Added Parser

- can parse a basic token list to an AST

Compiler/Pattern.cs

@@ -1,27 +0,0 @@
-using System;
-using System.Text.RegularExpressions;
-
-namespace Compiler
-{
-    public class Pattern
-    {
-        private String pattern;
-        private TokenType tokenType;
-
-        public Pattern(String pattern, TokenType tokenType)
-        {
-            this.pattern = pattern;
-            this.tokenType = tokenType;
-        }
-
-        public Regex ToRegex()
-        {
-            return new Regex(this.pattern);
-        }
-
-        public TokenType GetTokenType()
-        {
-            return this.tokenType;
-        }
-    }
-}