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.fo.expr.ProportionalColumnWidthFunction extends org.apache.fop.fo.expr.FunctionBase
  minor version: 0
  major version: 59
  flags: flags: (0x0021) ACC_PUBLIC, ACC_SUPER
  this_class: org.apache.fop.fo.expr.ProportionalColumnWidthFunction
  super_class: org.apache.fop.fo.expr.FunctionBase
{
  public void <init>();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.apache.fop.fo.expr.ProportionalColumnWidthFunction this
         0: .line 33
            aload 0 /* this */
            invokespecial org.apache.fop.fo.expr.FunctionBase.<init>:()V
            return
        end local 0 // org.apache.fop.fo.expr.ProportionalColumnWidthFunction this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/apache/fop/fo/expr/ProportionalColumnWidthFunction;

  public int getRequiredArgsCount();
    descriptor: ()I
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.apache.fop.fo.expr.ProportionalColumnWidthFunction this
         0: .line 37
            iconst_1
            ireturn
        end local 0 // org.apache.fop.fo.expr.ProportionalColumnWidthFunction this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/apache/fop/fo/expr/ProportionalColumnWidthFunction;

  public org.apache.fop.datatypes.PercentBase getPercentBase();
    descriptor: ()Lorg/apache/fop/datatypes/PercentBase;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // org.apache.fop.fo.expr.ProportionalColumnWidthFunction this
         0: .line 43
            new org.apache.fop.fo.expr.ProportionalColumnWidthFunction$ProportionalColumnWidthPercentBase
            dup
            invokespecial org.apache.fop.fo.expr.ProportionalColumnWidthFunction$ProportionalColumnWidthPercentBase.<init>:()V
            areturn
        end local 0 // org.apache.fop.fo.expr.ProportionalColumnWidthFunction this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/apache/fop/fo/expr/ProportionalColumnWidthFunction;

  public org.apache.fop.fo.properties.Property eval(org.apache.fop.fo.properties.Property[], org.apache.fop.fo.expr.PropertyInfo);
    descriptor: ([Lorg/apache/fop/fo/properties/Property;Lorg/apache/fop/fo/expr/PropertyInfo;)Lorg/apache/fop/fo/properties/Property;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=5, locals=6, args_size=3
        start local 0 // org.apache.fop.fo.expr.ProportionalColumnWidthFunction this
        start local 1 // org.apache.fop.fo.properties.Property[] args
        start local 2 // org.apache.fop.fo.expr.PropertyInfo pInfo
         0: .line 48
            aload 1 /* args */
            iconst_0
            aaload
            invokevirtual org.apache.fop.fo.properties.Property.getNumber:()Ljava/lang/Number;
            astore 3 /* d */
        start local 3 // java.lang.Number d
         1: .line 49
            aload 3 /* d */
            ifnonnull 3
         2: .line 50
            new org.apache.fop.fo.expr.PropertyException
            dup
            ldc "Non numeric operand to proportional-column-width() function."
            invokespecial org.apache.fop.fo.expr.PropertyException.<init>:(Ljava/lang/String;)V
            athrow
         3: .line 53
      StackMap locals: java.lang.Number
      StackMap stack:
            aload 2 /* pInfo */
            invokevirtual org.apache.fop.fo.expr.PropertyInfo.getPropertyList:()Lorg/apache/fop/fo/PropertyList;
            astore 4 /* pList */
        start local 4 // org.apache.fop.fo.PropertyList pList
         4: .line 54
            ldc "fo:table-column"
            aload 4 /* pList */
            invokevirtual org.apache.fop.fo.PropertyList.getFObj:()Lorg/apache/fop/fo/FObj;
            invokevirtual org.apache.fop.fo.FObj.getName:()Ljava/lang/String;
            invokevirtual java.lang.String.equals:(Ljava/lang/Object;)Z
            ifne 6
         5: .line 55
            new org.apache.fop.fo.expr.PropertyException
            dup
            ldc "proportional-column-width() function may only be used on fo:table-column."
            invokespecial org.apache.fop.fo.expr.PropertyException.<init>:(Ljava/lang/String;)V
            athrow
         6: .line 59
      StackMap locals: org.apache.fop.fo.PropertyList
      StackMap stack:
            aload 4 /* pList */
            invokevirtual org.apache.fop.fo.PropertyList.getParentFObj:()Lorg/apache/fop/fo/FObj;
            checkcast org.apache.fop.fo.flow.table.Table
            astore 5 /* t */
        start local 5 // org.apache.fop.fo.flow.table.Table t
         7: .line 60
            aload 5 /* t */
            invokevirtual org.apache.fop.fo.flow.table.Table.isAutoLayout:()Z
            ifeq 9
         8: .line 61
            new org.apache.fop.fo.expr.PropertyException
            dup
            ldc "proportional-column-width() function may only be used when fo:table has table-layout=\"fixed\"."
            invokespecial org.apache.fop.fo.expr.PropertyException.<init>:(Ljava/lang/String;)V
            athrow
         9: .line 65
      StackMap locals: org.apache.fop.fo.flow.table.Table
      StackMap stack:
            new org.apache.fop.fo.properties.TableColLength
            dup
            aload 3 /* d */
            invokevirtual java.lang.Number.doubleValue:()D
            aload 2 /* pInfo */
            invokevirtual org.apache.fop.fo.expr.PropertyInfo.getFO:()Lorg/apache/fop/fo/FObj;
            invokespecial org.apache.fop.fo.properties.TableColLength.<init>:(DLorg/apache/fop/fo/FObj;)V
            areturn
        end local 5 // org.apache.fop.fo.flow.table.Table t
        end local 4 // org.apache.fop.fo.PropertyList pList
        end local 3 // java.lang.Number d
        end local 2 // org.apache.fop.fo.expr.PropertyInfo pInfo
        end local 1 // org.apache.fop.fo.properties.Property[] args
        end local 0 // org.apache.fop.fo.expr.ProportionalColumnWidthFunction this
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0   10     0   this  Lorg/apache/fop/fo/expr/ProportionalColumnWidthFunction;
            0   10     1   args  [Lorg/apache/fop/fo/properties/Property;
            0   10     2  pInfo  Lorg/apache/fop/fo/expr/PropertyInfo;
            1   10     3      d  Ljava/lang/Number;
            4   10     4  pList  Lorg/apache/fop/fo/PropertyList;
            7   10     5      t  Lorg/apache/fop/fo/flow/table/Table;
    Exceptions:
      throws org.apache.fop.fo.expr.PropertyException
    MethodParameters:
       Name  Flags
      args   
      pInfo  
}
SourceFile: "ProportionalColumnWidthFunction.java"
NestMembers:
  org.apache.fop.fo.expr.ProportionalColumnWidthFunction$ProportionalColumnWidthPercentBase
InnerClasses:
  private ProportionalColumnWidthPercentBase = org.apache.fop.fo.expr.ProportionalColumnWidthFunction$ProportionalColumnWidthPercentBase of org.apache.fop.fo.expr.ProportionalColumnWidthFunction