Merge branch 'master' into feat/unify-server-mergeMaster

modified:   ../src/main/java/de/dhbwstuttgart/core/JavaTXCompiler.java
	modified:   ../src/test/java/TestComplete.java

.gitea/workflows/build_and_test.yml

@@ -15,7 +15,7 @@ jobs:
         uses: actions/setup-java@v4
         with:
           distribution: 'temurin'
-          java-version: '21'
+          java-version: '24'
           cache: 'maven'
       - name: Compile project
         run: |

gen/Java17Lexer.java

@@ -0,0 +1,873 @@
+// Generated from C:/Users/ruben/IdeaProjects/JavaCompilerCore/src/main/antlr4/de/dhbwstuttgart/parser/antlr/Java17Lexer.g4 by ANTLR 4.13.1
+import org.antlr.v4.runtime.Lexer;
+import org.antlr.v4.runtime.CharStream;
+import org.antlr.v4.runtime.Token;
+import org.antlr.v4.runtime.TokenStream;
+import org.antlr.v4.runtime.*;
+import org.antlr.v4.runtime.atn.*;
+import org.antlr.v4.runtime.dfa.DFA;
+import org.antlr.v4.runtime.misc.*;
+
+@SuppressWarnings({"all", "warnings", "unchecked", "unused", "cast", "CheckReturnValue", "this-escape"})
+public class Java17Lexer extends Lexer {
+	static { RuntimeMetaData.checkVersion("4.13.1", RuntimeMetaData.VERSION); }
+
+	protected static final DFA[] _decisionToDFA;
+	protected static final PredictionContextCache _sharedContextCache =
+		new PredictionContextCache();
+	public static final int
+		ABSTRACT=1, ASSERT=2, BOOLEAN=3, BREAK=4, BYTE=5, CASE=6, CATCH=7, CHAR=8, 
+		CLASS=9, CONST=10, CONTINUE=11, DEFAULT=12, DO=13, DOUBLE=14, ELSE=15, 
+		ENUM=16, EXTENDS=17, FINAL=18, FINALLY=19, FLOAT=20, FOR=21, IF=22, GOTO=23, 
+		IMPLEMENTS=24, IMPORT=25, INSTANCEOF=26, INT=27, INTERFACE=28, LONG=29, 
+		NATIVE=30, NEW=31, PACKAGE=32, PRIVATE=33, PROTECTED=34, PUBLIC=35, RETURN=36, 
+		SHORT=37, STATIC=38, STRICTFP=39, SUPER=40, SWITCH=41, SYNCHRONIZED=42, 
+		THIS=43, THROW=44, THROWS=45, TRANSIENT=46, TRY=47, VOID=48, VOLATILE=49, 
+		WHILE=50, MODULE=51, OPEN=52, REQUIRES=53, EXPORTS=54, OPENS=55, TO=56, 
+		USES=57, PROVIDES=58, WITH=59, TRANSITIVE=60, VAR=61, YIELD=62, RECORD=63, 
+		SEALED=64, PERMITS=65, NON_SEALED=66, DECIMAL_LITERAL=67, HEX_LITERAL=68, 
+		OCT_LITERAL=69, BINARY_LITERAL=70, FLOAT_LITERAL=71, HEX_FLOAT_LITERAL=72, 
+		BOOL_LITERAL=73, CHAR_LITERAL=74, STRING_LITERAL=75, TEXT_BLOCK=76, NULL_LITERAL=77, 
+		LPAREN=78, RPAREN=79, LBRACE=80, RBRACE=81, LBRACK=82, RBRACK=83, SEMI=84, 
+		COMMA=85, DOT=86, ASSIGN=87, GT=88, LT=89, BANG=90, TILDE=91, QUESTION=92, 
+		COLON=93, EQUAL=94, LE=95, GE=96, NOTEQUAL=97, AND=98, OR=99, INC=100, 
+		DEC=101, ADD=102, SUB=103, MUL=104, DIV=105, BITAND=106, BITOR=107, CARET=108, 
+		MOD=109, ADD_ASSIGN=110, SUB_ASSIGN=111, MUL_ASSIGN=112, DIV_ASSIGN=113, 
+		AND_ASSIGN=114, OR_ASSIGN=115, XOR_ASSIGN=116, MOD_ASSIGN=117, LSHIFT_ASSIGN=118, 
+		RSHIFT_ASSIGN=119, URSHIFT_ASSIGN=120, ARROW=121, COLONCOLON=122, AT=123, 
+		ELLIPSIS=124, WS=125, COMMENT=126, LINE_COMMENT=127, IDENTIFIER=128;
+	public static String[] channelNames = {
+		"DEFAULT_TOKEN_CHANNEL", "HIDDEN"
+	};
+
+	public static String[] modeNames = {
+		"DEFAULT_MODE"
+	};
+
+	private static String[] makeRuleNames() {
+		return new String[] {
+			"ABSTRACT", "ASSERT", "BOOLEAN", "BREAK", "BYTE", "CASE", "CATCH", "CHAR", 
+			"CLASS", "CONST", "CONTINUE", "DEFAULT", "DO", "DOUBLE", "ELSE", "ENUM", 
+			"EXTENDS", "FINAL", "FINALLY", "FLOAT", "FOR", "IF", "GOTO", "IMPLEMENTS", 
+			"IMPORT", "INSTANCEOF", "INT", "INTERFACE", "LONG", "NATIVE", "NEW", 
+			"PACKAGE", "PRIVATE", "PROTECTED", "PUBLIC", "RETURN", "SHORT", "STATIC", 
+			"STRICTFP", "SUPER", "SWITCH", "SYNCHRONIZED", "THIS", "THROW", "THROWS", 
+			"TRANSIENT", "TRY", "VOID", "VOLATILE", "WHILE", "MODULE", "OPEN", "REQUIRES", 
+			"EXPORTS", "OPENS", "TO", "USES", "PROVIDES", "WITH", "TRANSITIVE", "VAR", 
+			"YIELD", "RECORD", "SEALED", "PERMITS", "NON_SEALED", "DECIMAL_LITERAL", 
+			"HEX_LITERAL", "OCT_LITERAL", "BINARY_LITERAL", "FLOAT_LITERAL", "HEX_FLOAT_LITERAL", 
+			"BOOL_LITERAL", "CHAR_LITERAL", "STRING_LITERAL", "TEXT_BLOCK", "NULL_LITERAL", 
+			"LPAREN", "RPAREN", "LBRACE", "RBRACE", "LBRACK", "RBRACK", "SEMI", "COMMA", 
+			"DOT", "ASSIGN", "GT", "LT", "BANG", "TILDE", "QUESTION", "COLON", "EQUAL", 
+			"LE", "GE", "NOTEQUAL", "AND", "OR", "INC", "DEC", "ADD", "SUB", "MUL", 
+			"DIV", "BITAND", "BITOR", "CARET", "MOD", "ADD_ASSIGN", "SUB_ASSIGN", 
+			"MUL_ASSIGN", "DIV_ASSIGN", "AND_ASSIGN", "OR_ASSIGN", "XOR_ASSIGN", 
+			"MOD_ASSIGN", "LSHIFT_ASSIGN", "RSHIFT_ASSIGN", "URSHIFT_ASSIGN", "ARROW", 
+			"COLONCOLON", "AT", "ELLIPSIS", "WS", "COMMENT", "LINE_COMMENT", "IDENTIFIER", 
+			"ExponentPart", "EscapeSequence", "HexDigits", "HexDigit", "Digits", 
+			"LetterOrDigit", "Letter"
+		};
+	}
+	public static final String[] ruleNames = makeRuleNames();
+
+	private static String[] makeLiteralNames() {
+		return new String[] {
+			null, "'abstract'", "'assert'", "'boolean'", "'break'", "'byte'", "'case'", 
+			"'catch'", "'char'", "'class'", "'const'", "'continue'", "'default'", 
+			"'do'", "'double'", "'else'", "'enum'", "'extends'", "'final'", "'finally'", 
+			"'float'", "'for'", "'if'", "'goto'", "'implements'", "'import'", "'instanceof'", 
+			"'int'", "'interface'", "'long'", "'native'", "'new'", "'package'", "'private'", 
+			"'protected'", "'public'", "'return'", "'short'", "'static'", "'strictfp'", 
+			"'super'", "'switch'", "'synchronized'", "'this'", "'throw'", "'throws'", 
+			"'transient'", "'try'", "'void'", "'volatile'", "'while'", "'module'", 
+			"'open'", "'requires'", "'exports'", "'opens'", "'to'", "'uses'", "'provides'", 
+			"'with'", "'transitive'", "'var'", "'yield'", "'record'", "'sealed'", 
+			"'permits'", "'non-sealed'", null, null, null, null, null, null, null, 
+			null, null, null, "'null'", "'('", "')'", "'{'", "'}'", "'['", "']'", 
+			"';'", "','", "'.'", "'='", "'>'", "'<'", "'!'", "'~'", "'?'", "':'", 
+			"'=='", "'<='", "'>='", "'!='", "'&&'", "'||'", "'++'", "'--'", "'+'", 
+			"'-'", "'*'", "'/'", "'&'", "'|'", "'^'", "'%'", "'+='", "'-='", "'*='", 
+			"'/='", "'&='", "'|='", "'^='", "'%='", "'<<='", "'>>='", "'>>>='", "'->'", 
+			"'::'", "'@'", "'...'"
+		};
+	}
+	private static final String[] _LITERAL_NAMES = makeLiteralNames();
+	private static String[] makeSymbolicNames() {
+		return new String[] {
+			null, "ABSTRACT", "ASSERT", "BOOLEAN", "BREAK", "BYTE", "CASE", "CATCH", 
+			"CHAR", "CLASS", "CONST", "CONTINUE", "DEFAULT", "DO", "DOUBLE", "ELSE", 
+			"ENUM", "EXTENDS", "FINAL", "FINALLY", "FLOAT", "FOR", "IF", "GOTO", 
+			"IMPLEMENTS", "IMPORT", "INSTANCEOF", "INT", "INTERFACE", "LONG", "NATIVE", 
+			"NEW", "PACKAGE", "PRIVATE", "PROTECTED", "PUBLIC", "RETURN", "SHORT", 
+			"STATIC", "STRICTFP", "SUPER", "SWITCH", "SYNCHRONIZED", "THIS", "THROW", 
+			"THROWS", "TRANSIENT", "TRY", "VOID", "VOLATILE", "WHILE", "MODULE", 
+			"OPEN", "REQUIRES", "EXPORTS", "OPENS", "TO", "USES", "PROVIDES", "WITH", 
+			"TRANSITIVE", "VAR", "YIELD", "RECORD", "SEALED", "PERMITS", "NON_SEALED", 
+			"DECIMAL_LITERAL", "HEX_LITERAL", "OCT_LITERAL", "BINARY_LITERAL", "FLOAT_LITERAL", 
+			"HEX_FLOAT_LITERAL", "BOOL_LITERAL", "CHAR_LITERAL", "STRING_LITERAL", 
+			"TEXT_BLOCK", "NULL_LITERAL", "LPAREN", "RPAREN", "LBRACE", "RBRACE", 
+			"LBRACK", "RBRACK", "SEMI", "COMMA", "DOT", "ASSIGN", "GT", "LT", "BANG", 
+			"TILDE", "QUESTION", "COLON", "EQUAL", "LE", "GE", "NOTEQUAL", "AND", 
+			"OR", "INC", "DEC", "ADD", "SUB", "MUL", "DIV", "BITAND", "BITOR", "CARET", 
+			"MOD", "ADD_ASSIGN", "SUB_ASSIGN", "MUL_ASSIGN", "DIV_ASSIGN", "AND_ASSIGN", 
+			"OR_ASSIGN", "XOR_ASSIGN", "MOD_ASSIGN", "LSHIFT_ASSIGN", "RSHIFT_ASSIGN", 
+			"URSHIFT_ASSIGN", "ARROW", "COLONCOLON", "AT", "ELLIPSIS", "WS", "COMMENT", 
+			"LINE_COMMENT", "IDENTIFIER"
+		};
+	}
+	private static final String[] _SYMBOLIC_NAMES = makeSymbolicNames();
+	public static final Vocabulary VOCABULARY = new VocabularyImpl(_LITERAL_NAMES, _SYMBOLIC_NAMES);
+
+	/**
+	 * @deprecated Use {@link #VOCABULARY} instead.
+	 */
+	@Deprecated
+	public static final String[] tokenNames;
+	static {
+		tokenNames = new String[_SYMBOLIC_NAMES.length];
+		for (int i = 0; i < tokenNames.length; i++) {
+			tokenNames[i] = VOCABULARY.getLiteralName(i);
+			if (tokenNames[i] == null) {
+				tokenNames[i] = VOCABULARY.getSymbolicName(i);
+			}
+
+			if (tokenNames[i] == null) {
+				tokenNames[i] = "<INVALID>";
+			}
+		}
+	}
+
+	@Override
+	@Deprecated
+	public String[] getTokenNames() {
+		return tokenNames;
+	}
+
+	@Override
+
+	public Vocabulary getVocabulary() {
+		return VOCABULARY;
+	}
+
+
+	public Java17Lexer(CharStream input) {
+		super(input);
+		_interp = new LexerATNSimulator(this,_ATN,_decisionToDFA,_sharedContextCache);
+	}
+
+	@Override
+	public String getGrammarFileName() { return "Java17Lexer.g4"; }
+
+	@Override
+	public String[] getRuleNames() { return ruleNames; }
+
+	@Override
+	public String getSerializedATN() { return _serializedATN; }
+
+	@Override
+	public String[] getChannelNames() { return channelNames; }
+
+	@Override
+	public String[] getModeNames() { return modeNames; }
+
+	@Override
+	public ATN getATN() { return _ATN; }
+
+	public static final String _serializedATN =
+		"\u0004\u0000\u0080\u0458\u0006\uffff\uffff\u0002\u0000\u0007\u0000\u0002"+
+		"\u0001\u0007\u0001\u0002\u0002\u0007\u0002\u0002\u0003\u0007\u0003\u0002"+
+		"\u0004\u0007\u0004\u0002\u0005\u0007\u0005\u0002\u0006\u0007\u0006\u0002"+
+		"\u0007\u0007\u0007\u0002\b\u0007\b\u0002\t\u0007\t\u0002\n\u0007\n\u0002"+
+		"\u000b\u0007\u000b\u0002\f\u0007\f\u0002\r\u0007\r\u0002\u000e\u0007\u000e"+
+		"\u0002\u000f\u0007\u000f\u0002\u0010\u0007\u0010\u0002\u0011\u0007\u0011"+
+		"\u0002\u0012\u0007\u0012\u0002\u0013\u0007\u0013\u0002\u0014\u0007\u0014"+
+		"\u0002\u0015\u0007\u0015\u0002\u0016\u0007\u0016\u0002\u0017\u0007\u0017"+
+		"\u0002\u0018\u0007\u0018\u0002\u0019\u0007\u0019\u0002\u001a\u0007\u001a"+
+		"\u0002\u001b\u0007\u001b\u0002\u001c\u0007\u001c\u0002\u001d\u0007\u001d"+
+		"\u0002\u001e\u0007\u001e\u0002\u001f\u0007\u001f\u0002 \u0007 \u0002!"+
+		"\u0007!\u0002\"\u0007\"\u0002#\u0007#\u0002$\u0007$\u0002%\u0007%\u0002"+
+		"&\u0007&\u0002\'\u0007\'\u0002(\u0007(\u0002)\u0007)\u0002*\u0007*\u0002"+
+		"+\u0007+\u0002,\u0007,\u0002-\u0007-\u0002.\u0007.\u0002/\u0007/\u0002"+
+		"0\u00070\u00021\u00071\u00022\u00072\u00023\u00073\u00024\u00074\u0002"+
+		"5\u00075\u00026\u00076\u00027\u00077\u00028\u00078\u00029\u00079\u0002"+
+		":\u0007:\u0002;\u0007;\u0002<\u0007<\u0002=\u0007=\u0002>\u0007>\u0002"+
+		"?\u0007?\u0002@\u0007@\u0002A\u0007A\u0002B\u0007B\u0002C\u0007C\u0002"+
+		"D\u0007D\u0002E\u0007E\u0002F\u0007F\u0002G\u0007G\u0002H\u0007H\u0002"+
+		"I\u0007I\u0002J\u0007J\u0002K\u0007K\u0002L\u0007L\u0002M\u0007M\u0002"+
+		"N\u0007N\u0002O\u0007O\u0002P\u0007P\u0002Q\u0007Q\u0002R\u0007R\u0002"+
+		"S\u0007S\u0002T\u0007T\u0002U\u0007U\u0002V\u0007V\u0002W\u0007W\u0002"+
+		"X\u0007X\u0002Y\u0007Y\u0002Z\u0007Z\u0002[\u0007[\u0002\\\u0007\\\u0002"+
+		"]\u0007]\u0002^\u0007^\u0002_\u0007_\u0002`\u0007`\u0002a\u0007a\u0002"+
+		"b\u0007b\u0002c\u0007c\u0002d\u0007d\u0002e\u0007e\u0002f\u0007f\u0002"+
+		"g\u0007g\u0002h\u0007h\u0002i\u0007i\u0002j\u0007j\u0002k\u0007k\u0002"+
+		"l\u0007l\u0002m\u0007m\u0002n\u0007n\u0002o\u0007o\u0002p\u0007p\u0002"+
+		"q\u0007q\u0002r\u0007r\u0002s\u0007s\u0002t\u0007t\u0002u\u0007u\u0002"+
+		"v\u0007v\u0002w\u0007w\u0002x\u0007x\u0002y\u0007y\u0002z\u0007z\u0002"+
+		"{\u0007{\u0002|\u0007|\u0002}\u0007}\u0002~\u0007~\u0002\u007f\u0007\u007f"+
+		"\u0002\u0080\u0007\u0080\u0002\u0081\u0007\u0081\u0002\u0082\u0007\u0082"+
+		"\u0002\u0083\u0007\u0083\u0002\u0084\u0007\u0084\u0002\u0085\u0007\u0085"+
+		"\u0002\u0086\u0007\u0086\u0001\u0000\u0001\u0000\u0001\u0000\u0001\u0000"+
+		"\u0001\u0000\u0001\u0000\u0001\u0000\u0001\u0000\u0001\u0000\u0001\u0001"+
+		"\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001\u0001"+
+		"\u0001\u0002\u0001\u0002\u0001\u0002\u0001\u0002\u0001\u0002\u0001\u0002"+
+		"\u0001\u0002\u0001\u0002\u0001\u0003\u0001\u0003\u0001\u0003\u0001\u0003"+
+		"\u0001\u0003\u0001\u0003\u0001\u0004\u0001\u0004\u0001\u0004\u0001\u0004"+
+		"\u0001\u0004\u0001\u0005\u0001\u0005\u0001\u0005\u0001\u0005\u0001\u0005"+
+		"\u0001\u0006\u0001\u0006\u0001\u0006\u0001\u0006\u0001\u0006\u0001\u0006"+
+		"\u0001\u0007\u0001\u0007\u0001\u0007\u0001\u0007\u0001\u0007\u0001\b\u0001"+
+		"\b\u0001\b\u0001\b\u0001\b\u0001\b\u0001\t\u0001\t\u0001\t\u0001\t\u0001"+
+		"\t\u0001\t\u0001\n\u0001\n\u0001\n\u0001\n\u0001\n\u0001\n\u0001\n\u0001"+
+		"\n\u0001\n\u0001\u000b\u0001\u000b\u0001\u000b\u0001\u000b\u0001\u000b"+
+		"\u0001\u000b\u0001\u000b\u0001\u000b\u0001\f\u0001\f\u0001\f\u0001\r\u0001"+
+		"\r\u0001\r\u0001\r\u0001\r\u0001\r\u0001\r\u0001\u000e\u0001\u000e\u0001"+
+		"\u000e\u0001\u000e\u0001\u000e\u0001\u000f\u0001\u000f\u0001\u000f\u0001"+
+		"\u000f\u0001\u000f\u0001\u0010\u0001\u0010\u0001\u0010\u0001\u0010\u0001"+
+		"\u0010\u0001\u0010\u0001\u0010\u0001\u0010\u0001\u0011\u0001\u0011\u0001"+
+		"\u0011\u0001\u0011\u0001\u0011\u0001\u0011\u0001\u0012\u0001\u0012\u0001"+
+		"\u0012\u0001\u0012\u0001\u0012\u0001\u0012\u0001\u0012\u0001\u0012\u0001"+
+		"\u0013\u0001\u0013\u0001\u0013\u0001\u0013\u0001\u0013\u0001\u0013\u0001"+
+		"\u0014\u0001\u0014\u0001\u0014\u0001\u0014\u0001\u0015\u0001\u0015\u0001"+
+		"\u0015\u0001\u0016\u0001\u0016\u0001\u0016\u0001\u0016\u0001\u0016\u0001"+
+		"\u0017\u0001\u0017\u0001\u0017\u0001\u0017\u0001\u0017\u0001\u0017\u0001"+
+		"\u0017\u0001\u0017\u0001\u0017\u0001\u0017\u0001\u0017\u0001\u0018\u0001"+
+		"\u0018\u0001\u0018\u0001\u0018\u0001\u0018\u0001\u0018\u0001\u0018\u0001"+
+		"\u0019\u0001\u0019\u0001\u0019\u0001\u0019\u0001\u0019\u0001\u0019\u0001"+
+		"\u0019\u0001\u0019\u0001\u0019\u0001\u0019\u0001\u0019\u0001\u001a\u0001"+
+		"\u001a\u0001\u001a\u0001\u001a\u0001\u001b\u0001\u001b\u0001\u001b\u0001"+
+		"\u001b\u0001\u001b\u0001\u001b\u0001\u001b\u0001\u001b\u0001\u001b\u0001"+
+		"\u001b\u0001\u001c\u0001\u001c\u0001\u001c\u0001\u001c\u0001\u001c\u0001"+
+		"\u001d\u0001\u001d\u0001\u001d\u0001\u001d\u0001\u001d\u0001\u001d\u0001"+
+		"\u001d\u0001\u001e\u0001\u001e\u0001\u001e\u0001\u001e\u0001\u001f\u0001"+
+		"\u001f\u0001\u001f\u0001\u001f\u0001\u001f\u0001\u001f\u0001\u001f\u0001"+
+		"\u001f\u0001 \u0001 \u0001 \u0001 \u0001 \u0001 \u0001 \u0001 \u0001!"+
+		"\u0001!\u0001!\u0001!\u0001!\u0001!\u0001!\u0001!\u0001!\u0001!\u0001"+
+		"\"\u0001\"\u0001\"\u0001\"\u0001\"\u0001\"\u0001\"\u0001#\u0001#\u0001"+
+		"#\u0001#\u0001#\u0001#\u0001#\u0001$\u0001$\u0001$\u0001$\u0001$\u0001"+
+		"$\u0001%\u0001%\u0001%\u0001%\u0001%\u0001%\u0001%\u0001&\u0001&\u0001"+
+		"&\u0001&\u0001&\u0001&\u0001&\u0001&\u0001&\u0001\'\u0001\'\u0001\'\u0001"+
+		"\'\u0001\'\u0001\'\u0001(\u0001(\u0001(\u0001(\u0001(\u0001(\u0001(\u0001"+
+		")\u0001)\u0001)\u0001)\u0001)\u0001)\u0001)\u0001)\u0001)\u0001)\u0001"+
+		")\u0001)\u0001)\u0001*\u0001*\u0001*\u0001*\u0001*\u0001+\u0001+\u0001"+
+		"+\u0001+\u0001+\u0001+\u0001,\u0001,\u0001,\u0001,\u0001,\u0001,\u0001"+
+		",\u0001-\u0001-\u0001-\u0001-\u0001-\u0001-\u0001-\u0001-\u0001-\u0001"+
+		"-\u0001.\u0001.\u0001.\u0001.\u0001/\u0001/\u0001/\u0001/\u0001/\u0001"+
+		"0\u00010\u00010\u00010\u00010\u00010\u00010\u00010\u00010\u00011\u0001"+
+		"1\u00011\u00011\u00011\u00011\u00012\u00012\u00012\u00012\u00012\u0001"+
+		"2\u00012\u00013\u00013\u00013\u00013\u00013\u00014\u00014\u00014\u0001"+
+		"4\u00014\u00014\u00014\u00014\u00014\u00015\u00015\u00015\u00015\u0001"+
+		"5\u00015\u00015\u00015\u00016\u00016\u00016\u00016\u00016\u00016\u0001"+
+		"7\u00017\u00017\u00018\u00018\u00018\u00018\u00018\u00019\u00019\u0001"+
+		"9\u00019\u00019\u00019\u00019\u00019\u00019\u0001:\u0001:\u0001:\u0001"+
+		":\u0001:\u0001;\u0001;\u0001;\u0001;\u0001;\u0001;\u0001;\u0001;\u0001"+
+		";\u0001;\u0001;\u0001<\u0001<\u0001<\u0001<\u0001=\u0001=\u0001=\u0001"+
+		"=\u0001=\u0001=\u0001>\u0001>\u0001>\u0001>\u0001>\u0001>\u0001>\u0001"+
+		"?\u0001?\u0001?\u0001?\u0001?\u0001?\u0001?\u0001@\u0001@\u0001@\u0001"+
+		"@\u0001@\u0001@\u0001@\u0001@\u0001A\u0001A\u0001A\u0001A\u0001A\u0001"+
+		"A\u0001A\u0001A\u0001A\u0001A\u0001A\u0001B\u0001B\u0001B\u0003B\u02d5"+
+		"\bB\u0001B\u0004B\u02d8\bB\u000bB\fB\u02d9\u0001B\u0003B\u02dd\bB\u0003"+
+		"B\u02df\bB\u0001B\u0003B\u02e2\bB\u0001C\u0001C\u0001C\u0001C\u0005C\u02e8"+
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+		"\u0000\u03b5\u00ce\u0001\u0000\u0000\u0000\u03b6\u03b7\u0005*\u0000\u0000"+
+		"\u03b7\u00d0\u0001\u0000\u0000\u0000\u03b8\u03b9\u0005/\u0000\u0000\u03b9"+
+		"\u00d2\u0001\u0000\u0000\u0000\u03ba\u03bb\u0005&\u0000\u0000\u03bb\u00d4"+
+		"\u0001\u0000\u0000\u0000\u03bc\u03bd\u0005|\u0000\u0000\u03bd\u00d6\u0001"+
+		"\u0000\u0000\u0000\u03be\u03bf\u0005^\u0000\u0000\u03bf\u00d8\u0001\u0000"+
+		"\u0000\u0000\u03c0\u03c1\u0005%\u0000\u0000\u03c1\u00da\u0001\u0000\u0000"+
+		"\u0000\u03c2\u03c3\u0005+\u0000\u0000\u03c3\u03c4\u0005=\u0000\u0000\u03c4"+
+		"\u00dc\u0001\u0000\u0000\u0000\u03c5\u03c6\u0005-\u0000\u0000\u03c6\u03c7"+
+		"\u0005=\u0000\u0000\u03c7\u00de\u0001\u0000\u0000\u0000\u03c8\u03c9\u0005"+
+		"*\u0000\u0000\u03c9\u03ca\u0005=\u0000\u0000\u03ca\u00e0\u0001\u0000\u0000"+
+		"\u0000\u03cb\u03cc\u0005/\u0000\u0000\u03cc\u03cd\u0005=\u0000\u0000\u03cd"+
+		"\u00e2\u0001\u0000\u0000\u0000\u03ce\u03cf\u0005&\u0000\u0000\u03cf\u03d0"+
+		"\u0005=\u0000\u0000\u03d0\u00e4\u0001\u0000\u0000\u0000\u03d1\u03d2\u0005"+
+		"|\u0000\u0000\u03d2\u03d3\u0005=\u0000\u0000\u03d3\u00e6\u0001\u0000\u0000"+
+		"\u0000\u03d4\u03d5\u0005^\u0000\u0000\u03d5\u03d6\u0005=\u0000\u0000\u03d6"+
+		"\u00e8\u0001\u0000\u0000\u0000\u03d7\u03d8\u0005%\u0000\u0000\u03d8\u03d9"+
+		"\u0005=\u0000\u0000\u03d9\u00ea\u0001\u0000\u0000\u0000\u03da\u03db\u0005"+
+		"<\u0000\u0000\u03db\u03dc\u0005<\u0000\u0000\u03dc\u03dd\u0005=\u0000"+
+		"\u0000\u03dd\u00ec\u0001\u0000\u0000\u0000\u03de\u03df\u0005>\u0000\u0000"+
+		"\u03df\u03e0\u0005>\u0000\u0000\u03e0\u03e1\u0005=\u0000\u0000\u03e1\u00ee"+
+		"\u0001\u0000\u0000\u0000\u03e2\u03e3\u0005>\u0000\u0000\u03e3\u03e4\u0005"+
+		">\u0000\u0000\u03e4\u03e5\u0005>\u0000\u0000\u03e5\u03e6\u0005=\u0000"+
+		"\u0000\u03e6\u00f0\u0001\u0000\u0000\u0000\u03e7\u03e8\u0005-\u0000\u0000"+
+		"\u03e8\u03e9\u0005>\u0000\u0000\u03e9\u00f2\u0001\u0000\u0000\u0000\u03ea"+
+		"\u03eb\u0005:\u0000\u0000\u03eb\u03ec\u0005:\u0000\u0000\u03ec\u00f4\u0001"+
+		"\u0000\u0000\u0000\u03ed\u03ee\u0005@\u0000\u0000\u03ee\u00f6\u0001\u0000"+
+		"\u0000\u0000\u03ef\u03f0\u0005.\u0000\u0000\u03f0\u03f1\u0005.\u0000\u0000"+
+		"\u03f1\u03f2\u0005.\u0000\u0000\u03f2\u00f8\u0001\u0000\u0000\u0000\u03f3"+
+		"\u03f5\u0007\u0011\u0000\u0000\u03f4\u03f3\u0001\u0000\u0000\u0000\u03f5"+
+		"\u03f6\u0001\u0000\u0000\u0000\u03f6\u03f4\u0001\u0000\u0000\u0000\u03f6"+
+		"\u03f7\u0001\u0000\u0000\u0000\u03f7\u03f8\u0001\u0000\u0000\u0000\u03f8"+
+		"\u03f9\u0006|\u0000\u0000\u03f9\u00fa\u0001\u0000\u0000\u0000\u03fa\u03fb"+
+		"\u0005/\u0000\u0000\u03fb\u03fc\u0005*\u0000\u0000\u03fc\u0400\u0001\u0000"+
+		"\u0000\u0000\u03fd\u03ff\t\u0000\u0000\u0000\u03fe\u03fd\u0001\u0000\u0000"+
+		"\u0000\u03ff\u0402\u0001\u0000\u0000\u0000\u0400\u0401\u0001\u0000\u0000"+
+		"\u0000\u0400\u03fe\u0001\u0000\u0000\u0000\u0401\u0403\u0001\u0000\u0000"+
+		"\u0000\u0402\u0400\u0001\u0000\u0000\u0000\u0403\u0404\u0005*\u0000\u0000"+
+		"\u0404\u0405\u0005/\u0000\u0000\u0405\u0406\u0001\u0000\u0000\u0000\u0406"+
+		"\u0407\u0006}\u0000\u0000\u0407\u00fc\u0001\u0000\u0000\u0000\u0408\u0409"+
+		"\u0005/\u0000\u0000\u0409\u040a\u0005/\u0000\u0000\u040a\u040e\u0001\u0000"+
+		"\u0000\u0000\u040b\u040d\b\u0010\u0000\u0000\u040c\u040b\u0001\u0000\u0000"+
+		"\u0000\u040d\u0410\u0001\u0000\u0000\u0000\u040e\u040c\u0001\u0000\u0000"+
+		"\u0000\u040e\u040f\u0001\u0000\u0000\u0000\u040f\u0411\u0001\u0000\u0000"+
+		"\u0000\u0410\u040e\u0001\u0000\u0000\u0000\u0411\u0412\u0006~\u0000\u0000"+
+		"\u0412\u00fe\u0001\u0000\u0000\u0000\u0413\u0417\u0003\u010d\u0086\u0000"+
+		"\u0414\u0416\u0003\u010b\u0085\u0000\u0415\u0414\u0001\u0000\u0000\u0000"+
+		"\u0416\u0419\u0001\u0000\u0000\u0000\u0417\u0415\u0001\u0000\u0000\u0000"+
+		"\u0417\u0418\u0001\u0000\u0000\u0000\u0418\u0100\u0001\u0000\u0000\u0000"+
+		"\u0419\u0417\u0001\u0000\u0000\u0000\u041a\u041c\u0007\u0012\u0000\u0000"+
+		"\u041b\u041d\u0007\f\u0000\u0000\u041c\u041b\u0001\u0000\u0000\u0000\u041c"+
+		"\u041d\u0001\u0000\u0000\u0000\u041d\u041e\u0001\u0000\u0000\u0000\u041e"+
+		"\u041f\u0003\u0109\u0084\u0000\u041f\u0102\u0001\u0000\u0000\u0000\u0420"+
+		"\u0421\u0005\\\u0000\u0000\u0421\u0436\u0007\u0013\u0000\u0000\u0422\u0427"+
+		"\u0005\\\u0000\u0000\u0423\u0425\u0007\u0014\u0000\u0000\u0424\u0423\u0001"+
+		"\u0000\u0000\u0000\u0424\u0425\u0001\u0000\u0000\u0000\u0425\u0426\u0001"+
+		"\u0000\u0000\u0000\u0426\u0428\u0007\u0005\u0000\u0000\u0427\u0424\u0001"+
+		"\u0000\u0000\u0000\u0427\u0428\u0001\u0000\u0000\u0000\u0428\u0429\u0001"+
+		"\u0000\u0000\u0000\u0429\u0436\u0007\u0005\u0000\u0000\u042a\u042c\u0005"+
+		"\\\u0000\u0000\u042b\u042d\u0005u\u0000\u0000\u042c\u042b\u0001\u0000"+
+		"\u0000\u0000\u042d\u042e\u0001\u0000\u0000\u0000\u042e\u042c\u0001\u0000"+
+		"\u0000\u0000\u042e\u042f\u0001\u0000\u0000\u0000\u042f\u0430\u0001\u0000"+
+		"\u0000\u0000\u0430\u0431\u0003\u0107\u0083\u0000\u0431\u0432\u0003\u0107"+
+		"\u0083\u0000\u0432\u0433\u0003\u0107\u0083\u0000\u0433\u0434\u0003\u0107"+
+		"\u0083\u0000\u0434\u0436\u0001\u0000\u0000\u0000\u0435\u0420\u0001\u0000"+
+		"\u0000\u0000\u0435\u0422\u0001\u0000\u0000\u0000\u0435\u042a\u0001\u0000"+
+		"\u0000\u0000\u0436\u0104\u0001\u0000\u0000\u0000\u0437\u0440\u0003\u0107"+
+		"\u0083\u0000\u0438\u043b\u0003\u0107\u0083\u0000\u0439\u043b\u0005_\u0000"+
+		"\u0000\u043a\u0438\u0001\u0000\u0000\u0000\u043a\u0439\u0001\u0000\u0000"+
+		"\u0000\u043b\u043e\u0001\u0000\u0000\u0000\u043c\u043a\u0001\u0000\u0000"+
+		"\u0000\u043c\u043d\u0001\u0000\u0000\u0000\u043d\u043f\u0001\u0000\u0000"+
+		"\u0000\u043e\u043c\u0001\u0000\u0000\u0000\u043f\u0441\u0003\u0107\u0083"+
+		"\u0000\u0440\u043c\u0001\u0000\u0000\u0000\u0440\u0441\u0001\u0000\u0000"+
+		"\u0000\u0441\u0106\u0001\u0000\u0000\u0000\u0442\u0443\u0007\u0003\u0000"+
+		"\u0000\u0443\u0108\u0001\u0000\u0000\u0000\u0444\u044c\u0007\u0015\u0000"+
+		"\u0000\u0445\u0447\u0007\u0016\u0000\u0000\u0446\u0445\u0001\u0000\u0000"+
+		"\u0000\u0447\u044a\u0001\u0000\u0000\u0000\u0448\u0446\u0001\u0000\u0000"+
+		"\u0000\u0448\u0449\u0001\u0000\u0000\u0000\u0449\u044b\u0001\u0000\u0000"+
+		"\u0000\u044a\u0448\u0001\u0000\u0000\u0000\u044b\u044d\u0007\u0015\u0000"+
+		"\u0000\u044c\u0448\u0001\u0000\u0000\u0000\u044c\u044d\u0001\u0000\u0000"+
+		"\u0000\u044d\u010a\u0001\u0000\u0000\u0000\u044e\u0451\u0003\u010d\u0086"+
+		"\u0000\u044f\u0451\u0007\u0015\u0000\u0000\u0450\u044e\u0001\u0000\u0000"+
+		"\u0000\u0450\u044f\u0001\u0000\u0000\u0000\u0451\u010c\u0001\u0000\u0000"+
+		"\u0000\u0452\u0457\u0007\u0017\u0000\u0000\u0453\u0457\b\u0018\u0000\u0000"+
+		"\u0454\u0455\u0007\u0019\u0000\u0000\u0455\u0457\u0007\u001a\u0000\u0000"+
+		"\u0456\u0452\u0001\u0000\u0000\u0000\u0456\u0453\u0001\u0000\u0000\u0000"+
+		"\u0456\u0454\u0001\u0000\u0000\u0000\u0457\u010e\u0001\u0000\u0000\u0000"+
+		"3\u0000\u02d4\u02d9\u02dc\u02de\u02e1\u02e9\u02ed\u02f0\u02f6\u02fd\u0301"+
+		"\u0304\u030c\u0310\u0313\u0318\u031c\u031f\u0322\u0327\u032a\u032c\u0332"+
+		"\u0335\u0339\u033d\u0341\u034c\u0351\u0358\u035a\u0366\u036c\u036e\u03f6"+
+		"\u0400\u040e\u0417\u041c\u0424\u0427\u042e\u0435\u043a\u043c\u0440\u0448"+
+		"\u044c\u0450\u0456\u0001\u0000\u0001\u0000";
+	public static final ATN _ATN =
+		new ATNDeserializer().deserialize(_serializedATN.toCharArray());
+	static {
+		_decisionToDFA = new DFA[_ATN.getNumberOfDecisions()];
+		for (int i = 0; i < _ATN.getNumberOfDecisions(); i++) {
+			_decisionToDFA[i] = new DFA(_ATN.getDecisionState(i), i);
+		}
+	}
+}

