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Re: [jdt-dev] get name of the anonymous class

And to make the chaos perfect, here is my personal hack to reverse
engineer what the compiler would do with anonymous class names:

https://github.com/iloveeclipse/bytecodeoutline/blob/master/org.eclipse.jdt.bcoview/src/org/eclipse/jdt/bcoview/ui/JdtUtils.java#L968

Note, that the naming convention is not static - it changes depending on
the JLS level used at the compilation time.

HTH

On 11.04.2019 13:20, Marc Hoffmann wrote:
Hi Jay,

we have a similar challenge in the EclEmma code coverage plug-in: We get
binary type names from the JVM and need to map them to the JDT model
elements of Java sources. For this we implemented a interpolation of the
binary names for anonymous inner classes:
https://github.com/eclipse/eclemma/blob/master/org.eclipse.eclemma.core/src/org/eclipse/eclemma/internal/core/analysis/TypeTraverser.java#L186

Not saying that this this works for all cases but here you can see our
positiv test cases:

https://github.com/eclipse/eclemma/blob/master/org.eclipse.eclemma.core.test/src/org/eclipse/eclemma/internal/core/analysis/TypeTraverserTest.java
https://github.com/eclipse/eclemma/blob/master/org.eclipse.eclemma.core.test/testdata/src/typetraverser/Samples.java


Maybe this helps.

Regards,
-marc



On 11. Apr 2019, at 11:53, Jayaprakash Arthanareeswaran
<jarthana@xxxxxxxxxx <mailto:jarthana@xxxxxxxxxx>> wrote:

Unfortunately, Java model elements don't work without the context of a
Java project.
So, yes, it is unlikely to work for you.

Now, I am less hopeful of finding another way. These things (the
anonymous names)
are decided much later in the compilation process and not sure DOM,
which solely
works with source code has the capability to find that. May be others
can correct me
if I am wrong.

Regards,
Jay


<graycol.gif>Alex Lovkov ---11/04/2019 02:46:47 PM---I just tried all methods which return something:) I read in docs: that if I don't use java-plugin, I

From: Alex Lovkov <charmik1994@xxxxxxxxx <mailto:charmik1994@xxxxxxxxx>>
To: Jayaprakash Arthanareeswaran <jarthana@xxxxxxxxxx
<mailto:jarthana@xxxxxxxxxx>>
Cc: "Eclipse JDT general developers list." <jdt-dev@xxxxxxxxxxx
<mailto:jdt-dev@xxxxxxxxxxx>>
Date: 11/04/2019 02:46 PM
Subject: Re: [jdt-dev] get name of the anonymous class

------------------------------------------------------------------------



I just tried all methods which return something:)
I read in docs: that if I don't use java-plugin, I can specify
ASTParser by unitName and Environment, but it didn't help me at all.
.getJavaElement returns null anyway, from your code. So how can I get
real name of anonymous class? Like Main$1$2 for example? Is it really
possible? Thanks!

ÑÑ, 11 ÐÐÑ. 2019 Ð. Ð 06:41, Jayaprakash Arthanareeswaran
<_jarthana@xxxxxxxxxxx <mailto:jarthana@xxxxxxxxxx>>:

    I am surprised it returned non null for a source file. I thought
    the getBinaryName() will return
    anything meaningful only for elements loaded as binaries.

    Jay

    <graycol.gif>Alex Lovkov ---10/04/2019 08:44:45 PM---I got name of
    the anonymous class by this: @Override

    From: Alex Lovkov <_charmik1994@xxxxxxxxxx
    <mailto:charmik1994@xxxxxxxxx>>
    To: Jayaprakash Arthanareeswaran <_jarthana@xxxxxxxxxxx
    <mailto:jarthana@xxxxxxxxxx>>
    Cc: "Eclipse JDT general developers list." <_jdt-dev@xxxxxxxxxxxx
    <mailto:jdt-dev@xxxxxxxxxxx>>
    Date: 10/04/2019 08:44 PM
    Subject: Re: [jdt-dev] get name of the anonymous class
    ------------------------------------------------------------------------



    I got name of the anonymous class by this:
    @Override*
    public**boolean*Âvisit(AnonymousClassDeclaration _node_) {
    ITypeBinding resolveBindingÂ= node.resolveBinding();
    String binaryName = resolveBinding.getBinaryName();*
    return**true*;
    }
    but it gives me wrong name for inner anonymous classes, example:*
    new *Serializable() {*
    void *x() {*
    new *Serializable() {
    };
    }
    };
    it prints Main$1 Main$2, but it should be Main$1 and Main$1$1.
    I get .getJavaElement()=null anyway. Can I fix it without ecpilse
    plugin? Thanks!

