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broken shitty code

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This commit is contained in:
Clemens-Dautermann 2020-08-23 00:54:58 +02:00
parent e6b20b5aa9
commit 5ec5c64775
28 changed files with 322 additions and 72 deletions
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112
Compiler/Parser/Parser.cs
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@ -1,6 +1,5 @@
using System;
using System.Collections.Generic;
using System.Linq;
using Compiler.Lexer;
using Compiler.Parser.Exceptions;
using Compiler.Parser.Nodes;
@ -111,22 +110,118 @@ namespace Compiler.Parser
throw new MissingTokenException(TokenType.IntegerLiteralToken);
}
Node firstTerm = Parse(NodeType.TermNode);
n = firstTerm;
Token expressionToken = _tokenList[0];
switch (expressionToken.TokenType)
while (expressionToken.TokenType == TokenType.AdditionToken ||
expressionToken.TokenType == TokenType.NegationToken)
{
_tokenList.RemoveAt(0);
switch (expressionToken.TokenType)
{
case TokenType.AdditionToken:
n = new BinaryOperatorNode(OperatorType.Addition);
n.Children.Add(firstTerm);
n.Children.Add(Parse(NodeType.TermNode));
break;
case TokenType.NegationToken:
n = new BinaryOperatorNode(OperatorType.Subtraction);
n.Children.Add(firstTerm);
n.Children.Add(Parse(NodeType.TermNode));
break;
default:
throw new Exception("WeirdException");
}
if (_tokenList.Count > 0)
{
expressionToken = _tokenList[0];
}
else
{
throw new MissingTokenException(TokenType.IntegerLiteralToken);
}
}
break;
case NodeType.TermNode:
if (_tokenList.Count == 0)
{
throw new MissingTokenException(TokenType.IntegerLiteralToken);
}
Node firstFactor = Parse(NodeType.FactorNode);
n = firstFactor;
Token termToken = _tokenList[0];
while (termToken.TokenType == TokenType.MultiplicationToken ||
termToken.TokenType == TokenType.DivisionToken)
{
_tokenList.RemoveAt(0);
switch (termToken.TokenType)
{
case TokenType.MultiplicationToken:
n = new BinaryOperatorNode(OperatorType.Multiplication);
n.Children.Add(firstFactor);
n.Children.Add(Parse(NodeType.FactorNode));
break;
case TokenType.DivisionToken:
n = new BinaryOperatorNode(OperatorType.Division);
n.Children.Add(firstFactor);
n.Children.Add(Parse(NodeType.FactorNode));
break;
default:
throw new Exception("WeirdException");
}
if (_tokenList.Count > 0)
{
termToken = _tokenList[0];
}
else
{
throw new MissingTokenException(TokenType.IntegerLiteralToken);
}
}
break;
case NodeType.FactorNode:
if (_tokenList.Count == 0)
{
throw new MissingTokenException(TokenType.IntegerLiteralToken);
}
Token factorToken = _tokenList[0];
switch (factorToken.TokenType)
{
case TokenType.OpenParenthesisToken:
CheckFirstTokenAndRemove(TokenType.OpenParenthesisToken);
n = Parse(NodeType.ExpressionNode);
CheckFirstTokenAndRemove(TokenType.CloseParenthesisToken);
break;
case TokenType.NegationToken:
case TokenType.BitwiseComplementToken:
case TokenType.LogicalNegationToken:
n = Parse(NodeType.UnaryOperatorNode);
n.Children.Add(Parse(NodeType.FactorNode));
break;
case TokenType.IntegerLiteralToken:
n = Parse(NodeType.ConstantNode);
break;
case TokenType.BitwiseComplementToken:
case TokenType.NegationToken:
case TokenType.LogicalNegationToken:
n = Parse(NodeType.UnaryOperatorNode);
break;
default:
throw new UnexpectedTokenException(TokenType.IntegerLiteralToken,
expressionToken.TokenType);
factorToken.TokenType);
}
break;
case NodeType.UnaryOperatorNode:
@ -180,6 +275,7 @@ namespace Compiler.Parser
_tokenList.RemoveAt(0);
break;
}
default:
throw new Exception("Unknown Node Type " + nodeType);
}