gen/Java17Lexer.tokens

@@ -0,0 +1,242 @@
+ABSTRACT=1
+ASSERT=2
+BOOLEAN=3
+BREAK=4
+BYTE=5
+CASE=6
+CATCH=7
+CHAR=8
+CLASS=9
+CONST=10
+CONTINUE=11
+DEFAULT=12
+DO=13
+DOUBLE=14
+ELSE=15
+ENUM=16
+EXTENDS=17
+FINAL=18
+FINALLY=19
+FLOAT=20
+FOR=21
+IF=22
+GOTO=23
+IMPLEMENTS=24
+IMPORT=25
+INSTANCEOF=26
+INT=27
+INTERFACE=28
+LONG=29
+NATIVE=30
+NEW=31
+PACKAGE=32
+PRIVATE=33
+PROTECTED=34
+PUBLIC=35
+RETURN=36
+SHORT=37
+STATIC=38
+STRICTFP=39
+SUPER=40
+SWITCH=41
+SYNCHRONIZED=42
+THIS=43
+THROW=44
+THROWS=45
+TRANSIENT=46
+TRY=47
+VOID=48
+VOLATILE=49
+WHILE=50
+MODULE=51
+OPEN=52
+REQUIRES=53
+EXPORTS=54
+OPENS=55
+TO=56
+USES=57
+PROVIDES=58
+WITH=59
+TRANSITIVE=60
+VAR=61
+YIELD=62
+RECORD=63
+SEALED=64
+PERMITS=65
+NON_SEALED=66
+DECIMAL_LITERAL=67
+HEX_LITERAL=68
+OCT_LITERAL=69
+BINARY_LITERAL=70
+FLOAT_LITERAL=71
+HEX_FLOAT_LITERAL=72
+BOOL_LITERAL=73
+CHAR_LITERAL=74
+STRING_LITERAL=75
+TEXT_BLOCK=76
+NULL_LITERAL=77
+LPAREN=78
+RPAREN=79
+LBRACE=80
+RBRACE=81
+LBRACK=82
+RBRACK=83
+SEMI=84
+COMMA=85
+DOT=86
+ASSIGN=87
+GT=88
+LT=89
+BANG=90
+TILDE=91
+QUESTION=92
+COLON=93
+EQUAL=94
+LE=95
+GE=96
+NOTEQUAL=97
+AND=98
+OR=99
+INC=100
+DEC=101
+ADD=102
+SUB=103
+MUL=104
+DIV=105
+BITAND=106
+BITOR=107
+CARET=108
+MOD=109
+ADD_ASSIGN=110
+SUB_ASSIGN=111
+MUL_ASSIGN=112
+DIV_ASSIGN=113
+AND_ASSIGN=114
+OR_ASSIGN=115
+XOR_ASSIGN=116
+MOD_ASSIGN=117
+LSHIFT_ASSIGN=118
+RSHIFT_ASSIGN=119
+URSHIFT_ASSIGN=120
+ARROW=121
+COLONCOLON=122
+AT=123
+ELLIPSIS=124
+WS=125
+COMMENT=126
+LINE_COMMENT=127
+IDENTIFIER=128
+'abstract'=1
+'assert'=2
+'boolean'=3
+'break'=4
+'byte'=5
+'case'=6
+'catch'=7
+'char'=8
+'class'=9
+'const'=10
+'continue'=11
+'default'=12
+'do'=13
+'double'=14
+'else'=15
+'enum'=16
+'extends'=17
+'final'=18
+'finally'=19
+'float'=20
+'for'=21
+'if'=22
+'goto'=23
+'implements'=24
+'import'=25
+'instanceof'=26
+'int'=27
+'interface'=28
+'long'=29
+'native'=30
+'new'=31
+'package'=32
+'private'=33
+'protected'=34
+'public'=35
+'return'=36
+'short'=37
+'static'=38
+'strictfp'=39
+'super'=40
+'switch'=41
+'synchronized'=42
+'this'=43
+'throw'=44
+'throws'=45
+'transient'=46
+'try'=47
+'void'=48
+'volatile'=49
+'while'=50
+'module'=51
+'open'=52
+'requires'=53
+'exports'=54
+'opens'=55
+'to'=56
+'uses'=57
+'provides'=58
+'with'=59
+'transitive'=60
+'var'=61
+'yield'=62
+'record'=63
+'sealed'=64
+'permits'=65
+'non-sealed'=66
+'null'=77
+'('=78
+')'=79
+'{'=80
+'}'=81
+'['=82
+']'=83
+';'=84
+','=85
+'.'=86
+'='=87
+'>'=88
+'<'=89
+'!'=90
+'~'=91
+'?'=92
+':'=93
+'=='=94
+'<='=95
+'>='=96
+'!='=97
+'&&'=98
+'||'=99
+'++'=100
+'--'=101
+'+'=102
+'-'=103
+'*'=104
+'/'=105
+'&'=106
+'|'=107
+'^'=108
+'%'=109
+'+='=110
+'-='=111
+'*='=112
+'/='=113
+'&='=114
+'|='=115
+'^='=116
+'%='=117
+'<<='=118
+'>>='=119
+'>>>='=120
+'->'=121
+'::'=122
+'@'=123
+'...'=124

gen/Java17Parser.tokens

@@ -0,0 +1,242 @@
+ABSTRACT=1
+ASSERT=2
+BOOLEAN=3
+BREAK=4
+BYTE=5
+CASE=6
+CATCH=7
+CHAR=8
+CLASS=9
+CONST=10
+CONTINUE=11
+DEFAULT=12
+DO=13
+DOUBLE=14
+ELSE=15
+ENUM=16
+EXTENDS=17
+FINAL=18
+FINALLY=19
+FLOAT=20
+FOR=21
+IF=22
+GOTO=23
+IMPLEMENTS=24
+IMPORT=25
+INSTANCEOF=26
+INT=27
+INTERFACE=28
+LONG=29
+NATIVE=30
+NEW=31
+PACKAGE=32
+PRIVATE=33
+PROTECTED=34
+PUBLIC=35
+RETURN=36
+SHORT=37
+STATIC=38
+STRICTFP=39
+SUPER=40
+SWITCH=41
+SYNCHRONIZED=42
+THIS=43
+THROW=44
+THROWS=45
+TRANSIENT=46
+TRY=47
+VOID=48
+VOLATILE=49
+WHILE=50
+MODULE=51
+OPEN=52
+REQUIRES=53
+EXPORTS=54
+OPENS=55
+TO=56
+USES=57
+PROVIDES=58
+WITH=59
+TRANSITIVE=60
+VAR=61
+YIELD=62
+RECORD=63
+SEALED=64
+PERMITS=65
+NON_SEALED=66
+DECIMAL_LITERAL=67
+HEX_LITERAL=68
+OCT_LITERAL=69
+BINARY_LITERAL=70
+FLOAT_LITERAL=71
+HEX_FLOAT_LITERAL=72
+BOOL_LITERAL=73
+CHAR_LITERAL=74
+STRING_LITERAL=75
+TEXT_BLOCK=76
+NULL_LITERAL=77
+LPAREN=78
+RPAREN=79
+LBRACE=80
+RBRACE=81
+LBRACK=82
+RBRACK=83
+SEMI=84
+COMMA=85
+DOT=86
+ASSIGN=87
+GT=88
+LT=89
+BANG=90
+TILDE=91
+QUESTION=92
+COLON=93
+EQUAL=94
+LE=95
+GE=96
+NOTEQUAL=97
+AND=98
+OR=99
+INC=100
+DEC=101
+ADD=102
+SUB=103
+MUL=104
+DIV=105
+BITAND=106
+BITOR=107
+CARET=108
+MOD=109
+ADD_ASSIGN=110
+SUB_ASSIGN=111
+MUL_ASSIGN=112
+DIV_ASSIGN=113
+AND_ASSIGN=114
+OR_ASSIGN=115
+XOR_ASSIGN=116
+MOD_ASSIGN=117
+LSHIFT_ASSIGN=118
+RSHIFT_ASSIGN=119
+URSHIFT_ASSIGN=120
+ARROW=121
+COLONCOLON=122
+AT=123
+ELLIPSIS=124
+WS=125
+COMMENT=126
+LINE_COMMENT=127
+IDENTIFIER=128
+'abstract'=1
+'assert'=2
+'boolean'=3
+'break'=4
+'byte'=5
+'case'=6
+'catch'=7
+'char'=8
+'class'=9
+'const'=10
+'continue'=11
+'default'=12
+'do'=13
+'double'=14
+'else'=15
+'enum'=16
+'extends'=17
+'final'=18
+'finally'=19
+'float'=20
+'for'=21
+'if'=22
+'goto'=23
+'implements'=24
+'import'=25
+'instanceof'=26
+'int'=27
+'interface'=28
+'long'=29
+'native'=30
+'new'=31
+'package'=32
+'private'=33
+'protected'=34
+'public'=35
+'return'=36
+'short'=37
+'static'=38
+'strictfp'=39
+'super'=40
+'switch'=41
+'synchronized'=42
+'this'=43
+'throw'=44
+'throws'=45
+'transient'=46
+'try'=47
+'void'=48
+'volatile'=49
+'while'=50
+'module'=51
+'open'=52
+'requires'=53
+'exports'=54
+'opens'=55
+'to'=56
+'uses'=57
+'provides'=58
+'with'=59
+'transitive'=60
+'var'=61
+'yield'=62
+'record'=63
+'sealed'=64
+'permits'=65
+'non-sealed'=66
+'null'=77
+'('=78
+')'=79
+'{'=80
+'}'=81
+'['=82
+']'=83
+';'=84
+','=85
+'.'=86
+'='=87
+'>'=88
+'<'=89
+'!'=90
+'~'=91
+'?'=92
+':'=93
+'=='=94
+'<='=95
+'>='=96
+'!='=97
+'&&'=98
+'||'=99
+'++'=100
+'--'=101
+'+'=102
+'-'=103
+'*'=104
+'/'=105
+'&'=106
+'|'=107
+'^'=108
+'%'=109
+'+='=110
+'-='=111
+'*='=112
+'/='=113
+'&='=114
+'|='=115
+'^='=116
+'%='=117
+'<<='=118
+'>>='=119
+'>>>='=120
+'->'=121
+'::'=122
+'@'=123
+'...'=124

independentTest.sh

@@ -0,0 +1,40 @@
+#!/usr/bin/env bash
+
+
+REPO="https://gitea.hb.dhbw-stuttgart.de/f.holzwarth/JavaCompilerCore.git"
+TDIR="./testBuild"
+
+rm -rf "$TDIR" 2>/dev/null
+mkdir $TDIR
+
+cd $TDIR
+git clone $REPO .
+git checkout feat/unify-server
+# git checkout 93e1a8787cd94c73f4538f6a348f58613893a584
+# git checkout dad468368b86bdd5a3d3b2754b17617cee0a9107 # 1:55
+# git checkout a0c11b60e8c9d7addcbe0d3a09c9ce2924e9d5c0 # 2:25
+# git checkout 4cddf73e6d6c9116d3e1705c4b27a8e7f18d80c3 # 2:27
+# git checkout 6c2d97b7703d954e4a42eef3ec374bcf313af75c # 2:13
+# git checkout f722a00fbb6e69423d48a890e4a6283471763e64 # 1:35
+# git checkout f0a4a51ce65639ce9a9470ff0fdb538fdf9c02cc # 2:19
+# git checkout 1391206dfe59263cdb22f93371cfd1dd5465d97f # 1:29
+
+date "+%Y.%m.%d %H:%M:%S"
+# sed -i -e 's/source>21/source>23/g' pom.xml
+# sed -i -e 's/target>21/target>23/g' pom.xml
+
+
+mvn clean compile -DskipTests package
+time java -jar target/JavaTXcompiler-0.1-jar-with-dependencies.jar resources/bytecode/javFiles/Matrix.jav;
+
+# mvn clean compile test
+
+
+echo -e "\nCleanup... "
+cd -
+rm -rf "$TDIR" 2>/dev/null
+
+echo -e "\nFinished "
+date "+%Y.%m.%d %H:%M:%S"
+echo -e "\n "
+

pom.xml

@@ -12,37 +12,57 @@ http://maven.apache.org/maven-v4_0_0.xsd">
 	<url>http://maven.apache.org</url>
 	<dependencies>
 		<dependency>
-			<groupId>junit</groupId>
-			<artifactId>junit</artifactId>
-			<version>4.11</version>
+			<groupId>org.junit.jupiter</groupId>
+			<artifactId>junit-jupiter-api</artifactId>
+			<version>5.13.2</version>
 			<scope>test</scope>
 		</dependency>
 		<!-- https://mvnrepository.com/artifact/org.antlr/antlr4 -->
 		<dependency>
 			<groupId>org.antlr</groupId>
 			<artifactId>antlr4</artifactId>
-			<version>4.11.1</version>
+			<version>4.13.2</version>
 		</dependency>
 		<dependency>
 			<groupId>commons-io</groupId>
 			<artifactId>commons-io</artifactId>
-			<version>2.6</version>
+			<version>2.19.0</version>
+		</dependency>
+		<dependency>
+			<groupId>io.github.classgraph</groupId>
+			<artifactId>classgraph</artifactId>
+			<version>4.8.180</version>
 		</dependency>
 		<dependency>
 			<groupId>com.google.guava</groupId>
 			<artifactId>guava</artifactId>
-			<version>22.0</version>
-		</dependency>
-		<dependency>
-			<groupId>org.reflections</groupId>
-			<artifactId>reflections</artifactId>
-			<version>0.9.11</version>
+			<version>33.4.8-jre</version>
 		</dependency>
 		<!-- https://mvnrepository.com/artifact/org.ow2.asm/asm -->
 		<dependency>
 			<groupId>org.ow2.asm</groupId>
 			<artifactId>asm</artifactId>
-			<version>9.5</version>
+			<version>9.8</version>
+		</dependency>
+		<dependency>
+			<groupId>org.java-websocket</groupId>
+			<artifactId>Java-WebSocket</artifactId>
+			<version>1.5.2</version>
+		</dependency>
+		<dependency>
+			<groupId>org.slf4j</groupId>
+			<artifactId>slf4j-simple</artifactId>
+			<version>1.7.25</version>
+		</dependency>
+		<dependency>
+			<groupId>com.fasterxml.jackson.core</groupId>
+			<artifactId>jackson-databind</artifactId>
+			<version>2.17.2</version>
+		</dependency>
+		<dependency>
+			<groupId>com.diogonunes</groupId>
+			<artifactId>JColor</artifactId>
+			<version>5.5.1</version>
 		</dependency>
 	</dependencies>
 
@@ -51,17 +71,17 @@ http://maven.apache.org/maven-v4_0_0.xsd">
 			<plugin>
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-compiler-plugin</artifactId>
-				<version>3.11.0</version>
+				<version>3.14.0</version>
 				<configuration>
 					<compilerArgs>--enable-preview</compilerArgs>
-                    <source>21</source>
-                    <target>21</target>
+                    <source>24</source>
+                    <target>24</target>
                 </configuration>
 			</plugin>
 			<plugin>
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-surefire-plugin</artifactId>
-				<version>3.1.0</version>
+				<version>3.5.3</version>
 				<configuration>
 					<redirectTestOutputToFile>true</redirectTestOutputToFile>
 					<reportsDirectory>${project.build.directory}/test-reports</reportsDirectory>
@@ -77,7 +97,7 @@ http://maven.apache.org/maven-v4_0_0.xsd">
 			<plugin>
 				<groupId>org.antlr</groupId>
 				<artifactId>antlr4-maven-plugin</artifactId>
-				<version>4.11.1</version>
+				<version>4.13.2</version>
 				<executions>
 					<execution>
 						<id>antlr</id>
@@ -90,7 +110,7 @@ http://maven.apache.org/maven-v4_0_0.xsd">
 			<plugin>
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-jar-plugin</artifactId>
-				<version>3.3.0</version>
+				<version>3.4.2</version>
 				<configuration>
 					<archive>
 						<manifest>
@@ -138,4 +158,4 @@ http://maven.apache.org/maven-v4_0_0.xsd">
 			<url>file:///${project.basedir}/maven-repository/</url>
 		</repository>
 	</distributionManagement>
-</project>
+</project>

resources/AllgemeinTest/Bar.java

@@ -0,0 +1,10 @@
+public class Bar{
+
+    void visit(Object o){
+        System.out.println("Object");
+    }
+
+    void visit(Bla f){
+        System.out.println("Foo");
+    }
+}

resources/AllgemeinTest/Box.jav

@@ -1,10 +1,12 @@
-class Box<A> {
+public class Box {
 
-	A a;
+	a;
 
-	Box(A a) {
-		this.a = a;
+	public Box() { }
+	public Box(a) {
+		//this.a = a;
 	}
-}
-
-
+	set(x) {
+	  a = x;
+	}
+}

resources/AllgemeinTest/Foo.jav

@@ -0,0 +1,6 @@
+public class Foo{
+
+    public accept(Bar b){
+        b.visit(this);
+    }
+}

resources/bytecode/javFiles/Assign.jav

@@ -0,0 +1,15 @@
+import java.lang.Integer;
+
+public class Assign {
+    public x = 10;
+    public y = this;
+
+    public call() {
+        return this;
+    }
+
+    public m() {
+        this.call().call().y.x = 20;
+        return x;
+    }
+}

resources/bytecode/javFiles/Box.jav

@@ -1,7 +1,9 @@
-class B { }
-class Box_Main extends B {
-    m(b) {
-       b.m(new Box_Main());
-       b.m(new B());
-    }
-}
+public class Box<A> {
+
+	A a;
+
+	public Box() { }
+	public Box(A a) {
+		//this.a = a;
+	}
+}

resources/bytecode/javFiles/Box.java

@@ -1,3 +0,0 @@
-class Box<A> {
-    void m(A a) { }
-}

resources/bytecode/javFiles/Bug325.jav

@@ -6,7 +6,7 @@ import java.util.stream.Stream;
 
 public class Bug325 {
     public main() {
-      List<Integer> list = new ArrayList<>(List.of(1,2,3,4,5));
+      var list = new ArrayList<>(List.of(1,2,3,4,5));
       var func = x -> x*2;
       return list.stream().map(func).toList();
    }

resources/bytecode/javFiles/Bug332.jav

@@ -0,0 +1,15 @@
+import java.lang.Object;
+
+interface Visitor {
+    public void visit(Object obj);
+    public void visit(ClassA a);
+}
+
+class ClassA {
+    void accept(Visitor v) {
+        v.visit(this);
+    }
+}
+
+public class Bug332 {
+}

resources/bytecode/javFiles/Bug333.jav

@@ -0,0 +1,11 @@
+import java.lang.String;
+
+public class Bug333 {
+    public static String Bar = "Bar";
+}
+
+class Bar {
+    public bar() {
+        String s = Bug333.Bar;
+    }
+}

resources/bytecode/javFiles/Bug337.jav

@@ -0,0 +1,10 @@
+import java.lang.Integer;
+import java.lang.Number;
+import java.lang.Object;
+
+public class Bug337 {
+    public void main() {
+        Fun1$$<Object, Integer> fun1 = x -> x.hashCode() + 1;
+        Fun1$$<Number, Number> fun2 = fun1;
+    }
+}

resources/bytecode/javFiles/Bug338.jav

@@ -0,0 +1,11 @@
+import java.util.List;
+import java.lang.Integer;
+import java.lang.String;
+import java.lang.Object;
+import java.util.List;
+
+public class Bug338 {
+    public hashCode() {
+        return List.of(42);
+    }
+}

resources/bytecode/javFiles/Bug343.jav

@@ -0,0 +1,2 @@
+public record Bug343() {
+}

resources/bytecode/javFiles/Bug363.jav

@@ -0,0 +1,22 @@
+import java.lang.String;
+
+
+public class Bug363 {
+  uncurry (f){
+    return x -> f.apply(x);
+  }
+
+  uncurry (f){
+    return (x, y) -> f.apply(x).apply(y);
+  }
+
+  uncurry (f){
+    return (x, y, z) -> f.apply(x).apply(y).apply(z);
+  }
+
+  public test(){
+    var f = x -> y -> z -> x + y + z;
+    var g = uncurry(f);
+    return g.apply("A", "B", "C"); // Outputs: 6
+  }
+}

resources/bytecode/javFiles/Bug364.jav

@@ -0,0 +1,8 @@
+import java.lang.String;
+
+public class Bug364{
+  public main(){
+    var f = x -> y -> z -> x + y + z;
+    return f.apply("A").apply("B").apply("C");
+  }
+}

resources/bytecode/javFiles/Bug365.jav

@@ -0,0 +1,21 @@
+import java.lang.String;
+import java.lang.Object;
+
+public class Bug365{
+  swap(f){
+    return x -> y -> f.apply(y).apply(x);
+  }
+
+  swap(Fun1$$<String, Fun1$$<String, Fun1$$<String, Object>>> f){
+    return x -> y -> z -> f.apply(z).apply(y).apply(x);
+  }
+
+  public ex1() {
+    var func = x -> y -> z -> x + y + z;
+    return func.apply("A").apply("B").apply("C");
+  }
+  public ex2() {
+    var func = x -> y -> z -> x + y + z;
+    return swap(func).apply("A").apply("B").apply("C");
+  }
+}

resources/bytecode/javFiles/Bug366.jav

@@ -0,0 +1,12 @@
+import java.lang.Integer;
+
+public class Bug366 {
+    public static lambda() {
+        return (a, b) -> a + b;
+    }
+
+    public static test() {
+        var l = lambda();
+        return l.apply(10, 20);
+    }
+}

resources/bytecode/javFiles/Bug371.jav

@@ -0,0 +1,10 @@
+import java.lang.Boolean;
+
+public class Bug371 {
+    static m1(x, y) { return x || y; }
+    static m2(x, y) { return x && y; }
+
+    public static test() {
+        return m2(m1(true, false), true);
+    }
+}

resources/bytecode/javFiles/Bug373.jav

@@ -0,0 +1,17 @@
+import java.lang.Boolean;
+import java.lang.Integer;
+import java.lang.System;
+import java.io.PrintStream;
+import java.lang.Character;
+
+public class Bug373 {
+    public static main() {
+        System.out.println(true);
+        System.out.println(false);
+        System.out.println(1);
+        System.out.println(1l);
+        System.out.println(1.0);
+        System.out.println(1.0f);
+        System.out.println('a');
+    }
+}

resources/bytecode/javFiles/BugXXX.jav

@@ -1,16 +0,0 @@
-import java.util.ArrayList;
-import java.util.List;
-import java.util.Optional;
-import java.lang.String;
-import java.util.stream.Stream;
-import java.util.function.Function;
-import java.util.function.Predicate;
-import java.lang.Integer;
-
-class BugXXX {
-    public main() {
-        List<Integer> i = new ArrayList<>(List.of(1,2,3,4,5,6,7,8,9,10));
-        Optional<Integer> tmp = i.stream().filter(x -> x == 5).map(x -> x*2).findFirst();
-        return tmp;
-    }
-}

resources/bytecode/javFiles/GenericRecord.jav

@@ -0,0 +1 @@
+public record GenericRecord<T>(T a) {}

resources/bytecode/javFiles/GenericRecordSwitchCase.jav

@@ -0,0 +1,24 @@
+import java.lang.String;
+import java.lang.Integer;
+
+sealed interface List permits LinkedElem, Elem {}
+
+
+public record LinkedElem<T>(T a,List l) implements List{}
+public record Elem<T>(T c) implements List{}
+
+public class GenericRecordSwitchCase {
+    public main(o) {
+         return switch(o) {
+                case LinkedElem(a, Elem(e)) -> a ;
+                case LinkedElem(a, LinkedElem(e, Elem(f))) -> a;
+         };
+    }
+}
+
+
+
+
+
+
+

resources/bytecode/javFiles/ImportWildcard.jav

@@ -0,0 +1,5 @@
+import java.lang.*;
+
+public class ImportWildcard {
+    m(a, b) { return a * b; }
+}

resources/bytecode/javFiles/LamRunnable.jav

@@ -1,16 +0,0 @@
-import java.lang.Runnable;
-import java.lang.System;
-import java.lang.String;
-import java.io.PrintStream;
-
-public class LamRunnable {
-
-	public LamRunnable() {
-		Runnable lam = () -> {
-		    System.out.println("lambda");
-		};
-
-		lam.run();
-	}
-}
- 

resources/bytecode/javFiles/Main.jav

@@ -0,0 +1,14 @@
+import java.lang.Object;
+import java.lang.System;
+import java.lang.Iterable;
+import java.io.PrintStream;
+import java.util.List;
+import java.lang.String;
+
+class Main {
+    static main(args) {
+        for (var arg : args) {
+            System.out.println(arg);
+        }
+    }
+}

resources/bytecode/javFiles/OverloadNestedPattern.jav

@@ -0,0 +1,20 @@
+import java.lang.Object;
+import java.lang.Integer;
+import java.lang.Float;
+
+public record R(Object nested) {}
+
+public class OverloadNestedPattern {
+
+    public Integer m(R(R(Integer a)), R(Integer b)) {
+        return 1;
+    }
+
+    public Integer m(R(R(Float a)), R(Float b)) {
+        return 2;
+    }
+
+    public Integer m(R(Integer a), R(Integer b)) {
+        return 3;
+    }
+}

resources/bytecode/javFiles/OverloadPattern.jav

@@ -2,15 +2,31 @@ import java.lang.Integer;
 import java.lang.Number;
 import java.lang.Float;
 
-record Point(Number x, Number y) {}
+public record Point(Number x, Number y) {}
 
 public class OverloadPattern {
-    public m(Point(Integer x, Integer y)) {
-        return x + y;
+    public Number m(Point(Integer x, Integer y), Point(Float a, Float b)) {
+        return 1;
     }
 
