localvariablegen.html

一个用于对.class文件进行插桩的开源工具

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<A NAME="LocalVariableGen(int, java.lang.String, org.apache.bcel.generic.Type, org.apache.bcel.generic.InstructionHandle, org.apache.bcel.generic.InstructionHandle)"><!-- --></A><H3>
LocalVariableGen</H3>
<PRE>
public <B>LocalVariableGen</B>(int&nbsp;index,
                        java.lang.String&nbsp;name,
                        <A HREF="../../../../org/apache/bcel/generic/Type.html">Type</A>&nbsp;type,
                        <A HREF="../../../../org/apache/bcel/generic/InstructionHandle.html">InstructionHandle</A>&nbsp;start,
                        <A HREF="../../../../org/apache/bcel/generic/InstructionHandle.html">InstructionHandle</A>&nbsp;end)</PRE>
<DL>
<DD>Generate a local variable that with index `index'. Note that double and long
 variables need two indexs. Index indices have to be provided by the user.<DD><DL>
<DT><B>Parameters:</B><DD><CODE>index</CODE> - index of local variable<DD><CODE>name</CODE> - its name<DD><CODE>type</CODE> - its type<DD><CODE>start</CODE> - from where the instruction is valid (null means from the start)<DD><CODE>end</CODE> - until where the instruction is valid (null means to the end)</DL>
</DD>
</DL>

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<B>Method Detail</B></FONT></TD>
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<A NAME="getLocalVariable(org.apache.bcel.generic.ConstantPoolGen)"><!-- --></A><H3>
getLocalVariable</H3>
<PRE>
public <A HREF="../../../../org/apache/bcel/classfile/LocalVariable.html">LocalVariable</A> <B>getLocalVariable</B>(<A HREF="../../../../org/apache/bcel/generic/ConstantPoolGen.html">ConstantPoolGen</A>&nbsp;cp)</PRE>
<DL>
<DD>Get LocalVariable object.

 This relies on that the instruction list has already been dumped to byte code or
 or that the `setPositions' methods has been called for the instruction list.

 Note that for local variables whose scope end at the last
 instruction of the method's code, the JVM specification is ambiguous:
 both a start_pc+length ending at the last instruction and
 start_pc+length ending at first index beyond the end of the code are
 valid.<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>il</CODE> - instruction list (byte code) which this variable belongs to<DD><CODE>cp</CODE> - constant pool</DL>
</DD>
</DL>
<HR>

<A NAME="setIndex(int)"><!-- --></A><H3>
setIndex</H3>
<PRE>
public void <B>setIndex</B>(int&nbsp;index)</PRE>
<DL>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="getIndex()"><!-- --></A><H3>
getIndex</H3>
<PRE>
public int <B>getIndex</B>()</PRE>
<DL>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="setName(java.lang.String)"><!-- --></A><H3>
setName</H3>
<PRE>
public void <B>setName</B>(java.lang.String&nbsp;name)</PRE>
<DL>
<DD><DL>
<DT><B>Specified by: </B><DD><CODE><A HREF="../../../../org/apache/bcel/generic/NamedAndTyped.html#setName(java.lang.String)">setName</A></CODE> in interface <CODE><A HREF="../../../../org/apache/bcel/generic/NamedAndTyped.html">NamedAndTyped</A></CODE></DL>
</DD>
</DL>
<HR>

<A NAME="getName()"><!-- --></A><H3>
getName</H3>
<PRE>
public java.lang.String <B>getName</B>()</PRE>
<DL>
<DD><DL>
<DT><B>Specified by: </B><DD><CODE><A HREF="../../../../org/apache/bcel/generic/NamedAndTyped.html#getName()">getName</A></CODE> in interface <CODE><A HREF="../../../../org/apache/bcel/generic/NamedAndTyped.html">NamedAndTyped</A></CODE></DL>
</DD>
</DL>
<HR>

<A NAME="setType(org.apache.bcel.generic.Type)"><!-- --></A><H3>
setType</H3>
<PRE>
public void <B>setType</B>(<A HREF="../../../../org/apache/bcel/generic/Type.html">Type</A>&nbsp;type)</PRE>
<DL>
<DD><DL>
<DT><B>Specified by: </B><DD><CODE><A HREF="../../../../org/apache/bcel/generic/NamedAndTyped.html#setType(org.apache.bcel.generic.Type)">setType</A></CODE> in interface <CODE><A HREF="../../../../org/apache/bcel/generic/NamedAndTyped.html">NamedAndTyped</A></CODE></DL>
</DD>
</DL>
<HR>

