Manuel Leuenberger wrote
Hi,
I am looking into the RB pattern language for refactoring and I am having trouble matching and replacing non-trivial pattern. Given the following excerpt, I want to match "b shape <rest> ." and replace it with "b shape: [ :x | x <rest> ]"
b shape circle size: 15; color: (Color veryLightGray alpha: 0.4); if: [ :value | toBeRed includes: value ] fillColor: Color red.
How can I do this? I tried using "b shape ``@messages", but this only matches "b shape circle". Using "b shape `message `;middle; `;last" for some reason then also matches the following, which I think it should not:
b edges moveBehind; connectToAll: [ :v | v \\ 20 ~~ 0 ifTrue: [ Array with: v + 1 with: v + 20 ] ifFalse: [ Array with: v + 20 ] ].
There seems not be too much documentation about the pattern language, only found tests, some short help description from RB and Yuriy's MatchTool. How can I match the node correctly?
Cheers, Manuel
The best documentation is at https://refactory.com/rewrite-tool/ What isn't covered, is cascade nodes (`@;messages1), but my first naive attempt did not work as I expected on your example; '(b shape `@method: `@keywords) @;messages1: `@args' -> 'b shape: [ :x | (x `@method: `@keywords) @;messages1: `@args ]' b shape circle size: 15; color: (Color veryLightGray alpha: 0.4); if: [ :value | toBeRed includes: value ] fillColor: Color red -> b shape: [ :x | x circle size: 15 ]; shape: [ :x | x circle color: (Color veryLightGray alpha: 0.4) ]; shape: [ :x | x circle if: [ :value | toBeRed includes: value ] fillColor: Color red ] -- Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html