[Spoon-discuss] code creation using factories

[Renaud Pawlak]

It should work. I am not sure about the  "java.lang.System.out" format
(that it the problem when using strings). Check that it creates the
right reference.


On Sun, Nov 9, 2008 at 7:21 PM, Jakub Mikulski <kuba.mikulski at gmail.com> wrote:
> Thanks for your reply, but there still is a problem. The line:
>
> f.Field().createReference("java.lang.System.out");
>
> creates a CtFieldReference, while the first argument to createInvocation
> needs to be a CtExpression - how do I fix that? I've been trying something
> like this:
>
> CtFieldReference<?> streamRef =
> f.Field().createReference("java.lang.System.out");
> CtExpression<?> itarget = f.Code().createVariableAccess(streamRef, true);
>
> Unfortunately, it doesn't work... Any help would be appreciated.
>
> Regards,
> km
>
> Renaud Pawlak pisze:
>>
>> Hi,
>>
>> You are missing the target and the arguments of the invocation. You
>> should avoid the core factory methods because they are too simple...
>>
>> Factory f=...;
>>
>>
>> f.Code().createInvocation(f.Field().createReference("java.lang.System.out"),
>> f.Executable().createReference("void
>> java.io.PrintStream.println(java.lang.String)"),
>> f.Code().createLiteral("hello world"));
>>
>> Note1: I am not so sure about the format of the strings.. to be
>> checked in the code if anything goes wrong.
>>
>> Note2: you can also use code snippets to create simple code... it is
>> of course not very nice (no AST there) but simpler to write...
>>
>> f.Code().createCodeSnippetExpression(java.lang.System.out.println("hello
>> world"));
>>
>> Note3: the cleanest and checked way it through templates, of course.
>>
>> Cheers,
>> /Renaud
>>
>>
>
>
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Renaud Pawlak, Professor
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