<A NAME="getType()"><!-- --></A><H3>
getType</H3>
<PRE>
public <A HREF="../../../../org/apache/bcel/generic/Type.html">Type</A> <B>getType</B>()</PRE>
<DL>
<DD><DL>
<DT><B>Specified by: </B><DD><CODE><A HREF="../../../../org/apache/bcel/generic/NamedAndTyped.html#getType()">getType</A></CODE> in interface <CODE><A HREF="../../../../org/apache/bcel/generic/NamedAndTyped.html">NamedAndTyped</A></CODE></DL>
</DD>
</DL>
<HR>

<A NAME="getStart()"><!-- --></A><H3>
getStart</H3>
<PRE>
public <A HREF="../../../../org/apache/bcel/generic/InstructionHandle.html">InstructionHandle</A> <B>getStart</B>()</PRE>
<DL>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="getEnd()"><!-- --></A><H3>
getEnd</H3>
<PRE>
public <A HREF="../../../../org/apache/bcel/generic/InstructionHandle.html">InstructionHandle</A> <B>getEnd</B>()</PRE>
<DL>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="setStart(org.apache.bcel.generic.InstructionHandle)"><!-- --></A><H3>
setStart</H3>
<PRE>
public void <B>setStart</B>(<A HREF="../../../../org/apache/bcel/generic/InstructionHandle.html">InstructionHandle</A>&nbsp;start)</PRE>
<DL>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="setEnd(org.apache.bcel.generic.InstructionHandle)"><!-- --></A><H3>
setEnd</H3>
<PRE>
public void <B>setEnd</B>(<A HREF="../../../../org/apache/bcel/generic/InstructionHandle.html">InstructionHandle</A>&nbsp;end)</PRE>
<DL>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="updateTarget(org.apache.bcel.generic.InstructionHandle, org.apache.bcel.generic.InstructionHandle)"><!-- --></A><H3>
updateTarget</H3>
<PRE>
public void <B>updateTarget</B>(<A HREF="../../../../org/apache/bcel/generic/InstructionHandle.html">InstructionHandle</A>&nbsp;old_ih,
                         <A HREF="../../../../org/apache/bcel/generic/InstructionHandle.html">InstructionHandle</A>&nbsp;new_ih)</PRE>
<DL>
<DD><DL>
<DT><B>Specified by: </B><DD><CODE><A HREF="../../../../org/apache/bcel/generic/InstructionTargeter.html#updateTarget(org.apache.bcel.generic.InstructionHandle, org.apache.bcel.generic.InstructionHandle)">updateTarget</A></CODE> in interface <CODE><A HREF="../../../../org/apache/bcel/generic/InstructionTargeter.html">InstructionTargeter</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>old_ih</CODE> - old target, either start or end<DD><CODE>new_ih</CODE> - new target</DL>
</DD>
</DL>
<HR>

<A NAME="containsTarget(org.apache.bcel.generic.InstructionHandle)"><!-- --></A><H3>
containsTarget</H3>
<PRE>
public boolean <B>containsTarget</B>(<A HREF="../../../../org/apache/bcel/generic/InstructionHandle.html">InstructionHandle</A>&nbsp;ih)</PRE>
<DL>
<DD><DL>
<DT><B>Specified by: </B><DD><CODE><A HREF="../../../../org/apache/bcel/generic/InstructionTargeter.html#containsTarget(org.apache.bcel.generic.InstructionHandle)">containsTarget</A></CODE> in interface <CODE><A HREF="../../../../org/apache/bcel/generic/InstructionTargeter.html">InstructionTargeter</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>true, if ih is target of this variable</DL>
</DD>
</DL>
<HR>

<A NAME="equals(java.lang.Object)"><!-- --></A><H3>
equals</H3>
<PRE>
public boolean <B>equals</B>(java.lang.Object&nbsp;o)</PRE>
<DL>
<DD>We consider to local variables to be equal, if the use the same index and
 are valid in the same range.<DD><DL>
<DT><B>Overrides:</B><DD><CODE>equals</CODE> in class <CODE>java.lang.Object</CODE></DL>
</DD>
</DL>
<HR>

<A NAME="toString()"><!-- --></A><H3>
toString</H3>
<PRE>
public java.lang.String <B>toString</B>()</PRE>
<DL>
<DD><DL>
<DT><B>Overrides:</B><DD><CODE>toString</CODE> in class <CODE>java.lang.Object</CODE></DL>
</DD>
</DL>
<HR>

<A NAME="clone()"><!-- --></A><H3>
clone</H3>
<PRE>
public java.lang.Object <B>clone</B>()</PRE>
<DL>
<DD><DL>
<DT><B>Overrides:</B><DD><CODE>clone</CODE> in class <CODE>java.lang.Object</CODE></DL>
</DD>
</DL>
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