What is Alpag

Alpag is a lexer and parser generator targeted primarily at C#/.NET environment.

Alpag can generate:

• lexers based on regular expression grammars using DFA method
• parsers for Context Free Grammars using of LR(1) algorithm.

Alpag is intended as a modern replacement for lex/yacc combo of lexer and parser generators popular in C language environment. Providing similar functionality it generates code that can be easily integrated in modern applications.

Key features of Alpag are:

• ease of integration and good interoperability with surrounding code
• familiar interface with lex-like and yacc-like syntax of input files
• generation of native C# code, preferably resembling human-written code
• no dependency on external libraries
• full support of Unicode including characters outside of BMP
• "you pay for what you use" approach to generated code
• rich debugging capabilities

Alpag comes with a license enabling both non-commercial and commercial use of generated code (refer to enclosed License for details).

Please take a while to read How to read this manual chapter.