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IType.getMethod and signature from bytecode [message #650831]

Wed, 26 January 2011 13:11

Eclipse User

Hello,
I've got a problem with getMethod() method of IType

I have a signature of specific method from bytecode.

For example:
(Ljava.lang.Integer;Ljava.lang.Integer)I

I want to use it in in
IType.getMethod(String methodName, String[] signatureParameters);

Eclipse doesn't recognize a type, but parameter that is in source code (e.g. java.lang.String != String)

Is there a way to get method if I don't know how developer wrote the type?

Thanks in advance!

Re: IType.getMethod and signature from bytecode [message #650906 is a reply to message #650831]

Thu, 27 January 2011 01:55

Eclipse User

Hi,

I do not understand you,can you explain more,thanks!

Re: IType.getMethod and signature from bytecode [message #650933 is a reply to message #650906]

Thu, 27 January 2011 03:45

Eclipse User

I analyze bytecode of java and I have method descriptor

for example:
method name: add
method descriptor (Ljava.lang.Integer;Ljava.lang.Integer)Ljava.lang.Integer;

it can be read as: Integer add (Integer , Integer)

I want to add a marker in a line there method signature is in source code

for example:

-> public Integer add(java.lang.Integer a, Integer b) {

}

where -> is a marker I want to add.

IType interface defines IMethod getMethod(String methodName, String[] signatureParameters);

but signatureParameters are not these from bytecode (e.g. Ljava.lang.Integer) but for example QInteger or Qjava.lang.Integer (depends on how it's defined in source code)

for "a" and "b" parameters in my example above it would be Qjava.lang.Integer; and QInteger; respectively.

My question is:
Is there a way to convert values from bytecode or somehow find particular method having only bytecode (always fully-qualified) parameter names.
for "b".

The best solution would be:

myClass.getMethod("add", new String[] {"Ljava.lang.Integer;", "Ljava.lang.Integer;"});

but it doesn't work (It needs Eclipse specific signatures).

If it's not clear please tell me what should I describe in detail.

[Updated on: Thu, 27 January 2011 03:45] by Moderator

Re: IType.getMethod and signature from bytecode [message #650956 is a reply to message #650933]

Thu, 27 January 2011 05:04

Eclipse User

finally,I got what do you mean,I think you should post it on JDT instead of PDT

Re: IType.getMethod and signature from bytecode [message #653171 is a reply to message #650831]

Tue, 08 February 2011 13:09

Eclipse User

On 1/26/2011 1:11 PM, emPl wrote:
> Hello,
> I've got a problem with getMethod() method of IType
> I have a signature of specific method from bytecode.
>
> For example:
> (Ljava.lang.Integer;Ljava.lang.Integer)I

You might want the JDT newsgroup instead of the PDT newsgroup.

--
Nitin Dahyabhai
Eclipse WTP Source Editing and JSDT
IBM Rational

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