Package com.android.dx.rop.cst

Class CstKnownNull

java.lang.Object
com.android.dx.rop.cst.Constant
com.android.dx.rop.cst.TypedConstant
com.android.dx.rop.cst.CstLiteralBits
com.android.dx.rop.cst.CstKnownNull
All Implemented Interfaces:
TypeBearer, ToHuman, Comparable<Constant>
public final class CstKnownNull extends CstLiteralBits
Constant type to represent a known-null value.

  • Field Details

    • THE_ONE

      public static final CstKnownNull THE_ONE
      non-null; unique instance of this class

  • Method Details

    • equals

      public boolean equals(Object other)
      Overrides:
      equals in class Object

    • hashCode

      public int hashCode()
      Overrides:
      hashCode in class Object

    • compareTo0

      protected int compareTo0(Constant other)
      Compare the values of this and another instance, which are guaranteed to be of the same class. Subclasses must implement this.
      Specified by:
      compareTo0 in class Constant
      Parameters:
      other - non-null; the instance to compare to
      Returns:
      -1, 0, or 1, as usual for a comparison

    • toString

      public String toString()
      Overrides:
      toString in class Object

    • getType

      public Type getType()
      Gets the type associated with this instance.
      Returns:
      non-null; the type

    • typeName

      public String typeName()
      Returns the human name for the particular type of constant this instance is.
      Specified by:
      typeName in class Constant
      Returns:
      non-null; the name

    • isCategory2

      public boolean isCategory2()
      Returns true if this instance is a category-2 constant, meaning it takes up two slots in the constant pool, or false if this instance is category-1.
      Specified by:
      isCategory2 in class Constant
      Returns:
      true iff this instance is category-2

    • toHuman

      public String toHuman()
      Return the "human" string form of this instance. This is generally less "debuggy" than toString().
      Returns:
      non-null; the human string form

    • fitsInInt

      public boolean fitsInInt()
      Returns whether or not this instance's value may be accurately represented as an int. The rule is that if there is an int which may be sign-extended to yield this instance's value, then this method returns true. Otherwise, it returns false.
      Specified by:
      fitsInInt in class CstLiteralBits
      Returns:
      true iff this instance fits in an int

    • getIntBits

      public int getIntBits()
      Gets the value as int bits. If this instance contains more bits than fit in an int, then this returns only the low-order bits. As "literal bits," a known-null is always represented as the number zero.
      Specified by:
      getIntBits in class CstLiteralBits
      Returns:
      the bits

    • getLongBits

      public long getLongBits()
      Gets the value as long bits. If this instance contains fewer bits than fit in a long, then the result of this method is the sign extension of the value. As "literal bits," a known-null is always represented as the number zero.
      Specified by:
      getLongBits in class CstLiteralBits
      Returns:
      the bits