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// Copyright 2000-2017 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
package org.jetbrains.java.decompiler.struct.attr;

import org.jetbrains.java.decompiler.code.BytecodeVersion;
import org.jetbrains.java.decompiler.struct.consts.ConstantPool;
import org.jetbrains.java.decompiler.util.DataInputFullStream;

import java.io.IOException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

public class StructExceptionsAttribute extends StructGeneralAttribute {

  private List throwsExceptions;

  @Override
  public void initContent(DataInputFullStream data, ConstantPool pool, BytecodeVersion version) throws IOException {
    int len = data.readUnsignedShort();
    if (len > 0) {
      throwsExceptions = new ArrayList<>(len);
      for (int i = 0; i < len; i++) {
        throwsExceptions.add(data.readUnsignedShort());
      }
    }
    else {
      throwsExceptions = Collections.emptyList();
    }
  }

  public String getExcClassname(int index, ConstantPool pool) {
    return pool.getPrimitiveConstant(throwsExceptions.get(index)).getString();
  }

  public List getThrowsExceptions() {
    return throwsExceptions;
  }
}