Practice - Viable Prefixes and Valid Items - Guiding the Parser's Decisions
Practice Questions
Test your understanding with targeted questions
What is a viable prefix?
💡 Hint: Think about what sequences can exist within a valid structure.
Define an LR(0) item.
💡 Hint: Consider what the dot signifies in the item.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What defines a viable prefix?
💡 Hint: It relates to how sentences are built in the parser.
True or False: A LR(0) item shows complete recognition of a production.
💡 Hint: Remember the role of the dot in the item.
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Challenge Problems
Push your limits with advanced challenges
Create a set of viable prefixes for the grammar S -> A B, A -> a, B -> b, and reflect on how they look as you parse.
💡 Hint: Consider what each possible prefix could yield in terms of valid parse structure.
Given a set of LR(0) items derived from a grammar, demonstrate how you would apply the CLOSURE operation and identify additional items added.
💡 Hint: Think about which non-terminals can lead to new productions being recognized.
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Reference links
Supplementary resources to enhance your learning experience.