Type directed compilation of row-typed algebraic effects

Daan Leijen
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引用次数: 113

Abstract

Algebraic effect handlers, introduced by Plotkin and Power in 2002, are recently gaining in popularity as a purely functional approach to modeling effects. In this article, we give a full overview of practical algebraic effects in the context of a compiled implementation in the Koka language. In particular, we show how algebraic effects generalize over common constructs like exception handling, state, iterators and async-await. We give an effective type inference algorithm based on extensible effect rows using scoped labels, and a direct operational semantics. Finally, we show an efficient compilation scheme to common runtime platforms (like JavaScript) using a type directed selective CPS translation.
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行类型代数效应的类型定向编译
由Plotkin和Power于2002年引入的代数效果处理程序,最近作为一种纯功能的建模效果方法而受到欢迎。在本文中,我们将全面概述在Koka语言的编译实现上下文中的实际代数效果。特别是,我们展示了代数效果是如何泛化到异常处理、状态、迭代器和async-await等常见结构上的。给出了一种有效的基于可扩展效果行的类型推断算法,该算法使用了范围标签,并给出了一种直接的操作语义。最后,我们将展示一种针对常见运行时平台(如JavaScript)的高效编译方案,该方案使用类型导向的选择性CPS翻译。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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