The Meta in Meta-object Architectures

13 years 11 months ago

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Abstract. Behavioral reﬂection is crucial to support for example functional upgrades, on-the-ﬂy debugging, or monitoring critical applications. However the use of reﬂective features can lead to severe problems due to inﬁnite meta-call recursion even in simple cases. This is especially a problem when reﬂecting on core language features since there is a high chance that such features are used to implement the reﬂective behavior itself. In this paper we analyze the problem of inﬁnite meta-object call recursion and solve it by providing a ﬁrst class representation of meta-level execution: at any point in the execution of a system it can be determined if we are operating on a meta-level or base level so that we can prevent inﬁnite recursion. We present how meta-level execution can be represented by a meta-context and how reﬂection becomes contextaware. Our solution makes it possible to freely apply behavioral reﬂection even on system classes: the meta-context brings st...

Marcus Denker, Mathieu Suen, Stéphane Ducas

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