Package org.apache.bcel.classfile

Class LineNumber

  • All Implemented Interfaces:
    java.lang.Cloneable, Node
    public final class LineNumber
extends java.lang.Object
implements java.lang.Cloneable, Node
    This class represents a (PC offset, line number) pair, that is, a line number in the source that corresponds to a relative address in the byte code. This is used for debugging purposes.
    See Also:
    LineNumberTable

    • Constructor Summary

      Constructors 
      Constructor Description
      LineNumber​(int startPc, int lineNumber)
      Constructs a LineNumber.
      LineNumber​(LineNumber c)
      Initialize from another object.

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      void accept​(Visitor v)
      Called by objects that are traversing the nodes of the tree implicitly defined by the contents of a Java class.
      LineNumber copy()
      Creates a deep copy of this object.
      void dump​(java.io.DataOutputStream file)
      Dumps line number/pc pair to file stream in binary format.
      int getLineNumber()
      Gets the line number.
      int getStartPC()
      Gets the program counter.
      void setLineNumber​(int lineNumber)
      Sets the line number.
      void setStartPC​(int startPc)
      Sets the program counter.
      java.lang.String toString()  

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

    • Constructor Detail

      • LineNumber

        public LineNumber​(int startPc,
                  int lineNumber)
        Constructs a LineNumber.
        Parameters:
        startPc - Program Counter (PC) corresponds to.
        lineNumber - line number in source file.

      • LineNumber

        public LineNumber​(LineNumber c)
        Initialize from another object.
        Parameters:
        c - The object 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
        Parameters:
        v - Visitor object.

      • copy

        public LineNumber copy()
        Creates a deep copy of this object.
        Returns:
        deep copy of this object.

      • dump

        public void dump​(java.io.DataOutputStream file)
          throws java.io.IOException
        Dumps line number/pc pair to file stream in binary format.
        Parameters:
        file - Output file stream.
        Throws:
        java.io.IOException - Thrown if an I/O Exception occurs in writeShort.

      • getLineNumber

        public int getLineNumber()
        Gets the line number.
        Returns:
        Corresponding source line.

      • getStartPC

        public int getStartPC()
        Gets the program counter.
        Returns:
        PC in code.

      • setLineNumber

        public void setLineNumber​(int lineNumber)
        Sets the line number.
        Parameters:
        lineNumber - The source line number.

      • setStartPC

        public void setStartPC​(int startPc)
        Sets the program counter.
        Parameters:
        startPc - The pc for this line number.

      • toString

        public java.lang.String toString()
        Overrides:
        toString in class java.lang.Object
        Returns:
        String representation.