Class LineNumberTable

  • All Implemented Interfaces:
    Cloneable, Node

    public final class LineNumberTable
    extends Attribute
    This class represents a table of line numbers for debugging purposes. This attribute is used by the Code attribute. It contains pairs of PCs and line numbers.
    See Also:
    Code, LineNumber
    • Constructor Detail

      • LineNumberTable

        public LineNumberTable​(int name_index,
                               int length,
                               LineNumber[] line_number_table,
                               ConstantPool constant_pool)
    • Method Detail

      • accept

        public void accept​(Visitor v)
        Called by objects that are traversing the nodes of the tree implicitely 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
      • dump

        public void dump​(DataOutputStream file)
                  throws IOException
        Dump line number table attribute to file stream in binary format.
        Overrides:
        dump in class Attribute
        Parameters:
        file - Output file stream
        Throws:
        IOException - if an I/O Exception occurs in writeShort
      • getLineNumberTable

        public LineNumber[] getLineNumberTable()
        Returns:
        Array of (pc offset, line number) pairs.
      • setLineNumberTable

        public void setLineNumberTable​(LineNumber[] lineNumberTable)
        Parameters:
        lineNumberTable - the line number entries for this table
      • getSourceLine

        public int getSourceLine​(int pos)
        Map byte code positions to source code lines.
        Parameters:
        pos - byte code offset
        Returns:
        corresponding line in source code
      • getTableLength

        public int getTableLength()