Struct spectrusty_formats::snapshot::Extensions

pub struct Extensions { /* private fields */ }

Implementations

impl Extensions

pub const NONE: Self = _

pub const IF1: Self = _

pub const PLUS_D: Self = _

pub const DISCIPLE: Self = _

pub const SAM_RAM: Self = _

pub const ULA_PLUS: Self = _

pub const TR_DOS: Self = _

pub const RESERVED: Self = _

pub const fn empty() -> Self

Returns an empty set of flags.

Examples found in repository

src/z80/loader.rs (line 28)

fn select_hw_model(version: Z80Version, head_ex: &HeaderEx) -> Option<(ComputerModel, Extensions)> {
    let hw_mode = head_ex.hw_mode;
    let flags3 = Flags3::from(head_ex.flags3);
    let mgt_type = head_ex.mgt_type;
    use ComputerModel::*;
    use Z80Version::*;
    Some(match (hw_mode, version) {
        (0, _) if flags3.is_alt_hw_mode() => (Spectrum16, Extensions::empty()),
        (0, _) => (Spectrum48, Extensions::empty()),
        (1, _) if flags3.is_alt_hw_mode() => (Spectrum16, Extensions::IF1),
        (1, _) =>  (Spectrum48, Extensions::IF1),
        (2, _) =>  (Spectrum48, Extensions::SAM_RAM),
        (3, V2)|(4, V3) if flags3.is_alt_hw_mode() => (SpectrumPlus2, Extensions::empty()),
        (3, V2)|(4, V3) => (Spectrum128, Extensions::empty()),
        (3, V3) if flags3.is_alt_hw_mode() && mgt_type == 16 => (Spectrum16, Extensions::PLUS_D),
        (3, V3) if flags3.is_alt_hw_mode() && mgt_type <= 1 => (Spectrum16, Extensions::DISCIPLE),
        (3, V3) if mgt_type == 16 => (Spectrum48, Extensions::PLUS_D),
        (3, V3) if mgt_type <= 1 => (Spectrum48, Extensions::DISCIPLE),
        (4, V2)|(5, V3) => (Spectrum128, Extensions::IF1),
        (6, V3) if mgt_type == 16 => (Spectrum128, Extensions::PLUS_D),
        (6, V3) if mgt_type <= 1 => (Spectrum128, Extensions::DISCIPLE),
        (7, _)|(8, _) if flags3.is_alt_hw_mode() => (SpectrumPlus2A, Extensions::empty()),
        (7, _)|(8, _) => (SpectrumPlus3, Extensions::empty()),
        // (9, _)   => (Pentagon128, Extensions::empty()),
        // (10, _)  => (Scorpion256, Extensions::empty()),
        // (11, _)  => (DidaktikKompakt, Extensions::empty()),
        (12, _)  => (SpectrumPlus2, Extensions::empty()),
        (13, _)  => (SpectrumPlus2A, Extensions::empty()),
        (14, _)  => (TimexTC2048, Extensions::empty()),
        (15, _)  => (TimexTC2068, Extensions::empty()),
        (128, _) => (TimexTS2068, Extensions::empty()),
        _ => return None
    })
}

pub const fn all() -> Self

Returns the set containing all flags.

pub const fn bits(&self) -> u64

Returns the raw value of the flags currently stored.

pub const fn from_bits(bits: u64) -> Option<Self>

Convert from underlying bit representation, unless that representation contains bits that do not correspond to a flag.

pub const fn from_bits_truncate(bits: u64) -> Self

Convert from underlying bit representation, dropping any bits that do not correspond to flags.

pub const unsafe fn from_bits_unchecked(bits: u64) -> Self

Convert from underlying bit representation, preserving all bits (even those not corresponding to a defined flag).

Safety

The caller of the bitflags! macro can chose to allow or disallow extra bits for their bitflags type.

The caller of from_bits_unchecked() has to ensure that all bits correspond to a defined flag or that extra bits are valid for this bitflags type.

pub const fn is_empty(&self) -> bool

Returns true if no flags are currently stored.

pub const fn is_all(&self) -> bool

Returns true if all flags are currently set.

pub const fn intersects(&self, other: Self) -> bool

Returns true if there are flags common to both self and other.

