[JDK9] fixing delombok’s comment integration in JDK9.

1 files changed, 70 insertions, 0 deletions

diff --git a/src/utils/lombok/javac/java9/CommentCollectingParserFactory.java b/src/utils/lombok/javac/java9/CommentCollectingParserFactory.java
new file mode 100644
index 00000000..5af4a419
--- /dev/null
+++ b/src/utils/lombok/javac/java9/CommentCollectingParserFactory.java
@@ -0,0 +1,70 @@
+/*
+ * Copyright (C) 2013-2017 The Project Lombok Authors.
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ * 
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+package lombok.javac.java9;
+
+import java.lang.reflect.Field;
+
+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.util.Context;
+
+public class CommentCollectingParserFactory extends ParserFactory {
+	private final Context context;
+	
+	static Context.Key<ParserFactory> key() {
+		return parserFactoryKey;
+	}
+	
+	protected CommentCollectingParserFactory(Context context) {
+		super(context);
+		this.context = context;
+	}
+	
+	public JavacParser newParser(CharSequence input, boolean keepDocComments, boolean keepEndPos, boolean keepLineMap) {
+		return newParser(input, keepDocComments, keepEndPos, keepLineMap, false);
+	}
+	
+	public JavacParser newParser(CharSequence input, boolean keepDocComments, boolean keepEndPos, boolean keepLineMap, boolean parseModuleInfo) {
+		ScannerFactory scannerFactory = ScannerFactory.instance(context);
+		Lexer lexer = scannerFactory.newScanner(input, true);
+		Object x = new CommentCollectingParser(this, lexer, true, keepLineMap, keepEndPos, parseModuleInfo);
+		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 javac-9's JavacParser which implements Parser.
+		//Either way this will work out.
+	}
+	
+	public static void setInCompiler(JavaCompiler compiler, Context context) {
+		context.put(CommentCollectingParserFactory.key(), (ParserFactory) null);
+		Field field;
+		try {
+			field = JavaCompiler.class.getDeclaredField("parserFactory");
+			field.setAccessible(true);
+			field.set(compiler, new CommentCollectingParserFactory(context));
+		} catch (Exception e) {
+			throw new IllegalStateException("Could not set comment sensitive parser in the compiler", e);
+		}
+	}
+}
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