Package org.applecommander.disassembler.api

Class Program

java.lang.Object
org.applecommander.disassembler.api.Program
public class Program extends Object
Program is a state class that tracks where decoding is, what the address is, and provides a few helper methods to assist with various data types. Note that "get" reads from an absolute position (always from 0) while "peek" reads from a relative position (from offset).

  • Constructor Details

    • Program

      public Program(byte[] code, int address)

  • Method Details

    • length

      public int length()
      Length of code.

    • hasMore

      public boolean hasMore()
      Test if there are more bytes to process.

    • peekUnsignedByte

      public int peekUnsignedByte()
      Get an unsigned byte at the current offset. Does not advance the offset value.

    • peekUnsignedByte

      public int peekUnsignedByte(int n)
      Get an unsigned byte at the current offset + n. Does not advance the offset value.

    • peekUnsignedShort

      public int peekUnsignedShort(int n)
      Get an unsigned short (2 bytes, little endian) at the current offset + n. Does not advance the offset value.

    • peekSignedByte

      public int peekSignedByte(int n)
      Get a *signed* byte at the current offset + n. Does not advance the offset value.

    • read

      public byte[] read(int n)
      Read n bytes. Advances offset. Used to read all bytes that are part of an instruction.

    • getUnsignedByte

      public int getUnsignedByte(int n)
      Get an unsigned byte from specified offset. This is not relative like the others.

    • currentOffset

      public int currentOffset()
      Get the current offset.

    • baseAddress

      public int baseAddress()
      Get the base address. This is the initial address passed into the constructor.

    • currentAddress

      public int currentAddress()
      Get the current address. Note that the address is wrapped across the address space. Currently, 64K.