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Posted 22 Oct 2011

Implementing Programming Languages Using C# 4.0

, 12 Jul 2012 MIT
An introduction to creating programming language tools using C# 4.0.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace Diggins.Jigsaw
    public class SExpressionGrammar : SharedGrammar
        new public static Rule Integer = Node(SharedGrammar.Integer);
        new public static Rule Float = Node(SharedGrammar.Float);
        public static Rule Term = Node(Recursive(() => (Atom | SExpr)));
        public static Rule Terms = Node(ZeroOrMore(Term + WS));
        public static Rule FirstSymbolChar = Letter | CharSet(@"~@#$%^&*-_=+:<>,./\");
        public static Rule NextSymbolChar = FirstSymbolChar | Digit;
        public static Rule Symbol = Node(FirstSymbolChar + ZeroOrMore(NextSymbolChar));
        public static Rule String = Node(MatchChar('"') + AdvanceWhileNot(MatchChar('"')) + MatchChar('"'));
        public static Rule Atom = Node(Integer | Float | String | Symbol);
        public static Rule SExpr = Node(CharToken('(') + Terms + CharToken(')'));

        static SExpressionGrammar() { InitGrammar(typeof(SExpressionGrammar)); }

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About the Author

Christopher Diggins
Software Developer Autodesk
Canada Canada
This article was written by Christopher Diggins, a computer science nerd who currently works at Autodesk as an SDK specialist.

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