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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Frameset//EN""http://www.w3.org/TR/REC-html40/frameset.dtd"><!--NewPage--><HTML><HEAD><!-- Generated by javadoc on Sat Dec 15 07:40:18 EST 2001 --><TITLE>bcel API: Class ControlFlowGraph</TITLE><LINK REL ="stylesheet" TYPE="text/css" HREF="../../../../../stylesheet.css" TITLE="Style"></HEAD><BODY BGCOLOR="white"><!-- ========== START OF NAVBAR ========== --><A NAME="navbar_top"><!-- --></A><TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0"><TR><TD COLSPAN=2 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"><A NAME="navbar_top_firstrow"><!-- --></A><TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3"> <TR ALIGN="center" VALIGN="top"> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../../overview-summary.html"><FONT CLASS="NavBarFont1"><B>Overview</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-summary.html"><FONT CLASS="NavBarFont1"><B>Package</B></FONT></A> </TD> <TD BGCOLOR="#FFFFFF" 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HREF="../../../../../org/apache/bcel/verifier/structurals/ExceptionHandler.html"><B>NEXT CLASS</B></A></FONT></TD><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../../../index.html" TARGET="_top"><B>FRAMES</B></A> <A HREF="ControlFlowGraph.html" TARGET="_top"><B>NO FRAMES</B></A></FONT></TD></TR><TR><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> SUMMARY: INNER | FIELD | <A HREF="#constructor_summary">CONSTR</A> | <A HREF="#method_summary">METHOD</A></FONT></TD><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">DETAIL: FIELD | <A HREF="#constructor_detail">CONSTR</A> | <A HREF="#method_detail">METHOD</A></FONT></TD></TR></TABLE><!-- =========== END OF NAVBAR =========== --><HR><!-- ======== START OF CLASS DATA ======== --><H2><FONT SIZE="-1">org.apache.bcel.verifier.structurals</FONT><BR>Class ControlFlowGraph</H2><PRE>java.lang.Object | +--<B>org.apache.bcel.verifier.structurals.ControlFlowGraph</B></PRE><HR><DL><DT>public class <B>ControlFlowGraph</B><DT>extends java.lang.Object</DL><P>This class represents a control flow graph of a method.<P><DL><DT><B>Version: </B><DD>$Id: ControlFlowGraph.java,v 1.1.1.1 2001/10/29 20:00:37 jvanzyl Exp $</DD><DT><B>Author: </B><DD><A HREF="http://www.inf.fu-berlin.de/~ehaase"/>Enver Haase</A></DD></DL><HR><P><!-- ======== INNER CLASS SUMMARY ======== --><!-- =========== FIELD SUMMARY =========== --><!-- ======== CONSTRUCTOR SUMMARY ======== --><A NAME="constructor_summary"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=2><FONT SIZE="+2"><B>Constructor Summary</B></FONT></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><B><A HREF="../../../../../org/apache/bcel/verifier/structurals/ControlFlowGraph.html#ControlFlowGraph(org.apache.bcel.generic.MethodGen)">ControlFlowGraph</A></B>(<A HREF="../../../../../org/apache/bcel/generic/MethodGen.html">MethodGen</A> method_gen)</CODE><BR> A Control Flow Graph.</TD></TR></TABLE> <!-- ========== METHOD SUMMARY =========== --><A NAME="method_summary"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=2><FONT SIZE="+2"><B>Method Summary</B></FONT></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../../../../org/apache/bcel/verifier/structurals/InstructionContext.html">InstructionContext</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../../../org/apache/bcel/verifier/structurals/ControlFlowGraph.html#contextOf(org.apache.bcel.generic.InstructionHandle)">contextOf</A></B>(<A HREF="../../../../../org/apache/bcel/generic/InstructionHandle.html">InstructionHandle</A> inst)</CODE><BR> Returns the InstructionContext of a given instruction.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../../../../org/apache/bcel/verifier/structurals/InstructionContext.html">InstructionContext</A>[]</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../../org/apache/bcel/verifier/structurals/ControlFlowGraph.html#contextsOf(org.apache.bcel.generic.InstructionHandle[])">contextsOf</A></B>(<A HREF="../../../../../org/apache/bcel/generic/InstructionHandle.html">InstructionHandle</A>[] insts)</CODE><BR> Returns the InstructionContext[] of a given InstructionHandle[], in a naturally ordered manner.