-    public m(Point(Float x, Float y)) {
-        return x * y;
+    public Number m(Point(Integer x, Integer y), Point(Integer a, Integer b)) {
+        return 2;
+    }
+
+    public Number m(Point(Float x, Float y), Point(Integer a, Integer b)) {
+        return 3;
+    }
+
+    public Number m(Point(Float x, Float y), Point(Float a, Float b)) {
+        return 4;
+    }
+
+    public Number m(Point(Integer x, Integer y)) {
+        return 5;
+    }
+
+    public Number m(Point(Float x, Float y)) {
+        return 6;
     }
 
     public m(Integer x) {

resources/bytecode/javFiles/PatternMatchingHaskellStyle.jav

@@ -0,0 +1,21 @@
+import java.lang.Boolean;
+
+sealed interface List<T> permits LinkedElem, Elem {}
+
+public record LinkedElem<T>(T a, List<T> l) implements List<T> {}
+public record Elem<T>(T a) implements List<T> {}
+
+public class PatternMatchingHaskellStyle {
+
+    public append(LinkedElem(a, b), list2) {
+        return handleAppend(a, b, list2);
+    }
+
+    private handleAppend(a, Elem(e), list2) {
+        return new LinkedElem<>(a, new LinkedElem<>(e, list2));
+    }
+
+    private handleAppend(a, LinkedElem(e,r), list2) {
+        return new LinkedElem<>(a, append(new LinkedElem(e, r), list2));
+    }
+}

resources/bytecode/javFiles/PatternMatchingListAppend.jav

@@ -0,0 +1,26 @@
+import java.lang.Boolean;
+import java.lang.Object;
+
+sealed interface List<T> permits Cons, Empty {}
+
+public record Cons<T>(T a, List<T> l) implements List<T> {}
+public record Empty<T>() implements List<T> {}
+
+public class PatternMatchingListAppend {
+
+    public append(Cons(a, b), list2) {
+        return new Cons<>(a, append(b, list2));
+    }
+
+    public append(Empty(), list2) {
+        return list2;
+    }
+
+    /*public append(a, list2) {
+        switch(a) {
+            case Cons(x, y) -> ...
+            case Empty() ->
+        }
+    }*/
+
+}

resources/bytecode/javFiles/PatternMatchingLiteralStyle.jav

@@ -0,0 +1,17 @@
+import java.lang.Integer;
+import java.lang.Double;
+import java.lang.Number;
+import java.lang.String;
+
+public record R(Number n) {}
+
+public class SwitchOverload {
+
+    public f(){}
+
+    public m(r) {
+        return switch(r) {
+            case R("test") -> f();
+        };
+    }
+}

resources/bytecode/javFiles/Switch.jav

@@ -11,7 +11,7 @@ public class Switch {
         case Rec(Integer a, Float b) -> a + 10;
         case Rec(Integer a, Rec(Integer b, Integer c)) -> a + b + c;
         case Integer i -> i;
-        default -> 0;
+        //default -> 0;
         };
     }
 }

resources/bytecode/javFiles/SwitchAppend.jav

@@ -0,0 +1,16 @@
+sealed interface List<T> permits LinkedElem, Elem {}
+
+public record LinkedElem<T>(T a, List<T> l) implements List<T> {}
+public record Elem<T>(T a) implements List<T> {}
+
+public class SwitchAppend {
+   public append(l1, l2) {
+       return switch(l1) {
+           case LinkedElem(a, Elem(e)) -> new LinkedElem<>(a, new LinkedElem<>(e, l2));
+           case LinkedElem(a, r) -> new LinkedElem<>(a, append(r, l2));
+           //Alternativ:
+	       //case LinkedElem(a, LinkedElem(e, r)) -> new LinkedElem<>(a, append(new LinkedElem(e, r), l2));
+           //default -> null;
+       };
+   }
+}

resources/bytecode/javFiles/SwitchCaseHeritageDetection.jav

@@ -0,0 +1,22 @@
+import java.lang.Integer;
+import java.lang.Object;
+import java.lang.Float;
+import java.lang.String;
+
+public class NumberOrText{}
+public class Text extends NumberOrText{};
+public class Number extends NumberOrText{};
+
+
+public record Cons(Integer a, NumberOrText l){}
+
+
+public class SwitchCaseHeritageDetection {
+    public main(o) {
+         return switch(o) {
+                case Cons(a, Text b) -> "Second Element is a Text";
+                case Cons(a, Number b) -> "Second Element is a Number";
+                default -> "None of the above cases";
+         };
+    }
+}

resources/bytecode/javFiles/SwitchInfered.jav

@@ -0,0 +1,17 @@
+import java.lang.Integer;
+import java.lang.Object;
+import java.lang.Float;
+import java.lang.String;
+
+public record Rec(Object a, Object b) {}
+
+
+
+public class SwitchInfered {
+    public main(o) {
+        return switch (o) {
+        case Rec(a, b) -> "asd";
+        default -> "cde";
+        };
+    }
+}

resources/bytecode/javFiles/SwitchNestedValue.jav

@@ -0,0 +1,14 @@
+import java.lang.Object;
+import java.lang.Integer;
+
+public record R(Integer i) {}
+
+public class SwitchNestedValue {
+    public main(r) {
+        return switch(r) {
+            case R(10) -> 1;
+            case R(20) -> 2;
+            case R(i) -> 3;
+        };
+    }
+}

resources/bytecode/javFiles/SwitchOverload.jav

@@ -0,0 +1,21 @@
+import java.lang.Integer;
+import java.lang.Double;
+import java.lang.Number;
+
+public record R(Number n) {}
+
+public class SwitchOverload {
+
+    Number f(Double d) { return d * 2; }
+    Number f(Integer i) { return i * 5; }
+
+    public m(r, x) {
+        x = x + x;
+        return switch(r) {
+            case R(o) -> {
+                x = x + x;
+                yield f(o);
+            }
+        };
+    }
+}

resources/bytecode/javFiles/SwitchRecordList.jav

@@ -0,0 +1,27 @@
+import java.lang.Integer;
+import java.lang.Object;
+import java.lang.Float;
+import java.lang.String;
+
+sealed interface List permits LinkedElem, Elem {}
+
+
+public record LinkedElem(Integer a,List l) implements List{} //Implementiert List und wird auch permittet
+public record Elem(Integer c) implements List{} //Implementiert List, wird aber nicht permittet
+
+public class SwitchCaseHeritageDetection {
+    public main(o) {
+         return switch(o) {
+                case LinkedElem(a, Elem(e)) -> a + e;
+                case LinkedElem(a, LinkedElem(e, Elem(f))) -> a + e + f;
+                default -> 0;
+         };
+    }
+}
+
+
+
+
+
+
+

resources/bytecode/javFiles/While.jav

@@ -9,4 +9,13 @@ public class While {
 		}
 		return x;
 	}
+
+	public m2() {
+        int i = 0;
+        do {
+            ++i;
+        } while(i < 10);
+
+        return i;
+    }
 }

resources/bytecode/javFiles/Y.jav

@@ -2,41 +2,21 @@ import java.lang.Integer;
 
 public class Y {
     y;
-    //factorial;
-
     public Y() {
-		y =  f -> t -> f.apply(y.apply(f)).apply(t);
-		//factorial = y.apply(f -> n -> { if (n == 0) return 1; else return n * f.apply(n - 1); });
-    }
-  /*  
-    getY() {
-      return y;
-    }
-    */
-}
-/*
-class fac1 {
-    factorial;
-
-    fac1() {
-      var y;
-	  y = new Y<Integer,Integer,Integer,Integer,Integer>().getY();
-	  factorial = y.apply(f -> n -> { if (n == 0) return 1; else return n * f.apply(n - 1); });
+		y = f -> t -> f.apply(y.apply(f)).apply(t);
     }
 }
 
-ergibt Parse-Error
-class fac1 {
-    factorial;
-
-    fac1() {
+public class Fac1 {
+    public factorial;
+    public Fac1() {
     	var y;
-		y = new Y<>().y;
+    	var tmp = new Y<>(); // TODO Having new Y<>().y on one line doesn't work, see FIXME in StatementGenerator
+		y = tmp.y;
 		factorial = y.apply(f -> n -> { if (n == 0) return 1; else return n * f.apply(n - 1); });
     }
-     public static void main(String args[]) {
-		System.out.println(new fac1().factorial.apply(3));
+
+    public fac(v) {
+        return factorial.apply(v);
     }
- 
-}
-*/
+}

src/main/antlr4/de/dhbwstuttgart/parser/antlr/Java17Parser.g4

@@ -654,14 +654,17 @@ primaryPattern
     : typePattern  #tPattern
     | recordPattern  #rPattern
     | '(' pattern ')'  #enclosedPattern
+    | literal (',' literal)* #lPattern
     ;
 
 recordPattern
     : typeType recordStructurePattern identifier?
+    //| recordStructurePattern identifier?
     ;
 
 typePattern
     : variableModifier* typeType identifier
+    | variableModifier* identifier
     ;
 
 recordStructurePattern
@@ -717,10 +720,10 @@ switchLabeledRule
     ;
 
 switchLabelCase
-    : CASE expressionList (ARROW | COLON) #labeledRuleExprList
-    | CASE NULL_LITERAL (ARROW | COLON) #labeledRuleNull
+    : CASE NULL_LITERAL (ARROW | COLON) #labeledRuleNull
     | CASE pattern (ARROW | COLON) #labeledRulePattern
     | DEFAULT (ARROW | COLON) #labeledRuleDefault
+    | CASE expressionList (ARROW | COLON) #labeledRuleExprList
     ;
 
 // Java20

src/main/java/de/dhbwstuttgart/bytecode/Codegen.java

@@ -2,27 +2,27 @@ package de.dhbwstuttgart.bytecode;
 
 import de.dhbwstuttgart.core.JavaTXCompiler;
 import de.dhbwstuttgart.exceptions.NotImplementedException;
-import de.dhbwstuttgart.parser.NullToken;
 import de.dhbwstuttgart.parser.scope.JavaClassName;
 import de.dhbwstuttgart.syntaxtree.ClassOrInterface;
-import de.dhbwstuttgart.syntaxtree.type.RefType;
 import de.dhbwstuttgart.target.generate.ASTToTargetAST;
-import de.dhbwstuttgart.target.generate.StatementToTargetExpression;
 import de.dhbwstuttgart.target.tree.*;
 import de.dhbwstuttgart.target.tree.expression.*;
 import de.dhbwstuttgart.target.tree.type.*;
+import de.dhbwstuttgart.util.Logger;
 import org.objectweb.asm.*;
 
 import java.lang.invoke.*;
 import java.lang.reflect.Modifier;
 import java.util.*;
-import java.util.stream.IntStream;
+import java.util.stream.Collectors;
 
 import static org.objectweb.asm.Opcodes.*;
 import static de.dhbwstuttgart.target.tree.expression.TargetBinaryOp.*;
 import static de.dhbwstuttgart.target.tree.expression.TargetLiteral.*;
 
 public class Codegen {
+    public static Logger logger = new Logger("codegen");
+
     private final TargetStructure clazz;
     private final ClassWriter cw;
     public final String className;
@@ -31,15 +31,21 @@ public class Codegen {
     private final JavaTXCompiler compiler;
     private final ASTToTargetAST converter;
 
+    private class CustomClassWriter extends ClassWriter {
+        public CustomClassWriter() {
+            super(ClassWriter.COMPUTE_FRAMES | ClassWriter.COMPUTE_MAXS);
+        }
+
+        @Override
+        protected ClassLoader getClassLoader() {
+            return compiler.getClassLoader();
+        }
+    }
+
     public Codegen(TargetStructure clazz, JavaTXCompiler compiler, ASTToTargetAST converter) {
         this.clazz = clazz;
         this.className = clazz.qualifiedName().getClassName();
-        this.cw = new ClassWriter(ClassWriter.COMPUTE_FRAMES | ClassWriter.COMPUTE_MAXS) {
-            @Override
-            protected ClassLoader getClassLoader() {
-                return compiler.getClassLoader();
-            }
-        };
+        this.cw = new CustomClassWriter();
         this.compiler = compiler;
         this.converter = converter;
     }
@@ -82,16 +88,16 @@ public class Codegen {
         int localCounter;
         MethodVisitor mv;
         TargetType returnType;
-        // This is used to remember the type from lambda expressions
-        TargetType contextType;
+        boolean isStatic = false;
 
         Stack<BreakEnv> breakStack = new Stack<>();
         Stack<Integer> switchResultValue = new Stack<>();
 
-        State(TargetType returnType, MethodVisitor mv, int localCounter) {
+        State(TargetType returnType, MethodVisitor mv, int localCounter, boolean isStatic) {
             this.returnType = returnType;
             this.mv = mv;
             this.localCounter = localCounter;
+            this.isStatic = isStatic;
         }
 
         void enterScope() {
@@ -102,6 +108,10 @@ public class Codegen {
             this.scope = this.scope.parent;
         }
 
+        LocalVar createVariable(TargetType type) {
+            return createVariable("__var" + this.localCounter, type);
+        }
+
         LocalVar createVariable(String name, TargetType type) {
             var local = new LocalVar(localCounter, name, type);
             scope.add(local);
@@ -225,9 +235,9 @@ public class Codegen {
         if (source.equals(dest))
             return;
         if (source.equals(TargetType.Long)) {
-            if (dest.equals(TargetType.Integer)) {
+            if (dest.equals(TargetType.Integer))
                 mv.visitInsn(L2I);
-            } else if (dest.equals(TargetType.Float))
+            else if (dest.equals(TargetType.Float))
                 mv.visitInsn(L2F);
             else if (dest.equals(TargetType.Double))
                 mv.visitInsn(L2D);
@@ -270,13 +280,45 @@ public class Codegen {
                 mv.visitInsn(I2F);
             else if (dest.equals(TargetType.Double))
                 mv.visitInsn(I2D);
+        } else if (source.equals(TargetType.Boolean)) {
+            unboxPrimitive(state, dest);
+        } else if (isFunctionalInterface(source) && isFunctionalInterface(dest) &&
+                !(source instanceof TargetFunNType && dest instanceof TargetFunNType)) {
+            boxFunctionalInterface(state, source, dest);
         } else if (!(dest instanceof TargetGenericType)) {
-            boxPrimitive(state, source);
+            //boxPrimitive(state, source);
             mv.visitTypeInsn(CHECKCAST, dest.getInternalName());
             unboxPrimitive(state, dest);
         }
     }
 
+    record TypePair(TargetType from, TargetType to) {}
+    private Map<TypePair, String> funWrapperClasses = new HashMap<>();
+
+    private void boxFunctionalInterface(State state, TargetType source, TargetType dest) {
+        var mv = state.mv;
+        var className = "FunWrapper$$" +
+                source.name().replaceAll("\\.", "\\$") +
+                "$_$" +
+                dest.name().replaceAll("\\.", "\\$");
+
+        funWrapperClasses.put(new TypePair(source, dest), className);
+        mv.visitTypeInsn(NEW, className);
+        mv.visitInsn(DUP_X1);
+        mv.visitInsn(SWAP);
+        mv.visitMethodInsn(INVOKESPECIAL, className, "<init>", "(" + source.toDescriptor() + ")V", false);
+    }
+
+    private boolean isFunctionalInterface(TargetType type) {
+        if (type instanceof TargetFunNType) return true;
+        if (type instanceof TargetRefType) {
+            var clazz = compiler.getClass(new JavaClassName(type.name()));
+            return (clazz.getModifiers() & Modifier.INTERFACE) != 0 && clazz.isFunctionalInterface();
+        }
+
+        return false;
+    }
+
     private TargetType largerType(TargetType left, TargetType right) {
         if (left.equals(TargetType.String) || right.equals(TargetType.String)) {
             return TargetType.String;
@@ -723,44 +765,29 @@ public class Codegen {
         }
     }
 
+    private static TargetType removeGenerics(TargetType param) {
+        return switch (param) {
+            case null -> null;
+            case TargetFunNType funNType -> new TargetFunNType(funNType.name(), funNType.funNParams(), List.of(), funNType.returnArguments());
+            case TargetRefType refType -> new TargetRefType(refType.name());
+            case TargetGenericType targetGenericType -> TargetType.Object;
+            default -> param;
+        };
+    }
+
     private void generateLambdaExpression(State state, TargetLambdaExpression lambda) {
         var mv = state.mv;
 
         String methodName = "apply";
-        TargetMethod.Signature signature = null;
-
-        if (!(state.contextType instanceof TargetFunNType ctx)) {
-            var intf = compiler.getClass(new JavaClassName(state.contextType.name()));
-            if (intf != null) {
-                var method = intf.getMethods().stream().filter(m -> Modifier.isAbstract(m.modifier)).findFirst().orElseThrow();
-                methodName = method.getName();
-                var methodParams = new ArrayList<MethodParameter>();
-                for (var i = 0; i < lambda.signature().parameters().size(); i++) {
-                    var param = lambda.signature().parameters().get(i);
-                    var tpe = converter.convert(method.getParameterList().getParameterAt(i).getType());
-                    methodParams.add(param.withType(tpe));
-                }
-                var retType = converter.convert(method.getReturnType());
-                signature = new TargetMethod.Signature(Set.of(), methodParams, retType);
-            }
-        }
-        if (signature == null) {
-            signature = new TargetMethod.Signature(Set.of(), lambda.signature().parameters().stream().map(par -> par.withType(TargetType.Object)).toList(), TargetType.Object);
-        }
-
-        signature = new TargetMethod.Signature(
-            signature.generics(),
-            signature.parameters().stream().map(par ->
-                par.withType(par.pattern().type() instanceof TargetGenericType ? TargetType.Object : par.pattern().type())
-            ).toList(),
-            signature.returnType() instanceof TargetGenericType ? TargetType.Object : signature.returnType()
-        );
+        TargetMethod.Signature signature = new TargetMethod.Signature(Set.of(),
+                lambda.signature().parameters().stream().map(
+                        par -> par.withType(TargetType.Object)).toList(),
+                lambda.signature().returnType() != null ? TargetType.Object : null);
 
         var parameters = new ArrayList<>(lambda.captures());
         parameters.addAll(signature.parameters());
-        var implSignature = new TargetMethod.Signature(Set.of(), parameters, lambda.signature().returnType());
-
-        // Normalize
+        parameters = parameters.stream().map(param -> param.withType(removeGenerics(param.pattern().type()))).collect(Collectors.toCollection(ArrayList::new));
+        var implSignature = new TargetMethod.Signature(Set.of(), parameters, removeGenerics(lambda.signature().returnType()));
 
         TargetMethod impl;
         if (lambdas.containsKey(lambda)) {
@@ -768,22 +795,22 @@ public class Codegen {
         } else {
             var name = "lambda$" + lambdaCounter++;
 
-            impl = new TargetMethod(0, name, lambda.block(), implSignature, null);
-            generateMethod(impl);
+            impl = new TargetMethod(state.isStatic ? ACC_STATIC : 0, name, lambda.block(), implSignature, null);
+            generateMethod(impl, state);
             lambdas.put(lambda, impl);
         }
 
         var mt = MethodType.methodType(CallSite.class, MethodHandles.Lookup.class, String.class, MethodType.class, MethodType.class, MethodHandle.class, MethodType.class);
 
         var bootstrap = new Handle(H_INVOKESTATIC, "java/lang/invoke/LambdaMetafactory", "metafactory", mt.toMethodDescriptorString(), false);
-        var handle = new Handle(H_INVOKEVIRTUAL, clazz.getName(), impl.name(), implSignature.getDescriptor(), false);
+        var handle = new Handle(state.isStatic ? H_INVOKESTATIC : H_INVOKEVIRTUAL, clazz.getName(), impl.name(), implSignature.getDescriptor(), false);
 
         var params = new ArrayList<TargetType>();
-        params.add(new TargetRefType(clazz.qualifiedName().getClassName()));
+        if(!state.isStatic) params.add(new TargetRefType(clazz.qualifiedName().getClassName()));
         params.addAll(lambda.captures().stream().map(mp -> mp.pattern().type()).toList());
 
-        var descriptor = TargetMethod.getDescriptor(state.contextType, params.toArray(TargetType[]::new));
-        mv.visitVarInsn(ALOAD, 0);
+        if (!state.isStatic)
+            mv.visitVarInsn(ALOAD, 0);
         for (var index = 0; index < lambda.captures().size(); index++) {
             var capture = lambda.captures().get(index);
             var pattern = (TargetTypePattern) capture.pattern();
@@ -792,9 +819,42 @@ public class Codegen {
             mv.visitTypeInsn(CHECKCAST, capture.pattern().type().getInternalName());
         }
 
+        var descriptor = TargetMethod.getDescriptor(lambda.type(), params.toArray(TargetType[]::new));
         mv.visitInvokeDynamicInsn(methodName, descriptor, bootstrap, Type.getType(signature.getSignature()), handle, Type.getType(signature.getDescriptor()));
     }
 
+    private int findReturnCode(TargetType returnType) {
+        if (returnType.equals(TargetType.boolean_)
+                || returnType.equals(TargetType.char_)
+                || returnType.equals(TargetType.int_)
+                || returnType.equals(TargetType.short_)
+                || returnType.equals(TargetType.byte_))
+            return IRETURN;
+        else if (returnType.equals(TargetType.long_))
+            return LRETURN;
+        else if (returnType.equals(TargetType.float_))
+            return FRETURN;
+        else if (returnType.equals(TargetType.double_))
+            return DRETURN;
+        return ARETURN;
+    }
+
+    private int findLoadCode(TargetType loadType) {
+        if (loadType.equals(TargetType.boolean_)
+                || loadType.equals(TargetType.char_)
+                || loadType.equals(TargetType.int_)
+                || loadType.equals(TargetType.short_)
+                || loadType.equals(TargetType.byte_))
+            return ILOAD;
+        else if (loadType.equals(TargetType.long_))
+            return LLOAD;
+        else if (loadType.equals(TargetType.float_))
+            return FLOAD;
+        else if (loadType.equals(TargetType.double_))
+            return DLOAD;
+        return ALOAD;
+    }
+
     private void generate(State state, TargetExpression expr) {
         var mv = state.mv;
         switch (expr) {
@@ -819,10 +879,7 @@ public class Codegen {
             break;
         }
         case TargetCast cast:
-            var ctx = state.contextType;
-            state.contextType = cast.type();
             generate(state, cast.expr());
-            state.contextType = ctx;
             convertTo(state, cast.expr().type(), cast.type());
             break;
         case TargetInstanceOf instanceOf:
@@ -867,10 +924,7 @@ public class Codegen {
         case TargetAssign assign: {
             switch (assign.left()) {
                 case TargetLocalVar localVar -> {
-                    var ctype = state.contextType;
-                    state.contextType = localVar.type();
                     generate(state, assign.right());
-                    state.contextType = ctype;
 
                     convertTo(state, assign.right().type(), localVar.type());
                     boxPrimitive(state, localVar.type());
@@ -883,10 +937,7 @@ public class Codegen {
                     if (!(dot.left() instanceof TargetThis && dot.isStatic()))
                         generate(state, dot.left());
 
-                    var ctype = state.contextType;
-                    state.contextType = fieldType;
                     generate(state, assign.right());
-                    state.contextType = ctype;
 
                     convertTo(state, assign.right().type(), fieldType);
                     boxPrimitive(state, fieldType);
@@ -978,6 +1029,27 @@ public class Codegen {
             mv.visitLabel(end);
             break;
         }
+        case TargetDo _do: {
+            Label start = new Label();
+            Label end = new Label();
+            Label check = new Label();
+
+            var env = new BreakEnv();
+            env.startLabel = check;
+            env.endLabel = end;
+
+            mv.visitLabel(start);
+            state.breakStack.push(env);
+            generate(state, _do.body());
+            state.breakStack.pop();
+
+            mv.visitLabel(check);
+            generate(state, _do.cond());
+            mv.visitJumpInsn(IFEQ, end);
+            mv.visitJumpInsn(GOTO, start);
+            mv.visitLabel(end);
+            break;
+        }
         case TargetIf _if: {
             generate(state, _if.cond());
             Label _else = new Label();
@@ -995,29 +1067,12 @@ public class Codegen {
         case TargetReturn ret: {
             if (ret.expression() != null && state.returnType != null) {
                 if (state.returnType instanceof TargetPrimitiveType) {
-                    var ctype = state.contextType;
-                    state.contextType = state.returnType;
                     generate(state, ret.expression());
-                    state.contextType = ctype;
 
                     unboxPrimitive(state, state.returnType);
-                    if (state.returnType.equals(TargetType.boolean_)
-                        || state.returnType.equals(TargetType.char_)
-                        || state.returnType.equals(TargetType.int_)
-                        || state.returnType.equals(TargetType.short_)
-                        || state.returnType.equals(TargetType.byte_))
-                        mv.visitInsn(IRETURN);
-                    else if (state.returnType.equals(TargetType.long_))
-                        mv.visitInsn(LRETURN);
-                    else if (state.returnType.equals(TargetType.float_))
-                        mv.visitInsn(FRETURN);
-                    else if (state.returnType.equals(TargetType.double_))
-                        mv.visitInsn(DRETURN);
+                    mv.visitInsn(findReturnCode(state.returnType));
                 } else {
-                    var ctype = state.contextType;
-                    state.contextType = state.returnType;
                     generate(state, ret.expression());
-                    state.contextType = ctype;
                     boxPrimitive(state, ret.expression().type());
                     convertTo(state, ret.expression().type(), state.returnType);
                     mv.visitInsn(ARETURN);
@@ -1068,12 +1123,10 @@ public class Codegen {
             for (var i = 0; i < call.args().size(); i++) {
                 var e = call.args().get(i);
                 var arg = call.parameterTypes().get(i);
-                var ctype = state.contextType;
-                state.contextType = arg;
                 generate(state, e);
+                convertTo(state, e.type(), arg);
                 if (!(arg instanceof TargetPrimitiveType))
                     boxPrimitive(state, e.type());
-                state.contextType = ctype;
             }
             var descriptor = call.getDescriptor();
             if (call.owner() instanceof TargetFunNType) // Decay FunN
@@ -1259,8 +1312,7 @@ public class Codegen {
         state.enterScope();
         // This is the index to start the switch from
         mv.visitInsn(ICONST_0);
-        if (aSwitch.isExpression())
-            state.pushSwitch();
+        state.pushSwitch();
 
         // To be able to skip ahead to the next case
         var start = new Label();
@@ -1274,17 +1326,18 @@ public class Codegen {
         var mt = MethodType.methodType(CallSite.class, MethodHandles.Lookup.class, String.class, MethodType.class, Object[].class);
         var bootstrap = new Handle(H_INVOKESTATIC, "java/lang/runtime/SwitchBootstraps", "typeSwitch", mt.toMethodDescriptorString(), false);
 
-        var types = new ArrayList<Object>(aSwitch.cases().size());
+        var types = new ArrayList<>(aSwitch.cases().size());
         for (var cse : aSwitch.cases()) for (var label : cse.labels()) {
-            if (label instanceof TargetTypePattern || label instanceof TargetComplexPattern)
-                types.add(Type.getObjectType(label.type().getInternalName()));
-            else if (label instanceof TargetLiteral lit)
+            if (label instanceof TargetTypePattern || label instanceof TargetComplexPattern) {
+                if (label.type() instanceof TargetGenericType) types.add(Type.getType(Object.class));
+                else types.add(Type.getObjectType(label.type().getInternalName()));
+            } else if (label instanceof TargetLiteral lit) {
                 types.add(lit.value());
-            else if (label instanceof TargetGuard guard)
+            } else if (label instanceof TargetGuard guard) {
                 types.add(Type.getObjectType(guard.inner().type().getInternalName()));
-            // TODO Same here we need to evaluate constant;
-            else {
-                System.out.println(label);
+                // TODO Same here we need to evaluate constant;
+            } else {
+                logger.info(label);
                 throw new NotImplementedException();
             }
         }
@@ -1304,11 +1357,7 @@ public class Codegen {
             }
         }
 
-        var defaultLabel = end;
-        if (aSwitch.default_() != null) {
-            defaultLabel = new Label();
-        }
-
+        var defaultLabel = new Label();
         mv.visitTableSwitchInsn(0, labels.length - 1, defaultLabel, labels);
 
         for (var i = 0; i < aSwitch.cases().size(); i++) {
@@ -1343,11 +1392,18 @@ public class Codegen {
             if (aSwitch.isExpression()) mv.visitJumpInsn(GOTO, end);
         }
 
+        mv.visitLabel(defaultLabel);
         if (aSwitch.default_() != null) {
-            mv.visitLabel(defaultLabel);
             generate(state, aSwitch.default_().body());
             if (aSwitch.default_().isSingleExpression() && aSwitch.isExpression())
                 yieldValue(state, aSwitch.default_().body().statements().get(0).type());
+        } else {
+            // throw illegal argument exception on missing default case
+            mv.visitTypeInsn(NEW, "java/lang/IllegalArgumentException");
+            mv.visitInsn(DUP);
+            mv.visitLdcInsn("Unhandled case value");
+            mv.visitMethodInsn(INVOKESPECIAL, "java/lang/IllegalArgumentException", "<init>", "(Ljava/lang/String;)V", false);
+            mv.visitInsn(ATHROW);
         }
 
         mv.visitLabel(end);
@@ -1355,8 +1411,10 @@ public class Codegen {
 
         state.breakStack.pop();
         if (aSwitch.isExpression()) {
-            mv.visitVarInsn(ALOAD, state.switchResultValue.peek());
-            unboxPrimitive(state, aSwitch.type());
+            if (aSwitch.type() != null) {
+                mv.visitVarInsn(ALOAD, state.switchResultValue.peek());
+                unboxPrimitive(state, aSwitch.type());
+            }
             state.popSwitch();
         }
 
@@ -1367,30 +1425,50 @@ public class Codegen {
         if (i >= clazz.getFieldDecl().size())
             throw new CodeGenException("Couldn't find suitable field accessor for '" + type.name() + "'");
         var field = clazz.getFieldDecl().get(i);
-        var fieldType = new TargetRefType(((RefType) field.getType()).getName().toString());
-        state.mv.visitMethodInsn(INVOKEVIRTUAL, type.getInternalName(), field.getName(), "()" + fieldType.toDescriptor(), false);
+        var fieldType = converter.convert(field.getType());
+        state.mv.visitMethodInsn(INVOKEVIRTUAL, type.getInternalName(), field.getName(), "()" + fieldType.toSignature(), false);
     }
 
     private void bindPattern(State state, TargetType type, TargetPattern pat, Label start, int index, int depth) {
         if (pat.type() instanceof TargetPrimitiveType)
             boxPrimitive(state, pat.type());
 
-        state.mv.visitInsn(DUP);
-        state.mv.visitTypeInsn(INSTANCEOF, pat.type().getInternalName());
+        if (pat.type() instanceof TargetRefType) {
+            state.mv.visitInsn(DUP);
+            state.mv.visitTypeInsn(INSTANCEOF, pat.type().getInternalName());
 
-        var cont = new Label();
-        state.mv.visitJumpInsn(IFNE, cont);
-        for (var i = 0; i < depth; i++) {
-            state.mv.visitInsn(POP);
+            var cont = new Label();
+            state.mv.visitJumpInsn(IFNE, cont);
+            for (var i = 0; i < depth; i++) {
+                state.mv.visitInsn(POP);
+            }
+
+            state.mv.visitVarInsn(ALOAD, state.switchResultValue.peek());
+            state.mv.visitLdcInsn(index + 1);
+            state.mv.visitJumpInsn(GOTO, start);
+            state.mv.visitLabel(cont);
+
+            state.mv.visitTypeInsn(CHECKCAST, pat.type().getInternalName());
         }
-        state.mv.visitVarInsn(ALOAD, state.switchResultValue.peek());
-        state.mv.visitLdcInsn(index + 1);
-        state.mv.visitJumpInsn(GOTO, start);
-        state.mv.visitLabel(cont);
 
-        state.mv.visitTypeInsn(CHECKCAST, pat.type().getInternalName());
+        if (pat instanceof TargetExpressionPattern ep) {
+            var cur = state.createVariable(pat.type());
+            state.mv.visitVarInsn(ASTORE, cur.index);
 
-        if (pat instanceof TargetTypePattern sp) {
+            var expr = new Equal(pat.type(), new TargetLocalVar(cur.type, cur.name), ep.expression());
+            generate(state, expr);
+
+            var cont = new Label();
+            state.mv.visitJumpInsn(IFNE, cont);
+            for (var i = 0; i < depth - 1; i++) {
+                state.mv.visitInsn(POP);
+            }
+
+            state.mv.visitVarInsn(ALOAD, state.switchResultValue.peek());
+            state.mv.visitLdcInsn(index + 1);
+            state.mv.visitJumpInsn(GOTO, start);
+            state.mv.visitLabel(cont);
+        } else if (pat instanceof TargetTypePattern sp) {
             var local = state.createVariable(sp.name(), sp.type());
             state.mv.visitVarInsn(ASTORE, local.index);
         } else if (pat instanceof TargetComplexPattern cp) {
@@ -1405,10 +1483,27 @@ public class Codegen {
             // TODO Check if class is a Record
 
             for (var i = 0; i < cp.subPatterns().size(); i++) {
-                state.mv.visitInsn(DUP);
-
                 var subPattern = cp.subPatterns().get(i);
+
+                state.mv.visitInsn(DUP);
                 extractField(state, cp.type(), i, clazz);
+
+                if (subPattern.type() instanceof TargetRefType || subPattern.type() instanceof TargetExtendsWildcard) {
+                    state.mv.visitInsn(DUP);
+                    state.mv.visitTypeInsn(INSTANCEOF, subPattern.type().getInternalName());
+
+                    var cont = new Label();
+                    state.mv.visitJumpInsn(IFNE, cont);
+                    for (var j = 0; j < depth + 1; j++) {
+                        state.mv.visitInsn(POP);
+                    }
+
+                    state.mv.visitVarInsn(ALOAD, state.switchResultValue.peek());
+                    state.mv.visitLdcInsn(index + 1);
+                    state.mv.visitJumpInsn(GOTO, start);
+                    state.mv.visitLabel(cont);
+                }
+
                 bindPattern(state, subPattern.type(), subPattern, start, index, depth + 1);
             }
             state.mv.visitInsn(POP);
@@ -1443,7 +1538,7 @@ public class Codegen {
         MethodVisitor mv = cw.visitMethod(ACC_PUBLIC | ACC_STATIC, "<clinit>", "()V", null, null);
         mv.visitCode();
 
