The GNU C Preprocessor Internals

Contents:

• Copyright
• Cpplib—the GNU C Preprocessor
• Conventions
• The Lexer
  • Overview
  • Lexing a token
  • Lexing a line
• Hash Nodes
• Macro Expansion Algorithm
  • Internal representation of macros
  • Macro expansion overview
  • Scanning the replacement list for macros to expand
  • Looking for a function-like macro’s opening parenthesis
  • Marking tokens ineligible for future expansion
• Token Spacing
• Line numbering
  • Just which line number anyway?
  • Representation of line numbers
• The Multiple-Include Optimization
• File Handling
• Indexes and tables
  • TODO