back_reference.py File Reference

Demonstrates two modes of back referencing. More...

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Namespaces
	examples.basics.back_reference

Variables
string	examples.basics.back_reference.title
string	examples.basics.back_reference.usyntax
string	examples.basics.back_reference.rsyntax
string	examples.basics.back_reference.rssyntax
	examples.basics.back_reference.api = Api()
	examples.basics.back_reference.grammar = api.generate(usyntax)
	examples.basics.back_reference.parser = Parser(grammar)
string	examples.basics.back_reference.input = '<level1><level2><level3></level3></level3></level3>'
	examples.basics.back_reference.result = parser.parse(utils.string_to_tuple(input))
	examples.basics.back_reference.end

Detailed Description

Demonstrates two modes of back referencing.

• "universal" mode - The back reference matches the last of all previously matched phrases regardless of where on the parse tree it occurred.
• "recursive" mode - The back reference matches the previously matched phrase which has the same recursive rule parent node.

Definition in file back_reference.py.