Alex and Happy
Alex and Happy
Lexers and Parsers in Haskell
About the Book
This is a book-in-progress about building lexers and parsers in Haskell for beginning to intermediate Haskell programmers. Please send your feedback to firstname.lastname@example.org
- Cover image
- 1.1 Lexers and parsers
- 1.2 Alex and Happy
2. A Basic Lexer
- 2.1 Structure of an Alex file
3. Monadic Parsers and Lexers
- 3.1 The Lexer
- 3.2 The Abstract Syntax Tree Type
- 3.3 The Parser
- 3.4 The Driver
4. Significant Whitespace
- 4.1 Imports
- 4.2 Alex rules
- 4.3 Datatypes and utility functions
- 4.4 Lexer actions
- 4.5 Driver
5. Parsing comments and strings: Startcodes
- 5.1 Token definitions
- 5.2 The state
- 5.3 The Lexer Actions
- 5.4 String lexing actions
- 5.5 Comment lexing actions
- 5.6 The driver
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