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comp.compilers

Compiler construction, theory, etc. (Mod

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Message 1,253 of 2,753

Russ Cox to All

Re: Computing Follow set

06 Mar 08 21:04:52

   From: rsc@swtch.com   
      
   > A -> aB | a   
   > B -> bA | b   
   >   
   >>From the production A -> aB, we have FOLLOW(B) contains FOLLOW(A).   
   >>From the production B -> bA, we have FOLLOW(A) contains FOLLOW(B).   
   >   
   > This ends up being an infinite loop when I code it. I would appreciate   
   > your suggestions on this.   
      
   Start with FOLLOW(A), FOLLOW(B) empty, and then   
   repeatedly recalculate them, until they stop growing.   
      
   Russ   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)

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