http://xmlgraphics.apache.org/fop/: Apache FOP (Formatting Objects Processor) is the world's first print formatter driven by XSL formatting objects (XSL-FO) and the world's first output independent formatter. It is a Java application that reads a formatting object (FO) tree and renders the resulting pages to a specified output. Output formats currently supported include PDF, PCL, PS, AFP, TIFF, PNG, SVG, XML (area tree representation), Print, AWT and TXT. The primary output target is PDF. (Apache Software Foundation) 
public class org.apache.fop.area.MainReference extends org.apache.fop.area.Area
  minor version: 0
  major version: 59
  flags: flags: (0x0021) ACC_PUBLIC, ACC_SUPER
  this_class: org.apache.fop.area.MainReference
  super_class: org.apache.fop.area.Area
{
  private static final long serialVersionUID;
    descriptor: J
    flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL
    ConstantValue: 7635126485620012448

  private org.apache.fop.area.BodyRegion parent;
    descriptor: Lorg/apache/fop/area/BodyRegion;
    flags: (0x0002) ACC_PRIVATE

  private java.util.List<org.apache.fop.area.Span> spanAreas;
    descriptor: Ljava/util/List;
    flags: (0x0002) ACC_PRIVATE
    Signature: Ljava/util/List<Lorg/apache/fop/area/Span;>;

  private boolean isEmpty;
    descriptor: Z
    flags: (0x0002) ACC_PRIVATE

  private org.apache.fop.traits.WritingModeTraitsGetter wmtg;
    descriptor: Lorg/apache/fop/traits/WritingModeTraitsGetter;
    flags: (0x0002) ACC_PRIVATE

  public void <init>(org.apache.fop.area.BodyRegion);
    descriptor: (Lorg/apache/fop/area/BodyRegion;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=2, args_size=2
        start local 0 // org.apache.fop.area.MainReference this
        start local 1 // org.apache.fop.area.BodyRegion parent
         0: .line 47
            aload 0 /* this */
            invokespecial org.apache.fop.area.Area.<init>:()V
         1: .line 38
            aload 0 /* this */
            new java.util.ArrayList
            dup
            invokespecial java.util.ArrayList.<init>:()V
            putfield org.apache.fop.area.MainReference.spanAreas:Ljava/util/List;
         2: .line 39
            aload 0 /* this */
            iconst_1
            putfield org.apache.fop.area.MainReference.isEmpty:Z
         3: .line 48
            aload 0 /* this */
            aload 1 /* parent */
            putfield org.apache.fop.area.MainReference.parent:Lorg/apache/fop/area/BodyRegion;
         4: .line 49
            aload 0 /* this */
            getstatic org.apache.fop.area.Trait.IS_REFERENCE_AREA:Ljava/lang/Integer;
            getstatic java.lang.Boolean.TRUE:Ljava/lang/Boolean;
            invokevirtual org.apache.fop.area.MainReference.addTrait:(Ljava/lang/Integer;Ljava/lang/Object;)V
         5: .line 50
            return
        end local 1 // org.apache.fop.area.BodyRegion parent
        end local 0 // org.apache.fop.area.MainReference this
      LocalVariableTable:
        Start  End  Slot    Name  Signature
            0    6     0    this  Lorg/apache/fop/area/MainReference;
            0    6     1  parent  Lorg/apache/fop/area/BodyRegion;
    MethodParameters:
        Name  Flags
      parent  

