1 files changed, 52 insertions, 0 deletions
diff --git a/src/utils/lombok/javac/java8/CommentCollectingParserFactory.java b/src/utils/lombok/javac/java8/CommentCollectingParserFactory.java
new file mode 100644
index 00000000..594ff8ba
--- /dev/null
+++ b/src/utils/lombok/javac/java8/CommentCollectingParserFactory.java
@@ -0,0 +1,52 @@
+package lombok.javac.java8;
+
+import java.lang.reflect.Field;
+import java.util.List;
+import java.util.Map;
+
+import lombok.javac.CommentInfo;
+
+import com.sun.tools.javac.main.JavaCompiler;
+import com.sun.tools.javac.parser.JavacParser;
+import com.sun.tools.javac.parser.Lexer;
+import com.sun.tools.javac.parser.ParserFactory;
+import com.sun.tools.javac.parser.ScannerFactory;
+import com.sun.tools.javac.tree.JCTree.JCCompilationUnit;
+import com.sun.tools.javac.util.Context;
+
+public class CommentCollectingParserFactory extends ParserFactory {
+	private final Map<JCCompilationUnit, List<CommentInfo>> commentsMap;
+	private final Context context;
+	
+	static Context.Key<ParserFactory> key() {
+		return parserFactoryKey;
+	}
+	
+	protected CommentCollectingParserFactory(Context context, Map<JCCompilationUnit, List<CommentInfo>> commentsMap) {
+		super(context);
+		this.context = context;
+		this.commentsMap = commentsMap;
+	}
+	
+	public JavacParser newParser(CharSequence input, boolean keepDocComments, boolean keepEndPos, boolean keepLineMap) {
+		ScannerFactory scannerFactory = ScannerFactory.instance(context);
+		Lexer lexer = scannerFactory.newScanner(input, true);
+		Object x = new CommentCollectingParser(this, lexer, true, keepLineMap, keepEndPos, commentsMap);
+		return (JavacParser) x;
+		// CCP is based on a stub which extends nothing, but at runtime the stub is replaced with either
+		//javac6's EndPosParser which extends Parser, or javac8's JavacParser which implements Parser.
+		//Either way this will work out.
+	}
+	
+	public static void setInCompiler(JavaCompiler compiler, Context context, Map<JCCompilationUnit, List<CommentInfo>> commentsMap) {
+		context.put(CommentCollectingParserFactory.key(), (ParserFactory)null);
+		Field field;
+		try {
+			field = JavaCompiler.class.getDeclaredField("parserFactory");
+			field.setAccessible(true);
+			field.set(compiler, new CommentCollectingParserFactory(context, commentsMap));
+		} catch (Exception e) {
+			throw new IllegalStateException("Could not set comment sensitive parser in the compiler", e);
+		}
+	}
+}
+\ No newline at end of file