Abstract
This paper presents a programming framework for incorporating XPath queries into the functional-logic language \(\mathcal{TOY}\). The proposal exploits the language characteristics, including non-determinism, logic variables, and higher-order functions and patterns. Our setting covers a wide range of standard XPath axes and tests. In particular reverse axes are implemented thanks to the double nature of XPath queries, which are both higher-order functions and data terms in our setting. The combination of these two different worlds, the functional-logic paradigm and the XML query language XPath, is very enriching for both of them. From the point of view of functional-logic programming, the language is now able to deal with XML documents in a very simple way. From the point of view of XPath, our approach presents several nice properties as the generation of XML test-cases for XPath queries, which can be useful for finding bugs in erroneous queries.
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Caballero, R., García-Ruiz, Y., Sáenz-Pérez, F. (2011). Integrating XPath with the Functional-Logic Language Toy. In: Rocha, R., Launchbury, J. (eds) Practical Aspects of Declarative Languages. PADL 2011. Lecture Notes in Computer Science, vol 6539. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-18378-2_13
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DOI: https://doi.org/10.1007/978-3-642-18378-2_13
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