[news.eclipse.tools.emf] Re: JMerge customization

["Timothy Marc" <timothymarc@xxxxxxxxxx>]

Okay,
for everyone, how is interested in this discussion, i've found the problem 
with the ASTJCompilationUnit parser.

1. The parser didn't accept the single line comments in the 
CompilationUnit's content. So, a snippet like this:

    //a comment
    System.out.println("What the hell?");

will cause an exception with the message ("Syntax error.insert } to complete 
class body"). Both inside of a method body and in the class body. But you 
can use the multiline comments.

    /*a comment */
    System.out.println("What the hell?");

produces the correct JAST. Currently, i'm working with EMF 2.3, may be this 
is erased in a later version?
Or is there a flag, which has to be set for enabling // comments? IMHO, this 
kind of parsing is not feasibleö

And thank you very much, Ed, for concrete help.

Thx
Timothy



"Ed Merks" <Ed.Merks@xxxxxxxxx> schrieb im Newsbeitrag 
news:gbb87n$ldt$1@xxxxxxxxxxxxxxxxxxxx
Timonthy,

I doubt the tools are making it up.  The diagnostic that's created has the 
string with the contents, so look closely at those...


Timothy Marc wrote:
Ed,
indeed, you're right. The IProblem says, that the ClassBody contains a
missing "}", but that isn't so in real, because the java file i want to
parse is a valid file in a working project without syntax errors.
Why does this error appears?
Thx
Timothy

"Ed Merks" <Ed.Merks@xxxxxxxxx> schrieb im Newsbeitrag
news:gbarvg$bkt$1@xxxxxxxxxxxxxxxxxxxx

Timothy,

Try setting a breakpoint in ASTFacadeHelper.analyzeCompilationUnit and see
what IProblems are reported.  Perhaps you're generating code with syntax
errors?


Timothy Marc wrote:

Dear Marcelo,

okay, so here is my first question. Before, i tell you, what i planned
with Jmerge to do:

I want to reuse the JAST from JMerge, for manual analyzation of a Java
file. I didn't want to create Target/SourceCompilationUnit, because i
didn't want to use the JMerge algorithm for merging. All i need is a
JCompilationUnit, which i can traverse like i've mentioned in the snippet
below within the for-loop. Therefore, i used the following code snippet:

final File f = new
File("F:/TFH/SE/de.freundwendland.tfh.se.JMergeCodeGeneration/src/jmerge/importWizards/ImportWizardPage.java");
final File rules = new
File("F:/TFH/SE/de.freundwendland.tfh.se.JMergeCodeGeneration/mergeRules.xml");
JControlModel model = new JControlModel();
ASTFacadeHelper helper = new ASTFacadeHelper();
model.initialize(helper, rules.toURI().toString());
JMerger merger = new JMerger(model);
JCompilationUnit unit =
merger.createCompilationUnitForURI(f.toURI().toString()); //causes an
exception
ASTJCompilationUnit junit = helper.createCompilationUnit("Test",
unit.getContents());
for(final JNode o:junit.getChildren()){
    if(o instanceof JMethod){
        System.out.println(o.getQualifiedName());
    }
}

Nothing unusual, as i think. But the process fails with the following,
nut interpretable error message for me:
org.eclipse.emf.common.util.WrappedException:
org.eclipse.emf.common.util.DiagnosticException: A problem was detected
while parsing a Java file

at
org.eclipse.emf.codegen.merge.java.facade.ast.ASTFacadeHelper.createCompilationUnit(ASTFacadeHelper.java:282)

at
org.eclipse.emf.codegen.merge.java.facade.ast.ASTFacadeHelper.createCompilationUnit(ASTFacadeHelper.java:1)

at
org.eclipse.emf.codegen.merge.java.JMerger.createCompilationUnitForURI(JMerger.java:368)

at
org.eclipse.emf.codegen.merge.java.JMerger.createCompilationUnitForURI(JMerger.java:343)


So, does anyone or you know, why that happens? I've introspect the
related codeline in the createCompilationUnit... method, but didn't get
it.

Thx
Timothy