Compiler Design and Construction20766 marksType Checking and Conversion
Write Syntax Directed Definition to carry out type checking for the following expression.E→id∣E1 op E2∣E1 relop E2∣E1[E2]∣E1↑E \rightarrow id | E1 \text{ op } E2 | E1 \text{ relop } E2 | E1[E2] | E1↑E→id∣E1 op E2∣E1 relop E2∣E1[E2]∣E1↑
Write Syntax Directed Definition to carry out type checking for the following expression.E→id∣E1 op E2∣E1 relop E2∣E1[E2]∣E1↑E \rightarrow id | E1 \text{ op } E2 | E1 \text{ relop } E2 | E1[E2] | E1↑E→id∣E1 op E2∣E1 relop E2∣E1[E2]∣E1↑[6]
Type checking is a key part of semantic analysis. A Syntax-Directed Definition (SDD) associates attributes with grammar symbols and semantic rules with productions. For type checking, each expression E carries a synthesized attribute E.type that is computed bottom-up. --- Symbol Meaning ---------...