Method and apparatus for document transformation based on attribute grammars and attribute couplings

摘要

A method and apparatus are provided for converting a first document to a second document. The first document is in a first extended attribute grammar, while the second document is in a second extended attribute grammar. An extended attribute coupling grammar couples the first and second extended attribute grammars. The first document is converted to a first tree, which is partially copied to a first copy. The first copy is completed by evaluating it's attribute with respect to the extended attribute coupling grammar. The first copy is then a partially attributed tree of the second document. The partially attributed tree is completed to form a second tree based on the second extended attribute grammar. The second tree is then converted to the second document.