Top-Down Parsing/Exercise 6: Difference between revisions
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Consider the following grammar, where '''<tt>F</tt>''' is the initial symbol and '''<tt>{a,b,c,d,e}</tt>''' is the set of terminal symbols: | Consider the following grammar, where '''<tt>F</tt>''' is the initial symbol and '''<tt>{a,b,c,d,e}</tt>''' is the set of terminal symbols: | ||
O -> a | |||
G -> F c | O c d | ε | |||
F -> G b | O c F e | F -> G b | O c F e | ||
# Examine the grammar and rewrite it so that an LL(1) predictive parser can be built for the corresponding language. | # Examine the grammar and rewrite it so that an LL(1) predictive parser can be built for the corresponding language. | ||
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[[Image:Top-Down Parsing-exercise-06.jpg|800px|Temporary handwritten solution]] | [[Image:Top-Down Parsing-exercise-06.jpg|800px|Temporary handwritten solution]] | ||
[[category: | [[category:Compiladores]] | ||
[[category: | [[category:Ensino]] | ||
Latest revision as of 13:59, 29 April 2024
Problem
Consider the following grammar, where F is the initial symbol and {a,b,c,d,e} is the set of terminal symbols:
O -> a G -> F c | O c d | ε F -> G b | O c F e
- Examine the grammar and rewrite it so that an LL(1) predictive parser can be built for the corresponding language.
- Compute the FIRST and FOLLOW sets for all non-terminal symbols in the new grammar and build the parse table.
- Show the analysis table (stack, input, and actions) for the parsing process of the acbe input sequence.
Solution