  public org.apache.fop.area.Span createSpan(boolean);
    descriptor: (Z)Lorg/apache/fop/area/Span;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=5, locals=3, args_size=2
        start local 0 // org.apache.fop.area.MainReference this
        start local 1 // boolean spanAll
         0: .line 59
            aload 0 /* this */
            getfield org.apache.fop.area.MainReference.spanAreas:Ljava/util/List;
            invokeinterface java.util.List.size:()I
            ifle 2
            aload 0 /* this */
            invokevirtual org.apache.fop.area.MainReference.getCurrentSpan:()Lorg/apache/fop/area/Span;
            invokevirtual org.apache.fop.area.Span.isEmpty:()Z
            ifeq 2
         1: .line 61
            aload 0 /* this */
            getfield org.apache.fop.area.MainReference.spanAreas:Ljava/util/List;
            aload 0 /* this */
            getfield org.apache.fop.area.MainReference.spanAreas:Ljava/util/List;
            invokeinterface java.util.List.size:()I
            iconst_1
            isub
            invokeinterface java.util.List.remove:(I)Ljava/lang/Object;
            pop
         2: .line 63
      StackMap locals:
      StackMap stack:
            new org.apache.fop.area.Span
            dup
            iload 1 /* spanAll */
            ifeq 3
            iconst_1
            goto 4
      StackMap locals: org.apache.fop.area.MainReference int
      StackMap stack: new 2 new 2
         3: aload 0 /* this */
            invokevirtual org.apache.fop.area.MainReference.getColumnCount:()I
         4: .line 64
      StackMap locals: org.apache.fop.area.MainReference int
      StackMap stack: new 2 new 2 int
            aload 0 /* this */
            invokevirtual org.apache.fop.area.MainReference.getColumnGap:()I
            aload 0 /* this */
            getfield org.apache.fop.area.MainReference.parent:Lorg/apache/fop/area/BodyRegion;
            invokevirtual org.apache.fop.area.BodyRegion.getContentIPD:()I
         5: .line 63
            invokespecial org.apache.fop.area.Span.<init>:(III)V
            astore 2 /* newSpan */
        start local 2 // org.apache.fop.area.Span newSpan
         6: .line 65
            aload 0 /* this */
            getfield org.apache.fop.area.MainReference.spanAreas:Ljava/util/List;
            aload 2 /* newSpan */
            invokeinterface java.util.List.add:(Ljava/lang/Object;)Z
            pop
         7: .line 66
            aload 0 /* this */
            getfield org.apache.fop.area.MainReference.wmtg:Lorg/apache/fop/traits/WritingModeTraitsGetter;
            ifnull 9
         8: .line 67
            aload 2 /* newSpan */
            aload 0 /* this */
            getfield org.apache.fop.area.MainReference.wmtg:Lorg/apache/fop/traits/WritingModeTraitsGetter;
            invokevirtual org.apache.fop.area.Span.setWritingModeTraits:(Lorg/apache/fop/traits/WritingModeTraitsGetter;)V
         9: .line 69
      StackMap locals: org.apache.fop.area.Span
      StackMap stack:
            aload 0 /* this */
            invokevirtual org.apache.fop.area.MainReference.getCurrentSpan:()Lorg/apache/fop/area/Span;
            areturn
        end local 2 // org.apache.fop.area.Span newSpan
        end local 1 // boolean spanAll
        end local 0 // org.apache.fop.area.MainReference this
      LocalVariableTable:
        Start  End  Slot     Name  Signature
            0   10     0     this  Lorg/apache/fop/area/MainReference;
            0   10     1  spanAll  Z
            6   10     2  newSpan  Lorg/apache/fop/area/Span;
    MethodParameters:
         Name  Flags
      spanAll  

  public java.util.List<org.apache.fop.area.Span> getSpans();
    descriptor: ()Ljava/util/List;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.apache.fop.area.MainReference this
         0: .line 78
            aload 0 /* this */
            getfield org.apache.fop.area.MainReference.spanAreas:Ljava/util/List;
            areturn
        end local 0 // org.apache.fop.area.MainReference this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/apache/fop/area/MainReference;
    Signature: ()Ljava/util/List<Lorg/apache/fop/area/Span;>;

  public void setSpans(java.util.List<org.apache.fop.area.Span>);
    descriptor: (Ljava/util/List;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=4, locals=2, args_size=2
        start local 0 // org.apache.fop.area.MainReference this
        start local 1 // java.util.List spans
         0: .line 89
            aload 0 /* this */
            new java.util.ArrayList
            dup
            aload 1 /* spans */
            invokespecial java.util.ArrayList.<init>:(Ljava/util/Collection;)V
            putfield org.apache.fop.area.MainReference.spanAreas:Ljava/util/List;
         1: .line 90
            return
        end local 1 // java.util.List spans
        end local 0 // org.apache.fop.area.MainReference this
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0    2     0   this  Lorg/apache/fop/area/MainReference;
            0    2     1  spans  Ljava/util/List<Lorg/apache/fop/area/Span;>;
    Signature: (Ljava/util/List<Lorg/apache/fop/area/Span;>;)V
    MethodParameters:
       Name  Flags
      spans  

  public org.apache.fop.area.Span getCurrentSpan();
    descriptor: ()Lorg/apache/fop/area/Span;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=1, args_size=1
        start local 0 // org.apache.fop.area.MainReference this
         0: .line 97
            aload 0 /* this */
            getfield org.apache.fop.area.MainReference.spanAreas:Ljava/util/List;
            aload 0 /* this */
            getfield org.apache.fop.area.MainReference.spanAreas:Ljava/util/List;
            invokeinterface java.util.List.size:()I
            iconst_1
            isub
            invokeinterface java.util.List.get:(I)Ljava/lang/Object;
            checkcast org.apache.fop.area.Span
            areturn
        end local 0 // org.apache.fop.area.MainReference this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/apache/fop/area/MainReference;

