content: /*
   * Copyright (C) 2007 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.dex.Leb128;
  import com.taobao.android.dx.rop.code.AccessFlags;
  import com.taobao.android.dx.rop.cst.CstFieldRef;
  import com.taobao.android.dx.rop.cst.CstString;
  import com.taobao.android.dx.util.AnnotatedOutput;
  import com.taobao.android.dx.util.Hex;
  import java.io.PrintWriter;
  
  /**
   * Representation of a field of a class, of any sort.
   */
  public final class EncodedField extends EncodedMember
          implements Comparable<EncodedField> {
      /** {@code non-null;} constant for the field */
      private final CstFieldRef field;
  
      /**
       * Constructs an instance.
       *
       * @param field {@code non-null;} constant for the field
       * @param accessFlags access flags
       */
      public EncodedField(CstFieldRef field, int accessFlags) {
          super(accessFlags);
  
          if (field == null) {
              throw new NullPointerException("field == null");
          }
  
          /*
           * TODO: Maybe check accessFlags, at least for
           * easily-checked stuff?
           */
  
          this.field = field;
      }
  
      /** {@inheritDoc} */
      public int hashCode() {
          return field.hashCode();
      }
  
      /** {@inheritDoc} */
      public boolean equals(Object other) {
          if (! (other instanceof EncodedField)) {
              return false;
          }
  
          return compareTo((EncodedField) other) == 0;
      }
  
      /**
       * {@inheritDoc}
       *
       * <p><b>Note:</b> This compares the method constants only,
       * ignoring any associated code, because it should never be the
       * case that two different items with the same method constant
       * ever appear in the same list (or same file, even).</p>
       */
      public int compareTo(EncodedField other) {
          return field.compareTo(other.field);
      }
  
      /** {@inheritDoc} */
      @Override
      public String toString() {
          StringBuffer sb = new StringBuffer(100);
  
          sb.append(getClass().getName());
          sb.append('{');
          sb.append(Hex.u2(getAccessFlags()));
          sb.append(' ');
          sb.append(field);
          sb.append('}');
          return sb.toString();
      }
  
      /** {@inheritDoc} */
      @Override
      public void addContents(DexFile file) {
          FieldIdsSection fieldIds = file.getFieldIds();
          fieldIds.intern(field);
      }
  
      /** {@inheritDoc} */
      @Override
      public CstString getName() {
          return field.getNat().getName();
      }
  
      /** {@inheritDoc} */
      public String toHuman() {
          return field.toHuman();
      }
  
      /** {@inheritDoc} */
      @Override
      public void debugPrint(PrintWriter out, boolean verbose) {
          // TODO: Maybe put something better here?
          out.println(toString());
      }
  
      /**
       * Gets the constant for the field.
       *
       * @return {@code non-null;} the constant
       */
      public CstFieldRef getRef() {
          return field;
      }
  
      /** {@inheritDoc} */
      @Override
      public int encode(DexFile file, AnnotatedOutput out,
              int lastIndex, int dumpSeq) {
          int fieldIdx = file.getFieldIds().indexOf(field);
          int diff = fieldIdx - lastIndex;
          int accessFlags = getAccessFlags();
  
          if (out.annotates()) {
              out.annotate(0, String.format("  [%x] %s", dumpSeq,
                              field.toHuman()));
              out.annotate(Leb128.unsignedLeb128Size(diff),
                      "    field_idx:    " + Hex.u4(fieldIdx));
              out.annotate(Leb128.unsignedLeb128Size(accessFlags),
                      "    access_flags: " +
                      AccessFlags.fieldString(accessFlags));
          }
  
          out.writeUleb128(diff);
          out.writeUleb128(accessFlags);
  
          return fieldIdx;
      }
  }
  