Bug 182338

Description Marcelo Paternostro 2007-04-13 11:14:33 EDT

EMF has a merge tool that is based on AST.  In M6 all our tests were OK but now, with I20070410-1043, they are failing.  Olivier has analyzed the problem and narrowed down the problem to the class mentioned in the Summary.

To set up your environment with the EMF tests you will need the 2 files attached here.

The psf file extracts 2 EMF plugins into your workspace (use anonymous as the user and an empty password).  The zip contains a project with the test cases and a test launcher.  After importing the contents of the zip, open the Run Dialog, expand "JUnit Plugin Test" and select "Test EMF Tools".  This runs 105 tests.  Although they are OK in M6, in I20070410-1043 you should get 1 error and 8 failures.

I may be wrong but I think the test case  "AST Facade Test Suite -> Types Test -> testMoveAndModify1" is the best place for you to start.  This test reads the "Source.java" file located on "/org.eclipse.emf.test.tools/data/facade.ast/TypesTest" and applies a set of changes that should generate the contents of the file "TestMoveAndModify1.java" located in the same directory.  

Trying to give you some pointers about our code...  

- You will notice that we read and manipulate the nodes in a Java file through a set of interfaces located in "org.eclipse.emf.codegen.merge.java.facade".  This facade allows our Java merger tool to work with both JDOM and AST.  The AST facade implementation is located in "org.eclipse.emf.codegen.merge.java.facade.ast".

- Some important methods and classes in the AST facade implementation are:

org.eclipse.emf.codegen.merge.java.facade.ast.ASTFacadeHelper.createCompilationUnit(String, String)

org.eclipse.emf.codegen.merge.java.facade.ast.CommentAwareSourceRangeComputer