Examples found in repository

src/snapshot.rs (line 327)

    pub fn validate_extensions(self, ext: Extensions) -> Result<(), Extensions> {
        use ComputerModel::*;
        match self {
            Spectrum128|SpectrumPlus2|SpectrumSE if ext.intersects(Extensions::SAM_RAM) => Err(Extensions::SAM_RAM),
            SpectrumPlus2A|SpectrumPlus3|SpectrumPlus3e
            if ext.intersects(Extensions::SAM_RAM|Extensions::IF1|Extensions::PLUS_D|Extensions::DISCIPLE) => {
                    Err(ext & (Extensions::SAM_RAM|Extensions::IF1|Extensions::PLUS_D|Extensions::DISCIPLE))
            }
            TimexTC2068|TimexTS2068 if ext.intersects(Extensions::SAM_RAM) => Err(Extensions::SAM_RAM),
            _ => Ok(())
        }
    }
}

impl From<ComputerModel> for &str {
    fn from(model: ComputerModel) -> Self {
        use ComputerModel::*;
        match model {
            Spectrum16     => "ZX Spectrum 16k",
            Spectrum48     => "ZX Spectrum 48k",
            SpectrumNTSC   => "ZX Spectrum NTSC",
            Spectrum128    => "ZX Spectrum 128k",
            SpectrumPlus2  => "ZX Spectrum +2",
            SpectrumPlus2A => "ZX Spectrum +2A",
            SpectrumPlus3  => "ZX Spectrum +3",
            SpectrumPlus3e => "ZX Spectrum +3e",
            SpectrumSE     => "ZX Spectrum SE",
            TimexTC2048    => "Timex TC2048",
            TimexTC2068    => "Timex TC2068",
            TimexTS2068    => "Timex TS2068",
        }
    }
}

impl From<&'_ ComputerModel> for &'static str {
    fn from(model: &ComputerModel) -> Self {
        (*model).into()
    }
}

impl fmt::Display for ComputerModel {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        <&str>::from(self).fmt(f)
    }
}

impl fmt::Display for Extensions {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        if self.intersects(Extensions::IF1) {
            f.write_str(" + IF1")?;
        }
        if self.intersects(Extensions::ULA_PLUS) {
            f.write_str(" + ULAPlus")?;
        }
        if self.intersects(Extensions::PLUS_D) {
            f.write_str(" + MGT+D")?;
        }
        if self.intersects(Extensions::DISCIPLE) {
            f.write_str(" + DISCiPLE")?;
        }
        if self.intersects(Extensions::SAM_RAM) {
            f.write_str(" + SamRam")?;
        }
        Ok(())
    }

src/z80/loader.rs (line 78)

