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Yapps Page
The
Yapps
Parser Generator System
http://theory.stanford.edu/~amitp/Yapps/
Version 2
Amit J. Patel
http://www-cs-students.stanford.edu/~amitp/
1
Introduction
2
Examples
2
.
1
Introduction to Grammars
2
.
2
Lisp Expressions
Defining the Grammar
Running Yapps
2
.
3
Calculator
2
.
4
Calculator with Memory
3
Grammars
3
.
1
Left Factoring
3
.
2
Left Recursion
3
.
3
Ambiguous Grammars
4
Customization
4
.
1
Customizing Parsers
4
.
2
Customizing Scanners
5
Parser Mechanics
5
.
1
Parser Objects
5
.
2
Context Sensitive Scanner
5
.
3
Internal Variables
5
.
4
Pre- and Post-Parser Code
5
.
5
Representation of Grammars
A. Grammar for Parsers
B. Upgrading
C. Troubleshooting
D. History
E. Future Extensions
F. References
Amit J Patel, amitp@cs.stanford.edu