Bottom-Up Parsing/Exercise 16: LALR(1)

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Problema

Consider the following grammar, where R is the initial symbol and { a, b, c } is the set of terminal symbols:

X -> a | c
R -> R X b | R a | a
  1. Compute the set of LALR(1) states for the grammar. Build the corresponding LALR(1) parse table.
  2. Compact the parse table, eliminating and propagating reductions.
  3. Show the parsing process for input zzxy (including the actions/gotos and the input and stack states). In case of conflict, assume YACC's behavior.

Solução

Note-se que a solução apresentada é para SLR(1) e LALR(1) (a vermelho).

Solução completa

RXb1.jpg RXb2.jpg