fn mem_page_to_range(page: u8, model: ComputerModel, ext: Extensions) -> Option<MemoryRange> {
    use ComputerModel::*;
    match model {
        Spectrum16|Spectrum48|
        TimexTC2048|TimexTS2068|TimexTC2068 => {
            Some(match page {
                 0 => MemoryRange::Rom(0..PAGE_SIZE),
                 1 if ext.intersects(Extensions::IF1) => MemoryRange::Interface1Rom,
                 1 if ext.intersects(Extensions::PLUS_D) => MemoryRange::PlusDRom,
                 1 if ext.intersects(Extensions::DISCIPLE) => MemoryRange::DiscipleRom,
                 2 if ext.intersects(Extensions::SAM_RAM) => MemoryRange::SamRamRom(0..PAGE_SIZE),
                 3 if ext.intersects(Extensions::SAM_RAM) => MemoryRange::SamRamRom(PAGE_SIZE..2*PAGE_SIZE),
                 4 => MemoryRange::Ram(  PAGE_SIZE..2*PAGE_SIZE),
                 5 => MemoryRange::Ram(2*PAGE_SIZE..3*PAGE_SIZE),
                 6 if ext.intersects(Extensions::SAM_RAM) => MemoryRange::Ram(3*PAGE_SIZE..4*PAGE_SIZE),
                 7 if ext.intersects(Extensions::SAM_RAM) => MemoryRange::Ram(4*PAGE_SIZE..5*PAGE_SIZE),
                 8 => MemoryRange::Ram(0..PAGE_SIZE),
                11 => MemoryRange::MultifaceRom,
                 _ => return None
            })
        }
        Spectrum128|SpectrumPlus2|
        SpectrumPlus2A|SpectrumPlus3|SpectrumPlus3e|
        SpectrumSE => {
            Some(match page {
                0 => MemoryRange::Rom(PAGE_SIZE..2*PAGE_SIZE),
                1 if ext.intersects(Extensions::IF1) => MemoryRange::Interface1Rom,
                1 if ext.intersects(Extensions::PLUS_D) => MemoryRange::PlusDRom,
                1 if ext.intersects(Extensions::DISCIPLE) => MemoryRange::DiscipleRom,
                2 => MemoryRange::Rom(0..PAGE_SIZE),
                3..=10 => {
                    let address = (page - 3) as usize * PAGE_SIZE;
                    MemoryRange::Ram(address..address + PAGE_SIZE)
                }
                11..=18 if model == SpectrumSE => {
                    let address = (page - 11) as usize * PAGE_SIZE;
                    MemoryRange::Ram(address..address + PAGE_SIZE)                    
                }
                11 => MemoryRange::MultifaceRom,
                 _ => return None
            })
        }
        _ => None
    }
}

fn create_cpu(head: &Header) -> Result<Z80NMOS> {
    let mut cpu = Z80NMOS::default();
    cpu.reset();
    cpu.set_i(head.i);
    cpu.set_reg16(StkReg16::HL, u16::from_le_bytes(head.hl_alt));
    cpu.set_reg16(StkReg16::DE, u16::from_le_bytes(head.de_alt));
    cpu.set_reg16(StkReg16::BC, u16::from_le_bytes(head.bc_alt));
    cpu.exx();
    cpu.set_acc(head.a_alt);
    cpu.set_flags(CpuFlags::from_bits_truncate(head.f_alt));
    cpu.ex_af_af();
    cpu.set_reg16(StkReg16::HL, u16::from_le_bytes(head.hl));
    cpu.set_reg16(StkReg16::DE, u16::from_le_bytes(head.de));
    cpu.set_reg16(StkReg16::BC, u16::from_le_bytes(head.bc));
    cpu.set_index16(Prefix::Yfd, u16::from_le_bytes(head.iy));
    cpu.set_index16(Prefix::Xdd, u16::from_le_bytes(head.ix));
    cpu.set_iffs(head.iff1 != 0, head.iff2 != 0);
    cpu.set_r(Flags1::from(head.flags1).mix_r(head.r7));
    cpu.set_acc(head.a);
    cpu.set_flags(CpuFlags::from_bits_truncate(head.f));
    cpu.set_sp(u16::from_le_bytes(head.sp));
    cpu.set_im(Flags2::from(head.flags2).interrupt_mode()?);
    cpu.set_pc(u16::from_le_bytes(head.pc));
    Ok(cpu)
}

/// Loads a **Z80** file from `rd` into the provided snapshot `loader` implementing [SnapshotLoader].
///
/// # Errors
/// This function will return an error if the file size is incorrect or there is something wrong
/// with the format.
/// Other errors may also be returned from attempts to read the file.
pub fn load_z80<R: Read, S: SnapshotLoader>(
        mut rd: R,
        loader: &mut S
    ) -> Result<()>
{
    use ComputerModel::*;

    let header = Header::read_new_struct(rd.by_ref())?;
    let mut version = Z80Version::V1;

    let mut model = ComputerModel::Spectrum48;
    let mut extensions = Extensions::default();
    let mut cpu = create_cpu(&header)?;

    let header_ex = if cpu.get_pc() == 0 {
        let (ver, head_ex) = load_header_ex(rd.by_ref())?;
        version = ver;
        cpu.set_pc(u16::from_le_bytes(head_ex.pc));
        let (mdl, ext) = select_hw_model(version, &head_ex).ok_or_else(||
            io::Error::new(io::ErrorKind::InvalidData, "unsupported model")
        )?;
        model = mdl;
        extensions = ext;
        Some(head_ex)
    }
    else {
        None
    };

