Re:

Hi Robert,
ModuleVisitor has a method visitEnd() that is called after having seen all values,

so a code like this should work.
new ModuleVisitor(ASM6, parent) {
    private String mainClass = moduleMainClass;  // default main class

    public void visitMainClass(String mainClass) {
        this.mainClass = mainClass;             // extracted main class
    }

    public void visitEnd() {
        super.visitMainClass(mainClass);      // set the main class
    }
};

cheers,
Rémi

----- Mail original -----
> De: "Robert Scholte" <[email protected]>
> À: "asm" <[email protected]>
> Envoyé: Samedi 26 Août 2017 18:53:56
> Objet: [asm]

> Hi,
> 
> I'm trying to add some extra information to the module-info.class like done by
> the jar executable of the jdk. In my case plexus-archiver is responsible for
> creating the jar.
> 
> With the following code I get the following error: CONSTANT_Class at entry 9
> has illegal character: '.'
> 
> How should I change the following code?
> 
>                final String moduleVersion = "1.0.0"
> 
>                final String moduleMainClass = "org.foo.bar.Main";
> 
>                ClassReader reader = new ClassReader( is );
> 
>                ClassWriter writer = new
> ClassWriter( ClassWriter.COMPUTE_FRAMES );
> 
>                ClassVisitor classVisitor = new ClassVisitor( Opcodes.ASM6,
> writer )
>                {
>                    @Override
>                    public ModuleVisitor visitModule( String name, int access,
> String __ )
>                    {
>                        ModuleVisitor parent = super.visitModule( name,
> access, moduleVersion );
> 
>                        ModuleVisitor visitor = new
> ModuleVisitor( Opcodes.ASM6, parent )
>                        {
>                            boolean visitMainClassCalled;
> 
>                            @Override
>                            public void visitMainClass( String __ )
>                            {
>                                if ( !visitMainClassCalled )
>                                {
>                                    super.visitMainClass( moduleMainClass );
>                                    visitMainClassCalled = true;
>                                }
>                            }
>                        };
>                        visitor.visitMainClass( moduleMainClass );
> 
>                        return visitor;
>                    }
>                };
> 
>                reader.accept( classVisitor, Opcodes.ASM6 );
> 
>                return new ByteArrayInputStream( writer.toByteArray() );
> 
> 
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