java-decompiler: class name logging on non-fatal errors

src/org/jetbrains/java/decompiler/main/ClassesProcessor.java

@@ -236,6 +236,7 @@ public class ClassesProcessor {
       return;
     }
 
+    DecompilerContext.getLogger().startReadingClass(cl.qualifiedName);
     try {
       ImportCollector importCollector = new ImportCollector(root);
       DecompilerContext.setImportCollector(importCollector);
@@ -291,6 +292,7 @@ public class ClassesProcessor {
     }
     finally {
       destroyWrappers(root);
+      DecompilerContext.getLogger().endReadingClass();
     }
   }
 

src/org/jetbrains/java/decompiler/main/decompiler/PrintStreamLogger.java

@@ -33,7 +33,7 @@ public class PrintStreamLogger extends IFernflowerLogger {
   @Override
   public void writeMessage(String message, Severity severity) {
     if (accepts(severity)) {
-      stream.println(InterpreterUtil.getIndentString(indent) + severity.name() + ": " + message);
+      stream.println(severity.prefix + InterpreterUtil.getIndentString(indent) + message);
     }
   }
 
@@ -45,36 +45,50 @@ public class PrintStreamLogger extends IFernflowerLogger {
     }
   }
 
+  @Override
+  public void startReadingClass(String className) {
+    writeMessage("Decompiling class " + className, Severity.INFO);
+    ++indent;
+  }
+
+  @Override
+  public void endReadingClass() {
+    --indent;
+    writeMessage("... done", Severity.INFO);
+  }
+
   @Override
   public void startClass(String className) {
-    writeMessage("Processing class " + className + " ...", Severity.INFO);
+    writeMessage("Processing class " + className, Severity.TRACE);
     ++indent;
   }
 
   @Override
   public void endClass() {
     --indent;
-    writeMessage("... proceeded.", Severity.INFO);
+    writeMessage("... proceeded", Severity.TRACE);
+  }
+
+  @Override
+  public void startMethod(String methodName) {
+    writeMessage("Processing method " + methodName, Severity.TRACE);
+    ++indent;
+  }
+
+  public void endMethod() {
+    --indent;
+    writeMessage("... proceeded", Severity.TRACE);
   }
 
   @Override
   public void startWriteClass(String className) {
-    writeMessage("Writing class " + className + " ...", Severity.INFO);
+    writeMessage("Writing class " + className, Severity.TRACE);
     ++indent;
   }
 
   @Override
   public void endWriteClass() {
     --indent;
-    writeMessage("... written.", Severity.INFO);
+    writeMessage("... written", Severity.TRACE);
-  }
-
-  @Override
-  public void startMethod(String methodName) {
-    writeMessage("Processing method " + methodName + " ...", Severity.INFO);
-  }
-
-  public void endMethod() {
-    writeMessage("... proceeded.", Severity.INFO);
   }
 }

src/org/jetbrains/java/decompiler/main/extern/IFernflowerLogger.java

@@ -18,7 +18,13 @@ package org.jetbrains.java.decompiler.main.extern;
 public abstract class IFernflowerLogger {
 
   public enum Severity {
-    TRACE, INFO, WARN, ERROR
+    TRACE("TRACE: "), INFO("INFO:  "), WARN("WARN:  "), ERROR("ERROR: ");
+
+    public final String prefix;
+
+    Severity(String prefix) {
+      this.prefix = prefix;
+    }
   }
 
   private Severity severity = Severity.INFO;
@@ -35,15 +41,19 @@ public abstract class IFernflowerLogger {
 
   public abstract void writeMessage(String message, Throwable t);
 
+  public void startReadingClass(String className) { }
+
+  public void endReadingClass() { }
+
   public void startClass(String className) { }
 
   public void endClass() { }
 
-  public void startWriteClass(String className) { }
-
-  public void endWriteClass() { }
-
   public void startMethod(String methodName) { }
 
   public void endMethod() { }
+
+  public void startWriteClass(String className) { }
+
+  public void endWriteClass() { }
 }