http://cvs.sourceforge.net/cgi-bin/viewcvs.cgi/repast-jellytag/repast-jelly-taglibrary/src/org/apache/commons/jelly/tags/bcel/ClassExtender.java?rev=1.1&content-type=text/vnd.viewcvs-markup
see the createSetterMethod(...)
Also start learning to use BCELifier in the BCEL util library, the class is a "Godsend"! You can write a demo class that has the code you what to generate, then run it through BCELifier to see what the BCEL code would look like to generate that Class.
-Mark
Stephen Kolaroff wrote:
Hi I began my work w/ bcel with your problem. IBelow is a method a wrote. Investigate and enjoy:
void createAccessor(ClassGen cg, Field f) { ConstantPoolGen cpg = cg.getConstantPool(); int accessFlags = f.getAccessFlags(); FieldGen fg = new FieldGen(f, cpg); InstructionList il = new InstructionList();
String accessorName = createWrapperName(f.getName(), true);
MethodGen accessor = new MethodGen(accessFlags,
fg.getType(),
new Type[] {},
new String[] {},
accessorName,
cg.getClassName(),
il,
cpg);
InstructionFactory ins = new InstructionFactory(cg, cpg);
il.append(ins.ALOAD_0);
il.append(ins.createGetField(cg.getClassName(), fg.getName(), fg.getType()));
il.append(ins.createReturn(fg.getType()));
// must be after the whole method is ready accessor.setMaxLocals(); accessor.setMaxStack();
cg.addMethod(accessor.getMethod()); }
Sapan Shah wrote:
Hi,
I want to generate the code for a method like
public String getName(){ return this.name; }
I am successful in creating the method using the MethodGen class, but am not
able to figure out,
how do i create the instruction within and get an access to this and then
the name variable. After that, how do i pass the returnInstruction.
I tried using the InstructionFactory.createReturn() method, but i guess, it
will only get the instruction. how do i get the variable on which the
instruction is to be executed.
If you could please help me. Any code snippet would be highly appreciated.
Thanks and Regards, ------------------------------------ Sapan Shah Software Engineer Patni Computer Systems Limited A 78/9 GIDC Electronics Estate, Sector 25, Gandhinagar mob: (+91)98240 59280 http://www.patni.com World-Wide Partnerships. World-Class Solutions
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