SYNTAX ANALYSIS
ROLE OF THE PARSER
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
Delete symbols from the stack
|
|
|
Insert symbols onto the stack
|
|
|
Inserting or deleting symbols from the input
|
|
|
All of these
|
Detailed explanation-1: -Here you can find the meaning of Which of the following actions an operator-precedence parser may take to recover from an error? a)Insert symbols onto the stackb)Delete symbols from the stackc)Insert or delete symbols from the inputd)All of the aboveCorrect answer is option ‘D’.
Detailed explanation-2: -3. Which of the following is true for operator precedence parsing? Explanation: There are two important properties for these operator precedence parsers is that it does not appear on the right side of any production and no production has two adjacent non-terminals.
Detailed explanation-3: -There are two types of operator precedence parsing errors, namely character pair errors and reducibility errors.
Detailed explanation-4: -Precedence relations between any two operators or symbols in the precedence table can be converted to two precedence functions f & g that map terminals symbols to integers. Here a, b represents terminal symbols. f (a) and g (b) represents the precedence functions that have an integer value.