java: .class stub builder API cleaned from explicit ASM dependency

java/java-psi-impl/src/com/intellij/psi/impl/compiled/ClsFileImpl.java

@@ -567,15 +567,13 @@ public class ClsFileImpl extends ClsRepositoryPsiElement<PsiClassHolderFileStub>
       return dir.findChild(baseName + "$" + innerName + ".class");
     }
 
-    @Nullable
     @Override
-    public ClassReader readerForInnerClass(VirtualFile innerClass) {
+    public void accept(VirtualFile innerClass, StubBuildingVisitor<VirtualFile> visitor) {
       try {
-        return new ClassReader(innerClass.contentsToByteArray());
-      }
-      catch (IOException e) {
-        return null;
+        byte[] bytes = innerClass.contentsToByteArray();
+        new ClassReader(bytes).accept(visitor, ClassReader.SKIP_FRAMES);
       }
+      catch (IOException ignored) { }
     }
   };
 

java/java-psi-impl/src/com/intellij/psi/impl/compiled/InnerClassSourceStrategy.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2000-2011 JetBrains s.r.o.
+ * Copyright 2000-2014 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.
@@ -13,19 +13,16 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-
-/*
- * @author max
- */
 package com.intellij.psi.impl.compiled;
 
 import org.jetbrains.annotations.Nullable;
-import org.jetbrains.org.objectweb.asm.ClassReader;
 
+/**
+ * @author max
+ */
 public interface InnerClassSourceStrategy<T> {
   @Nullable
   T findInnerClass(String name, T outerClass);
 
-  @Nullable
-  ClassReader readerForInnerClass(T innerClass);
+  void accept(T innerClass, StubBuildingVisitor<T> visitor);
 }

java/java-psi-impl/src/com/intellij/psi/impl/compiled/StubBuildingVisitor.java

@@ -56,7 +56,7 @@ public class StubBuildingVisitor<T> extends ClassVisitor {
   public static final String FLOAT_NEGATIVE_INF = "-1.0f / 0.0";
   public static final String FLOAT_NAN = "0.0f / 0.0";
 
-  public static final int ASM_API = Opcodes.ASM5;
+  private static final int ASM_API = Opcodes.ASM5;
 
   @NonNls private static final String SYNTHETIC_CLASS_INIT_METHOD = "<clinit>";
   @NonNls private static final String SYNTHETIC_INIT_METHOD = "<init>";
@@ -207,6 +207,9 @@ public class StubBuildingVisitor<T> extends ClassVisitor {
       case Opcodes.V1_7:
         return LanguageLevel.JDK_1_7;
 
+      case Opcodes.V1_8:
+        return LanguageLevel.JDK_1_8;
+
       default:
         return LanguageLevel.HIGHEST;
     }
@@ -320,14 +323,11 @@ public class StubBuildingVisitor<T> extends ClassVisitor {
       return;
     }
 
-    final T innerSource = myInnersStrategy.findInnerClass(innerName, mySource);
-    if (innerSource == null) return;
-
-    final ClassReader reader = myInnersStrategy.readerForInnerClass(innerSource);
-    if (reader == null) return;
-
-    final StubBuildingVisitor<T> classVisitor = new StubBuildingVisitor<T>(innerSource, myInnersStrategy, myResult, access, innerName);
-    reader.accept(classVisitor, ClassReader.SKIP_FRAMES);
+    T innerClass = myInnersStrategy.findInnerClass(innerName, mySource);
+    if (innerClass != null) {
+      StubBuildingVisitor<T> visitor = new StubBuildingVisitor<T>(innerClass, myInnersStrategy, myResult, access, innerName);
+      myInnersStrategy.accept(innerClass, visitor);
+    }
   }
 
   private static boolean isCorrectName(String name) {