https://github.com/eclipse/eclipse-collections/eclipse-collections: Eclipse Collections is a collections framework for Java. It has JDK-compatible List, Set and Map implementations with a rich API and set of utility classes that work with any JDK compatible Collections, Arrays, Maps or Strings. The iteration protocol was inspired by the Smalltalk collection framework.
  • Craig P. Motlin
  • Donald Raab
  • Mohammad A. Rezaei
  • Hiroshi Ito
  • Nikhil J. Nanivadekar 
public abstract class org.eclipse.collections.impl.map.mutable.UnifiedMap$PositionalIterator<T> implements java.util.Iterator<T>
  minor version: 0
  major version: 59
  flags: flags: (0x0421) ACC_PUBLIC, ACC_SUPER, ACC_ABSTRACT
  this_class: org.eclipse.collections.impl.map.mutable.UnifiedMap$PositionalIterator
  super_class: java.lang.Object
{
  protected int count;
    descriptor: I
    flags: (0x0004) ACC_PROTECTED

  protected int position;
    descriptor: I
    flags: (0x0004) ACC_PROTECTED

  protected int chainPosition;
    descriptor: I
    flags: (0x0004) ACC_PROTECTED

  protected boolean lastReturned;
    descriptor: Z
    flags: (0x0004) ACC_PROTECTED

  final org.eclipse.collections.impl.map.mutable.UnifiedMap this$0;
    descriptor: Lorg/eclipse/collections/impl/map/mutable/UnifiedMap;
    flags: (0x1010) ACC_FINAL, ACC_SYNTHETIC

  protected void <init>(org.eclipse.collections.impl.map.mutable.UnifiedMap);
    descriptor: (Lorg/eclipse/collections/impl/map/mutable/UnifiedMap;)V
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // org.eclipse.collections.impl.map.mutable.UnifiedMap$PositionalIterator this
         0: .line 2378
            aload 0 /* this */
            aload 1
            putfield org.eclipse.collections.impl.map.mutable.UnifiedMap$PositionalIterator.this$0:Lorg/eclipse/collections/impl/map/mutable/UnifiedMap;
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
            return
        end local 0 // org.eclipse.collections.impl.map.mutable.UnifiedMap$PositionalIterator this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/eclipse/collections/impl/map/mutable/UnifiedMap<TK;TV;>.PositionalIterator<TT;>;
    MethodParameters:
        Name  Flags
      this$0  final

  public boolean hasNext();
    descriptor: ()Z
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // org.eclipse.collections.impl.map.mutable.UnifiedMap$PositionalIterator this
         0: .line 2388
            aload 0 /* this */
            getfield org.eclipse.collections.impl.map.mutable.UnifiedMap$PositionalIterator.count:I
            aload 0 /* this */
            getfield org.eclipse.collections.impl.map.mutable.UnifiedMap$PositionalIterator.this$0:Lorg/eclipse/collections/impl/map/mutable/UnifiedMap;
            invokevirtual org.eclipse.collections.impl.map.mutable.UnifiedMap.size:()I
            if_icmpge 1
            iconst_1
            ireturn
      StackMap locals:
      StackMap stack:
         1: iconst_0
            ireturn
        end local 0 // org.eclipse.collections.impl.map.mutable.UnifiedMap$PositionalIterator this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Lorg/eclipse/collections/impl/map/mutable/UnifiedMap<TK;TV;>.PositionalIterator<TT;>;

