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POPL 2019
Sun 13 - Sat 19 January 2019 Cascais, Portugal
Tue 15 Jan 2019 14:00 - 14:30 at Sala IV - PADL Session 5

Creating a programming language is a considerable undertaking, even for relatively small domain-specific languages (DSLs). Most approaches to ease this task either limit the flexibility of the DSL or consider entire languages as the unit of composition. This paper presents a new approach using syntactical constructs (also called syncons) for defining DSLs in much smaller units of composition while retaining flexibility. A syntactical construct defines a single language feature, such as an if statement or an anonymous function. Each syntactical construct is fully self-contained: it specifies its own concrete syntax, binding semantics, and runtime semantics, independently of the rest of the language. The runtime semantics are specified as a translation to a user defined target language, while the binding semantics allow name resolution before expansion. Additionally, we present a novel approach for dealing with syntactical ambiguity that arises when combining languages, even if the languages are individually unambiguous. The work is implemented and evaluated in a case study, where small subsets of OCaml and Lua have been defined and composed using syntactical constructs.

Tue 15 Jan
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14:00 - 15:30: PADL 2019 - PADL Session 5 at Sala IV
PADL-201914:00 - 14:30
David BromanKTH Royal Institute of Technology, Viktor PalmkvistKTH Royal Institute of Technology
DOI Media Attached
PADL-201914:30 - 15:00
Christopher SchwaabUniversity of St Andrews, Ekaterina KomendantskayaHeriot-Watt University, UK, Alasdair Hill, Frantisek Farka, Ron Petrick, Joe Wells, Kevin HammondUniversity of St. Andrews, UK
PADL-201915:00 - 15:30
Paul TarauUniversity of North Texas