-        var state = new State(null, mv, 0);
+        var state = new State(null, mv, 0, true);
         generate(state, constructor.block());
 
         mv.visitInsn(RETURN);
@@ -1457,7 +1552,7 @@ public class Codegen {
             mv.visitAttribute(new JavaTXSignatureAttribute(constructor.getTXSignature()));
         
         mv.visitCode();
-        var state = new State(null, mv, 1);
+        var state = new State(null, mv, 1, false);
         for (var param : constructor.parameters()) {
             var pattern = param.pattern();
             if (pattern instanceof TargetTypePattern tp)
@@ -1481,33 +1576,53 @@ public class Codegen {
         mv.visitEnd();
     }
 
-    private int bindLocalVariables(State state, TargetPattern pattern, int offset, int field) {
-        if (pattern instanceof TargetComplexPattern cp) {
-            state.mv.visitVarInsn(ALOAD, offset);
+    private void bindLocalVariables(State state, TargetComplexPattern cp, int offset) {
+        state.mv.visitVarInsn(ALOAD, offset);
 
-            var clazz = findClass(new JavaClassName(cp.type().name()));
-            if (clazz == null) throw new CodeGenException("Class definition for '" + cp.type().name() + "' not found");
+        var clazz = findClass(new JavaClassName(cp.type().name()));
+        if (clazz == null) throw new CodeGenException("Class definition for '" + cp.type().name() + "' not found");
 
-            for (var i = 0; i < cp.subPatterns().size(); i++) {
-                var subPattern = cp.subPatterns().get(i);
+        for (var i = 0; i < cp.subPatterns().size(); i++) {
+            var subPattern = cp.subPatterns().get(i);
 
-                if (i < cp.subPatterns().size() - 1)
-                    state.mv.visitInsn(DUP);
+            if (i < cp.subPatterns().size() - 1)
+                state.mv.visitInsn(DUP);
 
-                extractField(state, cp.type(), i, clazz);
+            extractField(state, cp.type(), i, clazz);
+            if (subPattern.type() instanceof TargetRefType)
                 state.mv.visitTypeInsn(CHECKCAST, subPattern.type().getInternalName());
-                state.mv.visitVarInsn(ASTORE, offset);
-                offset = bindLocalVariables(state, subPattern, offset, i);
+            offset = state.createVariable(subPattern.name(), subPattern.type()).index;
+            state.mv.visitVarInsn(ASTORE, offset);
+            if (subPattern instanceof TargetComplexPattern cp2) {
+                bindLocalVariables(state, cp2, offset);
             }
-        } else if (pattern instanceof TargetTypePattern tp) {
-            offset++;
-            state.createVariable(tp.name(), tp.type());
-        } else throw new NotImplementedException();
-        return offset;
+        }
+    }
+    private void generateMethod(TargetMethod method) {
+        generateMethod(method, null);
     }
 
-    private void generateMethod(TargetMethod method) {
+    private void generateMainMethod() {
+        var mv = cw.visitMethod(ACC_PUBLIC | ACC_STATIC, "main", "([Ljava/lang/String;)V", null, null);
+        mv.visitCode();
+        mv.visitVarInsn(ALOAD, 0);
+        mv.visitMethodInsn(INVOKESTATIC, "java/util/List", "of", "([Ljava/lang/Object;)Ljava/util/List;", true);
+        mv.visitMethodInsn(INVOKESTATIC, className, "main", "(Ljava/util/List;)V", false);
+        mv.visitInsn(RETURN);
+        mv.visitMaxs(0, 0);
+        mv.visitEnd();
+    }
+
+    private void generateMethod(TargetMethod method, State parent) {
         var access = method.access();
+
+        var params = method.signature().parameters();
+        if (method.name().equals("main") && method.isStatic() && params.size() == 1 &&
+            params.getFirst().pattern().type().equals(new TargetRefType("java.util.List", List.of(new TargetRefType("java.lang.String"))))) {
+
+            generateMainMethod();
+        }
+
         if (method.block() == null)
             access |= ACC_ABSTRACT;
         if (clazz instanceof TargetInterface)
@@ -1521,10 +1636,21 @@ public class Codegen {
 
         if (method.block() != null) {
             mv.visitCode();
-            var state = new State(method.signature().returnType(), mv, method.isStatic() ? 0 : 1);
-            for (var param : method.signature().parameters()) {
-                bindLocalVariables(state, param.pattern(), 1, 0);
+            var state = new State(method.signature().returnType(), mv, method.isStatic() ? 0 : 1, method.isStatic());
+            if (parent != null) {
+                state.scope.parent = parent.scope;
             }
+            var offset = 1;
+            for (var param : method.signature().parameters()) {
+                state.createVariable(param.pattern().name(), param.pattern().type());
+            }
+            for (var param : method.signature().parameters()) {
+                if (param.pattern() instanceof TargetComplexPattern cp)
+                    bindLocalVariables(state, cp, offset);
+                offset++;
+            }
+            //if (parent != null) System.out.println("parent: " + parent.scope.locals.keySet());
+            //System.out.println(state.scope.locals.keySet());
             generate(state, method.block());
             if (method.signature().returnType() == null)
                 mv.visitInsn(RETURN);
@@ -1558,13 +1684,26 @@ public class Codegen {
         if (!(clazz instanceof TargetInterface))
             access |= ACC_SUPER;
 
+        // Check sealed
+        for (var intf : clazz.implementingInterfaces()) {
+            var intfClass = compiler.getClass(new JavaClassName(intf.name()));
+            if (intfClass.isSealed()) {
+                if (intfClass.getPermittedSubtypes().stream().noneMatch(type -> type.getName().equals(new JavaClassName(className)))) {
+                    throw new CodeGenException("Sealed interface " + intfClass.getClassName() + " doesn't permit class " + className);
+                }
+            }
+        }
+
         var signature = generateSignature(clazz, clazz.generics());
         var interfaces = clazz.implementingInterfaces().stream().map(TargetType::getInternalName).toArray(String[]::new);
         var superType = clazz.superType() != null ? clazz.superType().getInternalName() : "java/lang/Object";
 
         cw.visit(V1_8, access, clazz.qualifiedName().toString().replaceAll("\\.", "/"), signature, superType, interfaces);
-        if (clazz.txGenerics() != null && signature != null)
-            cw.visitAttribute(new JavaTXSignatureAttribute(generateSignature(clazz, clazz.txGenerics())));
+        if (clazz.txGenerics() != null && signature != null) {
+            var txSignature = generateSignature(clazz, clazz.txGenerics());
+            if (txSignature != null)
+                cw.visitAttribute(new JavaTXSignatureAttribute(txSignature));
+        }
 
         clazz.fields().forEach(this::generateField);
         clazz.constructors().forEach(this::generateConstructor);
@@ -1576,6 +1715,85 @@ public class Codegen {
         if (clazz instanceof TargetRecord)
             generateRecordMethods();
 
+        // Generate wrapper classes for function types
+        for (var pair : funWrapperClasses.keySet()) {
+            var className = funWrapperClasses.get(pair);
+            ClassWriter cw2 = new CustomClassWriter();
+            cw2.visit(V1_8, ACC_PUBLIC, className, null, "java/lang/Object", new String[] { pair.to.getInternalName() });
+            cw2.visitField(ACC_PRIVATE, "wrapped", pair.from.toDescriptor(), null, null).visitEnd();
+
+            // Generate constructor
+            var ctor = cw2.visitMethod(ACC_PUBLIC, "<init>", "(" + pair.from.toDescriptor() + ")V", null, null);
+            ctor.visitVarInsn(ALOAD, 0);
+            ctor.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V", false);
+            ctor.visitVarInsn(ALOAD, 0);
+            ctor.visitVarInsn(ALOAD, 1);
+            ctor.visitFieldInsn(PUTFIELD, className, "wrapped", pair.from.toDescriptor());
+            ctor.visitInsn(RETURN);
+            ctor.visitMaxs(0, 0);
+            ctor.visitEnd();
+
+            String methodName = "apply";
+            String fromDescriptor = null;
+            TargetType fromReturn = null;
+            if (!(pair.from instanceof TargetFunNType funNType)) {
+                var fromClass = compiler.getClass(new JavaClassName(pair.from.name()));
+                var fromMethod = fromClass.getMethods().stream().filter(m -> (m.modifier & ACC_ABSTRACT) != 0).findFirst().orElseThrow();
+                methodName = fromMethod.name;
+
+                fromReturn = converter.convert(fromMethod.getReturnType());
+                var fromParams = converter.convert(fromMethod.getParameterList(), converter.generics.javaGenerics()).stream().map(m -> m.pattern().type()).toArray(TargetType[]::new);
+                fromDescriptor = TargetMethod.getDescriptor(fromReturn, fromParams);
+            } else {
+                fromReturn = funNType.returnArguments() > 0 ? TargetType.Object : null;
+                fromDescriptor = funNType.toMethodDescriptor();
+            }
+
+            var toClass = compiler.getClass(new JavaClassName(pair.to.name()));
+            var toMethod = toClass.getMethods().stream().filter(m -> (m.modifier & ACC_ABSTRACT) != 0).findFirst().orElseThrow();
+            var toReturn = converter.convert(toMethod.getReturnType());
+            var toParams = converter.convert(toMethod.getParameterList(), converter.generics.javaGenerics()).stream().map(m -> m.pattern().type()).toArray(TargetType[]::new);
+            var toDescriptor = TargetMethod.getDescriptor(toReturn, toParams);
+
+            // Generate wrapper method
+            var mv = cw2.visitMethod(ACC_PUBLIC, toMethod.name, toDescriptor, null, null);
+            var state = new State(null, mv, 0, false);
+
+            mv.visitVarInsn(ALOAD, 0);
+            mv.visitFieldInsn(GETFIELD, className, "wrapped", pair.from.toDescriptor());
+            for (var i = 0; i < toParams.length; i++) {
+                var arg = toParams[i];
+                mv.visitVarInsn(findLoadCode(arg), i + 1);
+            }
+            mv.visitMethodInsn(INVOKEINTERFACE, pair.from.getInternalName(), methodName, fromDescriptor, true);
+            if (fromReturn != null) {
+                if (toReturn instanceof TargetPrimitiveType) {
+                    convertTo(state, fromReturn, TargetType.toWrapper(toReturn));
+                } else convertTo(state, fromReturn, toReturn);
+            }
+
+            if (toReturn != null)
+                mv.visitInsn(findReturnCode(toReturn));
+
+            else mv.visitInsn(RETURN);
+            mv.visitMaxs(0, 0);
+            mv.visitEnd();
+
+            cw2.visitEnd();
+            var bytes = cw2.toByteArray();
+            converter.auxiliaries.put(className, bytes);
+
+            // TODO These class loading shenanigans happen in a few places, the tests load the classes individually.
+            // Instead we should just look at the folder.
+            try {
+                converter.classLoader.findClass(className);
+            } catch (ClassNotFoundException e) {
+                try {
+                    converter.classLoader.loadClass(className, bytes);
+                } catch (LinkageError ignored) {}
+            }
+        }
+
         cw.visitEnd();
         return cw.toByteArray();
     }
@@ -1606,7 +1824,7 @@ public class Codegen {
         bootstrapArgs[1] = String.join(";", clazz.fields().stream().map(TargetField::name).toArray(String[]::new));
         for (var i = 0; i < clazz.fields().size(); i++) {
             var field = clazz.fields().get(i);
-            var fieldRef = new Handle(H_GETFIELD, clazz.getName(), field.name(), field.type().toDescriptor(), false);
+            var fieldRef = new Handle(H_GETFIELD, clazz.getName(), field.name(), field.type().toSignature(), false);
             bootstrapArgs[i + 2] = fieldRef;
         }
 

src/main/java/de/dhbwstuttgart/bytecode/FunNGenerator.java

@@ -1,11 +1,13 @@
 package de.dhbwstuttgart.bytecode;
 
+import de.dhbwstuttgart.syntaxtree.statement.Break;
 import de.dhbwstuttgart.target.tree.TargetGeneric;
 import de.dhbwstuttgart.target.tree.type.*;
 import org.objectweb.asm.ClassWriter;
 import org.objectweb.asm.MethodVisitor;
 import org.objectweb.asm.Type;
 
+import java.sql.Array;
 import java.util.*;
 import java.util.stream.Collectors;
 import java.util.stream.Stream;
@@ -33,6 +35,40 @@ public class FunNGenerator {
     public static class GenericParameters {
         int start;
         public List<TargetType> parameters = new ArrayList<>();
+        final String descriptor;
+        public final List<TargetType> inParams;
+        public final List<TargetType> realParams;
+
+        public GenericParameters(TargetFunNType funNType) {
+            this(funNType.funNParams(), funNType.returnArguments());
+        }
+
+        public GenericParameters(List<TargetType> params, int numReturns) {
+            this.realParams = params;
+            this.inParams = flattenTypeParams(params);
+            var type = new TargetRefType(FunNGenerator.getSuperClassName(params.size() - 1, numReturns), params);
+            descriptor = applyDescriptor(type, this);
+        }
+
+        private static List<TargetType> flattenTypeParams(List<TargetType> params) {
+            var res = new ArrayList<TargetType>();
+            for (var param : params) {
+                if (param instanceof TargetSpecializedType tspec) {
+                    res.addAll(flattenTypeParams(tspec.params()));
+                } else {
+                    res.add(param);
+                }
+            }
+            return res;
+        }
+
+        public TargetType getReturnType() {
+            return FunNGenerator.getReturnType(realParams);
+        }
+
+        public List<TargetType> getArguments() {
+            return FunNGenerator.getArguments(realParams);
+        }
     }
 
     private static String applyDescriptor(TargetType type, GenericParameters gep) {
@@ -69,7 +105,7 @@ public class FunNGenerator {
         return applyNameDescriptor(type).replace("/", "$").replace(";", "$_$");
     }
 
-    public static byte[] generateSuperBytecode(int numberArguments) {
+    public static byte[] generateSuperBytecode(int numberArguments, int numReturnTypes) {
         StringBuilder superFunNClassSignature = new StringBuilder("<");
         StringBuilder superFunNMethodSignature = new StringBuilder("(");
         StringBuilder superFunNMethodDescriptor = new StringBuilder("(");
@@ -80,30 +116,34 @@ public class FunNGenerator {
             superFunNMethodDescriptor.append(objectSignature);
         }
         superFunNClassSignature.append(String.format("%s:%s>%s", returnGeneric, objectSignature, objectSignature));
-        superFunNMethodSignature.append(String.format(")T%s;", returnGeneric));
-        superFunNMethodDescriptor.append(String.format(")%s", objectSignature));
+        if (numReturnTypes > 0) {
+            superFunNMethodSignature.append(String.format(")T%s;", returnGeneric));
+            superFunNMethodDescriptor.append(String.format(")%s", objectSignature));
+        } else {
+            superFunNMethodSignature.append(")V");
+            superFunNMethodDescriptor.append(")V");
+        }
 
-        System.out.println(superFunNMethodSignature);
+        Codegen.logger.info(superFunNMethodSignature);
 
         ClassWriter classWriter = new ClassWriter(0);
         MethodVisitor methodVisitor;
-        classWriter.visit(bytecodeVersion, ACC_PUBLIC | ACC_ABSTRACT | ACC_INTERFACE, getSuperClassName(numberArguments), superFunNClassSignature.toString(), objectSuperType, null);
+        classWriter.visit(bytecodeVersion, ACC_PUBLIC | ACC_ABSTRACT | ACC_INTERFACE, getSuperClassName(numberArguments, numReturnTypes), superFunNClassSignature.toString(), objectSuperType, null);
         methodVisitor = classWriter.visitMethod(ACC_PUBLIC | ACC_ABSTRACT, methodName, superFunNMethodDescriptor.toString(), superFunNMethodSignature.toString(), null);
         methodVisitor.visitEnd();
         classWriter.visitEnd();
         return classWriter.toByteArray();
     }
 
-    public static String getSuperClassName(int numberArguments) {
-        return String.format("Fun%d$$", numberArguments);
+    public static String getSuperClassName(int numberArguments, int returnArguments) {
+        return returnArguments > 0 ? String.format("Fun%d$$", numberArguments) : String.format("FunVoid%d$$", numberArguments);
     }
 
-    public static byte[] generateSpecializedBytecode(List<TargetType> argumentTypes, TargetType returnType, GenericParameters gep) {
-        List<TargetType> parameters = Stream
-                .concat(argumentTypes.stream(), Stream.of(returnType))
-                .toList();
+    public static byte[] generateSpecializedBytecode(GenericParameters gep, List<String> superInterfaces) {
+        var argumentTypes = gep.getArguments();
+        var returnType = gep.getReturnType();
 
-        StringBuilder funNClassSignature = new StringBuilder(objectSignature + applyDescriptor(new TargetRefType(getSuperClassName(argumentTypes.size()), parameters), gep));
+        StringBuilder funNClassSignature = new StringBuilder(objectSignature + gep.descriptor);
         boolean containsGeneric = false;
 
         String genericSignature = "<";
@@ -114,10 +154,18 @@ public class FunNGenerator {
 
         genericSignature += ">";
         if (containsGeneric) funNClassSignature.insert(0, genericSignature);
-        System.out.println(funNClassSignature.toString());
+
+        for (var superInterface : superInterfaces) {
+            funNClassSignature.append('L');
+            funNClassSignature.append(superInterface);
+            funNClassSignature.append(';');
+        }
+
+        var interfaces = new ArrayList<>(superInterfaces);
+        interfaces.add(getSuperClassName(argumentTypes.size(), returnType != null ? 1 : 0));
 
         ClassWriter classWriter = new ClassWriter(0);
-        classWriter.visit(bytecodeVersion, ACC_PUBLIC | ACC_ABSTRACT | ACC_INTERFACE, getSpecializedClassName(argumentTypes, returnType), funNClassSignature.toString(), objectSuperType, new String[]{getSuperClassName(argumentTypes.size())});
+        classWriter.visit(bytecodeVersion, ACC_PUBLIC | ACC_ABSTRACT | ACC_INTERFACE, getSpecializedClassName(argumentTypes, returnType), funNClassSignature.toString(), objectSuperType, interfaces.toArray(String[]::new));
         classWriter.visitEnd();
         return classWriter.toByteArray();
     }
@@ -133,14 +181,24 @@ public class FunNGenerator {
         }
     }
 
+    public static String getSpecializedClassName(GenericParameters gep) {
+        return getSpecializedClassName(gep.getArguments(), gep.getReturnType());
+    }
+
     public static String getSpecializedClassName(List<TargetType> argumentTypes, TargetType returnType) {
-        return String.format("Fun%d$$%s%s",
+        var arguments = argumentTypes
+            .stream()
+            .map(FunNGenerator::encodeType)
+            .collect(Collectors.joining());
+
+        if (returnType != null)
+            return String.format("Fun%d$$%s%s",
+                argumentTypes.size(),
+                arguments,
+                encodeType(returnType));
+        else return String.format("FunVoidImpl%d$$%s",
             argumentTypes.size(),
-            argumentTypes
-                    .stream()
-                    .map(FunNGenerator::encodeType)
-                    .collect(Collectors.joining()),
-            encodeType(returnType));
+            arguments);
     }
 
     public static List<TargetType> getArguments(List<TargetType> list) {
@@ -151,8 +209,8 @@ public class FunNGenerator {
     }
 
     public static TargetType getReturnType(List<TargetType> list) {
-        if(list.size() == 0)
+        if(list.isEmpty())
             throw new IndexOutOfBoundsException();
-        return list.get(list.size() - 1);
+        return list.getLast();
     }
 }

src/main/java/de/dhbwstuttgart/core/ConsoleInterface.java

@@ -1,46 +1,81 @@
 package de.dhbwstuttgart.core;
 
+import de.dhbwstuttgart.server.SocketClient;
+import de.dhbwstuttgart.util.Logger;
 import java.io.File;
 import java.io.IOException;
-import java.io.OutputStream;
-import java.io.PrintStream;
 import java.util.*;
-public class ConsoleInterface {
-	private static final String directory = System.getProperty("user.dir");
 
-	public static void main(String[] args) throws IOException, ClassNotFoundException {
-		List<File> input = new ArrayList<>();
-		List<File> classpath = new ArrayList<>();
-        String outputPath = null;
-		Iterator<String> it = Arrays.asList(args).iterator();
-        if(args.length == 0){
-            System.out.println("No input files given. Get help with --help");
-            System.exit(1);
-        }else if(args.length == 1 && args[0].equals("--help")){
-            System.out.println("Usage: javatx [OPTION]... [FILE]...\n" +
-                    "\t-cp\tSet Classpath\n" +
-                    "\t-d\tSet destination directory");
-            System.exit(1);
+public class ConsoleInterface {
+
+  /**
+   * Leave the argument configurations here for the rest of the code to read
+   */
+  public static Logger.LogLevel logLevel = Logger.LogLevel.ERROR;
+  public static boolean writeLogFiles = false;
+  public static Optional<String> unifyServerUrl = Optional.empty();
+
+  public static void main(String[] args) throws IOException, ClassNotFoundException {
+    List<File> input = new ArrayList<>();
+    List<File> classpath = new ArrayList<>();
+    String outputPath = null;
+    Iterator<String> it = Arrays.asList(args).iterator();
+    Optional<Integer> serverPort = Optional.empty();
+
+    if (args.length == 0) {
+      System.out.println("No input files given. Get help with --help");
+      System.exit(1);
+    } else if (args.length == 1 && args[0].equals("--help")) {
+      System.out.println("Usage: javatx [OPTION]... [FILE]...\n" +
+        "\t-cp\tSet Classpath\n" +
+        "\t-d\tSet destination directory\n" +
+        "\t[--server-mode <port>]\n" +
+        "\t[--unify-server <url>]\n" +
+        "\t[--write-logs]\n" +
+        "\t[-v|-vv-|-vvv]");
+      System.exit(1);
+    }
+    while (it.hasNext()) {
+      String arg = it.next();
+      if (arg.equals("-d")) {
+        outputPath = it.next();
+      } else if (arg.startsWith("-d")) {
+        outputPath = arg.substring(2);
+      } else if (arg.equals("-cp") || arg.equals("-classpath")) {
+        String[] cps = it.next().split(":");
+        for (String cp : cps) {
+          classpath.add(new File(cp));
         }
-		while(it.hasNext()){
-            String arg = it.next();
-            if(arg.equals("-d")){
-                outputPath = it.next();
-            }else if(arg.startsWith("-d")) {
-                outputPath = arg.substring(2);
-            }else if(arg.equals("-cp") || arg.equals("-classpath")){
-                String[] cps = it.next().split(":");
-                for(String cp : cps){
-                    classpath.add(new File(cp));
-                }
-            }else{
-                input.add(new File(arg));
-            }
-        }
-		JavaTXCompiler compiler = new JavaTXCompiler(input, classpath, outputPath != null ? new File(outputPath) : null);
-		//compiler.typeInference();
-		compiler.generateBytecode();
-	}
+      } else if (arg.equals("--server-mode")) {
+        serverPort = Optional.of(Integer.parseInt(it.next()));
+      } else if (arg.equals("--unify-server")) {
+        unifyServerUrl = Optional.of(it.next());
+      } else if (arg.equals("--write-logs")) {
+        ConsoleInterface.writeLogFiles = true;
+      } else if (arg.startsWith("-v")) {
+        logLevel = switch (arg) {
+          case "-v" -> Logger.LogLevel.WARNING;
+          case "-vv" -> Logger.LogLevel.INFO;
+          case "-vvv" -> Logger.LogLevel.DEBUG;
+          default -> throw new IllegalArgumentException("Argument " + arg + " is not a valid verbosity level");
+        };
+      } else {
+        input.add(new File(arg));
+      }
+    }
+
+    if (serverPort.isPresent()) {
+      if (unifyServerUrl.isPresent()) throw new RuntimeException("Cannot use unifyServer when in server mode!");
+      JavaTXServer server = new JavaTXServer(serverPort.get());
+      server.listen();
+    }
+    else {
+      JavaTXCompiler compiler = new JavaTXCompiler(input, classpath, outputPath != null ? new File(outputPath) : null);
+      //compiler.typeInference();
+      compiler.generateBytecode();
+      SocketClient.closeIfOpen();
+    }
+  }
 
 
 }

src/main/java/de/dhbwstuttgart/core/JavaTXCompiler.java

@@ -12,6 +12,11 @@ import de.dhbwstuttgart.parser.SyntaxTreeGenerator.SyntaxTreeGenerator;
 import de.dhbwstuttgart.parser.antlr.Java17Parser.SourceFileContext;
 import de.dhbwstuttgart.parser.scope.JavaClassName;
 import de.dhbwstuttgart.parser.scope.JavaClassRegistry;
+import de.dhbwstuttgart.server.SocketClient;
+import de.dhbwstuttgart.server.SocketFuture;
+import de.dhbwstuttgart.server.packet.SetAutoclosePacket;
+import de.dhbwstuttgart.server.packet.UnifyRequestPacket;
+import de.dhbwstuttgart.server.packet.UnifyResultPacket;
 import de.dhbwstuttgart.syntaxtree.ClassOrInterface;
 import de.dhbwstuttgart.syntaxtree.GenericTypeVar;
 import de.dhbwstuttgart.syntaxtree.Method;
@@ -35,10 +40,13 @@ import de.dhbwstuttgart.typeinference.constraints.ConstraintSet;
 import de.dhbwstuttgart.typeinference.constraints.Pair;
 import de.dhbwstuttgart.typeinference.result.ResultSet;
 import de.dhbwstuttgart.typeinference.typeAlgo.TYPE;
+import de.dhbwstuttgart.typeinference.unify.PlaceholderRegistry;
 import de.dhbwstuttgart.typeinference.unify.RuleSet;
 import de.dhbwstuttgart.typeinference.unify.TypeUnify;
+import de.dhbwstuttgart.typeinference.unify.UnifyContext;
 import de.dhbwstuttgart.typeinference.unify.distributeVariance;
 import de.dhbwstuttgart.typeinference.unify.interfaces.IFiniteClosure;
+import de.dhbwstuttgart.typeinference.unify.model.FiniteClosure;
 import de.dhbwstuttgart.typeinference.unify.model.PairOperator;
 import de.dhbwstuttgart.typeinference.unify.model.PlaceholderType;
 import de.dhbwstuttgart.typeinference.unify.model.UnifyPair;
@@ -49,6 +57,7 @@ import de.dhbwstuttgart.typeinference.unify.UnifyResultListenerImpl;
 import de.dhbwstuttgart.typeinference.unify.UnifyResultModel;
 import de.dhbwstuttgart.typeinference.unify.UnifyTaskModel;
 
+import de.dhbwstuttgart.util.Logger;
 import java.io.*;
 import java.lang.reflect.Modifier;
 import java.nio.file.Path;
@@ -61,14 +70,17 @@ import org.apache.commons.io.output.NullOutputStream;
 
 public class JavaTXCompiler {
 
+	// do not use this in any code, that can be executed serverside!
+	public static PlaceholderRegistry defaultClientPlaceholderRegistry = new PlaceholderRegistry();
+	public static Logger defaultLogger = new Logger();
+
 	// public static JavaTXCompiler INSTANCE;
 	final CompilationEnvironment environment;
 	Boolean resultmodel = true;
-    public final Map<File, SourceFile> sourceFiles = new HashMap<>();
+	public final Map<File, SourceFile> sourceFiles = new HashMap<>();
 
-    Boolean log = true; //gibt an ob ein Log-File nach System.getProperty("user.dir")+""/logFiles/"" geschrieben werden soll?
-    public volatile UnifyTaskModel usedTasks = new UnifyTaskModel();
-    public final DirectoryClassLoader classLoader;
+	public volatile UnifyTaskModel usedTasks = new UnifyTaskModel();
+	public final DirectoryClassLoader classLoader;
 
 	public final List<File> classPath;
 	private final File outputPath;
@@ -76,14 +88,9 @@ public class JavaTXCompiler {
 	public DirectoryClassLoader getClassLoader() {
 		return classLoader;
 	}
-   
-	public JavaTXCompiler(File sourceFile) throws IOException, ClassNotFoundException {
-		this(Arrays.asList(sourceFile), List.of(), new File("."));
-	}
 
-	public JavaTXCompiler(File sourceFile, Boolean log) throws IOException, ClassNotFoundException {
-		this(sourceFile);
-		this.log = log;
+	public JavaTXCompiler(File sourceFile) throws IOException, ClassNotFoundException {
+		this(Collections.singletonList(sourceFile), List.of(), new File("."));
 	}
 
 	public JavaTXCompiler(List<File> sourceFiles) throws IOException, ClassNotFoundException {
@@ -91,6 +98,9 @@ public class JavaTXCompiler {
 	}
 
 	public JavaTXCompiler(List<File> sources, List<File> contextPath, File outputPath) throws IOException, ClassNotFoundException {
+		// ensure new default placeholder registry for tests
+		defaultClientPlaceholderRegistry = new PlaceholderRegistry();
+
 		var path = new ArrayList<>(contextPath);
 		if (contextPath.isEmpty()) {
 			// When no contextPaths are given, the working directory is the sources root
@@ -98,7 +108,7 @@ public class JavaTXCompiler {
 		}
 		if (outputPath != null) path.add(outputPath);
 		classLoader = new DirectoryClassLoader(path, ClassLoader.getSystemClassLoader());
-		environment = new CompilationEnvironment(sources);
+		environment = new CompilationEnvironment(sources, classLoader);
 		classPath = path;
 		this.outputPath = outputPath;
 
@@ -300,120 +310,51 @@ public class JavaTXCompiler {
 		Set<Set<UnifyPair>> results = new HashSet<>();
 		UnifyResultModel urm = null;
 		// urm.addUnifyResultListener(resultListener);
-		try {
-			logFile = logFile == null ? new FileWriter(new File("log_" + sourceFiles.keySet().iterator().next().getName())) : logFile;
-			IFiniteClosure finiteClosure = UnifyTypeFactory.generateFC(allClasses, logFile, getClassLoader(), this);
-			System.out.println(finiteClosure);
-			urm = new UnifyResultModel(cons, finiteClosure);
-			urm.addUnifyResultListener(resultListener);
-			ConstraintSet<UnifyPair> unifyCons = UnifyTypeFactory.convert(this, cons);
+		logFile = logFile == null ? new FileWriter("log_" + sourceFiles.keySet().iterator().next().getName()) : logFile;
+		Logger logger = new Logger(logFile, "TypeInferenceAsync");
+		UnifyContext context = new UnifyContext(logger, true, urm, usedTasks, defaultClientPlaceholderRegistry);
 
-			Function<UnifyPair, UnifyPair> distributeInnerVars = x -> {
-				UnifyType lhs, rhs;
-				if (((lhs = x.getLhsType()) instanceof PlaceholderType) && ((rhs = x.getRhsType()) instanceof PlaceholderType) && (((PlaceholderType) lhs).isInnerType() || ((PlaceholderType) rhs).isInnerType())) {
-					((PlaceholderType) lhs).setInnerType(true);
-					((PlaceholderType) rhs).setInnerType(true);
-				}
-				return x;
+		IFiniteClosure finiteClosure = UnifyTypeFactory.generateFC(allClasses, logger, getClassLoader(), this, context.placeholderRegistry());
+		logger.info(finiteClosure.toString());
+		urm = new UnifyResultModel(cons, finiteClosure);
+		urm.addUnifyResultListener(resultListener);
+		ConstraintSet<UnifyPair> unifyCons = UnifyTypeFactory.convert(this, cons, context.placeholderRegistry());
 
-			};
-			logFile.write(unifyCons.toString());
-			unifyCons = unifyCons.map(distributeInnerVars);
-			logFile.write(unifyCons.toString());
-			TypeUnify unify = new TypeUnify();
-			// Set<Set<UnifyPair>> results = new HashSet<>(); Nach vorne gezogen
-			logFile.write("FC:\\" + finiteClosure.toString() + "\n");
-			for (SourceFile f : this.sourceFiles.values()) {
-				logFile.write(ASTTypePrinter.print(f));
+		Function<UnifyPair, UnifyPair> distributeInnerVars = x -> {
+			UnifyType lhs, rhs;
+			if (((lhs = x.getLhsType()) instanceof PlaceholderType) && ((rhs = x.getRhsType()) instanceof PlaceholderType) && (((PlaceholderType) lhs).isInnerType() || ((PlaceholderType) rhs).isInnerType())) {
+				((PlaceholderType) lhs).setInnerType(true);
+				((PlaceholderType) rhs).setInnerType(true);
 			}
-			logFile.flush();
+			return x;
 
