/*
    *  Licensed to the Apache Software Foundation (ASF) under one or more
    *  contributor license agreements.  See the NOTICE file distributed with
    *  this work for additional information regarding copyright ownership.
    *  The ASF licenses this file to You 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 org.apache.commons.compress.harmony.unpack200.bytecode;
  
  import org.apache.commons.compress.harmony.unpack200.Segment;
  import org.apache.commons.compress.harmony.unpack200.SegmentConstantPool;
  
  /**
   * Tracks operands, provides methods to let other classes get next elements, and also knows about which classes have been used recently in super, this and new
   * references.
   */
  public class OperandManager {
  
      int[] bcCaseCount;
      int[] bcCaseValue;
      int[] bcByte;
      int[] bcShort;
      int[] bcLocal;
      int[] bcLabel;
      int[] bcIntRef;
      int[] bcFloatRef;
      int[] bcLongRef;
      int[] bcDoubleRef;
      int[] bcStringRef;
      int[] bcClassRef;
      int[] bcFieldRef;
      int[] bcMethodRef;
      int[] bcIMethodRef;
      int[] bcThisField;
      int[] bcSuperField;
      int[] bcThisMethod;
      int[] bcSuperMethod;
      int[] bcInitRef;
      int[] wideByteCodes;
  
      int bcCaseCountIndex;
      int bcCaseValueIndex;
      int bcByteIndex;
      int bcShortIndex;
      int bcLocalIndex;
      int bcLabelIndex;
      int bcIntRefIndex;
      int bcFloatRefIndex;
      int bcLongRefIndex;
      int bcDoubleRefIndex;
      int bcStringRefIndex;
      int bcClassRefIndex;
      int bcFieldRefIndex;
      int bcMethodRefIndex;
      int bcIMethodRefIndex;
      int bcThisFieldIndex;
      int bcSuperFieldIndex;
      int bcThisMethodIndex;
      int bcSuperMethodIndex;
      int bcInitRefIndex;
      int wideByteCodeIndex;
  
      Segment segment;
  
      String currentClass;
      String superClass;
      String newClass;
  
      public OperandManager(final int[] bcCaseCount, final int[] bcCaseValue, final int[] bcByte, final int[] bcShort, final int[] bcLocal, final int[] bcLabel,
              final int[] bcIntRef, final int[] bcFloatRef, final int[] bcLongRef, final int[] bcDoubleRef, final int[] bcStringRef, final int[] bcClassRef,
              final int[] bcFieldRef, final int[] bcMethodRef, final int[] bcIMethodRef, final int[] bcThisField, final int[] bcSuperField,
              final int[] bcThisMethod, final int[] bcSuperMethod, final int[] bcInitRef, final int[] wideByteCodes) {
          this.bcCaseCount = bcCaseCount;
          this.bcCaseValue = bcCaseValue;
          this.bcByte = bcByte;
          this.bcShort = bcShort;
          this.bcLocal = bcLocal;
          this.bcLabel = bcLabel;
          this.bcIntRef = bcIntRef;
          this.bcFloatRef = bcFloatRef;
          this.bcLongRef = bcLongRef;
          this.bcDoubleRef = bcDoubleRef;
          this.bcStringRef = bcStringRef;
          this.bcClassRef = bcClassRef;
          this.bcFieldRef = bcFieldRef;
          this.bcMethodRef = bcMethodRef;
          this.bcIMethodRef = bcIMethodRef;
  
          this.bcThisField = bcThisField;
         this.bcSuperField = bcSuperField;
         this.bcThisMethod = bcThisMethod;
         this.bcSuperMethod = bcSuperMethod;
         this.bcInitRef = bcInitRef;
         this.wideByteCodes = wideByteCodes;
     }
 
     public String getCurrentClass() {
         if (null == currentClass) {
             throw new Error("Current class not set yet");
         }
         return currentClass;
     }
 
     public String getNewClass() {
         if (null == newClass) {
             throw new Error("New class not set yet");
         }
         return newClass;
     }
 
     public String getSuperClass() {
         if (null == superClass) {
             throw new Error("SuperClass not set yet");
         }
         return superClass;
     }
 
     public SegmentConstantPool globalConstantPool() {
         return segment.getConstantPool();
     }
 
     public int nextByte() {
         return bcByte[bcByteIndex++];
     }
 
     public int nextCaseCount() {
         return bcCaseCount[bcCaseCountIndex++];
     }
 
     public int nextCaseValues() {
         return bcCaseValue[bcCaseValueIndex++];
     }
 
     public int nextClassRef() {
         return bcClassRef[bcClassRefIndex++];
     }
 
     public int nextDoubleRef() {
         return bcDoubleRef[bcDoubleRefIndex++];
     }
 
     public int nextFieldRef() {
         return bcFieldRef[bcFieldRefIndex++];
     }
 
     public int nextFloatRef() {
         return bcFloatRef[bcFloatRefIndex++];
     }
 
     public int nextIMethodRef() {
         return bcIMethodRef[bcIMethodRefIndex++];
     }
 
     public int nextInitRef() {
         return bcInitRef[bcInitRefIndex++];
     }
 
     public int nextIntRef() {
         return bcIntRef[bcIntRefIndex++];
     }
 
     public int nextLabel() {
         return bcLabel[bcLabelIndex++];
     }
 
     public int nextLocal() {
         return bcLocal[bcLocalIndex++];
     }
 
     public int nextLongRef() {
         return bcLongRef[bcLongRefIndex++];
     }
 
     public int nextMethodRef() {
         return bcMethodRef[bcMethodRefIndex++];
     }
 
     public int nextShort() {
         return bcShort[bcShortIndex++];
     }
 
     public int nextStringRef() {
         return bcStringRef[bcStringRefIndex++];
     }
 
     public int nextSuperFieldRef() {
         return bcSuperField[bcSuperFieldIndex++];
     }
 
     public int nextSuperMethodRef() {
         return bcSuperMethod[bcSuperMethodIndex++];
     }
 
     public int nextThisFieldRef() {
         return bcThisField[bcThisFieldIndex++];
     }
 
     public int nextThisMethodRef() {
         return bcThisMethod[bcThisMethodIndex++];
     }
 
     public int nextWideByteCode() {
         return wideByteCodes[wideByteCodeIndex++];
     }
 
     public void setCurrentClass(final String string) {
         currentClass = string;
     }
 
     public void setNewClass(final String string) {
         newClass = string;
     }
 
     public void setSegment(final Segment segment) {
         this.segment = segment;
     }
 
     public void setSuperClass(final String string) {
         superClass = string;
     }
 }