Package org.apache.bcel.verifier.structurals

Class LocalVariables

  • All Implemented Interfaces:
    java.lang.Cloneable
    public class LocalVariables
extends java.lang.Object
implements java.lang.Cloneable
    This class implements an array of local variables used for symbolic JVM simulation.

    • Constructor Summary

      Constructors 
      Constructor Description
      LocalVariables​(int localVariableCount)
      Creates a new LocalVariables object.

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      java.lang.Object clone()
      Returns a deep copy of this object; i.e.
      boolean equals​(java.lang.Object o)  
      Type get​(int slotIndex)
      Returns the type of the local variable slot index.
      LocalVariables getClone()
      Returns a (correctly typed) clone of this object.
      int hashCode()  
      void initializeObject​(UninitializedObjectType uninitializedObjectType)
      Replaces all occurrences of uninitializedObjectType in this local variables set with an "initialized" ObjectType.
      int maxLocals()
      Returns the number of local variable slots.
      void merge​(LocalVariables localVariable)
      Merges two local variables sets as described in the Java Virtual Machine Specification, Second Edition, section 4.9.2, page 146.
      void set​(int slotIndex, Type type)
      Sets a new Type for the given local variable slot.
      java.lang.String toString()
      Returns a String representation of this object.

      • Methods inherited from class java.lang.Object

        finalize, getClass, notify, notifyAll, wait, wait, wait

    • Constructor Detail

      • LocalVariables

        public LocalVariables​(int localVariableCount)
        Creates a new LocalVariables object.
        Parameters:
        localVariableCount - local variable count.

    • Method Detail

      • clone

        public java.lang.Object clone()
        Returns a deep copy of this object; i.e. the clone operates on a new local variable array. However, the Type objects in the array are shared.
        Overrides:
        clone in class java.lang.Object

      • equals

        public boolean equals​(java.lang.Object o)
        Overrides:
        equals in class java.lang.Object

      • get

        public Type get​(int slotIndex)
        Returns the type of the local variable slot index.
        Parameters:
        slotIndex - Slot to look up.
        Returns:
        the type of the local variable slot index.

      • getClone

        public LocalVariables getClone()
        Returns a (correctly typed) clone of this object. This is equivalent to ((LocalVariables) this.clone()).
        Returns:
        a (correctly typed) clone of this object.

      • hashCode

        public int hashCode()
        Overrides:
        hashCode in class java.lang.Object
        Returns:
        a hash code value for the object.

      • initializeObject

        public void initializeObject​(UninitializedObjectType uninitializedObjectType)
        Replaces all occurrences of uninitializedObjectType in this local variables set with an "initialized" ObjectType.
        Parameters:
        uninitializedObjectType - the object to match.

      • maxLocals

        public int maxLocals()
        Returns the number of local variable slots.
        Returns:
        the number of local variable slots.

      • merge

        public void merge​(LocalVariables localVariable)
        Merges two local variables sets as described in the Java Virtual Machine Specification, Second Edition, section 4.9.2, page 146.
        Parameters:
        localVariable - other local variable.

      • set

        public void set​(int slotIndex,
                Type type)
        Sets a new Type for the given local variable slot.
        Parameters:
        slotIndex - Target slot index.
        type - Type to save at the given slot index.

      • toString

        public java.lang.String toString()
        Returns a String representation of this object.
        Overrides:
        toString in class java.lang.Object