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Bug 330826

Summary: ASTMatcher should return the difference between ASTs
Product: [Eclipse Project] JDT Reporter: Raffi Khatchadourian <raffi.khatchadourian>
Component: CoreAssignee: JDT-Core-Inbox <jdt-core-inbox>
Status: NEW --- QA Contact:
Severity: enhancement    
Priority: P3 CC: deepakazad, raffi.khatchadourian
Version: 3.3.2   
Target Milestone: ---   
Hardware: All   
OS: All   
Whiteboard:

Description Raffi Khatchadourian CLA 2010-11-22 11:42:25 EST 
Build Identifier: 20100917-0705

Currently, the org.eclipse.jdt.core.dom.ASTMatcher discovers whether two AST nodes, including their subtrees, are the same. Thus, the match methods return booleans. However, it would be much more usual to return something other than booleans here, namely, information pertaining to the difference between the ASTs in the case that they differ. For example, the match methods could return something like an ASTDifferenceDescriptor, which would include information pertaining to the exact nodes and their positions in the tree that were different.

Reproducible: Always
Comment 1 Raffi Khatchadourian CLA 2010-11-22 11:54:20 EST 
Even just returning the first node that was found to be different would be helpful.