Log files being parsed when --ParserLogFiles is given

* The option used to noop before this commit.

Author: eregon

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/PythonLanguage.java

@@ -312,7 +312,7 @@ private static boolean mimeTypesComplete(ArrayList<String> mimeJavaStrings) {
 
     public static final TruffleString[] T_DEFAULT_PYTHON_EXTENSIONS = new TruffleString[]{T_PY_EXTENSION, tsLiteral(".pyc")};
 
-    private static final TruffleLogger LOGGER = TruffleLogger.getLogger(ID, PythonLanguage.class);
+    public static final TruffleLogger LOGGER = TruffleLogger.getLogger(ID, PythonLanguage.class);
 
     private static final LanguageReference<PythonLanguage> REFERENCE = LanguageReference.create(PythonLanguage.class);
 
@@ -671,6 +671,9 @@ public RootCallTarget parse(PythonContext context, Source source, InputType type
                     EnumSet<FutureFeature> futureFeatures) {
         RaisePythonExceptionErrorCallback errorCb = new RaisePythonExceptionErrorCallback(source, PythonOptions.isPExceptionWithJavaStacktrace(this));
         try {
+            if (context.getEnv().getOptions().get(PythonOptions.ParserLogFiles)) {
+                LOGGER.log(Level.FINE, () -> "parse '" + source.getName() + "'");
+            }
             Parser parser = Compiler.createParser(source.getCharacters().toString(), errorCb, type, interactiveTerminal);
             ModTy mod = (ModTy) parser.parse();
             assert mod != null;

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/modules/BuiltinFunctions.java

@@ -109,6 +109,7 @@
 import java.util.Arrays;
 import java.util.EnumSet;
 import java.util.List;
+import java.util.logging.Level;
 
 import com.oracle.graal.python.PythonFileDetector;
 import com.oracle.graal.python.PythonLanguage;
@@ -1079,6 +1080,9 @@ Object compile(TruffleString expression, TruffleString filename, TruffleString m
                 if (featureVersion < 7) {
                     compilerFlags.add(AbstractParser.Flags.ASYNC_HACKS);
                 }
+                if (context.getEnv().getOptions().get(PythonOptions.ParserLogFiles)) {
+                    PythonLanguage.LOGGER.log(Level.FINE, () -> "parse '" + source.getName() + "'");
+                }
                 Parser parser = Compiler.createParser(code.toJavaStringUncached(), errorCb, type, compilerFlags, featureVersion);
                 ModTy mod = (ModTy) parser.parse();
                 errorCb.triggerDeprecationWarnings();