Invercargill/src/lib/Interfaces/ReadOnlyAddressableBytes.vala

namespace Invercargill {

    public enum Endianness {
        Native,
        BigEndian,
        LittleEndian,
    }


    [GenericAccessors]
    public interface ReadOnlyAddressableBytes : ReadOnlyAddressable<uint8>, Equatable<Enumerable<uint8>>, BinaryData, Hashable  {

        public virtual int64? get_int64(int index, Endianness endianness = Endianness.Native) throws IndexError {
            var data = get_slice(index, sizeof(int64));
            int64 value = 0;
            int64 val = 0;
            Memory.copy(&value, data, sizeof(int64));
            switch (endianness) {
                case Endianness.Native:
                    val = value;
                    break;
                case Endianness.BigEndian:
                    val = value.to_big_endian();
                    break;
                case Endianness.LittleEndian:
                    val = value.to_little_endian();
                    break;
            } 
            return val;           
        }

        public virtual uint64? get_uint64(int index, Endianness endianness = Endianness.Native) throws IndexError {
            var data = get_slice(index, sizeof(uint64));
            uint64 value = 0;
            uint64 val = 0;
            Memory.copy(&value, data, sizeof(uint64));
            switch (endianness) {
                case Endianness.Native:
                    val = value;
                    break;
                case Endianness.BigEndian:
                    val = value.to_big_endian();
                    break;
                case Endianness.LittleEndian:
                    val = value.to_little_endian();
                    break;
            } 
            return val;
        }


        public virtual int32? get_int32(int index, Endianness endianness = Endianness.Native) throws IndexError {
            var data = get_slice(index, sizeof(int32));
            int32 value = 0;
            int32 val = 0;
            Memory.copy(&value, data, sizeof(int32));
            switch (endianness) {
                case Endianness.Native:
                    val = value;
                    break;
                case Endianness.BigEndian:
                    val = value.to_big_endian();
                    break;
                case Endianness.LittleEndian:
                    val = value.to_little_endian();
                    break;
            } 
            return val;           
        }

        public virtual uint32? get_uint32(int index, Endianness endianness = Endianness.Native) throws IndexError {
            var data = get_slice(index, sizeof(uint32));
            uint32 value = 0;
            uint32 val = 0;
            Memory.copy(&value, data, sizeof(uint32));
            switch (endianness) {
                case Endianness.Native:
                    val = value;
                    break;
                case Endianness.BigEndian:
                    val = value.to_big_endian();
                    break;
                case Endianness.LittleEndian:
                    val = value.to_little_endian();
                    break;
            } 
            return val;           
        }

        public virtual int16? get_int16(int index, Endianness endianness = Endianness.Native) throws IndexError {
            var data = get_slice(index, sizeof(int16));
            int16 value = 0;
            int16 val = 0;
            Memory.copy(&value, data, sizeof(int16));
            switch (endianness) {
                case Endianness.Native:
                    val = value;
                    break;
                case Endianness.BigEndian:
                    val = value.to_big_endian();
                    break;
                case Endianness.LittleEndian:
                    val = value.to_little_endian();
                    break;
            } 
            return val;           
        }

        public virtual uint16? get_uint16(int index, Endianness endianness = Endianness.Native) throws IndexError {
            var data = get_slice(index, sizeof(uint16));
            uint16 value = 0;
            uint16 val = 0;
            Memory.copy(&value, data, sizeof(uint16));
            switch (endianness) {
                case Endianness.Native:
                    val = value;
                    break;
                case Endianness.BigEndian:
                    val = value.to_big_endian();
                    break;
                case Endianness.LittleEndian:
                    val = value.to_little_endian();
                    break;
            } 
            return val;           
        }

        public virtual int8? get_int8(int index) throws IndexError {
            var data = get_slice(index, sizeof(int8));
            int8 value = 0;
            Memory.copy(&value, data, sizeof(int8));
            return value;           
        }

        public virtual uint8? get_uint8(int index) throws IndexError {
            var data = get_slice(index, sizeof(uint8));
            uint8 value = 0;
            Memory.copy(&value, data, sizeof(uint8));
            return value;           
        }

        private uint8[] get_slice(uint index, ulong size) throws IndexError {
            var slice = new uint8[size];
            for(int i = 0; i < size; i++) {
                slice[i] = this[i + index];
            }
            return slice;
        }
    }

}