-			Set<String> methodParaTypeVarNames = allClasses.stream().map(x -> x.getMethods().stream().map(y -> y.getParameterList().getFormalparalist().stream().filter(z -> z.getType() instanceof TypePlaceholder).map(z -> ((TypePlaceholder) z.getType()).getName()).collect(Collectors.toCollection(HashSet::new))).reduce(new HashSet<String>(), (a, b) -> {
-				a.addAll(b);
-				return a;
-			}, (a, b) -> {
-				a.addAll(b);
-				return a;
-			})).reduce(new HashSet<String>(), (a, b) -> {
-				a.addAll(b);
-				return a;
-			});
-
-			Set<String> constructorParaTypeVarNames = allClasses.stream().map(x -> x.getConstructors().stream().map(y -> y.getParameterList().getFormalparalist().stream().filter(z -> z.getType() instanceof TypePlaceholder).map(z -> ((TypePlaceholder) z.getType()).getName()).collect(Collectors.toCollection(HashSet::new))).reduce(new HashSet<String>(), (a, b) -> {
-				a.addAll(b);
-				return a;
-			}, (a, b) -> {
-				a.addAll(b);
-				return a;
-			})).reduce(new HashSet<String>(), (a, b) -> {
-				a.addAll(b);
-				return a;
-			});
-
-			Set<String> paraTypeVarNames = methodParaTypeVarNames;
-			paraTypeVarNames.addAll(constructorParaTypeVarNames);
-
-			Set<String> returnTypeVarNames = allClasses.stream().map(x -> x.getMethods().stream().filter(y -> y.getReturnType() instanceof TypePlaceholder).map(z -> ((TypePlaceholder) z.getReturnType()).getName()).collect(Collectors.toCollection(HashSet::new))).reduce((a, b) -> {
-				a.addAll(b);
-				return a;
-			}).get();
-
-			Set<String> fieldTypeVarNames = allClasses.stream().map(x -> x.getFieldDecl().stream().filter(y -> y.getReturnType() instanceof TypePlaceholder).map(z -> ((TypePlaceholder) z.getReturnType()).getName()).collect(Collectors.toCollection(HashSet::new))).reduce((a, b) -> {
-				a.addAll(b);
-				return a;
-			}).get();
-
-			returnTypeVarNames.addAll(fieldTypeVarNames);
-
-			unifyCons = unifyCons.map(x -> {
-				// Hier muss ueberlegt werden, ob
-				// 1. alle Argument- und Retuntyp-Variablen in allen UnifyPairs
-				// mit disableWildcardtable() werden.
-				// 2. alle Typvariablen mit Argument- oder Retuntyp-Variablen
-				// in Beziehung auch auf disableWildcardtable() gesetzt werden muessen
-				// PL 2018-04-23
-				if ((x.getLhsType() instanceof PlaceholderType)) {
-					if (paraTypeVarNames.contains(x.getLhsType().getName())) {
-						((PlaceholderType) x.getLhsType()).setVariance((byte) 1);
-						((PlaceholderType) x.getLhsType()).disableWildcardtable();
-					}
-					if (returnTypeVarNames.contains(x.getLhsType().getName())) {
-						((PlaceholderType) x.getLhsType()).setVariance((byte) -1);
-						((PlaceholderType) x.getLhsType()).disableWildcardtable();
-					}
-				}
-				if ((x.getRhsType() instanceof PlaceholderType)) {
-					if (paraTypeVarNames.contains(x.getRhsType().getName())) {
-						((PlaceholderType) x.getRhsType()).setVariance((byte) 1);
-						((PlaceholderType) x.getRhsType()).disableWildcardtable();
-					}
-					if (returnTypeVarNames.contains(x.getRhsType().getName())) {
-						((PlaceholderType) x.getRhsType()).setVariance((byte) -1);
-						((PlaceholderType) x.getRhsType()).disableWildcardtable();
-					}
-				}
-				return x;// HIER DIE JEWEILS RECHT BZW. LINKE SEITE AUF GLEICHE VARIANZ SETZEN WIE DIE
-				// JEWEILS ANDERE SEITE
-			});
-			Set<PlaceholderType> varianceTPHold;
-			Set<PlaceholderType> varianceTPH = new HashSet<>();
-			varianceTPH = varianceInheritanceConstraintSet(unifyCons);
-
-			/*
-			 * PL 2018-11-07 wird in varianceInheritanceConstraintSet erledigt do { //PL 2018-11-05 Huellenbildung Variance auf alle TPHs der Terme auf der jeweiligen //anderen Seite übertragen varianceTPHold = new HashSet<>(varianceTPH); varianceTPH = varianceInheritanceConstraintSet(unifyCons); unifyCons.map( y -> { if ((y.getLhsType() instanceof PlaceholderType) && (y.getRhsType() instanceof PlaceholderType)) { if (((PlaceholderType)y.getLhsType()).getVariance() != 0 &&
-			 * ((PlaceholderType)y.getRhsType()).getVariance() == 0) { ((PlaceholderType)y.getRhsType()).setVariance(((PlaceholderType)y.getLhsType( )).getVariance()); } if (((PlaceholderType)y.getLhsType()).getVariance() == 0 && ((PlaceholderType)y.getRhsType()).getVariance() != 0) { ((PlaceholderType)y.getLhsType()).setVariance(((PlaceholderType)y.getRhsType( )).getVariance()); } } return y; } ); } while (!varianceTPHold.equals(varianceTPH));
-			 */
-
-			// Set<Set<UnifyPair>> result = unify.unifySequential(xConsSet, finiteClosure,
-			// logFile, log);
-			// Set<Set<UnifyPair>> result = unify.unify(xConsSet, finiteClosure);
-			List<Set<Constraint<UnifyPair>>> oderConstraints = unifyCons.getOderConstraints()/*
-																								 * .stream().map(x -> { Set<Set<UnifyPair>> ret = new HashSet<>(); for (Constraint<UnifyPair> y : x) { ret.add(new HashSet<>(y)); } return ret; }).collect(Collectors. toCollection(ArrayList::new))
-																								 */;
-			unify.unifyAsync(unifyCons.getUndConstraints(), oderConstraints, finiteClosure, logFile, log, urm, usedTasks);
-		} catch (IOException e) {
-			System.err.println("kein LogFile");
+		};
+		logger.debug(unifyCons.toString());
+		unifyCons = unifyCons.map(distributeInnerVars);
+		logger.debug(unifyCons.toString());
+		// Set<Set<UnifyPair>> results = new HashSet<>(); Nach vorne gezogen
+		logger.debug("FC:\\" + finiteClosure.toString() + "\n");
+		for (SourceFile f : this.sourceFiles.values()) {
+			logger.debug(ASTTypePrinter.print(f));
 		}
+		// logFile.flush();
+		Set<PlaceholderType> varianceTPHold;
+		Set<PlaceholderType> varianceTPH = new HashSet<>();
+		varianceTPH = varianceInheritanceConstraintSet(unifyCons);
+
+		/*
+		 * PL 2018-11-07 wird in varianceInheritanceConstraintSet erledigt do { //PL 2018-11-05 Huellenbildung Variance auf alle TPHs der Terme auf der jeweiligen //anderen Seite übertragen varianceTPHold = new HashSet<>(varianceTPH); varianceTPH = varianceInheritanceConstraintSet(unifyCons); unifyCons.map( y -> { if ((y.getLhsType() instanceof PlaceholderType) && (y.getRhsType() instanceof PlaceholderType)) { if (((PlaceholderType)y.getLhsType()).getVariance() != 0 &&
+		 * ((PlaceholderType)y.getRhsType()).getVariance() == 0) { ((PlaceholderType)y.getRhsType()).setVariance(((PlaceholderType)y.getLhsType( )).getVariance()); } if (((PlaceholderType)y.getLhsType()).getVariance() == 0 && ((PlaceholderType)y.getRhsType()).getVariance() != 0) { ((PlaceholderType)y.getLhsType()).setVariance(((PlaceholderType)y.getRhsType( )).getVariance()); } } return y; } ); } while (!varianceTPHold.equals(varianceTPH));
+		 */
+
+		// Set<Set<UnifyPair>> result = unify.unifySequential(xConsSet, finiteClosure,
+		// logFile, log);
+		// Set<Set<UnifyPair>> result = unify.unify(xConsSet, finiteClosure);
+		List<Set<Constraint<UnifyPair>>> oderConstraints = unifyCons.getOderConstraints()/*
+																							 * .stream().map(x -> { Set<Set<UnifyPair>> ret = new HashSet<>(); for (Constraint<UnifyPair> y : x) { ret.add(new HashSet<>(y)); } return ret; }).collect(Collectors. toCollection(ArrayList::new))
+																							 */;
+		TypeUnify.unifyAsync(unifyCons.getUndConstraints(), oderConstraints, finiteClosure, context);
+
 		return urm;
 	}
 
@@ -433,175 +374,113 @@ public class JavaTXCompiler {
 
 		final ConstraintSet<Pair> cons = getConstraints(file);
 		Set<Set<UnifyPair>> results = new HashSet<>();
-		try {
-			var logFolder = new File(System.getProperty("user.dir") + "/logFiles/");
-			if (log) logFolder.mkdirs();
-			Writer logFile = log ? new FileWriter(new File(logFolder, "log_" + sourceFiles.keySet().iterator().next().getName())) : new OutputStreamWriter(new NullOutputStream());
-			IFiniteClosure finiteClosure = UnifyTypeFactory.generateFC(allClasses.stream().toList(), logFile, classLoader, this);
-			System.out.println(finiteClosure);
-			ConstraintSet<UnifyPair> unifyCons = UnifyTypeFactory.convert(this, cons);
-			System.out.println("xxx1");
-			Function<UnifyPair, UnifyPair> distributeInnerVars = x -> {
-				UnifyType lhs, rhs;
-				if (((lhs = x.getLhsType()) instanceof PlaceholderType) && ((rhs = x.getRhsType()) instanceof PlaceholderType) && (((PlaceholderType) lhs).isInnerType() || ((PlaceholderType) rhs).isInnerType())) {
-					((PlaceholderType) lhs).setInnerType(true);
-					((PlaceholderType) rhs).setInnerType(true);
-				}
-				return x;
+		PlaceholderRegistry placeholderRegistry = new PlaceholderRegistry();
 
-			};
+		var logFolder = new File(System.getProperty("user.dir") + "/logFiles/");
+		if (ConsoleInterface.writeLogFiles && !logFolder.mkdirs()) throw new RuntimeException("Could not creat directoy for log files: " + logFolder);
+		Writer logFile = ConsoleInterface.writeLogFiles ? new FileWriter(new File(logFolder, "log_" + sourceFiles.keySet().iterator().next().getName())) : new OutputStreamWriter(new NullOutputStream());
+		Logger logger = new Logger(logFile, "TypeInference");
 
-			logFile.write("Unify:" + unifyCons.toString());
-			System.out.println("Unify:" + unifyCons.toString());
-			unifyCons = unifyCons.map(distributeInnerVars);
-			logFile.write("\nUnify_distributeInnerVars: " + unifyCons.toString());
-			TypeUnify unify = new TypeUnify();
-			// Set<Set<UnifyPair>> results = new HashSet<>(); Nach vorne gezogen
-			logFile.write("FC:\\" + finiteClosure.toString() + "\n");
-			logFile.write(ASTTypePrinter.print(sf));
-			System.out.println(ASTTypePrinter.print(sf));
-			logFile.flush();
-
-			Set<String> methodParaTypeVarNames = allClasses.stream().map(x -> x.getMethods().stream().map(y -> y.getParameterList().getFormalparalist().stream().filter(z -> z.getType() instanceof TypePlaceholder).map(z -> ((TypePlaceholder) z.getType()).getName()).collect(Collectors.toCollection(HashSet::new))).reduce(new HashSet<String>(), (a, b) -> {
-				a.addAll(b);
-				return a;
-			}, (a, b) -> {
-				a.addAll(b);
-				return a;
-			})).reduce(new HashSet<String>(), (a, b) -> {
-				a.addAll(b);
-				return a;
-			});
-
-			Set<String> constructorParaTypeVarNames = allClasses.stream().map(x -> x.getConstructors().stream().map(y -> y.getParameterList().getFormalparalist().stream().filter(z -> z.getType() instanceof TypePlaceholder).map(z -> ((TypePlaceholder) z.getType()).getName()).collect(Collectors.toCollection(HashSet::new))).reduce(new HashSet<String>(), (a, b) -> {
-				a.addAll(b);
-				return a;
-			}, (a, b) -> {
-				a.addAll(b);
-				return a;
-			})).reduce(new HashSet<String>(), (a, b) -> {
-				a.addAll(b);
-				return a;
-			});
-
-			Set<String> paraTypeVarNames = methodParaTypeVarNames;
-			paraTypeVarNames.addAll(constructorParaTypeVarNames);
-
-			Set<String> returnTypeVarNames = allClasses.stream().map(x -> x.getMethods().stream().filter(y -> y.getReturnType() instanceof TypePlaceholder).map(z -> ((TypePlaceholder) z.getReturnType()).getName()).collect(Collectors.toCollection(HashSet::new))).reduce((a, b) -> {
-				a.addAll(b);
-				return a;
-			}).get();
-
-			Set<String> fieldTypeVarNames = allClasses.stream().map(x -> x.getFieldDecl().stream().filter(y -> y.getReturnType() instanceof TypePlaceholder).map(z -> ((TypePlaceholder) z.getReturnType()).getName()).collect(Collectors.toCollection(HashSet::new))).reduce((a, b) -> {
-				a.addAll(b);
-				return a;
-			}).get();
-
-			returnTypeVarNames.addAll(fieldTypeVarNames);
-
-			unifyCons = unifyCons.map(x -> {
-				// Hier muss ueberlegt werden, ob
-				// 1. alle Argument- und Retuntyp-Variablen in allen UnifyPairs
-				// mit disableWildcardtable() werden.
-				// 2. alle Typvariablen mit Argument- oder Retuntyp-Variablen
-				// in Beziehung auch auf disableWildcardtable() gesetzt werden muessen
-				// PL 2018-04-23
-				if ((x.getLhsType() instanceof PlaceholderType)) {
-					if (paraTypeVarNames.contains(x.getLhsType().getName())) {
-						((PlaceholderType) x.getLhsType()).setVariance((byte) 1);
-						((PlaceholderType) x.getLhsType()).disableWildcardtable();
-					}
-					if (returnTypeVarNames.contains(x.getLhsType().getName())) {
-						((PlaceholderType) x.getLhsType()).setVariance((byte) -1);
-						((PlaceholderType) x.getLhsType()).disableWildcardtable();
-					}
-				}
-				if ((x.getRhsType() instanceof PlaceholderType)) {
-					if (paraTypeVarNames.contains(x.getRhsType().getName())) {
-						((PlaceholderType) x.getRhsType()).setVariance((byte) 1);
-						((PlaceholderType) x.getRhsType()).disableWildcardtable();
-					}
-					if (returnTypeVarNames.contains(x.getRhsType().getName())) {
-						((PlaceholderType) x.getRhsType()).setVariance((byte) -1);
-						((PlaceholderType) x.getRhsType()).disableWildcardtable();
-					}
-				}
-				return x;// HIER DIE JEWEILS RECHT BZW. LINKE SEITE AUF GLEICHE VARIANZ SETZEN WIE DIE
-				// JEWEILS ANDERE SEITE
-			});
-
-			// PL 2020-02-05 alle Oder-Constraints Receiver und Parameter werden auf
-			// variance 1 gesetzt
-			// Es wird davon ausgegangen, dass in OderConstraints in Bedingungen für
-			// Parameter die Typen der Argumente links stehen
-			// und die Typen der Rückgabewerte immer rechts stehen
-
-			/*
-			 * unifyCons.getOderConstraints().forEach(z -> z.forEach(y -> y.forEach(x -> { if ((x.getLhsType() instanceof PlaceholderType) && x.getPairOp().compareTo(PairOperator.SMALLERDOT) == 0) { ((PlaceholderType) x.getLhsType()).setVariance((byte)1); } else if ((x.getRhsType() instanceof PlaceholderType) && x.getPairOp().compareTo(PairOperator.EQUALSDOT) == 0) { ((PlaceholderType) x.getRhsType()).setVariance((byte)-1); } })));
-			 */
-
-			System.out.println("Unify nach Oder-Constraints-Anpassung:" + unifyCons.toString());
-			Set<PlaceholderType> varianceTPHold;
-			Set<PlaceholderType> varianceTPH = new HashSet<>();
-			varianceTPH = varianceInheritanceConstraintSet(unifyCons);
-
-			/*
-			 * PL 2018-11-07 wird in varianceInheritanceConstraintSet erledigt do { //PL 2018-11-05 Huellenbildung Variance auf alle TPHs der Terme auf der jeweiligen //anderen Seite übertragen varianceTPHold = new HashSet<>(varianceTPH); varianceTPH = varianceInheritanceConstraintSet(unifyCons); unifyCons.map( y -> { if ((y.getLhsType() instanceof PlaceholderType) && (y.getRhsType() instanceof PlaceholderType)) { if (((PlaceholderType)y.getLhsType()).getVariance() != 0 &&
-			 * ((PlaceholderType)y.getRhsType()).getVariance() == 0) { ((PlaceholderType)y.getRhsType()).setVariance(((PlaceholderType)y.getLhsType( )).getVariance()); } if (((PlaceholderType)y.getLhsType()).getVariance() == 0 && ((PlaceholderType)y.getRhsType()).getVariance() != 0) { ((PlaceholderType)y.getLhsType()).setVariance(((PlaceholderType)y.getRhsType( )).getVariance()); } } return y; } ); } while (!varianceTPHold.equals(varianceTPH));
-			 */
-
-			// Set<Set<UnifyPair>> result = unify.unifySequential(xConsSet, finiteClosure,
-			// logFile, log);
-			// Set<Set<UnifyPair>> result = unify.unify(xConsSet, finiteClosure);
-			List<Set<Constraint<UnifyPair>>> oderConstraints = unifyCons.getOderConstraints()// .stream().map(x -> {
-			/*
-			 * Set<Set<UnifyPair>> ret = new HashSet<>(); for (Constraint<UnifyPair> y : x) { ret.add(new HashSet<>(y)); } return ret; }).collect(Collectors.toCollection(ArrayList::new))
-			 */;
-			if (resultmodel) {
-				/* UnifyResultModel Anfang */
-				UnifyResultModel urm = new UnifyResultModel(cons, finiteClosure);
-				UnifyResultListenerImpl li = new UnifyResultListenerImpl();
-				urm.addUnifyResultListener(li);
-				unify.unifyParallel(unifyCons.getUndConstraints(), oderConstraints, finiteClosure, logFile, log, urm, usedTasks);
-				System.out.println("RESULT Final: " + li.getResults());
-				System.out.println("Constraints for Generated Generics: " + " ???");
-				logFile.write("RES_FINAL: " + li.getResults().toString() + "\n");
-				logFile.flush();
-				return li.getResults();
+		FiniteClosure finiteClosure = UnifyTypeFactory.generateFC(allClasses.stream().toList(), logger, classLoader, this, placeholderRegistry);
+		logger.info(finiteClosure.toString());
+		ConstraintSet<UnifyPair> unifyCons = UnifyTypeFactory.convert(this, cons, placeholderRegistry);
+		logger.info("xxx1");
+		Function<UnifyPair, UnifyPair> distributeInnerVars = x -> {
+			UnifyType lhs, rhs;
+			if (((lhs = x.getLhsType()) instanceof PlaceholderType) && ((rhs = x.getRhsType()) instanceof PlaceholderType) && (((PlaceholderType) lhs).isInnerType() || ((PlaceholderType) rhs).isInnerType())) {
+				((PlaceholderType) lhs).setInnerType(true);
+				((PlaceholderType) rhs).setInnerType(true);
 			}
-			/* UnifyResultModel End */
-			else {
-				// Set<Set<UnifyPair>> result = unify.unify(unifyCons.getUndConstraints(),
-				// oderConstraints, finiteClosure, logFile, log, new UnifyResultModel(cons,
-				// finiteClosure));
-				Set<Set<UnifyPair>> result = unify.unifyOderConstraints(unifyCons.getUndConstraints(), oderConstraints, finiteClosure, logFile, log, new UnifyResultModel(cons, finiteClosure), usedTasks);
-				System.out.println("RESULT: " + result);
-				logFile.write("RES: " + result.toString() + "\n");
-				logFile.flush();
-				results.addAll(result);
+			return x;
 
-				results = results.stream().map(x -> {
-					Optional<Set<UnifyPair>> res = new RuleSet().subst(x.stream().map(y -> {
-						if (y.getPairOp() == PairOperator.SMALLERDOTWC)
-							y.setPairOp(PairOperator.EQUALSDOT);
-						return y; // alle Paare a <.? b erden durch a =. b ersetzt
-					}).collect(Collectors.toCollection(HashSet::new)));
-					if (res.isPresent()) {// wenn subst ein Erg liefert wurde was veraendert
-						return new TypeUnifyTask().applyTypeUnificationRules(res.get(), finiteClosure);
-					} else
-						return x; // wenn nichts veraendert wurde wird x zurueckgegeben
-				}).collect(Collectors.toCollection(HashSet::new));
-				System.out.println("RESULT Final: " + results);
-				System.out.println("Constraints for Generated Generics: " + " ???");
-				logFile.write("RES_FINAL: " + results.toString() + "\n");
-				logFile.flush();
-				logFile.write("PLACEHOLDERS: " + PlaceholderType.EXISTING_PLACEHOLDERS);
-				logFile.flush();
-			}
-		} catch (IOException e) {
-			System.err.println("kein LogFile");
+		};
+
+    logger.debug("Unify:" + unifyCons.toString());
+    logger.info("Unify:" + unifyCons.toString());
+    unifyCons = unifyCons.map(distributeInnerVars);
+    logger.debug("\nUnify_distributeInnerVars: " + unifyCons.toString());
+    // Set<Set<UnifyPair>> results = new HashSet<>(); Nach vorne gezogen
+    logger.debug("FC:\\" + finiteClosure.toString() + "\n");
+    logger.info(ASTTypePrinter.print(sf));
+    // logFile.flush();
+    List<UnifyPair> andConstraintsSorted = unifyCons.getUndConstraints().stream()
+        .sorted(Comparator.comparing(UnifyPair::getPairOp).thenComparing(UnifyPair::getLhsType, Comparator.comparing(UnifyType::getName)))
+        .collect(Collectors.toList());
+
+    logger.info(andConstraintsSorted);
+
+    Set<PlaceholderType> varianceTPHold;
+    Set<PlaceholderType> varianceTPH = new HashSet<>();
+    varianceTPH = varianceInheritanceConstraintSet(unifyCons);
+
+		/*
+		 * PL 2018-11-07 wird in varianceInheritanceConstraintSet erledigt do { //PL 2018-11-05 Huellenbildung Variance auf alle TPHs der Terme auf der jeweiligen //anderen Seite übertragen varianceTPHold = new HashSet<>(varianceTPH); varianceTPH = varianceInheritanceConstraintSet(unifyCons); unifyCons.map( y -> { if ((y.getLhsType() instanceof PlaceholderType) && (y.getRhsType() instanceof PlaceholderType)) { if (((PlaceholderType)y.getLhsType()).getVariance() != 0 &&
+		 * ((PlaceholderType)y.getRhsType()).getVariance() == 0) { ((PlaceholderType)y.getRhsType()).setVariance(((PlaceholderType)y.getLhsType( )).getVariance()); } if (((PlaceholderType)y.getLhsType()).getVariance() == 0 && ((PlaceholderType)y.getRhsType()).getVariance() != 0) { ((PlaceholderType)y.getLhsType()).setVariance(((PlaceholderType)y.getRhsType( )).getVariance()); } } return y; } ); } while (!varianceTPHold.equals(varianceTPH));
+		 */
+
+    // Set<Set<UnifyPair>> result = unify.unifySequential(xConsSet, finiteClosure,
+    // logFile, log);
+    // Set<Set<UnifyPair>> result = unify.unify(xConsSet, finiteClosure);
+    List<Set<Constraint<UnifyPair>>> oderConstraints = unifyCons.getOderConstraints()// .stream().map(x -> {
+    /*
+     * Set<Set<UnifyPair>> ret = new HashSet<>(); for (Constraint<UnifyPair> y : x) { ret.add(new HashSet<>(y)); } return ret; }).collect(Collectors.toCollection(ArrayList::new))
+     */;
+    if (ConsoleInterface.unifyServerUrl.isPresent()) {
+        UnifyResultModel urm = new UnifyResultModel(cons, finiteClosure);
+        UnifyContext context = new UnifyContext(logger, true, urm, usedTasks, placeholderRegistry);
+        SocketFuture<UnifyResultPacket> future = SocketClient.execute(
+          UnifyRequestPacket.create(finiteClosure, cons, unifyCons, context.placeholderRegistry())
+        );
+        SocketClient.execute(SetAutoclosePacket.create());
+        return future.get().getResultSet(context);
+    }
+    else if (resultmodel) {
+        /* UnifyResultModel Anfang */
+        UnifyResultModel urm = new UnifyResultModel(cons, finiteClosure);
+        UnifyResultListenerImpl li = new UnifyResultListenerImpl();
+        urm.addUnifyResultListener(li);
+				UnifyContext context = new UnifyContext(logger, true, urm, usedTasks, placeholderRegistry);
+				TypeUnify.unifyParallel(unifyCons.getUndConstraints(), oderConstraints, finiteClosure, context);
+        var finalResults = li.getResults().stream().sorted().toList();
+        int i = 0;
+        logger.info("RESULT Final: ");
+        for (var result : finalResults){
+          logger.info("Result: " + i++);
+          logger.info(result.getSortedResults());
+        }
+        logger.info("RES_FINAL: " + li.getResults().toString() + "\n");
+        return li.getResults();
+    }
+    /* UnifyResultModel End */
+    else {
+        // Set<Set<UnifyPair>> result = unify.unify(unifyCons.getUndConstraints(),
+        // oderConstraints, finiteClosure, logFile, log, new UnifyResultModel(cons,
+        // finiteClosure));
+        UnifyContext context = new UnifyContext(logger, false, new UnifyResultModel(cons, finiteClosure), usedTasks, placeholderRegistry);
+        Set<Set<UnifyPair>> result = TypeUnify.unifyOderConstraints(unifyCons.getUndConstraints(), oderConstraints, finiteClosure, context);
+        logger.info("RESULT: " + result);
+        results.addAll(result);
+
+        results = results.stream().map(x -> {
+          Optional<Set<UnifyPair>> res = new RuleSet(placeholderRegistry).subst(x.stream().map(y -> {
+            if (y.getPairOp() == PairOperator.SMALLERDOTWC)
+              y.setPairOp(PairOperator.EQUALSDOT);
+            return y; // alle Paare a <.? b erden durch a =. b ersetzt
+          }).collect(Collectors.toCollection(HashSet::new)));
+          if (res.isPresent()) {// wenn subst ein Erg liefert wurde was veraendert
+            return new TypeUnifyTask(context).applyTypeUnificationRules(res.get(), finiteClosure);
+          } else
+            return x; // wenn nichts veraendert wurde wird x zurueckgegeben
+        }).collect(Collectors.toCollection(HashSet::new));
+        logger.info("RESULT Final: " + results);
+        logger.info("Constraints for Generated Generics: " + " ???");
+        logger.debug("RES_FINAL: " + results.toString() + "\n");
+        // logFile.flush();
+        logger.debug("PLACEHOLDERS: " + placeholderRegistry);
+        // logFile.flush();
 		}
-		return results.stream().map((unifyPairs -> new ResultSet(UnifyTypeFactory.convert(unifyPairs, Pair.generateTPHMap(cons))))).collect(Collectors.toList());
+
+		return results.stream().map((unifyPairs -> new ResultSet(UnifyTypeFactory.convert(unifyPairs, Pair.generateTPHMap(cons), placeholderRegistry)))).collect(Collectors.toList());
 	}
 
 	/**
@@ -733,10 +612,6 @@ public class JavaTXCompiler {
 		}
 	}
 
-	/**
-	 * @param path - output-Directory can be null, then class file output is in the same directory as the parsed source files
-	 * @return
-	 */
 	public Map<JavaClassName, byte[]> generateBytecode(File sourceFile) throws ClassNotFoundException, IOException {
 		var sf = sourceFiles.get(sourceFile);
 		if (sf.isGenerated()) return null;
@@ -778,11 +653,12 @@ public class JavaTXCompiler {
 			var codegen = new Codegen(converter.convert(clazz), this, converter);
 			var code = codegen.generate();
 			generatedClasses.put(clazz.getClassName(), code);
-			converter.auxiliaries.forEach((name, source) -> {
-				generatedClasses.put(new JavaClassName(name), source);
-			});
 		}
 		generatedGenerics.put(sf, converter.javaGenerics());
+		converter.generateFunNTypes();
+		converter.auxiliaries.forEach((name, source) -> {
+			generatedClasses.put(new JavaClassName(name), source);
+		});
 		return generatedClasses;
 	}
 
@@ -790,15 +666,15 @@ public class JavaTXCompiler {
 		FileOutputStream output;
 		for (JavaClassName name : classFiles.keySet()) {
 			byte[] bytecode = classFiles.get(name);
-			System.out.println("generating " + name + ".class file ...");
+			defaultLogger.info("generating " + name + ".class file ...");
 			var subPath = preserveHierarchy ? path : Path.of(path.toString(), name.getPackageName().split("\\.")).toFile();
 			File outputFile = new File(subPath, name.getClassName() + ".class");
 			outputFile.getAbsoluteFile().getParentFile().mkdirs();
-			System.out.println(outputFile);
+			defaultLogger.info(outputFile.toString());
 			output = new FileOutputStream(outputFile);
 			output.write(bytecode);
 			output.close();
-			System.out.println(name + ".class file generated");
+			defaultLogger.success(name + ".class file generated");
 		}
 	}
 

src/main/java/de/dhbwstuttgart/core/JavaTXServer.java

@@ -0,0 +1,31 @@
+package de.dhbwstuttgart.core;
+
+import de.dhbwstuttgart.server.SocketServer;
+
+public class JavaTXServer {
+
+  public static boolean isRunning = false;
+
+  final SocketServer socketServer;
+
+  public JavaTXServer(int port) {
+    this.socketServer = new SocketServer(port);
+  }
+
+  public void listen() {
+    isRunning = true;
+    socketServer.start();
+  }
+
+  public void forceStop() {
+    try {
+      socketServer.stop();
+    }
+    catch (InterruptedException exception) {
+      System.err.println("Interrupted socketServer: " + exception);
+    }
+    isRunning = false;
+  }
+
+
+}

src/main/java/de/dhbwstuttgart/environment/ByteArrayClassLoader.java

@@ -1,13 +0,0 @@
-package de.dhbwstuttgart.environment;
-
-public class ByteArrayClassLoader extends ClassLoader implements IByteArrayClassLoader {
-    @Override
-    public Class _defineClass(String name, byte[] code, int i, int length) throws ClassFormatError {
-        return defineClass(name, code, i, length);
-    }
-
-    @Override
-    public Class<?> findClass(String name) throws ClassNotFoundException {
-        return super.findClass(name);
-    }
-}

src/main/java/de/dhbwstuttgart/environment/CompilationEnvironment.java

@@ -34,7 +34,7 @@ public class CompilationEnvironment {
 	 * 
 	 * @param sourceFiles die zu kompilierenden Dateien
 	 */
-	public CompilationEnvironment(List<File> sourceFiles) {
+	public CompilationEnvironment(List<File> sourceFiles, DirectoryClassLoader classLoader) {
 		/**
 		 * Java 9 bringt einige Änderungen am Classloader So funktioniert der BootClassLoader nicht mehr. hier gibts ein paar Quellen zum nachlesen: http://java9.wtf/class-loading/ https://stackoverflow.com/questions/46494112/classloaders-hierarchy-in-java-9
 		 *
@@ -54,7 +54,7 @@ public class CompilationEnvironment {
 		// librarys = Arrays.asList(loader.getURLs());
 
 		this.sourceFiles = sourceFiles;
-		this.packageCrawler = new PackageCrawler(librarys);
+		this.packageCrawler = new PackageCrawler(classLoader);
 	}
 
 	public void addClassesToRegistry(JavaClassRegistry registry, SourceFileContext tree, File sourceFile, JavaTXCompiler compiler) throws ClassNotFoundException, IOException {
@@ -104,12 +104,4 @@ public class CompilationEnvironment {
 		return packageName;
 	}
 
