Pearson eText for Concepts of Programming Languages -- Instant Access (Pearson+)
12th Edition
ISBN: 9780135102268
Author: Robert Sebesta
Publisher: PEARSON+
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Expert Solution & Answer
Chapter 6, Problem 1RQ
Explanation of Solution
Descriptor:
- The descriptor is nothing but collection of the attributes of a variable.
- It is an area of memory which stores the attributes of a variable in an implementation.
- If the attributes are all static, then the descriptors are required only at compile time. These descriptors are built by the compiler, usually as a part of the symbol table, and are used during compilation.
- For dynamic attributes, all of the descriptor must be maintained during execution. Here, the descriptor is used by the run-time system.
- Generally, it is used for type checking and building the code for the allocation and deallocation operations.
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Chapter 6 Solutions
Pearson eText for Concepts of Programming Languages -- Instant Access (Pearson+)
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