Consider the following attribute grammar (||=concatenate) . Show the derivation process for the input "int a, b, c;". and what would be the value of the expression of the annotated parse tree (value of the root)? Briefly describe the annotation process. S -> E S.st = E.st S -> S1 E S.st = S1 .st || E.st E -> T L ; L.type = T.type E.st = L.st T -> int T.type = int T -> string T.type = string L -> id L.st = (id.name, L.type) L -> L1 , id L1.type = L.type L.st = L1 .st || (id.name, L.type)
Consider the following attribute grammar (||=concatenate) . Show the derivation process for the input "int a, b, c;". and what would be the value of the expression of the annotated parse tree (value of the root)? Briefly describe the annotation process. S -> E S.st = E.st S -> S1 E S.st = S1 .st || E.st E -> T L ; L.type = T.type E.st = L.st T -> int T.type = int T -> string T.type = string L -> id L.st = (id.name, L.type) L -> L1 , id L1.type = L.type L.st = L1 .st || (id.name, L.type)
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Consider the following attribute grammar (||=concatenate) .
Show the derivation process for the input "int a, b, c;". and what would be the value of the expression of the annotated parse tree (value of the root)? Briefly describe the annotation process.
S -> E S.st = E.st
S -> S1 E S.st = S1 .st || E.st
E -> T L ; L.type = T.type
E.st = L.st
T -> int T.type = int
T -> string T.type = string
L -> id L.st = (id.name, L.type)
L -> L1 , id L1.type = L.type
L.st = L1 .st || (id.name, L.type)
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