    ---------- Forwarded message ---------
    ÐÑ: *Jayaprakash Arthanareeswaran* <_jarthana@xxxxxxxxxxx
    <mailto:jarthana@xxxxxxxxxx>>
    Date: ÑÑ, 10 ÐÐÑ. 2019 Ð. Ð 05:43
    Subject: Re: [jdt-dev] get name of the anonymous class
    To: Eclipse JDT general developers list. <_jdt-dev@xxxxxxxxxxxx
    <mailto:jdt-dev@xxxxxxxxxxx>>
    Cc: ÐÐÐÐÑÐÐÐÑ ÐÐÐÐÐÐ <_charmik1994@xxxxxxxxxx
    <mailto:charmik1994@xxxxxxxxx>>

    One way of achieving that is by using Java model elements, like below:

    @Override*
    public**boolean*visit(AnonymousClassDeclaration _node_) {
    ITypeBinding resolveBinding= node.resolveBinding();
    IType javaElement= (IType) resolveBinding.getJavaElement();
    System.*/out/*.println(javaElement.getFullyQualifiedName());*
    return**true*;
    }

    Jay

    <graycol.gif>"ÐÐÐÐÑÐÐÐÑ ÐÐÐÐÐÐ" ---09/04/2019 10:59:12 PM---Hello,
    I was wondering how can I get the name of the anonymous class
    (exactly "$1", or Main$1) from

    From: "ÐÐÐÐÑÐÐÐÑ ÐÐÐÐÐÐ" <_charmik1994@xxxxxxxxxx
    <mailto:charmik1994@xxxxxxxxx>>
    To: _jdt-dev@xxxxxxxxxxxx <mailto:jdt-dev@xxxxxxxxxxx>
    Date: 09/04/2019 10:59 PM
    Subject: [jdt-dev] get name of the anonymous class
    Sent by: _jdt-dev-bounces@xxxxxxxxxxxx
    <mailto:jdt-dev-bounces@xxxxxxxxxxx>


------------------------------------------------------------------------



    Hello, I was wondering how can I get the name of the anonymous
    class (exactly "$1", or Main$1) from AST, after I parse my source
    file?
    If I try to get the name of the class going recursive to the root
    from the variable, I don't getÂFieldDeclaration -> TypeDeclaration
    as in normal (Z) class, I get the next one:ÂFieldDeclaration ->
    AnonymousClassDeclaration -> ClassInstanceCreation
    and AnonymousClassDeclaration doesn't have any getName() methods.
    So how can I get "$1" by
    AnonymousClassDeclaration/ClassInstanceCreation? thanks!

    example:*
    public class *Main {*
    void *f() {*
    new *Serializable() {*
    public static final *String */T1 /*= *"T1"*;
    };
    }*
    private class *Z *implements *Serializable {*
    public static final *String */T2 /*= *"T2"*;
    }
    }
    ASTParser parser = ASTParser./newParser/(AST.*/JLS11/*);
    parser.setKind(ASTParser.*/K_COMPILATION_UNIT/*);
    parser.setSource(*new *String(Files./readAllBytes/(Paths./get/(*
    "src/main/java/Main.java"*))).toCharArray());
    CompilationUnit unit = (CompilationUnit) parser.createAST(*new
    *NullProgressMonitor());

    ArrayList<FieldDeclaration> fields = *new *ArrayList<>();
    unit.accept(*new *ASTVisitor() {
    @Override*
    public boolean *visit(*final *FieldDeclaration node) {
    fields.add(node);*
    return super*.visit(node);
    }
    });
    FieldDeclaration fieldDeclaration_T1 = fields.get(0);
    FieldDeclaration fieldDeclaration_T2 = fields.get(1);
    ASTNode T1parent = fieldDeclaration_T1.getParent();
    ///AnonymousClassDeclaration here (can't get $1)/
    ASTNode T2parent = fieldDeclaration_T2.getParent();
    ///TypeDeclaration here. can use .getName() to get a name of
    nested class) cl/
    --
    Sincerely, Alex_______________________________________________
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