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In Fig. $4.56$ is a grammar for certain statements, similar to that discussed in Question $4.4.12$. Again, $e$ and $s$ are terminals standing for conditional expressions and "other statements," respectively.

  1. Build an LR parsing table for this grammar, resolving conflicts in the usual way for the dangling-else problem.
  2. Implement error correction by filling in the blank entries in the parsing table with extra reduce-actions or suitable error-recovery routines.
  3. Show the behavior of your parser on the following inputs:

 

  1. if e then s ; if e then s end
  2. while e do begin s ; if e then s ; end

 

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