Enum Removal

    • Enum Constant Summary

      Enum Constants 
      Enum Constant Description
      DOUBLE
      A removal of a double-sized value.
      SINGLE
      A removal of a single-sized value.
      ZERO
      A removal of no value.
    • Field Summary

      Fields 
      Modifier and Type Field Description
      private int opcode
      The opcode to execute for the removal.
      private StackManipulation.Size size
      The size impact of the removal onto the operand stack.
    • Constructor Summary

      Constructors 
      Modifier Constructor Description
      private Removal​(StackSize stackSize, int opcode)
      Creates a new removal stack manipulation.
    • Method Summary

      All Methods Static Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      StackManipulation.Size apply​(org.objectweb.asm.MethodVisitor methodVisitor, Implementation.Context implementationContext)
      Applies the stack manipulation that is described by this instance.
      boolean isValid()
      Determines if this stack manipulation is valid.
      static StackManipulation of​(TypeDefinition typeDefinition)
      Removes a value from the operand stack dependant of its size.
      static Removal valueOf​(java.lang.String name)
      Returns the enum constant of this type with the specified name.
      static Removal[] values()
      Returns an array containing the constants of this enum type, in the order they are declared.
      • Methods inherited from class java.lang.Enum

        clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf
      • Methods inherited from class java.lang.Object

        getClass, notify, notifyAll, wait, wait, wait
    • Enum Constant Detail

      • ZERO

        public static final Removal ZERO
        A removal of no value. This corresponds a no-op instruction.
      • SINGLE

        public static final Removal SINGLE
        A removal of a single-sized value.
      • DOUBLE

        public static final Removal DOUBLE
        A removal of a double-sized value.
    • Field Detail

      • opcode

        private final int opcode
        The opcode to execute for the removal.
    • Constructor Detail

      • Removal

        private Removal​(StackSize stackSize,
                        int opcode)
        Creates a new removal stack manipulation.
        Parameters:
        stackSize - The size impact of the removal onto the operand stack.
        opcode - The opcode to execute for the removal.
    • Method Detail

      • values

        public static Removal[] values()
        Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:
        for (Removal c : Removal.values())
            System.out.println(c);
        
        Returns:
        an array containing the constants of this enum type, in the order they are declared
      • valueOf

        public static Removal valueOf​(java.lang.String name)
        Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)
        Parameters:
        name - the name of the enum constant to be returned.
        Returns:
        the enum constant with the specified name
        Throws:
        java.lang.IllegalArgumentException - if this enum type has no constant with the specified name
        java.lang.NullPointerException - if the argument is null
      • of

        public static StackManipulation of​(TypeDefinition typeDefinition)
        Removes a value from the operand stack dependant of its size.
        Parameters:
        typeDefinition - The type to remove from the stack.
        Returns:
        A stack manipulation that represents the removal.
      • isValid

        public boolean isValid()
        Determines if this stack manipulation is valid.
        Specified by:
        isValid in interface StackManipulation
        Returns:
        If false, this manipulation cannot be applied and should throw an exception.
      • apply

        public StackManipulation.Size apply​(org.objectweb.asm.MethodVisitor methodVisitor,
                                            Implementation.Context implementationContext)
        Applies the stack manipulation that is described by this instance.
        Specified by:
        apply in interface StackManipulation
        Parameters:
        methodVisitor - The method visitor used to write the method implementation to.
        implementationContext - The context of the current implementation.
        Returns:
        The changes to the size of the operand stack that are implied by this stack manipulation.