  public void remove();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=4, locals=3, args_size=1
        start local 0 // org.eclipse.collections.impl.map.mutable.UnifiedMap$PositionalIterator this
         0: .line 2394
            aload 0 /* this */
            getfield org.eclipse.collections.impl.map.mutable.UnifiedMap$PositionalIterator.lastReturned:Z
            ifne 2
         1: .line 2396
            new java.lang.IllegalStateException
            dup
            ldc "next() must be called as many times as remove()"
            invokespecial java.lang.IllegalStateException.<init>:(Ljava/lang/String;)V
            athrow
         2: .line 2398
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            dup
            getfield org.eclipse.collections.impl.map.mutable.UnifiedMap$PositionalIterator.count:I
            iconst_1
            isub
            putfield org.eclipse.collections.impl.map.mutable.UnifiedMap$PositionalIterator.count:I
         3: .line 2399
            aload 0 /* this */
            getfield org.eclipse.collections.impl.map.mutable.UnifiedMap$PositionalIterator.this$0:Lorg/eclipse/collections/impl/map/mutable/UnifiedMap;
            dup
            getfield org.eclipse.collections.impl.map.mutable.UnifiedMap.occupied:I
            iconst_1
            isub
            putfield org.eclipse.collections.impl.map.mutable.UnifiedMap.occupied:I
         4: .line 2401
            aload 0 /* this */
            getfield org.eclipse.collections.impl.map.mutable.UnifiedMap$PositionalIterator.chainPosition:I
            ifeq 7
         5: .line 2403
            aload 0 /* this */
            invokevirtual org.eclipse.collections.impl.map.mutable.UnifiedMap$PositionalIterator.removeFromChain:()V
         6: .line 2404
            return
         7: .line 2407
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield org.eclipse.collections.impl.map.mutable.UnifiedMap$PositionalIterator.position:I
            iconst_2
            isub
            istore 1 /* pos */
        start local 1 // int pos
         8: .line 2408
            aload 0 /* this */
            getfield org.eclipse.collections.impl.map.mutable.UnifiedMap$PositionalIterator.this$0:Lorg/eclipse/collections/impl/map/mutable/UnifiedMap;
            getfield org.eclipse.collections.impl.map.mutable.UnifiedMap.table:[Ljava/lang/Object;
            iload 1 /* pos */
            aaload
            astore 2 /* cur */
        start local 2 // java.lang.Object cur
         9: .line 2409
            aload 2 /* cur */
            getstatic org.eclipse.collections.impl.map.mutable.UnifiedMap.CHAINED_KEY:Ljava/lang/Object;
            if_acmpne 12
        10: .line 2411
            aload 0 /* this */
            aload 0 /* this */
            getfield org.eclipse.collections.impl.map.mutable.UnifiedMap$PositionalIterator.this$0:Lorg/eclipse/collections/impl/map/mutable/UnifiedMap;
            getfield org.eclipse.collections.impl.map.mutable.UnifiedMap.table:[Ljava/lang/Object;
            iload 1 /* pos */
            iconst_1
            iadd
            aaload
            checkcast java.lang.Object[]
            iload 1 /* pos */
            invokevirtual org.eclipse.collections.impl.map.mutable.UnifiedMap$PositionalIterator.removeLastFromChain:([Ljava/lang/Object;I)V
        11: .line 2412
            return
        12: .line 2414
      StackMap locals: int java.lang.Object
      StackMap stack:
            aload 0 /* this */
            getfield org.eclipse.collections.impl.map.mutable.UnifiedMap$PositionalIterator.this$0:Lorg/eclipse/collections/impl/map/mutable/UnifiedMap;
            getfield org.eclipse.collections.impl.map.mutable.UnifiedMap.table:[Ljava/lang/Object;
            iload 1 /* pos */
            aconst_null
            aastore
        13: .line 2415
            aload 0 /* this */
            getfield org.eclipse.collections.impl.map.mutable.UnifiedMap$PositionalIterator.this$0:Lorg/eclipse/collections/impl/map/mutable/UnifiedMap;
            getfield org.eclipse.collections.impl.map.mutable.UnifiedMap.table:[Ljava/lang/Object;
            iload 1 /* pos */
            iconst_1
            iadd
            aconst_null
            aastore
        14: .line 2416
            aload 0 /* this */
            iload 1 /* pos */
            putfield org.eclipse.collections.impl.map.mutable.UnifiedMap$PositionalIterator.position:I
        15: .line 2417
            aload 0 /* this */
            iconst_0
            putfield org.eclipse.collections.impl.map.mutable.UnifiedMap$PositionalIterator.lastReturned:Z
        16: .line 2418
            return
        end local 2 // java.lang.Object cur
        end local 1 // int pos
        end local 0 // org.eclipse.collections.impl.map.mutable.UnifiedMap$PositionalIterator this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0   17     0  this  Lorg/eclipse/collections/impl/map/mutable/UnifiedMap<TK;TV;>.PositionalIterator<TT;>;
            8   17     1   pos  I
            9   17     2   cur  Ljava/lang/Object;

  protected void removeFromChain();
    descriptor: ()V
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=5, locals=4, args_size=1
        start local 0 // org.eclipse.collections.impl.map.mutable.UnifiedMap$PositionalIterator this
         0: .line 2422
            aload 0 /* this */
            getfield org.eclipse.collections.impl.map.mutable.UnifiedMap$PositionalIterator.this$0:Lorg/eclipse/collections/impl/map/mutable/UnifiedMap;
            getfield org.eclipse.collections.impl.map.mutable.UnifiedMap.table:[Ljava/lang/Object;
            aload 0 /* this */
            getfield org.eclipse.collections.impl.map.mutable.UnifiedMap$PositionalIterator.position:I
            iconst_1
            iadd
            aaload
            checkcast java.lang.Object[]
            astore 1 /* chain */
        start local 1 // java.lang.Object[] chain
         1: .line 2423
            aload 0 /* this */
            getfield org.eclipse.collections.impl.map.mutable.UnifiedMap$PositionalIterator.chainPosition:I
            iconst_2
            isub
            istore 2 /* pos */
        start local 2 // int pos
         2: .line 2424
            aload 0 /* this */
            getfield org.eclipse.collections.impl.map.mutable.UnifiedMap$PositionalIterator.chainPosition:I
            istore 3 /* replacePos */
        start local 3 // int replacePos
         3: .line 2425
            goto 5
         4: .line 2427
      StackMap locals: java.lang.Object[] int int
      StackMap stack:
            iinc 3 /* replacePos */ 2
         5: .line 2425
      StackMap locals:
      StackMap stack:
            iload 3 /* replacePos */
            aload 1 /* chain */
            arraylength
            iconst_2
            isub
            if_icmpge 6
            aload 1 /* chain */
            iload 3 /* replacePos */
            iconst_2
            iadd
            aaload
            ifnonnull 4
         6: .line 2429
      StackMap locals:
      StackMap stack:
            aload 1 /* chain */
            iload 2 /* pos */
            aload 1 /* chain */
            iload 3 /* replacePos */
            aaload
            aastore
         7: .line 2430
            aload 1 /* chain */
            iload 2 /* pos */
            iconst_1
            iadd
            aload 1 /* chain */
            iload 3 /* replacePos */
            iconst_1
            iadd
            aaload
            aastore
         8: .line 2431
            aload 1 /* chain */
            iload 3 /* replacePos */
            aconst_null
            aastore
         9: .line 2432
            aload 1 /* chain */
            iload 3 /* replacePos */
            iconst_1
            iadd
            aconst_null
            aastore
        10: .line 2433
            aload 0 /* this */
            iload 2 /* pos */
            putfield org.eclipse.collections.impl.map.mutable.UnifiedMap$PositionalIterator.chainPosition:I
        11: .line 2434
            aload 0 /* this */
            iconst_0
            putfield org.eclipse.collections.impl.map.mutable.UnifiedMap$PositionalIterator.lastReturned:Z
        12: .line 2435
            return
        end local 3 // int replacePos
        end local 2 // int pos
        end local 1 // java.lang.Object[] chain
        end local 0 // org.eclipse.collections.impl.map.mutable.UnifiedMap$PositionalIterator this
      LocalVariableTable:
        Start  End  Slot        Name  Signature
            0   13     0        this  Lorg/eclipse/collections/impl/map/mutable/UnifiedMap<TK;TV;>.PositionalIterator<TT;>;
            1   13     1       chain  [Ljava/lang/Object;
            2   13     2         pos  I
            3   13     3  replacePos  I

