2.5 Summary

In this chapter, we have acquired a basic understanding of compiler architecture and delved into the various stages of the compilation process, with a focus on the Clang driver. We have explored the internals of the Clang frontend, studying the Preprocessor that transforms a program into a set of tokens, and the Parser, which interacts with a component called ’Sema’. Together, these elements perform syntax and semantic analysis.

The upcoming chapter will center on the Clang Abstract Syntax Tree (AST)—the primary data structure employed in various Clang tools. We will discuss its construction and the methods for traversing it.