Package serp.bytecode

Class LineNumber

java.lang.Object
serp.bytecode.LineNumber
All Implemented Interfaces:
Comparable, BCEntity, InstructionPtr, VisitAcceptor
public class LineNumber extends Object implements Comparable, InstructionPtr, BCEntity, VisitAcceptor
A line number corresponds to a sequence of opcodes that map logically to a line of source code.
Author:
Abe White

  • Method Details

    • getTable

      public LineNumberTable getTable()
      Line numbers are stored in a LineNumberTable.

    • getLine

      public int getLine()
      Return source line number.

    • setLine

      public void setLine(int lineNumber)
      Set the source line number.

    • getStart

      public Instruction getStart()
      Return the instruction marking the beginning of this line.

    • getStartPc

      public int getStartPc()
      Return the index into the code byte array at which this line starts.

    • setStartPc

      public void setStartPc(int startPc)
      Set the index into the code byte array at which this line starts.

    • setStart

      public void setStart(Instruction instruction)
      Set the Instruction marking the beginning this line. The instruction must already be a part of the method.

    • updateTargets

      public void updateTargets()
      Description copied from interface: InstructionPtr
      Use the byte indexes read from the class file to calculate and set references to the target instruction(s) for this ptr. This method will be called after the byte code has been read in for the first time and before it is written after modification.
      Specified by:
      updateTargets in interface InstructionPtr

    • replaceTarget

      public void replaceTarget(Instruction oldTarget, Instruction newTarget)
      Description copied from interface: InstructionPtr
      Replace the given old, likely invalid, target with a new target. The new target Instruction is guaranteed to be in the same code block as this InstructionPtr.
      Specified by:
      replaceTarget in interface InstructionPtr

    • getProject

      public Project getProject()
      Description copied from interface: BCEntity
      Return the project of the current class.
      Specified by:
      getProject in interface BCEntity

    • getPool

      public ConstantPool getPool()
      Description copied from interface: BCEntity
      Return the constant pool of the current class.
      Specified by:
      getPool in interface BCEntity

    • getClassLoader

      public ClassLoader getClassLoader()
      Description copied from interface: BCEntity
      Return the class loader to use when loading related classes.
      Specified by:
      getClassLoader in interface BCEntity

    • isValid

      public boolean isValid()
      Description copied from interface: BCEntity
      Return false if this entity has been removed from its parent; in this case the results of any operations on the entity are undefined.
      Specified by:
      isValid in interface BCEntity

    • acceptVisit

      public void acceptVisit(BCVisitor visit)
      Description copied from interface: VisitAcceptor
      Accept a visit from a BCVisitor, calling the appropriate methods to notify the visitor that it has entered this entity, and to provide it with the proper callbacks for each sub-entity owned by this one.
      Specified by:
      acceptVisit in interface VisitAcceptor

    • compareTo

      public int compareTo(Object other)
      Specified by:
      compareTo in interface Comparable

    • getCode

      public Code getCode()
      Description copied from interface: InstructionPtr
      Returns the Code block that owns the Instruction(s) this InstructionPtr points to.
      Specified by:
      getCode in interface InstructionPtr