toString implementations for easier debug

java/debugger/impl/src/com/intellij/debugger/engine/evaluation/expression/DisableGC.java

@@ -46,4 +46,9 @@ public class DisableGC implements Evaluator{
   public Modifier getModifier() {
     return myDelegate.getModifier();
   }
+
+  @Override
+  public String toString() {
+    return "NoGC -> " + myDelegate;
+  }
 }

java/debugger/impl/src/com/intellij/debugger/engine/evaluation/expression/LiteralEvaluator.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2000-2009 JetBrains s.r.o.
+ * Copyright 2000-2015 JetBrains s.r.o.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -66,4 +66,9 @@ class LiteralEvaluator implements Evaluator {
     throw EvaluateExceptionUtil
       .createEvaluateException(DebuggerBundle.message("evaluation.error.unknown.expression.type", myExpectedType));
   }
+
+  @Override
+  public String toString() {
+    return myValue.toString();
+  }
 }

java/debugger/impl/src/com/intellij/debugger/engine/evaluation/expression/LocalVariableEvaluator.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2000-2009 JetBrains s.r.o.
+ * Copyright 2000-2015 JetBrains s.r.o.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -156,4 +156,9 @@ class LocalVariableEvaluator implements Evaluator {
     }
     return modifier;
   }
+
+  @Override
+  public String toString() {
+    return myLocalVariableName;
+  }
 }

java/debugger/impl/src/com/intellij/debugger/engine/evaluation/expression/MethodEvaluator.java

@@ -211,4 +211,9 @@ public class MethodEvaluator implements Evaluator {
     }
     return null;
   }
+
+  @Override
+  public String toString() {
+    return "call " + myMethodName;
+  }
 }