-	public List<ClassOrInterface> getAllAvailableClasses() {
-		List<ClassOrInterface> ret = new ArrayList<>();
-		for (Class c : new PackageCrawler(librarys).getAllAvailableClasses()) {
-			ret.add(ASTFactory.createClass(c));
-		}
-		return ret;
-	}
-
 }

src/main/java/de/dhbwstuttgart/environment/DirectoryClassLoader.java

@@ -5,31 +5,61 @@ import java.io.IOException;
 import java.net.MalformedURLException;
 import java.net.URL;
 import java.net.URLClassLoader;
-import java.nio.file.Files;
-import java.nio.file.Path;
+import java.nio.file.*;
+import java.util.ArrayList;
 import java.util.List;
 import java.util.stream.Collectors;
 
 public class DirectoryClassLoader extends URLClassLoader implements IByteArrayClassLoader {
-    public DirectoryClassLoader(File directory, java.lang.ClassLoader parent) {
-        super(generateURLArray(dirToURL(directory)), parent);
-    }
+//    public DirectoryClassLoader(File directory, java.lang.ClassLoader parent) {
+//        super(generateURLArray(dirToURL(directory)), parent);
+//    }
 
     public DirectoryClassLoader(List<File> directory, java.lang.ClassLoader parent) {
-        super(directory.stream().map(DirectoryClassLoader::dirToURL).collect(Collectors.toList()).toArray(new URL[0]), parent);
+        super(directory.stream().map(DirectoryClassLoader::dirToURL).flatMap(List::stream).collect(Collectors.toList()).toArray(new URL[0]), parent.getParent());
     }
 
     private static URL[] generateURLArray(URL url) {
         return new URL[]{url};
     }
 
-    private static URL dirToURL(File url){
-        if(!url.isDirectory())throw new RuntimeException(url.toString() + " is not a directory");
-        try {
-            return url.toURI().toURL();
-        } catch (MalformedURLException e) {
-            throw new RuntimeException(e);
+    private static List<URL> dirToURL(File file) {
+        //if(!url.isDirectory())throw new RuntimeException(url.toString() + " is not a directory");
+
+        Path dir;
+        if (file.isDirectory()) {
+            try {
+                return List.of(file.toURI().toURL()); // if file is a directory, use it as is
+            } catch (MalformedURLException e) {
+                e.printStackTrace();
+                return List.of();
+            }
         }
+
+        dir = file.toPath().getParent(); // if file is not a directory, get its parent directory
+        String pattern = file.toPath().getFileName().toString(); // use the file name as a glob pattern
+
+        List<URL> urls = new ArrayList<>();
+
+        try {
+            urls = Files.walk(dir)
+                    .filter(Files::isRegularFile) // only consider files (not directories)
+                    .filter(path -> {
+                        PathMatcher matcher = FileSystems.getDefault().getPathMatcher("glob:" + pattern);
+                        return matcher.matches(path.getFileName()); // match the file name against the pattern
+                    })
+                    .map(path -> {
+                        try {
+                            return path.toUri().toURL();
+                        } catch (MalformedURLException e) {
+                            throw new RuntimeException(e);
+                        }
+                    }) // convert the path to a URL
+                    .toList(); // print the path of each matching file
+        } catch (IOException | RuntimeException e) {
+            e.printStackTrace();
+        }
+        return urls;
     }
 
     @Override

src/main/java/de/dhbwstuttgart/environment/IByteArrayClassLoader.java

@@ -6,18 +6,22 @@ import java.nio.file.Path;
 
 public interface IByteArrayClassLoader {
 
-    Class loadClass(String path) throws ClassNotFoundException;
+    Class<?> loadClass(String path) throws ClassNotFoundException;
 
-    default Class loadClass(byte[] code) {
-        return this._defineClass(null, code, 0, code.length);
+    default Class<?> loadClass(byte[] code) {
+        return this.loadClass(null, code);
     }
 
-    default Class loadClass(Path path) throws IOException {
+    default Class<?> loadClass(String name, byte[] code) {
+        return this._defineClass(name, code, 0, code.length);
+    }
+
+    default Class<?> loadClass(Path path) throws IOException {
         var code = Files.readAllBytes(path);
         return this._defineClass(null, code, 0, code.length);
     }
 
     public Class<?> findClass(String name) throws ClassNotFoundException;
 
-    Class _defineClass(String name, byte[] code, int i, int length) throws ClassFormatError;
+    Class<?> _defineClass(String name, byte[] code, int i, int length) throws ClassFormatError;
 }

src/main/java/de/dhbwstuttgart/environment/PackageCrawler.java

@@ -1,17 +1,10 @@
 package de.dhbwstuttgart.environment;
 
-import java.net.URL;
+import io.github.classgraph.ClassGraph;
+import io.github.classgraph.ScanResult;
+
 import java.util.*;
 
-import org.reflections.Reflections;
-import org.reflections.scanners.ResourcesScanner;
-import org.reflections.scanners.SubTypesScanner;
-import org.reflections.util.ConfigurationBuilder;
-import org.reflections.util.FilterBuilder;
-
-import de.dhbwstuttgart.parser.scope.JavaClassName;
-import org.reflections.vfs.SystemDir;
-
 /**
  * Hilft beim Durchsuchen von Packages
  * Benutzt die Reflections-Library (https://github.com/ronmamo/reflections)
@@ -19,48 +12,30 @@ import org.reflections.vfs.SystemDir;
  */
 public class PackageCrawler {
 
-	final URL[] urls;
-	public PackageCrawler(List<URL> urlList) {
-		urls = urlList.toArray(new URL[0]);
+	final DirectoryClassLoader classLoader;
+	public PackageCrawler(DirectoryClassLoader classLoader) {
+		this.classLoader = classLoader;
 	}
 	
-    public Set<Class<?>> getClassesInPackage(String packageName){
-    	/*
-        List<DirectoryClassLoader> classLoadersList = new LinkedList<DirectoryClassLoader>();
-        classLoadersList.add(Thread.currentThread().getContextClassLoader());
-        classLoadersList.add(ClasspathHelper.staticClassLoader());
-        classLoadersList.add(Thread.currentThread().getContextClassLoader().getParent());
-        classLoadersList.add(DirectoryClassLoader.getSystemClassLoader());
-        String bootClassPath = System.getProperty("sun.boot.class.path");
-        ArrayList<URL> urlList = new ArrayList<>();
-        for(String path : bootClassPath.split(";")) {
-        	try {
-				urlList.add(new URL("file:"+path));
-			} catch (MalformedURLException e) {
-				new DebugException("Fehler im Classpath auf diesem System");
-			}
-        }
-        URL[] urls = urlList.toArray(new URL[0]);
-        classLoadersList.add(new URLClassLoader(urls, DirectoryClassLoader.getSystemClassLoader()));
-        */
-        Reflections reflections = new Reflections(new ConfigurationBuilder()
-                .setScanners(new SubTypesScanner(false /* don't exclude Object.class */), new ResourcesScanner())
-                .setUrls(urls)
-                .filterInputsBy(new FilterBuilder().include(FilterBuilder.prefix(packageName))));
+    public Set<Class<?>> getClassesInPackage(String packageName) {
+        var res = new HashSet<Class<?>>();
 
-        Set<Class<?>> classes = reflections.getSubTypesOf(Object.class);
+        try (ScanResult result = new ClassGraph()
+            .enableClassInfo()
+            .enableSystemJarsAndModules()
+            .addClassLoader(classLoader)
+            .acceptPackages(packageName)
+            .scan()) {
 
-        return classes;
-    }
+            for (var info : result.getAllClasses()) {
+                try {
+                    var clazz = Class.forName(info.getName());
+                    res.add(clazz);
+                } catch (ClassNotFoundException ignored) {}
+            }
+        };
 
-    public Set<Class<?>> getAllAvailableClasses(){
-        Reflections reflections = new Reflections(new ConfigurationBuilder()
-                .setScanners(new SubTypesScanner(false /* don't exclude Object.class */), new ResourcesScanner())
-                .setUrls(urls));
-
-        Set<Class<?>> classes = reflections.getSubTypesOf(Object.class);
-
-        return classes;
+        return res;
     }
 
   public Map<String, Integer> getClassNames(String packageName){

src/main/java/de/dhbwstuttgart/exceptions/UnifyCancelException.java

@@ -0,0 +1,11 @@
+package de.dhbwstuttgart.exceptions;
+
+
+/**
+ * Eine Runtime Exception, die für den Fall genutzt wird, dass eine Unifikation abgebrochen wird.
+ * Durch das Werfen einer Exception können Abbrüche auch aus Methodenaufrufen heraus
+ * geprüft werden, da zuvor nur ein return X; stattfinden würde.
+ */
+public class UnifyCancelException extends RuntimeException {
+
+}

src/main/java/de/dhbwstuttgart/parser/JavaTXParser.java

@@ -7,6 +7,7 @@ import de.dhbwstuttgart.parser.antlr.Java17Parser;
 import de.dhbwstuttgart.parser.scope.JavaClassRegistry;
 import de.dhbwstuttgart.syntaxtree.SourceFile;
 
+import de.dhbwstuttgart.util.Logger;
 import org.antlr.v4.runtime.CharStream;
 import org.antlr.v4.runtime.CharStreams;
 import org.antlr.v4.runtime.CommonTokenStream;
@@ -17,6 +18,9 @@ import java.util.ArrayList;
 import java.util.List;
 
 public class JavaTXParser {
+
+    public static Logger logger = new Logger("Parser");
+
     public static Java17Parser.SourceFileContext parse(File source) throws IOException, java.lang.ClassNotFoundException {
         InputStream stream = new FileInputStream(source);
         // DEPRECATED: ANTLRInputStream input = new ANTLRInputStream(stream);

src/main/java/de/dhbwstuttgart/parser/SourceLoc.java

@@ -1,4 +1,25 @@
 package de.dhbwstuttgart.parser;
 
-public record SourceLoc(String file, int line) {
+import de.dhbwstuttgart.server.packet.dataContainers.ISerializableData;
+import de.dhbwstuttgart.server.packet.dataContainers.KeyStorage;
+import de.dhbwstuttgart.server.packet.dataContainers.serialized.SerialMap;
+
+public record SourceLoc(String file, int line) implements ISerializableData {
+
+
+  @Override
+  public SerialMap toSerial(KeyStorage keyStorage) {
+    var serialized = new SerialMap();
+    serialized.put("file", file);
+    serialized.put("line", line);
+    return serialized;
+  }
+
+  public static SourceLoc fromSerial(SerialMap data) {
+    return new SourceLoc(
+      data.getValue("file").getOf(String.class),
+      data.getValue("line").getOf(Integer.class)
+    );
+  }
+
 }

src/main/java/de/dhbwstuttgart/parser/SyntaxTreeGenerator/FCGenerator.java

@@ -12,6 +12,7 @@ import de.dhbwstuttgart.syntaxtree.factory.ASTFactory;
 import de.dhbwstuttgart.syntaxtree.factory.UnifyTypeFactory;
 import de.dhbwstuttgart.syntaxtree.type.*;
 import de.dhbwstuttgart.typeinference.constraints.Pair;
+import de.dhbwstuttgart.typeinference.unify.PlaceholderRegistry;
 import de.dhbwstuttgart.typeinference.unify.model.*;
 
 import java.util.*;
@@ -26,16 +27,21 @@ public class FCGenerator {
      *
      * @param availableClasses - Alle geparsten Klassen
      */
-    public static Set<UnifyPair> toUnifyFC(JavaTXCompiler compiler, Collection<ClassOrInterface> availableClasses, ClassLoader classLoader) throws ClassNotFoundException {
-        return toFC(availableClasses, classLoader).stream().map(t -> UnifyTypeFactory.convert(compiler, t)).collect(Collectors.toSet());
+    public static Set<UnifyPair> toUnifyFC(JavaTXCompiler compiler, Collection<ClassOrInterface> availableClasses, ClassLoader classLoader, PlaceholderRegistry placeholderRegistry) throws ClassNotFoundException {
+        return toFC(
+          availableClasses,
+          classLoader,
+          placeholderRegistry
+        ).stream().map(t -> UnifyTypeFactory.convert(compiler, t, placeholderRegistry))
+          .collect(Collectors.toSet());
     }
 
-    public static Set<Pair> toFC(Collection<ClassOrInterface> availableClasses, ClassLoader classLoader) throws ClassNotFoundException {
+    public static Set<Pair> toFC(Collection<ClassOrInterface> availableClasses, ClassLoader classLoader, PlaceholderRegistry placeholderRegistry) throws ClassNotFoundException {
         HashSet<Pair> pairs = new HashSet<>();
         //PL 2018-09-18: gtvs vor die for-Schleife gezogen, damit immer die gleichen Typeplaceholder eingesetzt werden.
         HashMap<String, RefTypeOrTPHOrWildcardOrGeneric> gtvs = new HashMap<>();
         for(ClassOrInterface cly : availableClasses){
-        	List<Pair> newPairs = getSuperTypes(cly, availableClasses, gtvs, classLoader);
+        	List<Pair> newPairs = getSuperTypes(cly, availableClasses, gtvs, classLoader, placeholderRegistry);
             pairs.addAll(newPairs);
             
             //For all Functional Interfaces FI: FunN$$<... args auf dem Functional Interface ...> <. FI is added to FC 
@@ -75,8 +81,13 @@ public class FCGenerator {
      * @param forType
      * @return
      */
-    private static List<Pair> getSuperTypes(ClassOrInterface forType, Collection<ClassOrInterface> availableClasses, ClassLoader classLoader) throws ClassNotFoundException {
-        return getSuperTypes(forType, availableClasses, new HashMap<>(), classLoader);
+    private static List<Pair> getSuperTypes(
+      ClassOrInterface forType,
+      Collection<ClassOrInterface> availableClasses,
+      ClassLoader classLoader,
+      PlaceholderRegistry placeholderRegistry
+    ) throws ClassNotFoundException {
+        return getSuperTypes(forType, availableClasses, new HashMap<>(), classLoader, placeholderRegistry);
     }
 
     /**
@@ -87,8 +98,13 @@ public class FCGenerator {
      * @return
      * @throws ClassNotFoundException
      */
-    private static List<Pair> getSuperTypes(ClassOrInterface forType, Collection<ClassOrInterface> availableClasses,
-                                            HashMap<String, RefTypeOrTPHOrWildcardOrGeneric> gtvs, ClassLoader classLoader) throws ClassNotFoundException {
+    private static List<Pair> getSuperTypes(
+      ClassOrInterface forType,
+      Collection<ClassOrInterface> availableClasses,
+      HashMap<String, RefTypeOrTPHOrWildcardOrGeneric> gtvs,
+      ClassLoader classLoader,
+      PlaceholderRegistry placeholderRegistry
+    ) throws ClassNotFoundException {
         List<RefTypeOrTPHOrWildcardOrGeneric> params = new ArrayList<>();
         //Die GTVs, die in forType hinzukommen:
         HashMap<String, RefTypeOrTPHOrWildcardOrGeneric> newGTVs = new HashMap<>();
@@ -147,7 +163,7 @@ public class FCGenerator {
             if(superClass.getClassName().equals(ASTFactory.createObjectClass().getClassName())){
                 superTypes = Arrays.asList(new Pair(ASTFactory.createObjectType(), ASTFactory.createObjectType(), PairOperator.SMALLER));
             }else{
-                superTypes = getSuperTypes(superClass, availableClasses, newGTVs, classLoader);
+                superTypes = getSuperTypes(superClass, availableClasses, newGTVs, classLoader, placeholderRegistry);
             }
 
             retList.add(ret);
@@ -158,7 +174,8 @@ public class FCGenerator {
     }
 
     /**
-     * Tauscht die GTVs in einem Typ gegen die entsprechenden Typen in der übergebenen Map aus.
+     * Tauscht die GTVs in einem Typ gegen die entsprechenden Typen in der übergebenen Map aus auf der direkten Argumentebene.
+     * Hier sind keine Wildcards zulässig
      */
     private static class TypeExchanger implements TypeVisitor<RefTypeOrTPHOrWildcardOrGeneric>{
 
@@ -172,7 +189,7 @@ public class FCGenerator {
         public RefTypeOrTPHOrWildcardOrGeneric visit(RefType refType) {
             List<RefTypeOrTPHOrWildcardOrGeneric> params = new ArrayList<>();
             for(RefTypeOrTPHOrWildcardOrGeneric param : refType.getParaList()){
-                params.add(param.acceptTV(this));
+                params.add(param.acceptTV(new TypeExchangerInner(gtvs)));
             }
             RefTypeOrTPHOrWildcardOrGeneric ret = new RefType(refType.getName(), params, new NullToken());
             return ret;
@@ -201,4 +218,51 @@ public class FCGenerator {
         }
 
     }
+    
+    /**
+     * Tauscht die GTVs in einem Typ gegen die entsprechenden Typen in der übergebenen Map aus auf den Argumenten der Argumente.
+     * Hier sind Wildcards zulässig
+     */
+    private static class TypeExchangerInner implements TypeVisitor<RefTypeOrTPHOrWildcardOrGeneric>{
+
+        private final HashMap<String, RefTypeOrTPHOrWildcardOrGeneric> gtvs;
+
+        TypeExchangerInner(HashMap<String, RefTypeOrTPHOrWildcardOrGeneric> gtvs){
+            this.gtvs = gtvs;
+        }
+
+        @Override
+        public RefTypeOrTPHOrWildcardOrGeneric visit(RefType refType) {
+            List<RefTypeOrTPHOrWildcardOrGeneric> params = new ArrayList<>();
+            for(RefTypeOrTPHOrWildcardOrGeneric param : refType.getParaList()){
+                params.add(param.acceptTV(this));
+            }
+            RefTypeOrTPHOrWildcardOrGeneric ret = new RefType(refType.getName(), params, new NullToken());
+            return ret;
+        }
+
+        @Override
+        public RefTypeOrTPHOrWildcardOrGeneric visit(SuperWildcardType superWildcardType) {
+            return superWildcardType;
+        }
+
+        @Override
+        public RefTypeOrTPHOrWildcardOrGeneric visit(TypePlaceholder typePlaceholder) {
+            throw new DebugException("Dieser Fall darf nicht auftreten");
+        }
+
+        @Override
+        public RefTypeOrTPHOrWildcardOrGeneric visit(ExtendsWildcardType extendsWildcardType) {
+            return extendsWildcardType;
+        }
+
+        @Override
+        public RefTypeOrTPHOrWildcardOrGeneric visit(GenericRefType genericRefType) {
+            if(! gtvs.containsKey(genericRefType.getParsedName()))
+                throw new DebugException("Dieser Fall darf nicht auftreten");
+            return gtvs.get(genericRefType.getParsedName());
+        }
+
+    }
+    
 }

src/main/java/de/dhbwstuttgart/parser/SyntaxTreeGenerator/StatementGenerator.java

@@ -1,5 +1,6 @@
 package de.dhbwstuttgart.parser.SyntaxTreeGenerator;
 
+import de.dhbwstuttgart.parser.JavaTXParser;
 import java.lang.reflect.Modifier;
 import java.util.ArrayList;
 import java.util.Arrays;
@@ -14,6 +15,8 @@ import de.dhbwstuttgart.core.JavaTXCompiler;
 import de.dhbwstuttgart.syntaxtree.*;
 import de.dhbwstuttgart.syntaxtree.statement.*;
 import de.dhbwstuttgart.syntaxtree.type.Void;
+import de.dhbwstuttgart.target.tree.expression.TargetUnaryOp;
+import de.dhbwstuttgart.target.generate.StatementToTargetExpression;
 import org.antlr.v4.runtime.Token;
 
 import de.dhbwstuttgart.exceptions.NotImplementedException;
@@ -101,7 +104,6 @@ import de.dhbwstuttgart.parser.scope.JavaClassRegistry;
 import de.dhbwstuttgart.syntaxtree.type.RefType;
 import de.dhbwstuttgart.syntaxtree.type.RefTypeOrTPHOrWildcardOrGeneric;
 import de.dhbwstuttgart.syntaxtree.type.TypePlaceholder;
-import org.stringtemplate.v4.ST;
 
 public class StatementGenerator {
 
@@ -125,7 +127,7 @@ public class StatementGenerator {
         this.superClass = superType;
     }
 
-    public ParameterList convert(Java17Parser.FormalParameterListContext formalParameterListContext) {
+    public ParameterList convert(Java17Parser.FormalParameterListContext formalParameterListContext, boolean methodparameters) {
         List<Pattern> ret = new ArrayList<>();
         List<Java17Parser.FormalParameterContext> fps = new ArrayList<>();
         if (Objects.isNull(formalParameterListContext))
@@ -147,10 +149,12 @@ public class StatementGenerator {
                 if (fp.typeType() != null) {
                     type = TypeGenerator.convert(fp.typeType(), reg, generics);
                 } else {
-                    type = TypePlaceholder.fresh(fp.getStart());
+                	type = methodparameters?
+                			TypePlaceholder.fresh(fp.getStart(), 1, false) 
+                			: TypePlaceholder.fresh(fp.getStart());
                 }
                 ret.add(new FormalParameter(paramName, type, fp.getStart()));
-                localVars.put(paramName, type);
+                localVars.put(paramName, type); 
             }
         }
         return new ParameterList(ret, ret.get(0).getOffset());
@@ -256,7 +260,7 @@ public class StatementGenerator {
             ret.setStatement();
             return ret;
         default:
-            System.out.println(stmt.getClass());
+            JavaTXParser.logger.info(stmt.getClass());
             throw new NotImplementedException();
         }
     }
@@ -439,6 +443,7 @@ public class StatementGenerator {
     }
 
     private Pattern convert(PatternContext pattern) {
+
         return switch (pattern) {
         case PPatternContext pPattern -> {
             yield convert(pPattern.primaryPattern());
@@ -453,30 +458,36 @@ public class StatementGenerator {
     }
 
     private FormalParameter convert(PrimaryPatternContext pPattern) {
+
         switch (pPattern) {
         case TPatternContext tPattern:
             TypePatternContext typePattern = tPattern.typePattern();
             var text = typePattern.identifier().getText();
-            var type = TypeGenerator.convert(typePattern.typeType(), reg, generics);
+            var type = typePattern.typeType() == null ? TypePlaceholder.fresh(pPattern.getStart()) :  TypeGenerator.convert(typePattern.typeType(), reg, generics);
             localVars.put(text, type);
             return new FormalParameter(text, type, typePattern.getStart());
         case RPatternContext rPattern:
             RecordPatternContext recordPattern = rPattern.recordPattern();
             return convert(recordPattern);
-        default:
-            throw new NotImplementedException();
+            case Java17Parser.LPatternContext patternContext: return new LiteralPattern(TypePlaceholder.fresh(patternContext.start), convert(patternContext.literal().get(0)), patternContext.start);
+
+            default:
+                throw new NotImplementedException();
 
         }
     }
 
     private RecordPattern convert(RecordPatternContext recordPatternCtx) {
-        List<PatternContext> subPatternCtx = recordPatternCtx.recordStructurePattern().recordComponentPatternList().pattern();
+        var cpl = recordPatternCtx.recordStructurePattern().recordComponentPatternList();
+        List<PatternContext> subPatternCtx = cpl == null ? List.of() : cpl.pattern();
         List<Pattern> subPattern = subPatternCtx.stream().map(this::convert).collect(Collectors.toList());
         IdentifierContext identifierCtx = recordPatternCtx.identifier();
         var text = (identifierCtx != null) ? identifierCtx.getText() : null;
-        var type = TypeGenerator.convert(recordPatternCtx.typeType(), reg, generics);
+        //Hier evtl. Typ anpassen -> wenn kein Typ bekannt ist push neuen Typ auf Hashtable
+        var type = recordPatternCtx.typeType() == null ? TypePlaceholder.fresh(recordPatternCtx.getStart()) : TypeGenerator.convert(recordPatternCtx.typeType(), reg, generics);
         if (text != null) localVars.put(text, type);
-        return new RecordPattern(subPattern, text, type, recordPatternCtx.getStart());
+        var ret = new RecordPattern(subPattern, text, type, recordPatternCtx.getStart());
+        return ret;
     }
 
     private Statement convert(Java17Parser.WhileloopContext stmt) {
@@ -583,7 +594,7 @@ public class StatementGenerator {
             initValue = convert(varDecl.variableInitializer().expression());
         }
         var fieldEntry = fields.get(name.getText());
-        return (new Assign(new AssignToField(new FieldVar(new This(varDecl.getStart()), (fieldEntry.modifiers() & Modifier.STATIC) != 0, name.getText(), type, varDecl.getStart())), initValue, name.getStart()));
+        return (new Assign(new AssignToField(new FieldVar(new This(varDecl.getStart()), name.getText(), type, varDecl.getStart())), initValue, name.getStart()));
     }
 
     private Statement convert(Java17Parser.BreakstmtContext stmt) {
@@ -597,8 +608,12 @@ public class StatementGenerator {
     }
 
     private Statement convert(Java17Parser.ContinuestmtContext stmt) {
-        // TODO
-        throw new NotImplementedException();
+        Token offset = stmt.getStart();
+        if (!Objects.isNull(stmt.identifier())) {
+            return new Continue(localVars.get(stmt.identifier().getText()), offset);
+        } else {
+            return new Continue(TypePlaceholder.fresh(offset), offset);
+        }
     }
 
     private Statement convert(Java17Parser.SemistmtContext stmt) {
@@ -693,7 +708,7 @@ public class StatementGenerator {
         if (!Objects.isNull(expr.methodCall())) {
             return convert(expr.methodCall(), expr.expression(), offset);
         } else if (!Objects.isNull(expr.identifier())) {
-            return generateLocalOrFieldVarOrClassName(expr.getText(), offset);
+            return new FieldVar(convert(expr.expression()), expr.identifier().getText(), TypePlaceholder.fresh(expr.identifier().start), offset);
         } else {
             // Für alle anderen Optionen, wie Feldzugriff, Aufrufe von super oder explizite
             // generische Invokationen
@@ -769,62 +784,25 @@ public class StatementGenerator {
 
     /**
      * Der Parser kann nicht zwischen einer lokalen Variable, einem Feldzugriff und einer Klassenangabe unterscheiden.
-     * 
+     *
      * @param expression
      * @param offset
      * @return
      */
     private Expression generateLocalOrFieldVarOrClassName(String expression, Token offset) {
-        String[] parts = expression.split("\\.");
-        if (parts.length < 2) {
-            // Check for localVar:
-            if (localVars.get(expression) != null) {
-                return new LocalVar(expression, localVars.get(expression), offset);
-            } else if (fields.get(expression) != null) {// PL 2018-11-01 fields eingefuegt, damit die fields immer die
-                // gleiche TPH bekommen
-                var field = fields.get(expression);
-                return new FieldVar(new This(offset), Modifier.isStatic(field.modifiers()), expression, fields.get(expression).type(), offset);
-            } else if (reg.contains(expression)) {
-                return generateStaticClassName(expression, offset);
-            } else {
-                // lokale Variable wurde ohne "var"-Keyword deklariert und direkt mit Wert versehen
-                localVars.put(expression, TypePlaceholder.fresh(offset));
-                return new LocalVar(expression, localVars.get(expression), offset);
-            }
-        }
-        return generateFieldVarOrClassname(expression, offset);
-    }
-
-    private Expression generateFieldVarOrClassname(String expression, Token offset) {
-        String[] parts = expression.split("\\.");
-        String whole = "";
-        Expression receiver = null;
-        for (String part : parts) {
-            whole += part;
-            // Check for Classname:
-            if (reg.contains(whole)) {
-                receiver = generateStaticClassName(whole, offset);
-            }
-            whole += ".";
-        }
-        var fieldName = parts[parts.length - 1];
-
-        var isStatic = false;
-        if (parts.length < 2 || parts[0].contentEquals("this")) {
-            receiver = new This(offset);
-            isStatic = Modifier.isStatic(fields.get(fieldName).modifiers());
-        } else if (parts[0].contentEquals("super")) {
-            receiver = new Super(TypePlaceholder.fresh(offset), offset);
-            isStatic = Modifier.isStatic(compiler.getClass(new JavaClassName(superClass.getName().toString())).getField(fieldName).orElseThrow().modifier);
-        } else if (receiver == null) { // Handelt es sich um keinen Statischen Klassennamen:
-            String part = expression.substring(0, expression.length() - (1 + parts[parts.length - 1].length()));
-            receiver = generateLocalOrFieldVarOrClassName(part, offset);
+        // Check for localVar:
+        if (localVars.get(expression) != null) {
+            return new LocalVar(expression, localVars.get(expression), offset);
+        } else if (fields.get(expression) != null) {// PL 2018-11-01 fields eingefuegt, damit die fields immer die
+            // gleiche TPH bekommen
+            return new FieldVar(new This(offset), expression, fields.get(expression).type(), offset);
+        } else if (reg.contains(expression)) {
+            return generateStaticClassName(expression, offset);
         } else {
-            StaticClassName cname = (StaticClassName) receiver;
-            var javaClassName = reg.getName(cname.getType().toString());
-            isStatic = Modifier.isStatic(compiler.getClass(javaClassName).getField(fieldName).orElseThrow().modifier);
+            // lokale Variable wurde ohne "var"-Keyword deklariert und direkt mit Wert versehen
+            localVars.put(expression, TypePlaceholder.fresh(offset));
+            return new LocalVar(expression, localVars.get(expression), offset);
         }
-        return new FieldVar(receiver, isStatic, fieldName, TypePlaceholder.fresh(offset), offset);
     }
 
     private Expression convert(Java17Parser.ArrayaccessexpressionContext arrayaccess) {
@@ -860,10 +838,8 @@ public class StatementGenerator {
     private Statement convert(AssignexpressionContext expr) {
         switch (expr.bop.getText()) {
         case "=":
-            ExpressionContext leftside = expr.expression(0);
-            AssignLeftSide leftHandSide = convert(leftside.getText(), leftside.getStart());
-            Statement ret = new Assign(leftHandSide, convert(expr.expression(1)), expr.getStart());
-            return ret;
+            AssignLeftSide leftHandSide = convertAssignLHS(convert(expr.expression(0)));
+            return new Assign(leftHandSide, convert(expr.expression(1)), expr.getStart());
         case "+=":
         case "-=":
         case "*=":
@@ -880,8 +856,8 @@ public class StatementGenerator {
         }
     }
 
-    private AssignLeftSide convert(String leftHandSide, Token start) {
-        Expression leftSide = generateLocalOrFieldVarOrClassName(leftHandSide, start);
+    private AssignLeftSide convertAssignLHS(Expression expr) {
+        Expression leftSide = expr;
         if (leftSide instanceof FieldVar)
             return new AssignToField((FieldVar) leftSide);
         else if (leftSide instanceof LocalVar)
@@ -1094,7 +1070,7 @@ public class StatementGenerator {
             }
             params = new ParameterList(parameterList, lambdaParams.getStart());
         } else if (lambdaParams.formalParameterList() != null) {
-            params = convert(lambdaParams.formalParameterList());
+            params = convert(lambdaParams.formalParameterList(), false);
             // }else if( lambdaParams.inferredFormalParameterList != null){
         } else if (!Objects.isNull(lambdaParams.lambdaLVTIList())) {
             List<Pattern> parameterList = new ArrayList<>();
@@ -1124,9 +1100,9 @@ public class StatementGenerator {
             block = lambdaGenerator.convert(expression.lambdaBody().block(), true);
         }
         List<RefTypeOrTPHOrWildcardOrGeneric> funNParams = new ArrayList<>();
-        funNParams.add(TypePlaceholder.fresh(expression.getStart()));// ret-Type
+        funNParams.add(TypePlaceholder.fresh(expression.getStart(), -1, false));// ret-Type
         params.getFormalparalist().forEach(formalParameter -> // Für jeden Parameter einen TPH anfügen:
-        funNParams.add(TypePlaceholder.fresh(expression.getStart())));
+        	funNParams.add(TypePlaceholder.fresh(expression.getStart(), 1, false)));
         RefTypeOrTPHOrWildcardOrGeneric lambdaType = TypePlaceholder.fresh(expression.getStart());
         // RefType lambdaType = new
         // RefType(reg.getName("Fun"+params.getFormalparalist().size()),

src/main/java/de/dhbwstuttgart/parser/SyntaxTreeGenerator/SyntaxTreeGenerator.java

