4 files changed, 52 insertions, 31 deletions
diff --git a/src/delombok/lombok/delombok/PrettyPrinter.java b/src/delombok/lombok/delombok/PrettyPrinter.java
index bcf3f431..605b9391 100644
--- a/src/delombok/lombok/delombok/PrettyPrinter.java
+++ b/src/delombok/lombok/delombok/PrettyPrinter.java
@@ -545,6 +545,12 @@ public class PrettyPrinter extends JCTree.Visitor {
 			print(tree.implementing, ", ");
 		}
 		
+		List<JCExpression> permitting = readObject(tree, "permitting", List.<JCExpression>nil());
+		if (permitting.nonEmpty()) {
+			print(" permits ");
+			print(permitting, ", ");
+		}
+		
 		println(" {");
 		indent++;
 		printClassMembers(tree.defs, isEnum, isInterface);
@@ -1016,6 +1022,8 @@ public class PrettyPrinter extends JCTree.Visitor {
 		if ((v & TRANSIENT) != 0) print("transient ");
 		if ((v & NATIVE) != 0) print("native ");
 		if ((v & ABSTRACT) != 0) print("abstract ");
+		if ((v & SEALED) != 0) print("sealed ");
+		if ((v & NON_SEALED) != 0) print("non-sealed ");
 		if ((v & STRICTFP) != 0) print("strictfp ");
 		if ((v & DEFAULT) != 0 && (v & INTERFACE) == 0) print("default ");
 	}
@@ -1324,13 +1332,16 @@ public class PrettyPrinter extends JCTree.Visitor {
 	@Override public void visitCase(JCCase tree) {
 		// Starting with JDK12, switches allow multiple expressions per case, and can take the form of an expression (preview feature).
 		
-		List<JCExpression> pats = readObject(tree, "pats", null); // JDK 12+
+		List<JCTree> pats = readObject(tree, "labels", null); // JDK 17+
+		if (pats == null) {
+			pats = readObject(tree, "pats", null); // JDK 12-17
+		}
 		if (pats == null) {
-			JCExpression pat = readObject(tree, "pat", null); // JDK -11
-			pats = pat == null ? List.<JCExpression>nil() : List.of(pat);
+			JCTree pat = readObject(tree, "pat", null); // JDK -11
+			pats = pat == null ? List.<JCTree>nil() : List.of(pat);
 		}
 		
-		if (pats.isEmpty()) {
+		if (pats.isEmpty() || pats.size() == 1 && pats.head.getClass().getName().endsWith("$JCDefaultCaseLabel")) {
 			aPrint("default");
 		} else {
 			aPrint("case ");
@@ -1421,6 +1432,22 @@ public class PrettyPrinter extends JCTree.Visitor {
 		print((Name) readObject(var, "name", null));
 	}
 	
