content: /*
   * Copyright (C) 2008 The Android Open Source Project
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *      http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package com.taobao.android.dx.dex.file;
  
  import com.taobao.android.dx.rop.annotation.Annotations;
  import com.taobao.android.dx.rop.annotation.AnnotationsList;
  import com.taobao.android.dx.rop.cst.CstMethodRef;
  import com.taobao.android.dx.util.AnnotatedOutput;
  import com.taobao.android.dx.util.Hex;
  import com.taobao.android.dx.util.ToHuman;
  
  import java.util.ArrayList;
  
  /**
   * Association of a method and its parameter annotations.
   */
  public final class ParameterAnnotationStruct
          implements ToHuman, Comparable<ParameterAnnotationStruct> {
      /** {@code non-null;} the method in question */
      private final CstMethodRef method;
  
      /** {@code non-null;} the associated annotations list */
      private final AnnotationsList annotationsList;
  
      /** {@code non-null;} the associated annotations list, as an item */
      private final UniformListItem<AnnotationSetRefItem> annotationsItem;
  
      /**
       * Constructs an instance.
       *
       * @param method {@code non-null;} the method in question
       * @param annotationsList {@code non-null;} the associated annotations list
       * @param dexFile {@code non-null;} dex output
       */
      public ParameterAnnotationStruct(CstMethodRef method,
              AnnotationsList annotationsList, DexFile dexFile) {
          if (method == null) {
              throw new NullPointerException("method == null");
          }
  
          if (annotationsList == null) {
              throw new NullPointerException("annotationsList == null");
          }
  
          this.method = method;
          this.annotationsList = annotationsList;
  
          /*
           * Construct an item for the annotations list. TODO: This
           * requires way too much copying; fix it.
           */
  
          int size = annotationsList.size();
          ArrayList<AnnotationSetRefItem> arrayList = new
              ArrayList<AnnotationSetRefItem>(size);
  
          for (int i = 0; i < size; i++) {
              Annotations annotations = annotationsList.get(i);
              AnnotationSetItem item = new AnnotationSetItem(annotations, dexFile);
              arrayList.add(new AnnotationSetRefItem(item));
          }
  
          this.annotationsItem = new UniformListItem<AnnotationSetRefItem>(
                  ItemType.TYPE_ANNOTATION_SET_REF_LIST, arrayList);
      }
  
      /** {@inheritDoc} */
      public int hashCode() {
          return method.hashCode();
      }
  
      /** {@inheritDoc} */
      public boolean equals(Object other) {
          if (! (other instanceof ParameterAnnotationStruct)) {
              return false;
          }
  
          return method.equals(((ParameterAnnotationStruct) other).method);
      }
  
      /** {@inheritDoc} */
      public int compareTo(ParameterAnnotationStruct other) {
          return method.compareTo(other.method);
      }
  
      /** {@inheritDoc} */
      public void addContents(DexFile file) {
          MethodIdsSection methodIds = file.getMethodIds();
          MixedItemSection wordData = file.getWordData();
  
          methodIds.intern(method);
          wordData.add(annotationsItem);
      }
  
      /** {@inheritDoc} */
      public void writeTo(DexFile file, AnnotatedOutput out) {
          int methodIdx = file.getMethodIds().indexOf(method);
          int annotationsOff = annotationsItem.getAbsoluteOffset();
  
          if (out.annotates()) {
              out.annotate(0, "    " + method.toHuman());
              out.annotate(4, "      method_idx:      " + Hex.u4(methodIdx));
              out.annotate(4, "      annotations_off: " +
                      Hex.u4(annotationsOff));
          }
  
          out.writeInt(methodIdx);
          out.writeInt(annotationsOff);
      }
  
      /** {@inheritDoc} */
      public String toHuman() {
          StringBuilder sb = new StringBuilder();
  
          sb.append(method.toHuman());
          sb.append(": ");
  
          boolean first = true;
          for (AnnotationSetRefItem item : annotationsItem.getItems()) {
              if (first) {
                  first = false;
              } else {
                  sb.append(", ");
              }
              sb.append(item.toHuman());
          }
  
          return sb.toString();
      }
  
      /**
       * Gets the method this item is for.
       *
       * @return {@code non-null;} the method
       */
      public CstMethodRef getMethod() {
          return method;
      }
  
      /**
       * Gets the associated annotations list.
       *
       * @return {@code non-null;} the annotations list
       */
      public AnnotationsList getAnnotationsList() {
          return annotationsList;
      }
  }
  