    let flags1 = Flags1::from(header.flags1);
    let border = flags1.border_color();
    let flags2 = Flags2::from(header.flags2);
    let joystick = flags2.joystick_model();
    let issue = model.applicable_issue(
        if flags2.is_issue2_emulation() {
            ReadEarMode::Issue2
        }
        else {
            ReadEarMode::Issue3
        }
    );

    loader.select_model(model, extensions, border, issue)
          .map_err(|e| io::Error::new(io::ErrorKind::Other, e))?;
    loader.select_joystick(joystick);
    loader.assign_cpu(CpuModel::NMOS(cpu));

    // clippy false positive: https://github.com/rust-lang/rust-clippy/issues/9274
    #[allow(clippy::read_zero_byte_vec)] {
    let mut buf = Vec::new();
    if version == Z80Version::V1 {
        if flags1.is_mem_compressed() {
            rd.read_to_end(&mut buf)?;
            let buf = match buf.get(buf.len() - 4..) {
                Some(MEMORY_V1_TERM) => &buf[..buf.len() - 4],
                _ => &buf[..]
            };
            let decompress = MemDecompress::new(buf);
            loader.read_into_memory(MemoryRange::Ram(0..3*PAGE_SIZE), decompress)?;
        }
        else {
            loader.read_into_memory(MemoryRange::Ram(0..3*PAGE_SIZE), rd)?;
        }
    }
    else {
        while let Some((len, page, is_compressed)) = load_mem_header(rd.by_ref())? {
            let range = mem_page_to_range(page, model, extensions).ok_or_else(||
                io::Error::new(io::ErrorKind::InvalidData, "unsupported memory page")
            )?;
            if is_compressed {
                buf.resize(len, 0);
                rd.read_exact(&mut buf)?;
                let decompress = MemDecompress::new(&buf);
                loader.read_into_memory(range, decompress)?;
            }
            else {
                loader.read_into_memory(range, rd.by_ref().take(len as u64))?;
            }
        }
    }}

    if let Some(head_ex) = header_ex {
        if let Some(choice) = select_ay_model(model, Flags3::from(head_ex.flags3)) {
            loader.setup_ay(choice, head_ex.ay_sel_reg.into(), &head_ex.ay_regs);
        }

        if version == Z80Version::V3 {
            let ts = z80_to_cycles(u16::from_le_bytes(head_ex.ts_lo), head_ex.ts_hi, model);
            loader.set_clock(ts);
            let data = head_ex.port2;
            if data != 0 {
                match model {
                    SpectrumPlus2A|SpectrumPlus3|SpectrumPlus3e|
                    SpectrumSE => {
                        loader.write_port(0x1ffd, data);
                    }
                    _ => {}
                }
            }
        }

        match model {
            TimexTC2048|TimexTS2068|TimexTC2068 => {
                loader.write_port(0xf4, head_ex.port1);
            }
            Spectrum128|SpectrumPlus2|
            SpectrumPlus2A|SpectrumPlus3|SpectrumPlus3e|
            SpectrumSE => {
                loader.write_port(0x7ffd, head_ex.port1);
            }
            _ => {}
        }
        match model {
            TimexTC2048|TimexTS2068|TimexTC2068 => {
                loader.write_port(0xff, head_ex.ifrom);
            }
            Spectrum16|Spectrum48|
            Spectrum128|SpectrumPlus2|
            SpectrumPlus2A|SpectrumPlus3|SpectrumPlus3e|
            SpectrumSE
            if head_ex.ifrom == 0xff && extensions.intersects(Extensions::IF1) => {
                loader.interface1_rom_paged_in();
            }
            _ => {}
        }
    }
    Ok(())
}

src/z80/saver.rs (line 81)