@@ -71,10 +71,6 @@ import de.dhbwstuttgart.syntaxtree.type.RefType;
 import de.dhbwstuttgart.syntaxtree.type.RefTypeOrTPHOrWildcardOrGeneric;
 import de.dhbwstuttgart.syntaxtree.type.TypePlaceholder;
 import de.dhbwstuttgart.syntaxtree.type.Void;
-import de.dhbwstuttgart.typeinference.constraints.GenericsResolver;
-import javassist.compiler.SyntaxError;
-
-import javax.swing.text.html.Option;
 
 public class SyntaxTreeGenerator {
   private JavaClassRegistry reg;
@@ -258,7 +254,10 @@ public class SyntaxTreeGenerator {
     List<RefType> implementedInterfaces = new ArrayList<>();
     List<Pattern> constructorParameters = new ArrayList<>();
     List<Statement> constructorStatements = new ArrayList<>();
-    for (RecordComponentContext component : recordDeclaration.recordHeader().recordComponentList().recordComponent()) {
+
+    List<Java17Parser.RecordComponentContext> components = recordDeclaration.recordHeader().recordComponentList() != null ?
+              recordDeclaration.recordHeader().recordComponentList().recordComponent(): List.of();
+    for (RecordComponentContext component : components) {
       int fieldmodifiers = allmodifiers.get("private") + allmodifiers.get("final");
       String fieldname = component.identifier().getText();
       Token fieldoffset = component.getStart();
@@ -270,7 +269,7 @@ public class SyntaxTreeGenerator {
       }
       fielddecl.add(new Field(fieldname, fieldtype, fieldmodifiers, fieldoffset));
       constructorParameters.add(new FormalParameter(fieldname, fieldtype, fieldoffset));
-      FieldVar fieldvar = new FieldVar(new This(offset), false, fieldname, fieldtype, fieldoffset);
+      FieldVar fieldvar = new FieldVar(new This(offset), fieldname, fieldtype, fieldoffset);
       constructorStatements.add(new Assign(new AssignToField(fieldvar), new LocalVar(fieldname, fieldtype, fieldoffset), offset));
       Statement returnStatement = new Return(fieldvar, offset);
       methods.add(new Method(allmodifiers.get("public"), fieldname, fieldtype, new ParameterList(new ArrayList<>(), offset), new Block(Arrays.asList(returnStatement), offset), new GenericDeclarationList(new ArrayList<>(), offset), offset));
@@ -394,12 +393,12 @@ public class SyntaxTreeGenerator {
     if (!Objects.isNull(ctx.EXTENDS())) {
       extendedInterfaces.addAll(convert(ctx.typeList(0), generics));
     }
-    List<RefType> permittedSubtypes = new ArrayList<>();
+    List<RefType> permittedSubtypes = null;
     // Ist Bit für 'sealed'-Modifier gesetzt
     if ((modifiers & 4096) != 0) {
       if (!Objects.isNull(ctx.PERMITS())) {
         // permitted subtypes sind letzte typeList (siehe Grammatikregel 'classDeclaration')
-        permittedSubtypes.addAll(convert(ctx.typeList(ctx.typeList().size() - 1), generics));
+        permittedSubtypes = new ArrayList<>(convert(ctx.typeList(ctx.typeList().size() - 1), generics));
       } else {
         // falls sealed modifier ohne 'permits'-List oder umgekehrt
         throw new NotImplementedException("Invalid sealed class declaration");
@@ -436,7 +435,7 @@ public class SyntaxTreeGenerator {
       }
     }
     StatementGenerator stmtgen = new StatementGenerator(superClass, compiler, reg, generics, fields, new HashMap<>());
-    ParameterList paramlist = stmtgen.convert(bodydeclaration.formalParameters().formalParameterList());
+    ParameterList paramlist = stmtgen.convert(bodydeclaration.formalParameters().formalParameterList(), true);
     MethodBodyContext body = bodydeclaration.methodBody();
     Block block = null;
     if (!(body instanceof EmptymethodContext)) {
@@ -533,7 +532,7 @@ public class SyntaxTreeGenerator {
 
     RefTypeOrTPHOrWildcardOrGeneric retType;
     if (Objects.isNull(header.refType())) {
-      retType = TypePlaceholder.fresh(header.getStart());
+      retType = TypePlaceholder.fresh(header.getStart(), -1, false);
     } else {
       if (header.refType() instanceof RefType2Context reftype) {
         retType = TypeGenerator.convert(reftype.typeType(), reg, generics);
@@ -542,7 +541,7 @@ public class SyntaxTreeGenerator {
       }
     }
     StatementGenerator stmtgen = new StatementGenerator(superClass, compiler, reg, localgenerics, fields, new HashMap<>());
-    ParameterList paramlist = stmtgen.convert(header.formalParameters().formalParameterList());
+    ParameterList paramlist = stmtgen.convert(header.formalParameters().formalParameterList(), true);
     MethodBodyContext body = methoddeclaration.methodBody();
     Block block = null;
     if (body instanceof EmptymethodContext emptymethod) {
@@ -582,7 +581,7 @@ public class SyntaxTreeGenerator {
     }
     RefTypeOrTPHOrWildcardOrGeneric retType = TypeGenerator.convertTypeName(name, constructordeclaration.getStart(), reg, localgenerics);
     StatementGenerator stmtgen = new StatementGenerator(superClass, compiler, reg, localgenerics, fields, new HashMap<>());
-    ParameterList paramlist = stmtgen.convert(constructordeclaration.formalParameters().formalParameterList());
+    ParameterList paramlist = stmtgen.convert(constructordeclaration.formalParameters().formalParameterList(), true);
     Block block = prepareBlock(stmtgen.convert(constructordeclaration.constructorBody, true), superClass);
     return new Constructor(modifiers, name, retType, paramlist, block, gtvDeclarations, constructordeclaration.getStart());
   }
@@ -595,7 +594,7 @@ public class SyntaxTreeGenerator {
     } else {
       // PL 2019-12-06: variableDeclaratorList() eingefuegt, um als Token nicht die
       // Modifier zu bekommen
-      fieldType = TypePlaceholder.fresh(fieldDeclContext.variableDeclarators().getStart());
+      fieldType = TypePlaceholder.fresh(fieldDeclContext.variableDeclarators().getStart(), -1, false);
     }
     for (Java17Parser.VariableDeclaratorContext varDecl : fieldDeclContext.variableDeclarators().variableDeclarator()) {
       String fieldName = varDecl.variableDeclaratorId().getText();

src/main/java/de/dhbwstuttgart/parser/SyntaxTreeGenerator/TypeGenerator.java

@@ -74,7 +74,7 @@ public class TypeGenerator {
                 throw new NotImplementedException();
             }
         } else if (!typeContext.LBRACK().isEmpty()) { // ArrayType über eckige Klammer prüfen
-            // System.out.println(unannTypeContext.getText());
+            // JavaTXParser.logger.info(unannTypeContext.getText());
             throw new NotImplementedException();
         }
         /*

src/main/java/de/dhbwstuttgart/parser/scope/JavaClassRegistry.java

@@ -7,7 +7,7 @@ import java.util.*;
 /**
  * Speichert die Klassen f<>r einen bestimmten Projektscope
  */
-public class JavaClassRegistry {
+public class JavaClassRegistry{
     final Map<JavaClassName, Integer> existingClasses = new HashMap<>();
 
     public JavaClassRegistry(Map<String, Integer> initialNames) {
@@ -22,6 +22,10 @@ public class JavaClassRegistry {
         }
     }
 
+    public Set<JavaClassName> getAllClassNames(){
+        return existingClasses.keySet();
+    }
+
     public void addName(String className, int numberOfGenerics) {
         existingClasses.put(new JavaClassName(className), numberOfGenerics);
     }

src/main/java/de/dhbwstuttgart/server/ServerTaskLogger.java

@@ -0,0 +1,41 @@
+package de.dhbwstuttgart.server;
+
+import de.dhbwstuttgart.util.Logger;
+import java.time.LocalDateTime;
+import java.time.format.DateTimeFormatter;
+import org.java_websocket.WebSocket;
+
+public class ServerTaskLogger extends Logger {
+
+  private final WebSocket webSocket;
+  private final SocketServer socketServer;
+  private final LogLevel customLogLevel;
+
+  public ServerTaskLogger(WebSocket webSocket, SocketServer socketServer, LogLevel customLogLevel) {
+    this.webSocket = webSocket;
+    this.socketServer = socketServer;
+    this.customLogLevel = customLogLevel;
+  }
+
+  @Override
+  public boolean isLogLevelActive(LogLevel logLevel) {
+    return logLevel.isHigherOrEqualTo(customLogLevel);
+  }
+
+  @Override
+  protected void print(String s, LogLevel logLevel) {
+    String coloredPrefix = this.getPrefix(logLevel);
+    if (logLevel.isHigherOrEqualTo(LogLevel.ERROR)) {
+      socketServer.sendError(webSocket, coloredPrefix + s, false);
+    }
+    else {
+      socketServer.sendMessage(webSocket, coloredPrefix + s);
+    }
+  }
+
+  @Override
+  protected void write(String s) {
+    // under no circumstances write anything to a file
+  }
+
+}

src/main/java/de/dhbwstuttgart/server/SocketClient.java

@@ -0,0 +1,202 @@
+package de.dhbwstuttgart.server;
+
+import com.fasterxml.jackson.core.JsonProcessingException;
+import de.dhbwstuttgart.core.ConsoleInterface;
+import de.dhbwstuttgart.server.packet.IClientToServerPacket;
+import de.dhbwstuttgart.server.packet.IPacket;
+import de.dhbwstuttgart.server.packet.IServerToClientPacket;
+import de.dhbwstuttgart.server.packet.PacketContainer;
+import de.dhbwstuttgart.server.packet.UnifyRequestPacket;
+import de.dhbwstuttgart.server.packet.UnifyResultPacket;
+import de.dhbwstuttgart.typeinference.constraints.ConstraintSet;
+import de.dhbwstuttgart.typeinference.constraints.Pair;
+import de.dhbwstuttgart.typeinference.result.ResultSet;
+import de.dhbwstuttgart.typeinference.unify.UnifyContext;
+import de.dhbwstuttgart.typeinference.unify.model.FiniteClosure;
+import de.dhbwstuttgart.typeinference.unify.model.UnifyPair;
+import de.dhbwstuttgart.util.Logger;
+import java.net.URI;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.CountDownLatch;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+import org.java_websocket.client.WebSocketClient;
+import org.java_websocket.enums.ReadyState;
+import org.java_websocket.handshake.ServerHandshake;
+
+
+/**
+ * The Client-side of the websocket
+ */
+public class SocketClient extends WebSocketClient {
+
+  public static Logger logger = new Logger("SocketClient");
+
+  /**
+   * The singleton object
+   */
+  private static SocketClient socketClient = null;
+
+  /**
+   * List of futures that are still waiting to be fulfilled
+   */
+  private final Map<String, SocketFuture<?>> responseFutures = new HashMap<>();
+
+  private SocketClient(String url) {
+    super(
+      URI.create(url), // target url
+      //SocketServer.perMessageDeflateDraft, // enable compression
+      Map.of( // headers
+        "packetProtocolVersion", SocketServer.packetProtocolVersion
+      )
+    );
+
+    // make sure the url is in a valid format
+    final String regex = "^wss?://(\\w+(\\.\\w+)?)*:(\\d+)$";
+    final Matcher matcher = Pattern.compile(regex).matcher(url);
+    if (!matcher.find()) {
+      throw new RuntimeException("Provided string \"" + url + "\" is not a valid server URL! Use pattern ws(s?)://<host.name>:<port>");
+    }
+
+    try {
+      // wait for the connection to be set up
+      this.connectBlocking();
+      // make sure the connection has been established successfully
+      if (this.getReadyState() != ReadyState.OPEN) {
+        throw new RuntimeException("WebSocket Client could not connect to remote host at " + this.uri);
+      }
+    } catch (InterruptedException exception) {
+      throw new RuntimeException(exception);
+    }
+
+    // add a shutdown hook to close the connection when the process ends or is stopped by a SIGINT signal
+    Runtime.getRuntime().addShutdownHook(new Thread(this::close));
+  }
+
+  private SocketClient(String host, int port, boolean secure) throws InterruptedException {
+    this(String.format("%s://%s:%d/", secure ? "wss" : "ws", host, port));
+  }
+
+  /**
+   * Singleton access method, creates one if none is available
+   *
+   * @return The one and only socketClient
+   */
+  private static SocketClient initializeClient() {
+    if (socketClient == null) {
+      socketClient = new SocketClient(ConsoleInterface.unifyServerUrl.get());
+    }
+    return socketClient;
+  }
+
+  /**
+   * Send a packet to the server (connection will be created, if none is found) and return a future
+   * for the response packet
+   */
+  synchronized public static <T extends IServerToClientPacket> SocketFuture<T> execute(IClientToServerPacket<T> packet) {
+    SocketClient client = initializeClient();
+
+    /*
+     * Create a future that will be associated with the packet and eventually completed
+     */
+    SocketFuture<T> future = packet.getFuture();
+    if (!future.isDone()) {
+      client.responseFutures.put(future.futureId, future);
+    }
+
+    /*
+     * Establish connection, if not already done.
+     * Serialize the packet and send it to the server.
+     * Return the future to be handled by the caller.
+     */
+    try {
+      String json = PacketContainer.serialize(packet);
+      client.send(json);
+    } catch (Exception exception) {
+      logger.exception(exception);
+      throw new RuntimeException("Exception occurred in server connection: ", exception);
+    }
+
+    return future;
+  }
+
+  /**
+   * Shortcut for waiting and retrieving the response immediately
+   *
+   * @param packet The packet to send
+   * @param <T>    The type of response packet to await
+   * @return The response packet, once it is received
+   */
+  public static <T extends IServerToClientPacket> T executeAndGet(IClientToServerPacket<T> packet) {
+    return SocketClient.execute(packet).get();
+  }
+
+  /**
+   * Specific client-side implementations to handle incoming packets
+   */
+  protected void handleReceivedPacket(IPacket packet) {
+    if (!(packet instanceof IServerToClientPacket serverToClientPacket)) {
+      System.err.println("Received package of invalid type + " + packet.getClass().getName());
+      this.close();
+      return;
+    }
+
+    serverToClientPacket.onHandle(this.getConnection(), this);
+  }
+
+  /**
+   * Complete a registered future, so it can be handled by whoever executed the creator task
+   *
+   * @param id      The associated id for this future
+   * @param trigger The object triggering the completion
+   */
+  public void completeResponseFuture(String id, IServerToClientPacket trigger) {
+    SocketFuture<?> future = this.responseFutures.remove(id);
+    if (future == null) return;
+    if (!future.accept(trigger)) {
+      throw new RuntimeException("Packet " + trigger.getClass().getName() + " tried to complete future, but was not allowed to");
+    }
+  }
+
+  public static void closeIfOpen() {
+    if (socketClient != null && socketClient.isOpen()) {
+      socketClient.close();
+    }
+  }
+
+  @Override
+  public void onOpen(ServerHandshake handshakedata) {
+    logger.success("Connected to server with status " + handshakedata.getHttpStatus());
+  }
+
+  @Override
+  public void onMessage(String message) {
+    // logger.info("received: " + message);
+    IPacket packet = PacketContainer.deserialize(message);
+    this.handleReceivedPacket(packet);
+  }
+
+  @Override
+  public void onClose(int code, String reason, boolean remote) {
+    logger.info(
+      "Disconnected from server " +
+        "with code " + code + " " +
+        (reason.isEmpty() ? "" : "and reason " + reason + " ") +
+        "(closed by remote: " + remote + ")"
+    );
+
+    if (!this.responseFutures.isEmpty()) {
+      throw new RuntimeException("Server closed before all required tasks were answered");
+    }
+  }
+
+  @Override
+  public void onError(Exception e) {
+    logger.exception(e);
+    throw new RuntimeException(e);
+  }
+
+}

src/main/java/de/dhbwstuttgart/server/SocketFuture.java

@@ -0,0 +1,48 @@
+package de.dhbwstuttgart.server;
+
+import de.dhbwstuttgart.server.packet.IServerToClientPacket;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.UUID;
+import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.ExecutionException;
+
+public class SocketFuture<T extends IServerToClientPacket> extends CompletableFuture<T> {
+
+  public final String futureId = UUID.randomUUID().toString();
+
+  public final List<Class<T>> allowedTriggers;
+
+  public SocketFuture(List<Class<T>> allowedTriggers) {
+    this.allowedTriggers = allowedTriggers;
+  }
+
+  public boolean accept(IServerToClientPacket trigger) {
+    if (this.allowedTriggers.contains(trigger.getClass())) {
+      this.complete((T)trigger);
+      return true;
+    }
+    return false;
+  }
+
+  @Override
+  public T get() {
+    try {
+      return super.get();
+    }
+    catch (InterruptedException | ExecutionException exception) {
+      throw new RuntimeException(exception);
+    }
+  }
+
+  /**
+   * Special case where the future is immediately fulfilled without a response package similar to
+   * <code>CompletableFuture.completedFuture()</code> but without a value
+   */
+  public static <R extends IServerToClientPacket> SocketFuture<R> completedFuture() {
+    SocketFuture<R> dummyFuture = new SocketFuture<>(new ArrayList<>(0));
+    dummyFuture.complete(null);
+    return dummyFuture;
+  }
+
+}

src/main/java/de/dhbwstuttgart/server/SocketServer.java

@@ -0,0 +1,235 @@
+package de.dhbwstuttgart.server;
+
+import com.fasterxml.jackson.core.JsonProcessingException;
+import de.dhbwstuttgart.server.packet.ErrorPacket;
+import de.dhbwstuttgart.server.packet.IClientToServerPacket;
+import de.dhbwstuttgart.server.packet.IPacket;
+import de.dhbwstuttgart.server.packet.MessagePacket;
+import de.dhbwstuttgart.server.packet.PacketContainer;
+import de.dhbwstuttgart.util.Logger;
+import java.net.InetSocketAddress;
+import java.util.Collections;
+import java.util.UUID;
+import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.Executor;
+import java.util.concurrent.Executors;
+import java.util.concurrent.ScheduledExecutorService;
+import java.util.concurrent.SynchronousQueue;
+import java.util.concurrent.ThreadPoolExecutor;
+import java.util.concurrent.TimeUnit;
+import java.util.concurrent.atomic.AtomicInteger;
+import org.java_websocket.WebSocket;
+import org.java_websocket.drafts.Draft;
+import org.java_websocket.drafts.Draft_6455;
+import org.java_websocket.extensions.permessage_deflate.PerMessageDeflateExtension;
+import org.java_websocket.handshake.ClientHandshake;
+import org.java_websocket.server.WebSocketServer;
+
+public class SocketServer extends WebSocketServer {
+
+  public static Logger logger = new Logger("SocketServer");
+  public static final int maxTasksPerSession = 100;
+  private static boolean serverRunning = false;
+
+  /**
+   * Increase this every time a breaking change to the server communication is done.
+   * This will prevent errors when the server version and client version do not match.
+   */
+  public static final String packetProtocolVersion = "1";
+
+  // create an executor for tasks that will always keep at least one task around
+  private final ThreadPoolExecutor taskExecutor = new ThreadPoolExecutor(1, Integer.MAX_VALUE,60L, TimeUnit.SECONDS, new SynchronousQueue<>());
+  // create an executor for scheduling timeouts
+  private final ScheduledExecutorService timeoutExecutor = Executors.newSingleThreadScheduledExecutor();
+
+  public SocketServer(int port) {
+    super(new InetSocketAddress(port));
+    this.setConnectionLostTimeout(30);
+
+    serverRunning = true;
+    // add a shutdown hook to close all connections when the process ends or is stopped by a SIGINT signal
+    Runtime.getRuntime().addShutdownHook(new Thread(this::onShutdown));
+  }
+
+  public static boolean isServerRunning() {
+    return serverRunning;
+  }
+
+  private void onShutdown() {
+    serverRunning = false;
+    try {
+      for (var webSocket : this.getConnections()) {
+        this.sendError(webSocket, "Sorry, i am shutting down. You are now on your own, good Luck!", true);
+        webSocket.close();
+      }
+      this.stop();
+      taskExecutor.shutdown();
+      timeoutExecutor.shutdown();
+    } catch (InterruptedException exception) {
+      // we are shutting down anyway
+    }
+  }
+
+  @Override
+  public void onOpen(WebSocket webSocket, ClientHandshake clientHandshake) {
+    String ppv = clientHandshake.getFieldValue("packetProtocolVersion");
+    if (!ppv.equals(packetProtocolVersion)) {
+      this.sendError(webSocket,
+        "Mismatch in packet protocol version! Client (you): \"" + ppv + "\" and Server (me): \"" + packetProtocolVersion + "\"",
+        true
+      );
+      webSocket.close(1);
+      return;
+    }
+
+    SocketData socketData = new SocketData(webSocket);
+    logger.info("New connection: " + socketData.id + " (with ppv " + ppv + ")");
+
+    try {
+      sendMessage(webSocket, "Welcome to the server!");
+
+      // wait 10 seconds for the client to send a task and close the connection if nothing has been received until then
+      final int secondsUntilTimeout = 10;
+      timeoutExecutor.schedule(() -> {
+          if (webSocket.<SocketData>getAttachment().totalTasks.get() > 0 || !webSocket.isOpen()) {
+            return;
+          }
+          sendMessage(webSocket, "No task received after " + secondsUntilTimeout + " seconds. Closing connection...");
+          webSocket.close();
+        },
+        secondsUntilTimeout,
+        TimeUnit.SECONDS
+      );
+
+      // and finally, when your program wants to exit
+    } catch (Exception e) {
+      logger.exception(e);
+      webSocket.close(1, e.getMessage());
+    }
+  }
+
+  @Override
+  public void onClose(WebSocket webSocket, int code, String reason, boolean remote) {
+    SocketData socketData = webSocket.getAttachment();
+    logger.info("Connection closed: " + socketData.id);
+    logger.info(
+      "Disconnected client " + socketData.id + " " +
+        "with code " + code + " " +
+        (reason.isEmpty() ? "" : "and reason " + reason + " ") +
+        "(closed by client: " + remote + ")"
+    );
+
+  }
+
+  @Override
+  public void onMessage(WebSocket webSocket, String s) {
+    // logger.info("Received: " + s.substring(0, 50));
+    IPacket reconstructedPacket = PacketContainer.deserialize(s);
+    try {
+      this.onPacketReceived(webSocket, reconstructedPacket);
+    } catch (JsonProcessingException e) {
+      logger.exception(e);
+      this.log(webSocket, "Error on processing incoming package: " + e.getMessage());
+    }
+  }
+
+  @Override
+  public void onError(WebSocket webSocket, Exception e) {
+    if (webSocket != null) {
+      log(webSocket, e.getMessage());
+      webSocket.close();
+    }
+    logger.exception(e);
+  }
+
+  @Override
+  public void onStart() {
+    logger.success("Websocket server started on port " + this.getPort());
+  }
+
+  /**
+   * A shorthand method for sending informational messages to the client
+   */
+  public void sendMessage(WebSocket webSocket, String text) {
+    try {
+      MessagePacket message = MessagePacket.create(text);
+      webSocket.send(PacketContainer.serialize(message));
+    } catch (Exception e) {
+      System.err.println("Failed to send message: " + text);
+      logger.exception(e);
+    }
+  }
+
+  /**
+   * A shorthand method for sending error messages to the client
+   */
+  public void sendError(WebSocket webSocket, String text, boolean isFatal) {
+    try {
+      ErrorPacket error = ErrorPacket.create(text, isFatal);
+      webSocket.send(PacketContainer.serialize(error));
+    } catch (Exception e) {
+      logger.exception(e);
+      log(webSocket, "Failed to send error: " + text);
+    }
+  }
+
+  /**
+   * The server-side implementation on how to handle certain packets when received
+   */
+  private void onPacketReceived(WebSocket webSocket, IPacket packet) throws JsonProcessingException {
+    SocketData socketData = webSocket.getAttachment();
+
+    // limit the number of tasks per connection
+    if (socketData.totalTasks.get() >= maxTasksPerSession) {
+      sendError(webSocket, "Exceeded the maximum amount of " + maxTasksPerSession + " tasks per session", true);
+      webSocket.close();
+      return;
+    }
+
+    // only allow packets that are meant to be handled by the server
+    if (!(packet instanceof IClientToServerPacket<?> clientToServerPacket)) {
+      sendMessage(webSocket, "The package of type " + packet.getClass().getName() + " is not handled by the server!");
+      return;
+    }
+
+    // update the socket data
+    socketData.unhandledTasks.incrementAndGet();
+    socketData.totalTasks.incrementAndGet();
+
+    // add the packet to the queue so it can be started by the worker
+    CompletableFuture.runAsync(() -> {
+      clientToServerPacket.onHandle(webSocket, this);
+      int remainingUnhandledTasks = socketData.unhandledTasks.decrementAndGet();
+
+      if (socketData.closeIfNoTasksLeft) {
+        // if the websocket has 0 unhandled Tasks, close the connection
+        if (remainingUnhandledTasks <= 0) {
+          sendMessage(webSocket, "All requested tasks finished! Closing connection...");
+          webSocket.close();
+        }
+      }
+    }, taskExecutor);
+  }
+
+  public void log(WebSocket webSocket, String msg) {
+    String socketId = (webSocket == null) ? "???" : webSocket.<SocketData>getAttachment().id;
+    logger.info("[" + socketId + "] " + msg);
+  }
+
+  /**
+   * The data that is associated server-side with any connected client.
+   * This makes it possible to store information that can be mapped to any existing connection.
+   */
+  public static class SocketData {
+
+    public final String id;
+    public final AtomicInteger unhandledTasks = new AtomicInteger(0);
+    public final AtomicInteger totalTasks = new AtomicInteger(0);
+    public boolean closeIfNoTasksLeft = false;
+
+    public SocketData(WebSocket webSocket) {
+      this.id = UUID.randomUUID().toString();
+      webSocket.setAttachment(this);
+    }
+  }
+}

src/main/java/de/dhbwstuttgart/server/packet/DebugPacket.java

@@ -0,0 +1,35 @@
+package de.dhbwstuttgart.server.packet;
+
+import com.fasterxml.jackson.annotation.JsonIgnore;
+import de.dhbwstuttgart.server.SocketClient;
+import de.dhbwstuttgart.server.SocketFuture;
+import de.dhbwstuttgart.server.SocketServer;
+import de.dhbwstuttgart.server.packet.dataContainers.serialized.ISerialNode;
+import de.dhbwstuttgart.server.packet.dataContainers.serialized.SerialList;
+import de.dhbwstuttgart.server.packet.dataContainers.serialized.SerialMap;
+import de.dhbwstuttgart.server.packet.dataContainers.serialized.SerialUUID;
+import de.dhbwstuttgart.server.packet.dataContainers.serialized.SerialValue;
+import org.java_websocket.WebSocket;
+
+public class DebugPacket implements IClientToServerPacket.Void, IServerToClientPacket {
+
+  public SerialUUID a1;
+  public SerialUUID a2;
+  public SerialMap b1;
+  public SerialMap b2;
+  public SerialList<? extends ISerialNode> c1;
+  public SerialList<? extends ISerialNode> c2;
+  public SerialValue<?> d1;
+  public SerialValue<?> d2;
+
+  @JsonIgnore
+  public void onHandle(WebSocket webSocket, SocketClient socketClient) {}
+
+  @JsonIgnore
+  public void onHandle(WebSocket webSocket, SocketServer socketServer) {}
+
+  @JsonIgnore
+  public SocketFuture<IServerToClientPacket> getFuture() {
+    return SocketFuture.completedFuture();
+  }
+}

src/main/java/de/dhbwstuttgart/server/packet/ErrorPacket.java

@@ -0,0 +1,36 @@
+package de.dhbwstuttgart.server.packet;
+
+import com.fasterxml.jackson.annotation.JsonIgnore;
+import de.dhbwstuttgart.server.SocketClient;
+import de.dhbwstuttgart.server.SocketFuture;
+import de.dhbwstuttgart.server.SocketServer;
+import org.java_websocket.WebSocket;
+
+/**
+ * A packet to send simple error messages between the client and the server
+ */
+public class ErrorPacket implements IServerToClientPacket {
+
+  /**
+   * The error endpoint for messages from the server that should be logged out as errors and possibly abort the process
+   */
+  public String error;
+  public boolean isFatal;
+
+  @JsonIgnore
+  public static ErrorPacket create(String error, boolean isFatal) {
+    ErrorPacket packet = new ErrorPacket();
+    packet.error = error;
+    packet.isFatal = isFatal;
+    return packet;
+  }
+
+
+  @JsonIgnore
+  public void onHandle(WebSocket webSocket, SocketClient socketClient) {
+    SocketClient.logger.exception(new RuntimeException(this.error));
+    if (this.isFatal) {
+      socketClient.close(1, "Received fatal error from server");
+    }
+  }
+}

src/main/java/de/dhbwstuttgart/server/packet/IClientToServerPacket.java

@@ -0,0 +1,26 @@
+package de.dhbwstuttgart.server.packet;
+
+import com.fasterxml.jackson.annotation.JsonIgnore;
+import de.dhbwstuttgart.server.SocketFuture;
+import de.dhbwstuttgart.server.SocketServer;
+import org.java_websocket.WebSocket;
+
+/**
+ * A packet that will be sent to the server. Use <code>Void</code> Sub-Interface for packets without response
+ *
+ * @param <T>   The response packet that will fulfill the future.
+ */
+public interface IClientToServerPacket<T extends IServerToClientPacket> extends IPacket {
+
+  @JsonIgnore
+  void onHandle(WebSocket webSocket, SocketServer socketServer);
+
+  @JsonIgnore
+  SocketFuture<T> getFuture();
+
+  /**
+   * Special case, where the packet will remain unanswered by the server
+   */
+  interface Void extends IClientToServerPacket<IServerToClientPacket> {}
+}
+

src/main/java/de/dhbwstuttgart/server/packet/IPacket.java

@@ -0,0 +1,12 @@
+package de.dhbwstuttgart.server.packet;
+
+/**
+ * The shared interface for all packet of the client-server connection.
+ * A packet must always:
+ * - Have a default / no-parameter constructor
+ * - Have only serializable public properties (or disable them via jackson annotations)
+ *
+ */
+public interface IPacket {
+
+}

src/main/java/de/dhbwstuttgart/server/packet/IServerToClientPacket.java

@@ -0,0 +1,12 @@
+package de.dhbwstuttgart.server.packet;
+
+import com.fasterxml.jackson.annotation.JsonIgnore;
+import de.dhbwstuttgart.server.SocketClient;
+import org.java_websocket.WebSocket;
+
+public interface IServerToClientPacket extends IPacket {
+
+  @JsonIgnore
+  void onHandle(WebSocket webSocket, SocketClient socketClient);
+
+}

src/main/java/de/dhbwstuttgart/server/packet/InvalidPacket.java

@@ -0,0 +1,35 @@
+package de.dhbwstuttgart.server.packet;
+
+import com.fasterxml.jackson.annotation.JsonIgnore;
+import de.dhbwstuttgart.server.SocketClient;
+import de.dhbwstuttgart.server.SocketFuture;
+import de.dhbwstuttgart.server.SocketServer;
+import org.java_websocket.WebSocket;
+
+/**
+ * A fallback packet that is generated if the received JSON could not be mapped to an existing package
+ */
+public class InvalidPacket implements IClientToServerPacket.Void, IServerToClientPacket {
+
+  /**
+   * If available, the error that caused this package to appear
+   */
+  public String error = "<unknown error>";
+
+
+  @JsonIgnore
+  public void onHandle(WebSocket webSocket, SocketClient socketClient) {
+    SocketClient.logger.error("InvalidPacket: " + this.error);
+  }
+
+  @JsonIgnore
+  public void onHandle(WebSocket webSocket, SocketServer socketServer) {
+    socketServer.log(webSocket, "InvalidPacket: " + this.error);
+  }
+
+  @JsonIgnore
+  public SocketFuture<IServerToClientPacket> getFuture() {
+    return SocketFuture.completedFuture();
+  }
+
+}

src/main/java/de/dhbwstuttgart/server/packet/MessagePacket.java

@@ -0,0 +1,40 @@
+package de.dhbwstuttgart.server.packet;
+
+import com.fasterxml.jackson.annotation.JsonIgnore;
+import de.dhbwstuttgart.server.SocketClient;
+import de.dhbwstuttgart.server.SocketFuture;
+import de.dhbwstuttgart.server.SocketServer;
+import org.java_websocket.WebSocket;
+
+/**
+ * A packet to send simple informational messages between the client and the server
+ */
+public class MessagePacket implements IClientToServerPacket.Void, IServerToClientPacket {
+
+  /**
+   * The informational message from the server that should be logged out outputted
+   */
+  public String message;
+
+  @JsonIgnore
+  public static MessagePacket create(String message) {
+    MessagePacket packet = new MessagePacket();
+    packet.message = message;
+    return packet;
+  }
+
+  @JsonIgnore
+  public void onHandle(WebSocket webSocket, SocketClient socketClient) {
+    SocketClient.logger.info("SocketMessage: " + this.message);
+  }
+
+  @JsonIgnore
+  public void onHandle(WebSocket webSocket, SocketServer socketServer) {
+    socketServer.log(webSocket, this.message);
+  }
+
+  @JsonIgnore
+  public SocketFuture<IServerToClientPacket> getFuture() {
+    return SocketFuture.completedFuture();
+  }
+}