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../../../../org/apache/bcel/verifier/structurals/InstructionContext.html">InstructionContext</A>[]</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../../org/apache/bcel/verifier/structurals/ControlFlowGraph.html#getInstructionContexts()">getInstructionContexts</A></B>()</CODE><BR> Returns an InstructionContext[] with all the InstructionContext instances for the method whose control flow is represented by this ControlFlowGraph <B>(NOT ORDERED!)</B>.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> boolean</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../../org/apache/bcel/verifier/structurals/ControlFlowGraph.html#isDead(org.apache.bcel.generic.InstructionHandle)">isDead</A></B>(<A HREF="../../../../../org/apache/bcel/generic/InstructionHandle.html">InstructionHandle</A> i)</CODE><BR> Returns true, if and only if the said instruction is not reachable; that means, if it not part of this ControlFlowGraph.</TD></TR></TABLE> <A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TD><B>Methods inherited from class java.lang.Object</B></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</CODE></TD></TR></TABLE> <P><!-- ============ FIELD DETAIL =========== --><!-- ========= CONSTRUCTOR DETAIL ======== --><A NAME="constructor_detail"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=1><FONT SIZE="+2"><B>Constructor Detail</B></FONT></TD></TR></TABLE><A NAME="ControlFlowGraph(org.apache.bcel.generic.MethodGen)"><!-- --></A><H3>ControlFlowGraph</H3><PRE>public <B>ControlFlowGraph</B>(<A HREF="../../../../../org/apache/bcel/generic/MethodGen.html">MethodGen</A> method_gen)</PRE><DL><DD>A Control Flow Graph.</DL><!-- ============ METHOD DETAIL ========== --><A NAME="method_detail"><!-- --></A><TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%"><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=1><FONT SIZE="+2"><B>Method Detail</B></FONT></TD></TR></TABLE><A NAME="contextOf(org.apache.bcel.generic.InstructionHandle)"><!-- --></A><H3>contextOf</H3><PRE>public <A HREF="../../../../../org/apache/bcel/verifier/structurals/InstructionContext.html">InstructionContext</A> <B>contextOf</B>(<A HREF="../../../../../org/apache/bcel/generic/InstructionHandle.html">InstructionHandle</A> inst)</PRE><DL><DD>Returns the InstructionContext of a given instruction.</DL><HR><A NAME="contextsOf(org.apache.bcel.generic.InstructionHandle[])"><!-- --></A><H3>contextsOf</H3><PRE>public <A HREF="../../../../../org/apache/bcel/verifier/structurals/InstructionContext.html">InstructionContext</A>[] <B>contextsOf</B>(<A HREF="../../../../../org/apache/bcel/generic/InstructionHandle.html">InstructionHandle</A>[] insts)</PRE><DL><DD>Returns the InstructionContext[] of a given InstructionHandle[], in a naturally ordered manner.</DL><HR><A NAME="getInstructionContexts()"><!-- --></A><H3>getInstructionContexts</H3><PRE>public <A HREF="../../../../../org/apache/bcel/verifier/structurals/InstructionContext.html">InstructionContext</A>[] <B>getInstructionContexts</B>()</PRE><DL><DD>Returns an InstructionContext[] with all the InstructionContext instances for the method whose control flow is represented by this ControlFlowGraph <B>(NOT ORDERED!)</B>.</DL><HR><A NAME="isDead(org.apache.bcel.generic.InstructionHandle)"><!-- --></A><H3>isDead</H3><PRE>public boolean <B>isDead</B>(<A HREF="../../../../../org/apache/bcel/generic/InstructionHandle.html">InstructionHandle</A> i)</PRE><DL><DD>Returns true, if and only if the said instruction is not reachable; that means, if it not part of this ControlFlowGraph.</DL><!-- ========= END OF CLASS DATA ========= --><HR><!-- ========== START OF NAVBAR ========== --><A NAME="navbar_bottom"><!-- --></A><TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0"><TR><TD COLSPAN=2 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"><A NAME="navbar_bottom_firstrow"><!-- --></A><TABLE 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