Python Parser Tests refactoring: RBParseTreeRewritter

gistfile1.st

| rewrite |
rewrite := RBParseTreeRewriter new
	replace: 'self parse: `#l `{:node :dic |
		| n |
		n := ''source'' , (node methodNode selector allButFirst: 4).
		dic at: #n put: n.
		PythonParserTests compile: (RBParser parseMethod: n, '' ^ '', `#l newSource) formattedCode classified: ''resources''.
		true }'
	with: 'self parse: `{:dic |
		RBParser parseExpression: ''self '', (dic at: #n) }'.
PythonParserTests methods
	do: [ :e |
		(rewrite executeTree: (RBParser parseMethod: e sourceCode))
			ifTrue: [ PythonParserTests compile: rewrite tree newSource ] ]

Using RBParseTreeRewritter:

• matching with RB patterns
• adding some smalltalk code to the matching code to create additional methods
• using it to change over 300 methods in one go