COMPILER DESIGN

SYNTAX ANALYSIS

ROLE OF THE PARSER

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which derivation is generated by the bottom-up parser?
A
Right-most derivation in reverse
B
Left-most derivation in reverse
C
Right-most derivation
D
Left-most derivation
Explanation: 

Detailed explanation-1: -Bottom-up parser:-A Bottom-up parser generates the Rightmost derivation in reverse. This corresponds to starting at the leaves of the parse tree also known as shift-reduce parsing. The strings that are reduced during the reverse of a rightmost derivation are called the handles.

Detailed explanation-2: -Explanation: Bottom-up parser generates the rightmost derivation in reverse.

Detailed explanation-3: -Explanation: Bottom-up parser generates the right-most derivation in reverse. It constructs the parse tree from the input string to the root and tries to construct the right-most derivation of the specified string backward.

Detailed explanation-4: -Bottom-up parsing: It uses the rightmost derivation in Reverse. It is also known as Shift reduce parsing.

Detailed explanation-5: -Rightmost Derivation: This is the process of deriving the input string by expanding the rightmost non-terminal. In the rightmost derivation, we derive the string by changing the rightmost non-terminal to get the input string.

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