  public boolean isEmpty();
    descriptor: ()Z
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=3, args_size=1
        start local 0 // org.apache.fop.area.MainReference this
         0: .line 107
            aload 0 /* this */
            getfield org.apache.fop.area.MainReference.isEmpty:Z
            ifeq 7
            aload 0 /* this */
            getfield org.apache.fop.area.MainReference.spanAreas:Ljava/util/List;
            ifnull 7
         1: .line 108
            aload 0 /* this */
            getfield org.apache.fop.area.MainReference.spanAreas:Ljava/util/List;
            invokeinterface java.util.List.iterator:()Ljava/util/Iterator;
            astore 2
            goto 6
      StackMap locals: org.apache.fop.area.MainReference top java.util.Iterator
      StackMap stack:
         2: aload 2
            invokeinterface java.util.Iterator.next:()Ljava/lang/Object;
            checkcast org.apache.fop.area.Span
            astore 1 /* spanArea */
        start local 1 // org.apache.fop.area.Span spanArea
         3: .line 109
            aload 1 /* spanArea */
            invokevirtual org.apache.fop.area.Span.isEmpty:()Z
            ifne 6
         4: .line 110
            aload 0 /* this */
            iconst_0
            putfield org.apache.fop.area.MainReference.isEmpty:Z
         5: .line 111
            goto 7
        end local 1 // org.apache.fop.area.Span spanArea
         6: .line 108
      StackMap locals:
      StackMap stack:
            aload 2
            invokeinterface java.util.Iterator.hasNext:()Z
            ifne 2
         7: .line 115
      StackMap locals: org.apache.fop.area.MainReference
      StackMap stack:
            aload 0 /* this */
            getfield org.apache.fop.area.MainReference.isEmpty:Z
            ireturn
        end local 0 // org.apache.fop.area.MainReference this
      LocalVariableTable:
        Start  End  Slot      Name  Signature
            0    8     0      this  Lorg/apache/fop/area/MainReference;
            3    6     1  spanArea  Lorg/apache/fop/area/Span;

  public int getColumnCount();
    descriptor: ()I
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.apache.fop.area.MainReference this
         0: .line 120
            aload 0 /* this */
            getfield org.apache.fop.area.MainReference.parent:Lorg/apache/fop/area/BodyRegion;
            invokevirtual org.apache.fop.area.BodyRegion.getColumnCount:()I
            ireturn
        end local 0 // org.apache.fop.area.MainReference this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/apache/fop/area/MainReference;

  public int getColumnGap();
    descriptor: ()I
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.apache.fop.area.MainReference this
         0: .line 125
            aload 0 /* this */
            getfield org.apache.fop.area.MainReference.parent:Lorg/apache/fop/area/BodyRegion;
            invokevirtual org.apache.fop.area.BodyRegion.getColumnGap:()I
            ireturn
        end local 0 // org.apache.fop.area.MainReference this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/apache/fop/area/MainReference;

  public void setWritingModeTraits(org.apache.fop.traits.WritingModeTraitsGetter);
    descriptor: (Lorg/apache/fop/traits/WritingModeTraitsGetter;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=4, args_size=2
        start local 0 // org.apache.fop.area.MainReference this
        start local 1 // org.apache.fop.traits.WritingModeTraitsGetter wmtg
         0: .line 134
            aload 0 /* this */
            aload 1 /* wmtg */
            putfield org.apache.fop.area.MainReference.wmtg:Lorg/apache/fop/traits/WritingModeTraitsGetter;
         1: .line 135
            aload 0 /* this */
            invokevirtual org.apache.fop.area.MainReference.getSpans:()Ljava/util/List;
            invokeinterface java.util.List.iterator:()Ljava/util/Iterator;
            astore 3
            goto 4
      StackMap locals: org.apache.fop.area.MainReference org.apache.fop.traits.WritingModeTraitsGetter top java.util.Iterator
      StackMap stack:
         2: aload 3
            invokeinterface java.util.Iterator.next:()Ljava/lang/Object;
            checkcast org.apache.fop.area.Span
            astore 2 /* s */
        start local 2 // org.apache.fop.area.Span s
         3: .line 136
            aload 2 /* s */
            aload 1 /* wmtg */
            invokevirtual org.apache.fop.area.Span.setWritingModeTraits:(Lorg/apache/fop/traits/WritingModeTraitsGetter;)V
        end local 2 // org.apache.fop.area.Span s
         4: .line 135
      StackMap locals:
      StackMap stack:
            aload 3
            invokeinterface java.util.Iterator.hasNext:()Z
            ifne 2
         5: .line 138
            return
        end local 1 // org.apache.fop.traits.WritingModeTraitsGetter wmtg
        end local 0 // org.apache.fop.area.MainReference this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    6     0  this  Lorg/apache/fop/area/MainReference;
            0    6     1  wmtg  Lorg/apache/fop/traits/WritingModeTraitsGetter;
            3    4     2     s  Lorg/apache/fop/area/Span;
    MethodParameters:
      Name  Flags
      wmtg  
}
SourceFile: "MainReference.java"