CODEWITHSUNDEEP
compiler-constructionbisonyaccbisonc++
Jeevansai Jinne
Jeevansai Jinne

Reputation: 177

semantic statements and yacc

I am searching for c grammar and found this link https://www.lysator.liu.se/c/ANSI-C-grammar-y.html#cast-expression the issue is there is grammar for c and lex code but i don't see any semantics like addition ,multiplication implemented i know that yacc is used for only syntax check but we can also write semantics in it where are the semantics implemented are they implemented in other tool.

I am trying to implement a small compiler where do i write semantics ,is it good to write them in yacc using functions.

Upvotes: 0

Views: 568

Answers (1)

rici
rici

Reputation: 241721

That example grammar (which is for a very old version of C) does not contain any particular semantics. You could certainly add them; the semantic rules would depend on what sort of tool you were building.

Bison/yacc is certainly a possible tool to build a compiler with. Many people have done so. Whether you refactor the semantic code into reusable functions​ or just put code directly into each action is a design choice​ which is up to you; I think most of us would recommend some use of functions to avoid code repetition.

Upvotes: 2

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