fn select_hw_model_v2<S: SnapshotCreator>(
        model: ComputerModel,
        ext: Extensions,
        snapshot: &S,
        result: &mut SnapshotResult
    ) -> Result<(u8, bool)>
{
    use ComputerModel::*;
    if ext.intersects(Extensions::PLUS_D) && snapshot.is_plus_d_rom_paged_in()
       || ext.intersects(Extensions::DISCIPLE) && snapshot.is_disciple_rom_paged_in()
       || ext.intersects(Extensions::TR_DOS) && snapshot.is_tr_dos_rom_paged_in()
       || ext.contains(Extensions::IF1|Extensions::SAM_RAM) && snapshot.is_interface1_rom_paged_in()
    {
        return Err(io::Error::new(io::ErrorKind::InvalidInput,
                "Z80: can't create a version 2 snapshot with the external ROM paged in"))
    }
    if (ext&!(Extensions::IF1|Extensions::SAM_RAM)) != Extensions::NONE
       || ext.contains(Extensions::IF1|Extensions::SAM_RAM)
    {
        result.insert(SnapshotResult::EXTENSTION_NSUP);
    }
    Ok(match model {
        Spectrum16 if ext.intersects(Extensions::SAM_RAM) => (2, true),
        Spectrum16 if ext.intersects(Extensions::IF1) => (1, true),
        Spectrum16 => (0, true),
        Spectrum48 if ext.intersects(Extensions::SAM_RAM) => (2, false),
        Spectrum48 if ext.intersects(Extensions::IF1) => (1, false),
        Spectrum48 => (0, false),
        SpectrumNTSC => {
            result.insert(SnapshotResult::MODEL_NSUP);
            (if ext.intersects(Extensions::SAM_RAM) { 2 }
             else { ext.intersects(Extensions::IF1) as u8 }, false)
        }
        Spectrum128 if ext.intersects(Extensions::IF1) => (4, false),
        Spectrum128 => (3, false),
        SpectrumPlus2 if ext.intersects(Extensions::IF1) => (4, true),
        SpectrumPlus2 => (3, true),
        SpectrumPlus2A => (7, true),
        SpectrumPlus3 => (7, false),
        SpectrumPlus3e => {
            result.insert(SnapshotResult::MODEL_NSUP);
            (7, false)
        }
        SpectrumSE => {
            return Err(io::Error::new(io::ErrorKind::InvalidInput,
                "Z80: can't create a snapshot of SpectrumSE"))
        }
        TimexTC2048|TimexTC2068|TimexTS2068 if ext.intersects(Extensions::IF1)
                             && snapshot.is_interface1_rom_paged_in() => {
            return Err(io::Error::new(io::ErrorKind::InvalidInput,
                "Z80: can't create a snapshot of Timex + IF1 with IF1 ROM paged in"))
        }
        TimexTC2048 => (14, false),
        TimexTC2068 => (15, false),
        TimexTS2068 => (128, false),
    })
}