  protected void removeLastFromChain(java.lang.Object[], int);
    descriptor: ([Ljava/lang/Object;I)V
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=3, locals=4, args_size=3
        start local 0 // org.eclipse.collections.impl.map.mutable.UnifiedMap$PositionalIterator this
        start local 1 // java.lang.Object[] chain
        start local 2 // int tableIndex
         0: .line 2439
            aload 1 /* chain */
            arraylength
            iconst_2
            isub
            istore 3 /* pos */
        start local 3 // int pos
         1: .line 2440
            goto 3
         2: .line 2442
      StackMap locals: int
      StackMap stack:
            iinc 3 /* pos */ -2
         3: .line 2440
      StackMap locals:
      StackMap stack:
            aload 1 /* chain */
            iload 3 /* pos */
            aaload
            ifnull 2
         4: .line 2444
            iload 3 /* pos */
            ifne 8
         5: .line 2446
            aload 0 /* this */
            getfield org.eclipse.collections.impl.map.mutable.UnifiedMap$PositionalIterator.this$0:Lorg/eclipse/collections/impl/map/mutable/UnifiedMap;
            getfield org.eclipse.collections.impl.map.mutable.UnifiedMap.table:[Ljava/lang/Object;
            iload 2 /* tableIndex */
            aconst_null
            aastore
         6: .line 2447
            aload 0 /* this */
            getfield org.eclipse.collections.impl.map.mutable.UnifiedMap$PositionalIterator.this$0:Lorg/eclipse/collections/impl/map/mutable/UnifiedMap;
            getfield org.eclipse.collections.impl.map.mutable.UnifiedMap.table:[Ljava/lang/Object;
            iload 2 /* tableIndex */
            iconst_1
            iadd
            aconst_null
            aastore
         7: .line 2448
            goto 10
         8: .line 2451
      StackMap locals:
      StackMap stack:
            aload 1 /* chain */
            iload 3 /* pos */
            aconst_null
            aastore
         9: .line 2452
            aload 1 /* chain */
            iload 3 /* pos */
            iconst_1
            iadd
            aconst_null
            aastore
        10: .line 2454
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            iconst_0
            putfield org.eclipse.collections.impl.map.mutable.UnifiedMap$PositionalIterator.lastReturned:Z
        11: .line 2455
            return
        end local 3 // int pos
        end local 2 // int tableIndex
        end local 1 // java.lang.Object[] chain
        end local 0 // org.eclipse.collections.impl.map.mutable.UnifiedMap$PositionalIterator this
      LocalVariableTable:
        Start  End  Slot        Name  Signature
            0   12     0        this  Lorg/eclipse/collections/impl/map/mutable/UnifiedMap<TK;TV;>.PositionalIterator<TT;>;
            0   12     1       chain  [Ljava/lang/Object;
            0   12     2  tableIndex  I
            1   12     3         pos  I
    MethodParameters:
            Name  Flags
      chain       
      tableIndex  
}
Signature: <T:Ljava/lang/Object;>Ljava/lang/Object;Ljava/util/Iterator<TT;>;
SourceFile: "UnifiedMap.java"
NestHost: org.eclipse.collections.impl.map.mutable.UnifiedMap
InnerClasses:
  protected abstract PositionalIterator = org.eclipse.collections.impl.map.mutable.UnifiedMap$PositionalIterator of org.eclipse.collections.impl.map.mutable.UnifiedMap