What is the primary purpose of a parsing table in LR parsing?
Practice Questions
Q1
What is the primary purpose of a parsing table in LR parsing?
To store the grammar rules.
To determine the next action based on the current state and input symbol.
To keep track of the parse tree.
To optimize the parsing process.
Questions & Step-by-Step Solutions
What is the primary purpose of a parsing table in LR parsing?
Step 1: Understand that LR parsing is a method used in compilers to analyze the structure of input strings based on a grammar.
Step 2: Know that a parsing table is a tool used in LR parsing to guide the parsing process.
Step 3: Realize that the parsing table contains information about what action to take based on the current state of the parser and the next input symbol.
Step 4: Learn that the actions can be to shift (move to the next state), reduce (apply a grammar rule), accept (successfully finish parsing), or error (indicate a problem).
Step 5: Conclude that the primary purpose of the parsing table is to help the parser decide what to do next as it processes the input.