fn select_hw_model_v3<S: SnapshotCreator>(
        model: ComputerModel,
        ext: Extensions,
        snapshot: &S,
        result: &mut SnapshotResult
    ) -> Result<(u8, bool)>
{
    use ComputerModel::*;
    if ext.intersects(Extensions::TR_DOS) && snapshot.is_tr_dos_rom_paged_in()
       || ext.contains(Extensions::IF1|Extensions::SAM_RAM) && snapshot.is_interface1_rom_paged_in()
    {
        return Err(io::Error::new(io::ErrorKind::InvalidInput,
                "Z80: can't create a version 3 snapshot with the external ROM paged in"))
    }
    if ext.contains(Extensions::IF1|Extensions::SAM_RAM) {
        result.insert(SnapshotResult::EXTENSTION_NSUP);
    }
    Ok(match model {
        Spectrum16 if ext.intersects(Extensions::SAM_RAM) => (2, true),
        Spectrum16 if ext.intersects(Extensions::IF1) => (1, true),
        Spectrum16 if ext.intersects(Extensions::PLUS_D|Extensions::DISCIPLE) => (3, true),
        Spectrum16 => (0, true),
        Spectrum48 if ext.intersects(Extensions::SAM_RAM) => (2, false),
        Spectrum48 if ext.intersects(Extensions::IF1) => (1, false),
        Spectrum48 if ext.intersects(Extensions::PLUS_D|Extensions::DISCIPLE) => (3, false),
        Spectrum48 => (0, false),
        SpectrumNTSC => {
            result.insert(SnapshotResult::MODEL_NSUP);
            (if ext.intersects(Extensions::SAM_RAM) { 2 }
            else if ext.intersects(Extensions::IF1) { 1 }
            else if ext.intersects(Extensions::PLUS_D|Extensions::DISCIPLE) { 3 }
            else { 0 }, false)
        }
        Spectrum128 if ext.intersects(Extensions::IF1) => (5, false),
        Spectrum128 if ext.intersects(Extensions::PLUS_D|Extensions::DISCIPLE) => (6, false),
        Spectrum128 => (4, false),
        SpectrumPlus2 if ext.intersects(Extensions::IF1) => (5, true),
        SpectrumPlus2 if ext.intersects(Extensions::PLUS_D|Extensions::DISCIPLE) => (6, true),
        SpectrumPlus2 => (4, true),
        SpectrumPlus2A => (7, true),
        SpectrumPlus3 => (7, false),
        SpectrumPlus3e => {
            result.insert(SnapshotResult::MODEL_NSUP);
            (7, false)
        }
        SpectrumSE => {
            return Err(io::Error::new(io::ErrorKind::InvalidInput,
                "Z80: can't create a snapshot of SpectrumSE"))
        }
        TimexTC2048|TimexTC2068|TimexTS2068 if (ext.intersects(Extensions::IF1) && snapshot.is_interface1_rom_paged_in())
                             || (ext.intersects(Extensions::PLUS_D) && snapshot.is_plus_d_rom_paged_in())
                             || (ext.intersects(Extensions::DISCIPLE) && snapshot.is_disciple_rom_paged_in())
                             => {
            return Err(io::Error::new(io::ErrorKind::InvalidInput,
                "Z80: can't create a snapshot of Timex with extension ROM paged in"))
        }
        TimexTC2048 => (14, false),
        TimexTC2068 => (15, false),
        TimexTS2068 => (128, false),
    })
}

type HwModelSelector<S> = fn(
        ComputerModel, Extensions, &S, &mut SnapshotResult
    ) -> Result<(u8, bool)>;

fn init_z80_header_ex<S: SnapshotCreator, C: Cpu>(
        head_ex: &mut HeaderEx,
        cpu: C,
        model: ComputerModel,
        ext: Extensions,
        snapshot: &S,
        select_hw_model: HwModelSelector<S>,
        result: &mut SnapshotResult
    ) -> Result<()>
{
    use ComputerModel::*;
    head_ex.pc = cpu.get_pc().to_le_bytes();
    let (hw_mode, alt_hw) = select_hw_model(model, ext, snapshot, result)?;
    let mut flags3 = Flags3::empty();
    flags3.set(Flags3::ALT_HW_MODE, alt_hw);
    head_ex.hw_mode = hw_mode;
    let res = if let Some(res) = snapshot.ay_state(Ay3_891xDevice::Ay128k) {
        if snapshot.ay_state(Ay3_891xDevice::FullerBox).is_some()
           || snapshot.ay_state(Ay3_891xDevice::Melodik).is_some()
        {
            result.insert(SnapshotResult::SOUND_CHIP_NSUP);
        }
        Some(res)
    }
    else if let Some(res) = snapshot.ay_state(Ay3_891xDevice::FullerBox) {
        flags3.insert(Flags3::AY_SOUND_EMU|Flags3::AY_FULLER_BOX);
        Some(res)
    }
    else if let Some(res) = snapshot.ay_state(Ay3_891xDevice::Melodik) {
        flags3.insert(Flags3::AY_SOUND_EMU);
        Some(res)
    }
    else {
        snapshot.ay_state(Ay3_891xDevice::Timex)
    };
    if let Some((ay_sel_reg, ay_regs)) = res {
        head_ex.ay_sel_reg = ay_sel_reg.into();
        head_ex.ay_regs = *ay_regs;
    }

