JDK-8048890 : Add option to keep track of symbol completion dependencies
  • Type: Enhancement
  • Component: tools
  • Sub-Component: javac
  • Affected Version: 9
  • Priority: P4
  • Status: Closed
  • Resolution: Fixed
  • Submitted: 2014-07-01
  • Updated: 2014-08-29
  • Resolved: 2014-07-24
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JDK 9
9 b26Fixed
Related Reports
Relates :  
JDK-7101822 - Compiling depends on order of imports
Relates :  
JDK-8056066 - JEP 216: Process Import Statements Correctly
Relates :  
JDK-8048609 - simplify sjavac dependence on javac dependency gathering
Description
When reasoning about convoluted examples containing one or more symbol completion 'races', it is often useful to visualize the completion process in terms of a dependency graph. It would be nice if javac could be able to generate such a graph automatically. Attached is an example of source code and corresponding dependency graph.

This could be useful for both debugging and testing.
Comments
There should be a class in javac keeping track of all completion actions triggered during MemberEnter and ClassReader. When javac terminates, such dependencies could be flushes in a dot file - this could be done either by adding the class to the list of javac's Closeables or by having the class register itself as a TaskListener.
01-07-2014