[jdk16] delombok

3 files changed, 55 insertions, 14 deletions

diff --git a/src/stubs/com/sun/tools/javac/parser/JavaTokenizer.java b/src/stubs/com/sun/tools/javac/parser/JavaTokenizer.java
index 7d5bbcb1..cde6b325 100644
--- a/src/stubs/com/sun/tools/javac/parser/JavaTokenizer.java
+++ b/src/stubs/com/sun/tools/javac/parser/JavaTokenizer.java
@@ -1,11 +1,15 @@
 package com.sun.tools.javac.parser;
 
+import java.nio.CharBuffer;
+
 import com.sun.tools.javac.parser.Tokens.Comment;
 import com.sun.tools.javac.parser.Tokens.Comment.CommentStyle;
 
 public class JavaTokenizer {
+	// used before java 16
 	protected UnicodeReader reader;
 	
+	// used before java 16
 	protected JavaTokenizer(ScannerFactory fac, UnicodeReader reader) {
 	}
 	
@@ -16,4 +20,17 @@ public class JavaTokenizer {
 	protected Comment processComment(int pos, int endPos, CommentStyle style) {
 		return null;
 	}
+	
+	// used in java 16
+	protected JavaTokenizer(ScannerFactory fac, char[] buf, int inputLength) {
+	}
+	
+	// used in java 16
+	protected JavaTokenizer(ScannerFactory fac, CharBuffer buf) {
+	}
+
+	// introduced in java 16
+	protected int position() {
+		return -1;
+	}
 }
diff --git a/src/utils/lombok/javac/java8/CommentCollectingScannerFactory.java b/src/utils/lombok/javac/java8/CommentCollectingScannerFactory.java
index d0cac9ad..c9ae092e 100644
--- a/src/utils/lombok/javac/java8/CommentCollectingScannerFactory.java
+++ b/src/utils/lombok/javac/java8/CommentCollectingScannerFactory.java
@@ -72,11 +72,13 @@ public class CommentCollectingScannerFactory extends ScannerFactory {
 		super(context);
 	}
 	
+	@SuppressWarnings("all")
 	@Override
 	public Scanner newScanner(CharSequence input, boolean keepDocComments) {
 		char[] array;
 		if (input instanceof CharBuffer && ((CharBuffer) input).hasArray()) {
-			array = ((CharBuffer) input).compact().flip().array();
+			// yes, the char[] cast is necessary
+			array = (char[]) ((CharBuffer) input).compact().flip().array();
 		} else {
 			array = input.toString().toCharArray();
 		}
@@ -85,6 +87,6 @@ public class CommentCollectingScannerFactory extends ScannerFactory {
 	
 	@Override
 	public Scanner newScanner(char[] input, int inputLength, boolean keepDocComments) {
-		return new CommentCollectingScanner(this, new CommentCollectingTokenizer(this, input, inputLength, findTextBlocks));
+		return new CommentCollectingScanner(this, CommentCollectingTokenizer.create(this, input, inputLength, findTextBlocks));
 	}
 }
diff --git a/src/utils/lombok/javac/java8/CommentCollectingTokenizer.java b/src/utils/lombok/javac/java8/CommentCollectingTokenizer.java
index 7f296d83..4a31fc81 100644
--- a/src/utils/lombok/javac/java8/CommentCollectingTokenizer.java
+++ b/src/utils/lombok/javac/java8/CommentCollectingTokenizer.java
@@ -23,36 +23,51 @@ package lombok.javac.java8;
 
 import java.nio.CharBuffer;
 
-import lombok.javac.CommentInfo;
-import lombok.javac.CommentInfo.EndConnection;
-import lombok.javac.CommentInfo.StartConnection;
-
 import com.sun.tools.javac.parser.JavaTokenizer;
 import com.sun.tools.javac.parser.ScannerFactory;
 import com.sun.tools.javac.parser.Tokens.Comment;
-import com.sun.tools.javac.parser.Tokens.Token;
 import com.sun.tools.javac.parser.Tokens.Comment.CommentStyle;
+import com.sun.tools.javac.parser.Tokens.Token;
 import com.sun.tools.javac.parser.UnicodeReader;
 import com.sun.tools.javac.util.List;
 import com.sun.tools.javac.util.ListBuffer;
 
