Acta Informatica

, Volume 26, Issue 1–2, pp 131–192 | Cite as

High level tree transducers and iterated pushdown tree transducers

  • Joost Engelfriet
  • Heiko Vogler


n-level tree transducers (n≧0) combine the features ofn-level tree grammars and of top-down tree transducers in the sense that the derivations of the tree grammars are syntax-directed by input trees. For runningn, the sequence ofn-level tree transducers starts with top-down tree transducers (n=0) and macro tree transducers (n=1). In this paper the class of tree-to-tree translations computed byn-level tree transducers is characterized byn-iterated pushdown tree transducers. Such a transducer can be considered as a regular tree grammar of which the derivations are syntax-directed byn-iterated pushdowns of trees; ann-iterated pushdown of trees is a pushdown of pushdowns of ... of pushdowns (n times) of trees. In particular, we investigate the total deterministic case, which is relevant for syntax-directed semantics of programming languages.


Boolean Expression Input Tree Finite Restriction Tree Automaton Storage Type 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer-Verlag 1988

Authors and Affiliations

  • Joost Engelfriet
    • 1
  • Heiko Vogler
    • 1
  1. 1.Department of Mathematics and Computer ScienceUniversity of LeidenLeidenThe Netherlands

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