gaufung

//Token.cs
public class Token
{
    public TokenType Type { get; set; }
    public string Literal { get; set; }
}

gaufung

[Test]
public void TestLexerNextToken()
{
    string input = @"1 + 2 * (12 - 6) / 3 + 2 ^ 3
+ ((4+3) *   4)
/ 4
";

    var tests = new[]
    {

gaufung

// Lexer.cs
public class Lexer
{
    //...
    public Token NextToken()
    {
        //...
        char character = this.input[this.position];
        switch (character)
        {

gaufung

public abstract class Expression
{
    public abstract string TokenLiteral();
}
//IntegerExpression.cs
public class IntegerExpression : Expression
{
    public Token Token { get; set; }
    public long Value { get; set; }
   //...

gaufung

//Pecedence.cs
public enum Precedence
{
    LOWEST = 0,
    SUM = 1,
    PRODUCT = 2,
    PREFIX = 3,
    POWER = 4,
    GROUP = 5,
}

gaufung

public class Parser
{
    //...
    public Expression Parse()
    {
        return this.ParseExpression(Precedence.LOWEST);
    }
    private Expression ParseExpression(Precedence precedence)
    {
        if(this.PrefixFns.ContainsKey(this._currentToken.Type))

gaufung

// ParserTest.cs
[TestFixture]
public class ParserTest
{
    //...
    [Test]
    public void TestParser()
    {
        var tests = new []
        {

gaufung

// Object.cs
public abstract class Object
{
    public abstract ObjectType Type();
    public abstract string Inspect();
}
// IntegerObject.cs
public class IntegerObject : Object
{
    public long Value { get; set; }

gaufung

// Evalutor.cs
public class Evaluator
{
    public static Object.Object Eval(Expression expression)
    {
        if(expression is AST.IntegerExpression)
        {
            return new Object.IntegerObject { Value = ((IntegerExpression)expression).Value };
        }
        if(expression is AST.PrefixExpression)

gaufung

static void Main(string[] args)
{
    var lexer = new Lexer.Lexer(input);
    var parser = new Parser.Parser(lexer);
    var expression = parser.Parse();
    var result = Evaluate.Evaluator.Eval(expression);
    Console.Out.Write(result.Inspect());
}