S/SL programming language: Difference between revisions

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The '''Syntax/Semantic Language''' ('''S/SL''') is an executable [[high-level programming language|high level]] [[specification language]] for [[recursive descent parser]]s, semantic analyzers and code generators developed by [[James Cordy]], [[Ric Holt]] and [[David Wortman]] at the [[University of Toronto]] in 1980.<ref>J. R. Cordy, R. C. Holt and D. B. Wortman, "S/SL: Syntax/Semantic Language - Introduction and Specification", Technical Report CSRG-118, Computer Systems Research Group, University of Toronto, Sept. 1980</ref>

S/SL is a small [[programming language]] that supports cheap [[recursion]] and defines input, output, and error token names (&amp; values), semantic mechanisms (class interfaces whose methods are really escapes to routines in a host programming language but allow good abstraction in the [[pseudocode]]) and a pseudocode program that defines the [[syntax]] of the input language by the token stream the program accepts. Alternation, control flow and one-symbol look-ahead constructs are part of the language.