JOIN(X): Constraint-Based Type Inference for the Join-Calculus

  • Sylvain Conchon
  • François Pottier
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 2028)


We present a generic constraint-based type system for the join-calculus. The key issue is type generalization, which, in the presence of concurrency, must be restricted.We first define a liberal generalization criterion, and prove it correct. Then, we find that it hinders type inference, and propose a cruder one, reminiscent of ML’s value restriction. We establish type safety using a emsemi-syntactic technique, which we believe is of independent interest. It consists in interpreting typing judgements as (sets of) judgements in an underlying system, which itself is given a syntactic soundness proof.


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Copyright information

© Springer-Verlag Berlin Heidelberg 2001

Authors and Affiliations

  • Sylvain Conchon
    • 1
  • François Pottier
    • 1
  1. 1.INRIARocquencourt

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