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Caltech Intermediate Form

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Caltech Intermediate Form is a programming language created in 1980.

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Wikipedia

Caltech Intermediate Form (CIF) is a file format for describing integrated circuits. CIF provides a limited set of graphics primitives that are useful for describing the two-dimensional shapes on the different layers of a chip. The format allows hierarchical description, which makes the representation concise. Read more on Wikipedia...


Example from Wikipedia:
cifFile聽::= (blank* command? semi)* endCommand blank* command聽::= primCommand | defDeleteCommand | defStartCommand semi (blank* primCommand? semi)* defFinishCommand primCommand聽::= polygonCommand | boxCommand | roundFlashCommand | wireCommand | layerCommand | callCommand | userExtensionCommand | commentCommand polygonCommand聽::= "P" path boxCommand聽::= "B" integer sep integer sep point (sep point)? roundFlashCommand聽::= "R" integer sep point wireCommand聽::= "W" integer sep path layerCommand聽::= "L" blank* shortname defStartCommand聽::= "D" blank* "S" integer (sep integer sep integer)? defFinishCommand聽::= "D" blank* "F" defDeleteCommand聽::= "D" blank* "D" integer callCommand聽::= "C" integer transformation userExtensionCommand聽::= digit userText commentCommand聽::= "(" commentText ")" endCommand聽::= "E" transformation聽::= (blank* ("T" point |"M" blank* "X" |"M" blank* "Y" |"R" point)*)* path聽::= point (sep point)* point聽::= sInteger sep sInteger sInteger聽::= sep* "-"? integerD integer聽::= sep* integerD integerD聽::= digit+ shortname聽::= c c? c? c? c聽::= digit | upperChar userText聽::= userChar* commentText聽::= commentChar* | commentText "(" commentText ")" commentText semi聽::= blank* ";" blank* sep聽::= upperChar | blank digit聽::= "0" | "1" | ... | "9" upperChar聽::= "A" | "B" | ... | "Z" blank聽::= any ASCII character except digit, upperChar, "-", "(", ")", or ";" userChar聽::= any ASCII character except ";" commentChar聽::= any ASCII character except "(" or ")"
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