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Where does JDT set the errors with the arguments when a compilation fails [message #786043]

Sun, 29 January 2012 23:15

Fabrice Marcelin

Messages: 15
Registered: February 2011
Location: USA

Junior Member

Hello there,
My question concerns the whole compilation process in eclipse. I'm hoping that anyone could shed some light on the subject. Correct me if I'm wrong, when eclipse is compiling a project or a file it goes to those steps:
EclipseCompiler that implements JavaCompiler calls EclipseCompilerImpl, which extends Main. The latter calls the function beginCompilation in the Compiler class that implements ITypeRequestor and ProblemSeverities.
Now my primarily concern is about when the compiler finds an error. It seems like the compiler calls AbortCompilation that extends RuntineException but I am not sure where the compiler stores the error arguments, messages and what not.
Also, for the problemID: 67108964, with the message: "The method XXX is undefined for the type YYY" the getArguments() method only returns the type of the variable. Is there a way to get the name of the variable?

Thanks.

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Re: Where does JDT set the errors with the arguments when a compilation fails [message #786328 is a reply to message #786043]

Mon, 30 January 2012 09:20

Satyam Kandula

Messages: 444
Registered: July 2009

Senior Member

From the IDE, EclipseCompiler is not the main entry point but JavaBuilder#build() is the one which triggers the build. This ends up calling org.eclipse.jdt.internal.compiler.Compiler.compile(ICompilationUnit[]). For any error or warning, the compiler creates a Problem which eventually becomes the Eclipse Marker.

ProblemReporter contains the information that the compiler puts for different errors. There need not be any variable for this kind of message and even so do you see the need for it? As of now, the name of the variable is not being stored in the problem structure. However, as the source positions of the error is also part of the Problem message, one can find out the variable name.

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Re: Where does JDT set the errors with the arguments when a compilation fails [message #789205 is a reply to message #786328]

Thu, 02 February 2012 18:29

Fabrice Marcelin

Messages: 15
Registered: February 2011
Location: USA

Junior Member

@Satyam Thanks for your reply. As for your question, yes I do need it and I think I will consider taking your advice. However, I've been searching online and I couldn't find any example as to how to traverse the AST given its getSourceStart(). Would you be able to explain me or provide any useful link on that subject?
Thanks

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