dx/src/com/android/jack/dx/io/Annotation.java

/*
 * Copyright (C) 2011 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.android.jack.dx.io;

import com.android.jack.dx.util.Unsigned;

/**
 * An annotation.
 */
public final class Annotation implements Comparable<Annotation> {
  private final DexBuffer buffer;
  private final byte visibility;
  private final int typeIndex;
  private final int[] names;
  private final EncodedValue[] values;

  public Annotation(DexBuffer buffer, byte visibility, int typeIndex, int[] names,
      EncodedValue[] values) {
    this.buffer = buffer;
    this.visibility = visibility;
    this.typeIndex = typeIndex;
    this.names = names;
    this.values = values;
  }

  public byte getVisibility() {
    return visibility;
  }

  public int getTypeIndex() {
    return typeIndex;
  }

  public int[] getNames() {
    return names;
  }

  public EncodedValue[] getValues() {
    return values;
  }

  public void writeTo(DexBuffer.Section out) {
    out.writeByte(visibility);
    out.writeUleb128(typeIndex);
    out.writeUleb128(names.length);
    for (int i = 0; i < names.length; i++) {
      out.writeUleb128(names[i]);
      values[i].writeTo(out);
    }
  }

  @Override
  public int compareTo(Annotation other) {
    if (typeIndex != other.typeIndex) {
      return Unsigned.compare(typeIndex, other.typeIndex);
    }
    int size = Math.min(names.length, other.names.length);
    for (int i = 0; i < size; i++) {
      if (names[i] != other.names[i]) {
        return Unsigned.compare(names[i], other.names[i]);
      }
      int compare = values[i].compareTo(other.values[i]);
      if (compare != 0) {
        return compare;
      }
    }
    return names.length - other.names.length;
  }

  @Override
  public String toString() {
    if (buffer == null) {
      return visibility + " " + typeIndex;
    }

    StringBuilder result = new StringBuilder();
    result.append(visibility);
    result.append(" ");
    result.append(buffer.typeNames().get(typeIndex));
    result.append("[");
    for (int i = 0; i < names.length; i++) {
      if (i > 0) {
        result.append(", ");
      }
      result.append(buffer.strings().get(names[i]));
      result.append("=");
      result.append(values[i]);
    }
    result.append("]");
    return result.toString();
  }
}