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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);
}
}
}
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