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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><!--NewPage--><HTML><HEAD><!-- Generated by javadoc (build 1.5.0_07) on Tue Oct 16 12:57:45 EDT 2007 --><TITLE>LogicalExpression</TITLE><META NAME="keywords" CONTENT="JSHOP2.LogicalExpression class"><LINK REL ="stylesheet" TYPE="text/css" HREF="../stylesheet.css" TITLE="Style"><SCRIPT type="text/javascript">function windowTitle(){ parent.document.title="LogicalExpression";}</SCRIPT><NOSCRIPT></NOSCRIPT></HEAD><BODY BGCOLOR="white" onload="windowTitle();"><!-- ========= START OF TOP NAVBAR ======= --><A NAME="navbar_top"><!-- --></A><A HREF="#skip-navbar_top" title="Skip navigation links"></A><TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0" SUMMARY=""><TR><TD COLSPAN=2 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"><A NAME="navbar_top_firstrow"><!-- --></A><TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3" SUMMARY=""> <TR ALIGN="center" VALIGN="top"> <TD BGCOLOR="#EEEEFF" 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NAME="skip-navbar_top"></A><!-- ========= END OF TOP NAVBAR ========= --><HR><!-- ======== START OF CLASS DATA ======== --><H2><FONT SIZE="-1">JSHOP2</FONT><BR>Class LogicalExpression</H2><PRE>java.lang.Object <IMG SRC="../resources/inherit.gif" ALT="extended by "><A HREF="../JSHOP2/CompileTimeObject.html" title="class in JSHOP2">JSHOP2.CompileTimeObject</A> <IMG SRC="../resources/inherit.gif" ALT="extended by "><B>JSHOP2.LogicalExpression</B></PRE><DL><DT><B>Direct Known Subclasses:</B> <DD><A HREF="../JSHOP2/LogicalExpressionAssignment.html" title="class in JSHOP2">LogicalExpressionAssignment</A>, <A HREF="../JSHOP2/LogicalExpressionAtomic.html" title="class in JSHOP2">LogicalExpressionAtomic</A>, <A HREF="../JSHOP2/LogicalExpressionCall.html" title="class in JSHOP2">LogicalExpressionCall</A>, <A HREF="../JSHOP2/LogicalExpressionConjunction.html" title="class in JSHOP2">LogicalExpressionConjunction</A>, <A HREF="../JSHOP2/LogicalExpressionDisjunction.html" title="class in JSHOP2">LogicalExpressionDisjunction</A>, <A HREF="../JSHOP2/LogicalExpressionForAll.html" title="class in JSHOP2">LogicalExpressionForAll</A>, <A HREF="../JSHOP2/LogicalExpressionNegation.html" title="class in JSHOP2">LogicalExpressionNegation</A>, <A HREF="../JSHOP2/LogicalExpressionNil.html" title="class in JSHOP2">LogicalExpressionNil</A></DD></DL><HR><DL><DT><PRE>public abstract class <B>LogicalExpression</B><DT>extends <A HREF="../JSHOP2/CompileTimeObject.html" title="class in JSHOP2">CompileTimeObject</A></DL></PRE><P>Each logical expression at compile time is represented as a class derived from this abstract class.<P><P><DL><DT><B>Version:</B></DT> <DD>1.0.3</DD><DT><B>Author:</B></DT> <DD>Okhtay Ilghami, <a href="http://www.cs.umd.edu/~okhtay">http://www.cs.umd.edu/~okhtay</a></DD></DL><HR><P><!-- =========== FIELD SUMMARY =========== --><A NAME="field_summary"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"><B>Field Summary</B></FONT></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>private static int</CODE></FONT></TD><TD><CODE><B><A HREF="../JSHOP2/LogicalExpression.html#classCnt">classCnt</A></B></CODE><BR> The number of times function <code>getClassCnt()</code> is called before.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>private int</CODE></FONT></TD><TD><CODE><B><A HREF="../JSHOP2/LogicalExpression.html#varCount">varCount</A></B></CODE><BR> The number of variables in this logical expression, used to determine the size of bindings when unifiers are calculated.</TD></TR></TABLE> <A NAME="fields_inherited_from_class_JSHOP2.CompileTimeObject"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TH ALIGN="left"><B>Fields inherited from class JSHOP2.<A HREF="../JSHOP2/CompileTimeObject.html" title="class in JSHOP2">CompileTimeObject</A></B></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><A HREF="../JSHOP2/CompileTimeObject.html#endl">endl</A></CODE></TD></TR></TABLE> <!-- ======== CONSTRUCTOR SUMMARY ======== --><A NAME="constructor_summary"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"><B>Constructor Summary</B></FONT></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><B><A HREF="../JSHOP2/LogicalExpression.html#LogicalExpression()">LogicalExpression</A></B>()</CODE><BR> </TD></TR></TABLE> <!-- ========== METHOD SUMMARY =========== --><A NAME="method_summary"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"><B>Method Summary</B></FONT></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> int</CODE></FONT></TD><TD><CODE><B><A HREF="../JSHOP2/LogicalExpression.html#getClassCnt()">getClassCnt</A></B>()</CODE><BR> This function returns a unique integer every time called.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>abstract java.lang.String</CODE></FONT></TD><TD><CODE><B><A HREF="../JSHOP2/LogicalExpression.html#getInitCode()">getInitCode</A></B>()</CODE><BR> This function produces Java code that initializes some data structures that will be needed to create the precondition object that implements this logical expression at run time.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> int</CODE></FONT></TD><TD><CODE><B><A HREF="../JSHOP2/LogicalExpression.html#getVarCount()">getVarCount</A></B>()</CODE><BR> This function returns the number of variables in this logical expression.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>protected abstract void</CODE></FONT></TD><TD><CODE><B><A HREF="../JSHOP2/LogicalExpression.html#propagateVarCount(int)">propagateVarCount</A></B>(int varCountIn)</CODE><BR> This abstract function is called whenever the number of variables for an object of this class is set.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../JSHOP2/LogicalExpression.html#setVarCount(int)">setVarCount</A></B>(int varCountIn)</CODE><BR> This function is used to set the number of variables for this logical expression.</TD></TR>?? 快捷鍵說(shuō)明
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