src/main/java/de/dhbwstuttgart/server/packet/PacketContainer.java

@@ -0,0 +1,98 @@
+package de.dhbwstuttgart.server.packet;
+
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import de.dhbwstuttgart.util.Logger;
+
+/**
+ * A wrapper for the packet to ensure correct serialization/deserialization and make it possible to detect the matching
+ * packet type for deserialization.
+ */
+@JsonInclude(JsonInclude.Include.NON_NULL)
+public class PacketContainer {
+
+  // The jackson serializer / deserializer tool
+  private static final ObjectMapper objectMapper = new ObjectMapper();
+
+  /*
+   * The available packet types. The one type that is represented in the JSON should always be the ONLY non-null value.
+   * They have to be public (for the moment) to let jackson fill them in while deserializing
+   */
+  public ErrorPacket errorPacket = null;
+  public MessagePacket messagePacket = null;
+  public InvalidPacket invalidPacket = null;
+  public UnifyRequestPacket unifyRequestPacket = null;
+  public UnifyResultPacket unifyResultPacket = null;
+  public DebugPacket debugPacket = null;
+  public SetAutoclosePacket setAutoclosePacket = null;
+
+
+  /**
+   * Generate the JSON string for the given packet
+   *
+   * @param packet The packet to serialize
+   * @return The JSON representation of the packet
+   */
+  public static String serialize(IPacket packet) throws JsonProcessingException {
+    objectMapper.setSerializationInclusion(JsonInclude.Include.NON_NULL);
+    PacketContainer container = new PacketContainer();
+
+    if (packet instanceof ErrorPacket)
+      container.errorPacket = (ErrorPacket) packet;
+    else if (packet instanceof MessagePacket)
+      container.messagePacket = (MessagePacket) packet;
+    else if (packet instanceof UnifyRequestPacket)
+      container.unifyRequestPacket = (UnifyRequestPacket) packet;
+    else if (packet instanceof UnifyResultPacket)
+      container.unifyResultPacket = (UnifyResultPacket) packet;
+    else if (packet instanceof DebugPacket)
+      container.debugPacket = (DebugPacket) packet;
+    else if (packet instanceof SetAutoclosePacket)
+      container.setAutoclosePacket = (SetAutoclosePacket) packet;
+    // Add new packets here and in the deserialize method
+    else
+      throw new RuntimeException("Cannot map packet to any known packet class");
+
+    return objectMapper.writeValueAsString(container);
+  }
+
+  /**
+   * Use the JSON string to generate the matching packet object
+   *
+   * @param json The serialized representation of a packet container
+   * @return The deserialized Packet object
+   */
+  public static IPacket deserialize(String json) {
+    objectMapper.setSerializationInclusion(JsonInclude.Include.NON_NULL);
+
+    try {
+      PacketContainer container = objectMapper.readValue(json, PacketContainer.class);
+
+      if (container.errorPacket != null)
+        return container.errorPacket;
+      if (container.messagePacket != null)
+        return container.messagePacket;
+      if (container.invalidPacket != null)
+        return container.invalidPacket;
+      if (container.unifyRequestPacket != null)
+        return container.unifyRequestPacket;
+      if (container.unifyResultPacket != null)
+        return container.unifyResultPacket;
+      if (container.debugPacket != null)
+        return container.debugPacket;
+      if (container.setAutoclosePacket != null)
+        return container.setAutoclosePacket;
+      // Add new packets here and in the serialize method
+
+      throw new RuntimeException("Cannot map received json to any known packet class");
+    } catch (Exception e) {
+      (new Logger()).exception(e);
+      InvalidPacket packet = new InvalidPacket();
+      packet.error = e.getMessage();
+      return packet;
+    }
+  }
+
+
+}

src/main/java/de/dhbwstuttgart/server/packet/SetAutoclosePacket.java

@@ -0,0 +1,32 @@
+package de.dhbwstuttgart.server.packet;
+
+import com.fasterxml.jackson.annotation.JsonIgnore;
+import de.dhbwstuttgart.server.SocketClient;
+import de.dhbwstuttgart.server.SocketFuture;
+import de.dhbwstuttgart.server.SocketServer;
+import org.java_websocket.WebSocket;
+
+/**
+ * Normally, a connection stays open until either the client or the server process ends.
+ * Send this packet to inform the server that the connection can be closed once all tasks are done
+ */
+public class SetAutoclosePacket implements IClientToServerPacket.Void {
+
+  public int dummyProperty = 1;
+
+  @JsonIgnore
+  public static SetAutoclosePacket create() {
+    return new SetAutoclosePacket();
+  }
+
+  @JsonIgnore
+  public void onHandle(WebSocket webSocket, SocketServer socketServer) {
+    webSocket.<SocketServer.SocketData>getAttachment().closeIfNoTasksLeft = true;
+    socketServer.log(webSocket, "Marked connection as autoclose");
+  }
+
+  @JsonIgnore
+  public SocketFuture<IServerToClientPacket> getFuture() {
+    return SocketFuture.completedFuture();
+  }
+}

src/main/java/de/dhbwstuttgart/server/packet/UnifyRequestPacket.java

@@ -0,0 +1,164 @@
+package de.dhbwstuttgart.server.packet;
+
+import com.fasterxml.jackson.annotation.JsonIgnore;
+import de.dhbwstuttgart.core.ConsoleInterface;
+import de.dhbwstuttgart.server.ServerTaskLogger;
+import de.dhbwstuttgart.server.SocketFuture;
+import de.dhbwstuttgart.server.SocketServer;
+import de.dhbwstuttgart.server.packet.dataContainers.KeyStorage;
+import de.dhbwstuttgart.server.packet.dataContainers.serialized.SerialList;
+import de.dhbwstuttgart.server.packet.dataContainers.serialized.SerialMap;
+import de.dhbwstuttgart.server.packet.dataContainers.serialized.SerialValue;
+import de.dhbwstuttgart.typeinference.constraints.ConstraintSet;
+import de.dhbwstuttgart.typeinference.constraints.Pair;
+import de.dhbwstuttgart.typeinference.unify.PlaceholderRegistry;
+import de.dhbwstuttgart.typeinference.unify.TypeUnify;
+import de.dhbwstuttgart.typeinference.unify.UnifyContext;
+import de.dhbwstuttgart.typeinference.unify.UnifyResultListenerImpl;
+import de.dhbwstuttgart.typeinference.unify.UnifyResultModel;
+import de.dhbwstuttgart.typeinference.unify.UnifyTaskModel;
+import de.dhbwstuttgart.typeinference.unify.interfaces.IFiniteClosure;
+import de.dhbwstuttgart.typeinference.unify.model.FiniteClosure;
+import de.dhbwstuttgart.typeinference.unify.model.PlaceholderType;
+import de.dhbwstuttgart.typeinference.unify.model.UnifyPair;
+import de.dhbwstuttgart.typeinference.unify.model.UnifyType;
+import de.dhbwstuttgart.util.Logger;
+import java.util.ArrayList;
+import java.util.HashSet;
+import java.util.List;
+import java.util.concurrent.ForkJoinPool;
+import org.java_websocket.WebSocket;
+
+/**
+ * A packet to send all required data for the unification algorithm to the server and request the unification
+ */
+public class UnifyRequestPacket implements IClientToServerPacket<UnifyResultPacket> {
+
+  public SerialMap finiteClosure;
+  public SerialMap constraintSet;
+  public SerialMap unifyConstraintSet;
+  public SerialMap serialKeyStorage;
+  public SerialValue<?> placeholders;
+  public SerialList<SerialMap> factoryplaceholders;
+  public String futureId;
+  public int logLevel;
+
+  @JsonIgnore
+  private KeyStorage keyStorage = new KeyStorage();
+  @JsonIgnore
+  private boolean keyStorageLoaded = false;
+
+  public static UnifyRequestPacket create(
+    FiniteClosure finiteClosure,
+    ConstraintSet<Pair> constraintSet,
+    ConstraintSet<UnifyPair> unifyConstraintSet,
+    PlaceholderRegistry placeholderRegistry
+  ) {
+    UnifyRequestPacket packet = new UnifyRequestPacket();
+    // store constraint and finite closure
+    packet.finiteClosure = finiteClosure.toSerial(packet.keyStorage);
+    packet.constraintSet = constraintSet.toSerial(packet.keyStorage);
+    packet.unifyConstraintSet = unifyConstraintSet.toSerial(packet.keyStorage);
+    // store placeholder registry
+    var serialRegistry = placeholderRegistry.toSerial(packet.keyStorage);
+    packet.placeholders = serialRegistry.getValue("ph");
+    packet.factoryplaceholders = serialRegistry.getList("factoryPh").assertListOfMaps();
+    // store referenced objects separately
+    packet.serialKeyStorage = packet.keyStorage.toSerial(packet.keyStorage);
+    packet.logLevel = ConsoleInterface.logLevel.getValue();
+    return packet;
+  }
+
+
+  @JsonIgnore
+  public void loadKeyStorage(UnifyContext context) {
+    if (!keyStorageLoaded) {
+      keyStorageLoaded = true;
+      keyStorage = KeyStorage.fromSerial(this.serialKeyStorage, context);
+    }
+  }
+
+  @JsonIgnore
+  private FiniteClosure retrieveFiniteClosure(UnifyContext context) {
+    this.loadKeyStorage(context);
+    return FiniteClosure.fromSerial(this.finiteClosure, context, keyStorage);
+  }
+
+  @JsonIgnore
+  private ConstraintSet<Pair> retrieveConstraintSet(UnifyContext context) {
+    this.loadKeyStorage(context);
+    return ConstraintSet.fromSerial(this.constraintSet, context, Pair.class, keyStorage);
+  }
+
+  @JsonIgnore
+  private ConstraintSet<UnifyPair> retrieveUnifyConstraintSet(UnifyContext context) {
+    this.loadKeyStorage(context);
+    return ConstraintSet.fromSerial(this.unifyConstraintSet, context, UnifyPair.class, keyStorage);
+  }
+
+  @JsonIgnore
+  public void onHandle(WebSocket webSocket, SocketServer socketServer) {
+    socketServer.sendMessage(webSocket, "You requested a unify! Please wait until I calculated everything...");
+    socketServer.log(webSocket, "Client requested a unification. Starting now...");
+
+    try {
+      var placeholderRegistry = new PlaceholderRegistry();
+      ArrayList<String> existingPlaceholders = (ArrayList) this.placeholders.getOf(ArrayList.class);
+      existingPlaceholders.forEach(placeholderRegistry::addPlaceholder);
+
+      Logger logger = new ServerTaskLogger(
+        webSocket,
+        socketServer,
+        Logger.LogLevel.fromValue(
+          Math.max(this.logLevel, Logger.LogLevel.INFO.getValue())
+        )
+      );
+      var unifyContext = new UnifyContext(logger, true,
+        new UnifyResultModel(new ConstraintSet<>(), new FiniteClosure(new HashSet<>(), logger, placeholderRegistry)),
+        new UnifyTaskModel(), ForkJoinPool.commonPool(), placeholderRegistry
+      );
+
+      this.factoryplaceholders.stream()
+        .map(p -> (PlaceholderType)UnifyType.fromSerial(p, unifyContext))
+        .forEach(placeholderRegistry.UnifyTypeFactory_PLACEHOLDERS::add);
+
+
+      // start the unification algorithm from the received data
+      IFiniteClosure finiteClosure = this.retrieveFiniteClosure(unifyContext);
+      ConstraintSet<Pair> constraintSet = this.retrieveConstraintSet(unifyContext);
+      ConstraintSet<UnifyPair> unifyConstraintSet = this.retrieveUnifyConstraintSet(unifyContext);
+
+      var resultModel = new UnifyResultModel(constraintSet, finiteClosure);
+      UnifyResultListenerImpl resultListener = new UnifyResultListenerImpl();
+      resultModel.addUnifyResultListener(resultListener);
+
+      TypeUnify.unifyParallel(
+        unifyConstraintSet.getUndConstraints(),
+        unifyConstraintSet.getOderConstraints(),
+        finiteClosure,
+        unifyContext.newWithResultModel(resultModel)
+      );
+
+      var resultSets = resultListener.getResults();
+
+      socketServer.log(webSocket, "Finished unification");
+      socketServer.sendMessage(webSocket, "Unification finished. Found " + resultSets.size() + " result sets");
+
+      if (webSocket.isOpen()) {
+        UnifyResultPacket resultPacket = UnifyResultPacket.create(resultSets, futureId);
+        webSocket.send(PacketContainer.serialize(resultPacket));
+      }
+    } catch (Exception e) {
+      SocketServer.logger.exception(e);
+      socketServer.log(webSocket, e.getMessage());
+    }
+  }
+
+  @JsonIgnore
+  public SocketFuture<UnifyResultPacket> getFuture() {
+    var future = new SocketFuture<>(List.of(UnifyResultPacket.class));
+    futureId = future.futureId;
+    return future;
+  }
+
+}

src/main/java/de/dhbwstuttgart/server/packet/UnifyResultPacket.java

@@ -0,0 +1,45 @@
+package de.dhbwstuttgart.server.packet;
+
+import com.fasterxml.jackson.annotation.JsonIgnore;
+import de.dhbwstuttgart.server.SocketClient;
+import de.dhbwstuttgart.server.packet.dataContainers.KeyStorage;
+import de.dhbwstuttgart.server.packet.dataContainers.serialized.ISerialNode;
+import de.dhbwstuttgart.server.packet.dataContainers.serialized.SerialList;
+import de.dhbwstuttgart.server.packet.dataContainers.serialized.SerialMap;
+import de.dhbwstuttgart.typeinference.result.ResultSet;
+import de.dhbwstuttgart.typeinference.unify.UnifyContext;
+import java.util.List;
+import org.java_websocket.WebSocket;
+
+/**
+ * A packet to send all calculated data from the unification algorithm back to the client
+ */
+public class UnifyResultPacket implements IServerToClientPacket {
+
+  public SerialList<ISerialNode> results;
+  public SerialMap keyStorage;
+  public String futureId;
+
+  public static UnifyResultPacket create(List<ResultSet> resultSets, String futureId) {
+    UnifyResultPacket serialized = new UnifyResultPacket();
+    KeyStorage keyStorage = new KeyStorage();
+    serialized.results = SerialList.fromMapped(resultSets, resultSet -> resultSet.toSerial(keyStorage));
+    serialized.keyStorage = keyStorage.toSerial(keyStorage);
+    serialized.futureId = futureId;
+    return serialized;
+  }
+
+  @JsonIgnore
+  public List<ResultSet> getResultSet(UnifyContext context) {
+    return this.results.assertListOfMaps().stream()
+      .map(resultData -> ResultSet.fromSerial(resultData, context)).toList();
+  }
+
+  @JsonIgnore
+  public void onHandle(WebSocket webSocket, SocketClient socketClient) {
+    SocketClient.logger.info("Received unify result");
+    socketClient.completeResponseFuture(futureId, this);
+  }
+
+
+}

src/main/java/de/dhbwstuttgart/server/packet/dataContainers/ISerializableData.java

@@ -0,0 +1,16 @@
+package de.dhbwstuttgart.server.packet.dataContainers;
+
+import de.dhbwstuttgart.exceptions.NotImplementedException;
+import de.dhbwstuttgart.server.packet.dataContainers.serialized.ISerialNode;
+import de.dhbwstuttgart.server.packet.dataContainers.serialized.SerialMap;
+import de.dhbwstuttgart.typeinference.unify.UnifyContext;
+
+public interface ISerializableData {
+
+  public abstract ISerialNode toSerial(KeyStorage keyStorage);
+
+  public static Object fromSerial(SerialMap data, UnifyContext context) {
+    throw new NotImplementedException("Missing implementation of \"fromSerial\" for a serializable element");
+  }
+
+}

src/main/java/de/dhbwstuttgart/server/packet/dataContainers/KeyStorage.java

@@ -0,0 +1,103 @@
+package de.dhbwstuttgart.server.packet.dataContainers;
+
+import de.dhbwstuttgart.server.packet.dataContainers.serialized.SerialMap;
+import de.dhbwstuttgart.typeinference.unify.UnifyContext;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.concurrent.atomic.AtomicInteger;
+
+public class KeyStorage implements ISerializableData {
+
+  /**
+   *  Store a unique identifier for every element, so it can be referenced in the json
+   */
+  protected AtomicInteger identifierCount = new AtomicInteger();
+  /**
+   *  Store the serialized element per identifier when serializing
+   */
+  protected SerialMap serializedElements = new SerialMap();
+  /**
+   *  Store the unserialized element per identifier when unserializing
+   */
+  protected Map<String, ISerializableData> unserializedElements = new HashMap<>();
+
+
+  /**
+   *  Retrieve or generate a new identifier for a constraint
+   */
+  public String getIdentifier() {
+    return this.identifierCount.incrementAndGet() + "_";
+  }
+
+  /**
+   *  Checks if the given element identifier belongs to an element that was already serialized
+   */
+  public boolean isAlreadySerialized(String identifier) {
+    return this.serializedElements.containsKey(identifier);
+  }
+
+  /**
+   *  Checks if the given element identifier belongs to a element that was already unserialized
+   */
+  public boolean isAlreadyUnserialized(String identifier) {
+    return this.unserializedElements.containsKey(identifier);
+  }
+
+  /**
+   *  Register a serialized element to prevent it from being serialized again
+   */
+  public void putSerialized(String identifier, SerialMap serializedElement) {
+    this.serializedElements.put(identifier, serializedElement);
+  }
+
+  /**
+   *  Retrieve a serialized element
+   */
+  public SerialMap getSerialized(String identifier) {
+    if (!this.serializedElements.containsKey(identifier)) {
+      throw new RuntimeException("No serialized element of identifier " + identifier + " available to get");
+    }
+    return this.serializedElements.getMap(identifier);
+  }
+
+  /**
+   *  Register an unserialized element to prevent it from being unserialized again
+   */
+  public void putUnserialized(String identifier, ISerializableData element) {
+    this.unserializedElements.put(identifier, element);
+  }
+
+  /**
+   *  Retrieve an unserialized element
+   */
+  public <T extends ISerializableData> T getUnserialized(String identifier, Class<T> target) {
+    if (!this.unserializedElements.containsKey(identifier)) {
+      throw new RuntimeException("No unserialized element of identifier " + identifier + " available to get");
+    }
+    var element = this.unserializedElements.get(identifier);
+    if (target.isInstance(element)) {
+      return (T) element;
+    }
+    throw new RuntimeException("Failed to get unserialized element from KeyStorage. Expected instance of " +
+      target.getName() + " but found " + element.getClass().getName());
+  }
+
+  @Override
+  public SerialMap toSerial(KeyStorage keyStorage) {
+    SerialMap serialized = new SerialMap();
+    serialized.put("serializedElements", this.serializedElements);
+    return serialized;
+  }
+
+  public static KeyStorage fromSerial(SerialMap data, UnifyContext context) {
+    var serializedConstraintsData = data.getMap("serializedElements");
+    var constraintContext = new KeyStorage();
+    for (var entry : serializedConstraintsData.entrySet()) {
+      if (entry.getValue() instanceof SerialMap valueMap) {
+        constraintContext.putSerialized(entry.getKey(), valueMap);
+      }
+    }
+    return constraintContext;
+  }
+
+}

src/main/java/de/dhbwstuttgart/server/packet/dataContainers/serialized/ISerialNode.java

@@ -0,0 +1,31 @@
+package de.dhbwstuttgart.server.packet.dataContainers.serialized;
+
+import com.fasterxml.jackson.annotation.JsonSubTypes;
+import com.fasterxml.jackson.annotation.JsonTypeInfo;
+
+
+/**
+ * Use the following classes for an intermediate serialized tree structure
+ */
+@JsonTypeInfo(
+  use = JsonTypeInfo.Id.NAME,
+  include = JsonTypeInfo.As.PROPERTY,
+  property = "_t"
+)
+@JsonSubTypes({
+  @JsonSubTypes.Type(value = SerialMap.class, name = "m"),
+  @JsonSubTypes.Type(value = SerialList.class, name = "l"),
+  @JsonSubTypes.Type(value = SerialValue.class, name = "v"),
+  @JsonSubTypes.Type(value = SerialUUID.class, name = "u")
+})
+public interface ISerialNode {
+
+  default <T extends ISerialNode> T assertType(Class<T> type) {
+    if (type.isInstance(this)) {
+      return (T) this;
+    }
+    throw new RuntimeException("Expected ISerialNode to be of type " + type.getName()
+      + " but found " + this.getClass().getName() + " instead");
+  }
+
+}

src/main/java/de/dhbwstuttgart/server/packet/dataContainers/serialized/SerialList.java

@@ -0,0 +1,74 @@
+package de.dhbwstuttgart.server.packet.dataContainers.serialized;
+
+import com.fasterxml.jackson.annotation.JsonIgnore;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.function.Function;
+import java.util.stream.Stream;
+
+public class SerialList<I extends ISerialNode> extends ArrayList<I> implements ISerialNode {
+  public SerialList() {}
+  public SerialList(Collection<I> data) {
+    this.addAll(data);
+  }
+  public SerialList(Stream<I> data) {
+    this(data.toList());
+  }
+  public SerialList(I[] data) {
+    this(Arrays.stream(data).toList());
+  }
+
+  @SafeVarargs
+  @JsonIgnore
+  public static <A extends ISerialNode> ArrayList<A> from(A ...values) {
+    ArrayList<A> list = new SerialList<>();
+    Collections.addAll(list, values);
+    return list;
+  }
+  @JsonIgnore
+  public static <A,B extends ISerialNode> SerialList<B> fromMapped(Stream<A> data, Function<A,B> mapper) {
+    return new SerialList<>(data.map(mapper).toList());
+  }
+  @JsonIgnore
+  public static <A,B extends ISerialNode> SerialList<B> fromMapped(Collection<A> data, Function<A,B> mapper) {
+    return SerialList.fromMapped(data.stream(), mapper);
+  }
+  @JsonIgnore
+  public static <A,B extends ISerialNode> SerialList<B> fromMapped(A[] data, Function<A,B> mapper) {
+    return SerialList.fromMapped(Arrays.stream(data), mapper);
+  }
+
+  @JsonIgnore
+  public SerialList<SerialMap> assertListOfMaps() {
+    if (this.isEmpty() || this.get(0) instanceof SerialMap) {
+      return (SerialList<SerialMap>) this;
+    }
+    throw new RuntimeException("Required List to contain SerialMap elements but condition failed");
+  }
+
+  @JsonIgnore
+  public SerialList<SerialList<?>> assertListOfLists() {
+    if (this.isEmpty() || this.get(0) instanceof SerialList) {
+      return (SerialList<SerialList<?>>) this;
+    }
+    throw new RuntimeException("Required List to contain SerialList elements but condition failed");
+  }
+
+  @JsonIgnore
+  public SerialList<SerialValue<?>> assertListOfValues() {
+    if (this.isEmpty() || this.get(0) instanceof SerialValue) {
+      return (SerialList<SerialValue<?>>) this;
+    }
+    throw new RuntimeException("Required List to contain SerialValue elements but condition failed");
+  }
+
+  @JsonIgnore
+  public SerialList<SerialUUID> assertListOfUUIDs() {
+    if (this.isEmpty() || this.get(0) instanceof SerialUUID) {
+      return (SerialList<SerialUUID>) this;
+    }
+    throw new RuntimeException("Required List to contain SerialUUID elements but condition failed");
+  }
+}

src/main/java/de/dhbwstuttgart/server/packet/dataContainers/serialized/SerialMap.java

@@ -0,0 +1,84 @@
+package de.dhbwstuttgart.server.packet.dataContainers.serialized;
+
+import com.fasterxml.jackson.annotation.JsonIgnore;
+import java.util.HashMap;
+import java.util.Map;
+import org.jspecify.annotations.Nullable;
+
+public class SerialMap extends HashMap<String, ISerialNode> implements ISerialNode {
+
+  public SerialMap() {
+    super();
+  }
+
+  public SerialMap(Map<String, ISerialNode> data) {
+    super(data);
+  }
+
+  @JsonIgnore
+  public void put(String key, Boolean value) {
+    this.put(key, new SerialValue<>(value));
+  }
+
+  @JsonIgnore
+  public void put(String key, String value) {
+    this.put(key, new SerialValue<>(value));
+  }
+
+  @JsonIgnore
+  public void put(String key, Number value) {
+    this.put(key, new SerialValue<>(value));
+  }
+
+  @JsonIgnore
+  private <T> T get(String key, Class<T> expectedType) {
+    if (!this.containsKey(key)) {
+      throw new RuntimeException("Missing required value " + key + " in ObjectMap");
+    }
+    var element = this.get(key);
+    if (element != null && element.getClass() != expectedType) {
+      throw new RuntimeException(
+        "Required value " + key + " to be of type " + expectedType.getName() + " but found " + element.getClass().getName()
+      );
+    }
+    return (T)element;
+  }
+
+  @JsonIgnore
+  public SerialList<?> getList(String key) {
+    return this.get(key, SerialList.class);
+  }
+
+  @Nullable
+  @JsonIgnore
+  public SerialList<?> getListOrNull(String key) {
+    return this.containsKey(key) ? this.getList(key) : null;
+  }
+
+  @JsonIgnore
+  public SerialMap getMap(String key) {
+    return this.get(key, SerialMap.class);
+  }
+
+  @Nullable
+  @JsonIgnore
+  public SerialMap getMapOrNull(String key) {
+    return this.containsKey(key) ? this.getMap(key) : null;
+  }
+
+  @JsonIgnore
+  public SerialValue<?> getValue(String key) {
+    return this.get(key, SerialValue.class);
+  }
+
+  @JsonIgnore
+  public SerialUUID getUUID(String key) {
+    return this.get(key, SerialUUID.class);
+  }
+
+  @Nullable
+  @JsonIgnore
+  public SerialUUID getUUIDOrNull(String key) {
+    return this.containsKey(key) ? this.getUUID(key) : null;
+  }
+}

src/main/java/de/dhbwstuttgart/server/packet/dataContainers/serialized/SerialUUID.java

@@ -0,0 +1,13 @@
+package de.dhbwstuttgart.server.packet.dataContainers.serialized;
+
+public class SerialUUID implements ISerialNode {
+
+  public String uuid;
+
+  public SerialUUID() {}
+
+  public SerialUUID(String uuid) {
+    this.uuid = uuid;
+  }
+
+}

src/main/java/de/dhbwstuttgart/server/packet/dataContainers/serialized/SerialValue.java

@@ -0,0 +1,28 @@
+package de.dhbwstuttgart.server.packet.dataContainers.serialized;
+
+import com.fasterxml.jackson.annotation.JsonIgnore;
+
+public class SerialValue<T> implements ISerialNode {
+  public T value;
+  public static final SerialValue<Object> NULL = new SerialValue<>(null);
+
+  public SerialValue() {}
+
+  public SerialValue(T value) {
+    this.value = value;
+  }
+
+  @JsonIgnore
+  public <A> SerialValue<A> assertValueOf(Class<A> targetClass) {
+    if (this.value == null || targetClass.isInstance(this.value)) {
+      return (SerialValue<A>) this;
+    }
+    throw new RuntimeException("Required Value to contain " + targetClass.getName() + " value but condition failed on" +
+      " type " + this.value.getClass().getName());
+  }
+
+  @JsonIgnore
+  public <A> A getOf(Class<A> targetClass) {
+    return this.assertValueOf(targetClass).value;
+  }
+}

src/main/java/de/dhbwstuttgart/syntaxtree/ASTVisitor.java

@@ -10,6 +10,8 @@ public interface ASTVisitor extends StatementVisitor{
 
     void visit(FormalParameter formalParameter);
 
+    void visit(LiteralPattern literalPattern);
+
     void visit(GenericDeclarationList genericTypeVars);
 
     void visit(Field field);

src/main/java/de/dhbwstuttgart/syntaxtree/AbstractASTWalker.java

@@ -37,6 +37,11 @@ public abstract class AbstractASTWalker implements ASTVisitor {
         formalParameter.getType().accept((ASTVisitor) this);
     }
 
+    @Override
+    public void visit(LiteralPattern literalPattern) {
+
+    }
+
     @Override
     public void visit(GenericDeclarationList genericTypeVars) {
         Iterator<GenericTypeVar> genericIterator = genericTypeVars.iterator();
@@ -236,6 +241,11 @@ public abstract class AbstractASTWalker implements ASTVisitor {
         aBreak.accept(this);
     }
 
+    @Override
+    public void visit(Continue aContinue) {
+        aContinue.accept(this);
+    }
+
     @Override
     public void visit(StaticClassName staticClassName) {
 

src/main/java/de/dhbwstuttgart/syntaxtree/ClassOrInterface.java

@@ -86,6 +86,9 @@ public class ClassOrInterface extends SyntaxTreeNode implements TypeScope {
     return staticInitializer;
   }
 
+  public boolean isSealed() { return permittedSubtypes != null; }
+  public List<RefType> getPermittedSubtypes() { return permittedSubtypes != null ? permittedSubtypes : List.of(); }
+
   public boolean isInterface() {
       return (Modifier.INTERFACE & this.getModifiers()) != 0;
   }
@@ -188,9 +191,8 @@ public class ClassOrInterface extends SyntaxTreeNode implements TypeScope {
   @Override
   public boolean equals(Object o) {
     if (this == o) return true;
-    if (o == null || getClass() != o.getClass()) return false;
-    ClassOrInterface that = (ClassOrInterface) o;
-    return Objects.equals(name, that.name);
+    if (!(o instanceof ClassOrInterface other)) return false;
+    return Objects.equals(name, other.name);
   }
 
   @Override

src/main/java/de/dhbwstuttgart/syntaxtree/LiteralPattern.java

@@ -0,0 +1,29 @@
+package de.dhbwstuttgart.syntaxtree;
+
+
+import de.dhbwstuttgart.syntaxtree.ASTVisitor;
+import de.dhbwstuttgart.syntaxtree.Pattern;
+import de.dhbwstuttgart.syntaxtree.StatementVisitor;
+import de.dhbwstuttgart.syntaxtree.statement.Expression;
+import de.dhbwstuttgart.syntaxtree.type.RefTypeOrTPHOrWildcardOrGeneric;
+import de.dhbwstuttgart.typeinference.assumptions.TypeInferenceBlockInformation;
+import de.dhbwstuttgart.typeinference.constraints.ConstraintSet;
+import org.antlr.v4.runtime.Token;
+
+public class LiteralPattern extends FormalParameter
+{
+    public final Expression value;
+    public LiteralPattern(RefTypeOrTPHOrWildcardOrGeneric type, Expression value, Token offset) {
+        super(null, type, offset);
+
+        this.value = value;
+    }
+    @Override
+    public FormalParameter withType(RefTypeOrTPHOrWildcardOrGeneric type) {
+        return new LiteralPattern(type, value, getOffset());
+    }
+    @Override
+    public void accept(ASTVisitor visitor) {
+        visitor.visit(this);
+    }
+}

src/main/java/de/dhbwstuttgart/syntaxtree/StatementVisitor.java

@@ -3,6 +3,7 @@ package de.dhbwstuttgart.syntaxtree;
 import de.dhbwstuttgart.parser.SyntaxTreeGenerator.AssignToLocal;
 import de.dhbwstuttgart.syntaxtree.statement.*;
 
+
 public interface StatementVisitor {
 
     void visit(ArgumentList argumentList);
@@ -53,6 +54,8 @@ public interface StatementVisitor {
 
     void visit(Break aBreak);
 
+    void visit(Continue aContinue);
+
     void visit(Yield aYield);
     
     void visit(StaticClassName staticClassName);

src/main/java/de/dhbwstuttgart/syntaxtree/SyntaxTree.java

@@ -0,0 +1,8 @@
+package de.dhbwstuttgart.syntaxtree;
+
+import de.dhbwstuttgart.util.Logger;
+
+public class SyntaxTree {
+
+  public static Logger logger = new Logger("SyntaxTree");
+}

src/main/java/de/dhbwstuttgart/syntaxtree/factory/ASTFactory.java

@@ -176,8 +176,9 @@ public class ASTFactory {
 		for (Type jreInterface : jreClass.getGenericInterfaces()) {
 			implementedInterfaces.add((RefType) createType(jreInterface));
 		}
-		List<RefType> permittedSubtypes = new ArrayList<>();
+		List<RefType> permittedSubtypes = null;
 		if (jreClass.isSealed()) {
+			permittedSubtypes = new ArrayList<>();
 			for (Class subclass : jreClass.getPermittedSubclasses()) {
 				permittedSubtypes.add((RefType) createType(subclass));
 			}

src/main/java/de/dhbwstuttgart/syntaxtree/factory/NameGenerator.java

@@ -1,5 +1,8 @@
 package de.dhbwstuttgart.syntaxtree.factory;
 
+import de.dhbwstuttgart.core.JavaTXCompiler;
+import de.dhbwstuttgart.core.JavaTXServer;
+
 public class NameGenerator {
 
     private static String strNextName = "A";
@@ -26,7 +29,11 @@ public class NameGenerator {
     
         // n�chster Name berechnen und in strNextName speichern        
         inc( strNextName.length() - 1 );
-        
+
+        if (JavaTXServer.isRunning) {
+            throw new RuntimeException("Using the NameGenerator on a server is not allowed");
+        }
+        JavaTXCompiler.defaultClientPlaceholderRegistry.addPlaceholder(strReturn);
         return strReturn;        
     }