February 2022
Beginner to intermediate
572 pages
13h
English
Content preview from An Introduction to Formal Languages and Automata, 7th Edition
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17.6 LR(1) PARSING WITH λ-PRODUCTIONS
A λ-production has only one item, as the right-hand side is of length 0. Thus, the λ-production item has the marker (·) at the end of the righthand side and always results in a reduce operation. We can display the rule A → λ as the item A → λ· or as A → · without the λ. Any state in a dfa with this item is a final state.
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