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No abstract

The coroutine mechanism is explained as a simplified implementation of a special case in parallel processing.

LL(1) grammars have the conceptual and practical advantage that they allow the compiler writer to view the grammar as a program; this allows a more natural positioning of semantic actions and a simple attribute mechanism. Resulting parsers can be constructed that achieve fully automatic error‐recovery, which allows the compiler writer to ignore totally the issue of syntax errors. Measurement shows that such parsers can be reasonably efficient.

No abstract

The problems concerning SIZETY definitions in an Unabridged Machine-Independent Standard Prelude for ALGOL 68 are examined and tentative solutions are given.

No abstract

An attempt is made to assess some static and dynamic properties of ALGOL 68 programs, which are useful for optimization decisions. The results indicate that slicing and assignation are the most important candidates for optimization, and that optimization efforts need to be directed to the simple cases only.