+	void printDefaultCase(JCTree tree) {
+		print("default");
+	}
+	
+	void printGuardPattern(JCTree tree) {
+		print((JCTree) readObject(tree, "patt", null));
+		print(" && ");
+		print((JCExpression) readObject(tree, "expr", null));
+	}
+	
+	void printParenthesizedPattern(JCTree tree) {
+		print("(");
+		print((JCTree) readObject(tree, "pattern", null));
+		print(")");
+	}
+	
 	@Override public void visitTry(JCTry tree) {
 		aPrint("try ");
 		List<?> resources = readObject(tree, "resources", List.nil());
@@ -1639,6 +1666,12 @@ public class PrettyPrinter extends JCTree.Visitor {
 			printYieldExpression(tree);
 		} else if (className.endsWith("$JCBindingPattern")) { // Introduced as preview in JDK14
 			printBindingPattern(tree);
+		} else if (className.endsWith("$JCDefaultCaseLabel")) { // Introduced in JDK17
+			printDefaultCase(tree);
+		} else if (className.endsWith("$JCGuardPattern")) { // Introduced in JDK17
+			printGuardPattern(tree);
+		} else if (className.endsWith("$JCParenthesizedPattern")) { // Introduced in JDK17
+			printParenthesizedPattern(tree);
 		} else {
 			throw new AssertionError("Unhandled tree type: " + tree.getClass() + ": " + tree);
 		}
diff --git a/src/utils/lombok/javac/Java14Flags.java b/src/utils/lombok/javac/Java14Flags.java
deleted file mode 100644
index 0d565dca..00000000
--- a/src/utils/lombok/javac/Java14Flags.java
+++ /dev/null
@@ -1,26 +0,0 @@
-package lombok.javac;
-
-public class Java14Flags {
-	private Java14Flags() { }
-
-	/**
-	 * Flag to indicate that a class is a record. The flag is also used to mark fields that are
-	 * part of the state vector of a record and to mark the canonical constructor
-	 */
-	public static final long RECORD = 1L<<61; // ClassSymbols, MethodSymbols and VarSymbols
-
-	/**
-	 * Flag to mark a record constructor as a compact one
-	 */
-	public static final long COMPACT_RECORD_CONSTRUCTOR = 1L<<51; // MethodSymbols only
-
-	/**
-	 * Flag to mark a record field that was not initialized in the compact constructor
-	 */
-	public static final long UNINITIALIZED_FIELD= 1L<<51; // VarSymbols only
-
-	/** Flag is set for compiler-generated record members, it could be appplied to
-	 *  accessors and fields
-	 */
-	public static final int GENERATED_MEMBER = 1<<24; // MethodSymbols and VarSymbols
-}
diff --git a/src/utils/lombok/javac/Javac.java b/src/utils/lombok/javac/Javac.java
index d9fcc4f2..3fa0fbb5 100644
--- a/src/utils/lombok/javac/Javac.java
+++ b/src/utils/lombok/javac/Javac.java
@@ -80,6 +80,8 @@ public class Javac {
 	public static final long COMPACT_RECORD_CONSTRUCTOR = 1L << 51; // MethodSymbols (the 'implicit' many-args constructor that records have)
 	public static final long UNINITIALIZED_FIELD = 1L << 51; // VarSymbols (To identify fields that the compact record constructor won't initialize)
 	public static final long GENERATED_MEMBER = 1L << 24; // MethodSymbols, VarSymbols (marks methods and the constructor generated in records)
+	public static final long SEALED = 1L << 62; // ClassSymbols (Flag to indicate sealed class/interface declaration)
+	public static final long NON_SEALED = 1L << 63; // ClassSymbols (Flag to indicate that the class/interface was declared with the non-sealed modifier)
 	
 	/**
 	 * Returns the version of this java compiler, i.e. the JDK that it shipped in. For example, for javac v1.7, this returns {@code 7}.
diff --git a/src/utils/lombok/javac/JavacTreeMaker.java b/src/utils/lombok/javac/JavacTreeMaker.java
index 30d71606..d369b4e4 100644
--- a/src/utils/lombok/javac/JavacTreeMaker.java
+++ b/src/utils/lombok/javac/JavacTreeMaker.java
@@ -607,7 +607,19 @@ public class JavacTreeMaker {
 	
 	public JCCase Case(JCExpression pat, List<JCStatement> stats) {
 		if (tryResolve(Case11)) return invoke(Case11, pat, stats);
-		return invoke(Case12.Case12, Case12.CASE_KIND_STATEMENT, pat == null ? com.sun.tools.javac.util.List.nil() : com.sun.tools.javac.util.List.of(pat), stats, null);
+		List<JCTree> labels;
+		if (pat == null) {
+			labels = tryResolve(DefaultCaseLabel) ? List.of(DefaultCaseLabel()) : List.<JCTree>nil();
+		} else {
+			labels = List.<JCTree>of(pat);
+		}
+		return invoke(Case12.Case12, Case12.CASE_KIND_STATEMENT, labels, stats, null);
+	}
+	
+	//javac versions: 17
+	private static final MethodId<JCTree> DefaultCaseLabel = MethodId("DefaultCaseLabel", JCTree.class);
+	public JCTree DefaultCaseLabel() {
+		return invoke(DefaultCaseLabel);
 	}
 	
 	//javac versions: 6-8