(temp1.start);
|
|
|
|
for (int i = 1; i < units.size(); i++)
|
|
{
|
|
curRE = (RegularExpression)units.elementAt(i);
|
|
|
|
temp2 = curRE.GenerateNfa(ignoreCase);
|
|
temp1.end.AddMove(temp2.start);
|
|
temp1 = temp2;
|
|
}
|
|
|
|
temp2.end.AddMove(finalState);
|
|
|
|
return retVal;
|
|
}
|
|
|
|
public RSequence()
|
|
{
|
|
}
|
|
|
|
public RSequence(Vector seq)
|
|
{
|
|
ordinal = Integer.MAX_VALUE;
|
|
units = seq;
|
|
}
|
|
}
|