+import lombok.javac.CommentInfo;
+import lombok.javac.CommentInfo.EndConnection;
+import lombok.javac.CommentInfo.StartConnection;
+
 class CommentCollectingTokenizer extends JavaTokenizer {
+	
+	private static final boolean tokenizerIsUnicodeReader = JavaTokenizer.class.getSuperclass().getSimpleName().equals("UnicodeReader");
+	
 	private int prevEndPosition = 0;
 	private final ListBuffer<CommentInfo> comments = new ListBuffer<CommentInfo>();
 	private final ListBuffer<Integer> textBlockStarts;
 	private int endComment = 0;
 	
-	CommentCollectingTokenizer(ScannerFactory fac, char[] buf, int inputLength, boolean findTextBlocks) {
+	static CommentCollectingTokenizer create(ScannerFactory fac, char[] buf, int inputLength, boolean findTextBlocks) {
+		if (tokenizerIsUnicodeReader) {
+			return new CommentCollectingTokenizer(fac, buf, inputLength, findTextBlocks, true);
+		}
+		return new CommentCollectingTokenizer(fac, buf, inputLength, findTextBlocks);
+	}
+	
+	// pre java 16
+	private CommentCollectingTokenizer(ScannerFactory fac, char[] buf, int inputLength, boolean findTextBlocks) {
 		super(fac, new PositionUnicodeReader(fac, buf, inputLength));
 		textBlockStarts = findTextBlocks ? new ListBuffer<Integer>() : null;
 	}
 
-	CommentCollectingTokenizer(ScannerFactory fac, CharBuffer buf, boolean findTextBlocks) {
-		super(fac, new PositionUnicodeReader(fac, buf));
+	// from java 16
+	private CommentCollectingTokenizer(ScannerFactory fac, char[] buf, int inputLength, boolean findTextBlocks, boolean java16Signature) {
+		super(fac, buf, inputLength);
 		textBlockStarts = findTextBlocks ? new ListBuffer<Integer>() : null;
 	}
 	
 	int pos() {
+		if (tokenizerIsUnicodeReader) {
+			return position();
+		}
 		return ((PositionUnicodeReader) reader).pos();
 	}
 	
@@ -60,7 +75,7 @@ class CommentCollectingTokenizer extends JavaTokenizer {
 		Token token = super.readToken();
 		prevEndPosition = pos();
 		if (textBlockStarts != null && (prevEndPosition - token.pos > 5) && token.getClass().getName().endsWith("$StringToken")) {
-			char[] start = reader.getRawCharacters(token.pos, token.pos + 3);
+			char[] start = reader().getRawCharacters(token.pos, token.pos + 3);
 			if (start[0] == '"' && start[1] == '"' && start[2] == '"') textBlockStarts.append(token.pos);
 		}
 		return token;
@@ -70,7 +85,7 @@ class CommentCollectingTokenizer extends JavaTokenizer {
 	protected Comment processComment(int pos, int endPos, CommentStyle style) {
 		int prevEndPos = Math.max(prevEndPosition, endComment);
 		endComment = endPos;
-		String content = new String(reader.getRawCharacters(pos, endPos));
+		String content = new String(reader().getRawCharacters(pos, endPos));
 		StartConnection start = determineStartConnection(prevEndPos, pos);
 		EndConnection end = determineEndConnection(endPos); 
 
@@ -85,7 +100,7 @@ class CommentCollectingTokenizer extends JavaTokenizer {
 		for (int i = pos;; i++) {
 			char c;
 			try {
-				c = reader.getRawCharacters(i, i + 1)[0];
+				c = reader().getRawCharacters(i, i + 1)[0];
 			} catch (IndexOutOfBoundsException e) {
 				c = '\n';
 			}
@@ -104,7 +119,7 @@ class CommentCollectingTokenizer extends JavaTokenizer {
 		if (from == to) {
 			return StartConnection.DIRECT_AFTER_PREVIOUS;
 		}
-		char[] between = reader.getRawCharacters(from, to);
+		char[] between = reader().getRawCharacters(from, to);
 		if (isNewLine(between[between.length - 1])) {
 			return StartConnection.START_OF_LINE;
 		}
@@ -128,6 +143,13 @@ class CommentCollectingTokenizer extends JavaTokenizer {
 		return textBlockStarts == null ? List.<Integer>nil() : textBlockStarts.toList();
 	}
 	
+	private UnicodeReader reader() {
+		if (tokenizerIsUnicodeReader) {
+			return (UnicodeReader) (Object) this;
+		}
+		return reader;
+	}
+	
 	static class PositionUnicodeReader extends UnicodeReader {
 		protected PositionUnicodeReader(ScannerFactory sf, char[] input, int inputLength) {
 			super(sf, input, inputLength);