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Two Architectures for a Compiler

publish date: 2026/06/10 22:54:3.427697 UTC

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A compiler can be organized using two alternative architectural patterns. Which of the following correctly describes when each is preferable?

Pipe and Filter for all compilers; Repository never used for compilers

Pipe and Filter is used only for natural language processing; Repository is used only for machine code generation

Repository is always preferred because it is simpler to implement than Pipe and Filter

Pipe and Filter is effective in batch environments where programs are compiled without user interaction; Repository is better when the compiler is integrated with other tools like structured editors, debuggers, or prettyprinters, where changes must be reflected immediately across components

Correct Answer

Explanation

The Pipe and Filter compiler model is effective in batch environments where programs are compiled and executed without user interaction (e.g., translating XML documents). However, when a compiler is integrated with other language processing tools - a structured editor, interactive debugger, or prettyprinter - changes from one component need to be reflected immediately in others, making a repository-based organization (with the symbol table and syntax tree as the central repository) more appropriate.

Reference

Software Engineering, Ian Sommerville, 10th edition

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