Package serp.bytecode

Class WideInstruction

  • All Implemented Interfaces:
    BCEntity, VisitAcceptor

    public class WideInstruction
    extends LocalVariableInstruction
    The wide instruction, which is used to allow other instructions to index values beyond what they can normally index baed on the length of their arguments.
    Author:
    Abe White
    • Method Detail

      • getStackChange

        public int getStackChange()
        Description copied from class: Instruction
        Return the number of stack positions this instruction pushes or pops during its execution.
        Overrides:
        getStackChange in class Instruction
        Returns:
        0 if the stack is not affected by this instruction, a positive number if it pushes onto the stack, and a negative number if it pops from the stack
      • getLogicalStackChange

        public int getLogicalStackChange()
        Description copied from class: Instruction
        Return the logical number of stack positions changed by this instruction. In other words, ignore weirdness with longs and doubles taking two stack positions.
        Overrides:
        getLogicalStackChange in class Instruction
      • getTypeName

        public java.lang.String getTypeName()
        Description copied from class: TypedInstruction
        Return the type name for this instruction. If the type has not been set, this method will return null.
        Overrides:
        getTypeName in class LocalVariableInstruction
      • setType

        public TypedInstruction setType​(java.lang.String type)
        Description copied from class: TypedInstruction
        Set the type of this instruction. Types that have no direct support will be converted accordingly.
        Overrides:
        setType in class LocalVariableInstruction
        Returns:
        this instruction, for method chaining
      • getInstruction

        public int getInstruction()
        Return the opcode of the instruction to modify; this will return one of the constants defined in Constants.
      • setInstruction

        public WideInstruction setInstruction​(Instruction ins)
        Set the type of instruction this wide instruction modifies.
      • setInstruction

        public WideInstruction setInstruction​(int opcode)
        Set the type of instruction this wide instruction modifies.
      • iinc

        public WideInstruction iinc()
        Set the type of instruction this wide instruction modifies.
        Returns:
        this instruction, for method chaining
      • ret

        public WideInstruction ret()
        Set the type of instruction this wide instruction modifies.
        Returns:
        this instruction, for method chaining
      • iload

        public WideInstruction iload()
        Set the type of instruction this wide instruction modifies.
        Returns:
        this instruction, for method chaining
      • fload

        public WideInstruction fload()
        Set the type of instruction this wide instruction modifies.
        Returns:
        this instruction, for method chaining
      • aload

        public WideInstruction aload()
        Set the type of instruction this wide instruction modifies.
        Returns:
        this instruction, for method chaining
      • lload

        public WideInstruction lload()
        Set the type of instruction this wide instruction modifies.
        Returns:
        this instruction, for method chaining
      • dload

        public WideInstruction dload()
        Set the type of instruction this wide instruction modifies.
        Returns:
        this instruction, for method chaining
      • istore

        public WideInstruction istore()
        Set the type of instruction this wide instruction modifies.
        Returns:
        this instruction, for method chaining
      • fstore

        public WideInstruction fstore()
        Set the type of instruction this wide instruction modifies.
        Returns:
        this instruction, for method chaining
      • astore

        public WideInstruction astore()
        Set the type of instruction this wide instruction modifies.
        Returns:
        this instruction, for method chaining
      • lstore

        public WideInstruction lstore()
        Set the type of instruction this wide instruction modifies.
        Returns:
        this instruction, for method chaining
      • dstore

        public WideInstruction dstore()
        Set the type of instruction this wide instruction modifies.
        Returns:
        this instruction, for method chaining
      • getIncrement

        public int getIncrement()
        Return the increment for this instruction if it augments IINC, or -1 if unset.
      • setIncrement

        public WideInstruction setIncrement​(int val)
        Set the increment on this instruction if it augments IINC.
        Returns:
        this Instruction, for method chaining
      • 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
        Overrides:
        acceptVisit in class Instruction