Class ModulePackages

  • All Implemented Interfaces:
    java.lang.Cloneable, Node

    public final class ModulePackages
    extends Attribute
    This class is derived from Attribute and represents the list of packages that are exported or opened by the Module attribute. There may be at most one ModulePackages attribute in a ClassFile structure.
    See Also:
    Attribute
    • Field Detail

      • packageIndexTable

        private int[] packageIndexTable
    • Constructor Detail

      • ModulePackages

        ModulePackages​(int nameIndex,
                       int length,
                       java.io.DataInput input,
                       ConstantPool constantPool)
                throws java.io.IOException
        Constructs object from input stream.
        Parameters:
        nameIndex - Index in constant pool
        length - Content length in bytes
        input - Input stream
        constantPool - Array of constants
        Throws:
        java.io.IOException - if an I/O error occurs.
      • ModulePackages

        public ModulePackages​(int nameIndex,
                              int length,
                              int[] packageIndexTable,
                              ConstantPool constantPool)
        Parameters:
        nameIndex - Index in constant pool
        length - Content length in bytes
        packageIndexTable - Table of indices in constant pool
        constantPool - Array of constants
      • ModulePackages

        public ModulePackages​(ModulePackages c)
        Initialize from another object. Note that both objects use the same references (shallow copy). Use copy() for a physical copy.
        Parameters:
        c - Source to copy.
    • Method Detail

      • accept

        public void accept​(Visitor v)
        Called by objects that are traversing the nodes of the tree implicitly defined by the contents of a Java class. I.e., the hierarchy of methods, fields, attributes, etc. spawns a tree of objects.
        Specified by:
        accept in interface Node
        Specified by:
        accept in class Attribute
        Parameters:
        v - Visitor object
      • copy

        public Attribute copy​(ConstantPool constantPool)
        Specified by:
        copy in class Attribute
        Parameters:
        constantPool - constant pool to save.
        Returns:
        deep copy of this attribute
      • dump

        public void dump​(java.io.DataOutputStream file)
                  throws java.io.IOException
        Dump ModulePackages attribute to file stream in binary format.
        Overrides:
        dump in class Attribute
        Parameters:
        file - Output file stream
        Throws:
        java.io.IOException - if an I/O error occurs.
      • getNumberOfPackages

        public int getNumberOfPackages()
        Returns:
        Length of package table.
      • getPackageIndexTable

        public int[] getPackageIndexTable()
        Returns:
        array of indices into constant pool of package names.
      • getPackageNames

        public java.lang.String[] getPackageNames()
        Returns:
        string array of package names
      • setPackageIndexTable

        public void setPackageIndexTable​(int[] packageIndexTable)
        Parameters:
        packageIndexTable - the list of package indexes Also redefines number_of_packages according to table length.
      • toString

        public java.lang.String toString()
        Overrides:
        toString in class Attribute
        Returns:
        String representation, i.e., a list of packages.