https://compilers.iecc.com/crenshaw/

Let's Build a Compiler, by Jack Crenshaw

This fifteen-part series, written from 1988 to 1995, is a
non-technical introduction to compiler construction. You can read the
parts on-line or download them in a ZIP file.

Read the tutorial on-line

  * Part 1: INTRODUCTION
  * Part 2: EXPRESSION PARSING
  * Part 3: MORE EXPRESSIONS
  * Part 4 INTERPRETERS
  * Part 5: CONTROL CONSTRUCTS
  * Part 6: BOOLEAN EXPRESSIONS
  * Part 7: LEXICAL SCANNING
  * Part 8: A LITTLE PHILOSOPHY
  * Part 9: A TOP VIEW
  * Part 10: INTRODUCING "TINY"
  * Part 11: LEXICAL SCAN REVISITED
  * Part 12: MISCELLANY
  * Part 13: PROCEDURES
  * Part 14: TYPES
  * Part 15: BACK TO THE FUTURE
  * Part 16: UNIT CONSTRUCTION

Download the tutorial

It's available in two formats, plain text, and with printer control
characters so it will print reasonably on an Epson printer.

  * ZIP file of plain text files (212K)
  * ZIP file of DOS text files (214K)
  * ZIP file of plain formatted files (193K)
  * PDF of plain formatted files (581K)

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