    head_ex.port1 = match model {
        Spectrum128|SpectrumPlus2|SpectrumPlus2A|SpectrumPlus3|SpectrumPlus3e|
        SpectrumSE => snapshot.ula128_flags().bits(),
        TimexTC2048|TimexTC2068|TimexTS2068 => snapshot.timex_memory_banks(),
        _ => 0
    };
    head_ex.ifrom = match model {
        TimexTC2048|TimexTS2068|TimexTC2068 => {
            if ext.intersects(Extensions::IF1|Extensions::PLUS_D|Extensions::DISCIPLE) {
                result.insert(SnapshotResult::EXTENSTION_NSUP);
            }
            snapshot.timex_flags().bits()
        }
        _ if ext.intersects(Extensions::IF1) && snapshot.is_interface1_rom_paged_in() => {
            !0
        }
        _ => 0
    };
    head_ex.flags3 = flags3.bits();
    Ok(())
}

fn save_ram_pages<W: Write, S: SnapshotCreator, I: Iterator<Item=(u8, usize)>>(
        mut wr: W,
        snapshot: &S,
        pages: I
    ) -> Result<()>
{
    let mut buf = Vec::with_capacity(0x1000);
    for (ptype, page) in pages {
        buf.clear();
        let mem_slice = snapshot.memory_ref(MemoryRange::Ram(page * PAGE_SIZE..(page + 1) * PAGE_SIZE))?;
        compress_write_all(mem_slice, &mut buf)?;
        let (mem_head, slice) = match buf.len().try_into() {
            Ok(core::u16::MAX)|Err(..) => {
                (MemoryHeader::new(core::u16::MAX, ptype), mem_slice)
            }
            Ok(length) => (MemoryHeader::new(length, ptype), &buf[..]),
        };
        mem_head.write_struct(wr.by_ref())?;
        wr.write_all(slice)?;
    }
    wr.flush()
}

fn save_all_v2v3<W: Write, S: SnapshotCreator>(
        version: Z80Version,
        snapshot: &S,
        model: ComputerModel,
        header: &Header,
        head_ex: &HeaderEx,
        mut wr: W
    ) -> Result<()>
{
    use ComputerModel::*;
    header.write_struct(wr.by_ref())?;
    let ex_len: u16 = match version {
        Z80Version::V2 => 23,
        Z80Version::V3 if head_ex.port2 != 0 => 55,
        Z80Version::V3 => 54,
        _ => unreachable!()
    };
    wr.write_all(&ex_len.to_le_bytes()[..])?;
    head_ex.write_struct_with_limit(wr.by_ref(), ex_len as usize)?;

    match model {
        Spectrum16 => {
            save_ram_pages(wr, snapshot, iter::once((8, 0)))
        }
        Spectrum48|SpectrumNTSC|TimexTC2048|TimexTS2068|TimexTC2068 => {
            save_ram_pages(wr, snapshot,
                [(8, 0), (4, 1), (5, 2)].iter().copied())
        }
        Spectrum128|SpectrumPlus2|SpectrumPlus2A|SpectrumPlus3|SpectrumPlus3e => {
            save_ram_pages(wr, snapshot,
                (0..8).map(|page| (page as u8 + 3, page))
            )
        }
        _ => unreachable!()
    }
}

fn get_nmos_cpu(cpu: CpuModel, result: &mut SnapshotResult) -> Z80NMOS {
    match cpu {
        CpuModel::NMOS(cpu) => cpu,
        CpuModel::CMOS(cpu) => {
            result.insert(SnapshotResult::CPU_MODEL_NSUP);
            cpu.into_flavour()
        },
        CpuModel::BM1(cpu) => {
            result.insert(SnapshotResult::CPU_MODEL_NSUP);
            cpu.into_flavour()
        }
    }
}

/// Saves a **Z80** file version 1 into `wr` from the provided reference to a `snapshot` struct
/// implementing [SnapshotCreator].
///
/// # Errors
/// This function may return an error from attempts to write the file or if for some reason
/// a snapshot could not be created.
pub fn save_z80v1<C: SnapshotCreator, W: Write>(
        snapshot: &C,
        mut wr: W
    ) -> Result<SnapshotResult>
{
    use ComputerModel::*;
    let mut result = SnapshotResult::OK;

    let model = snapshot.model();
    match model {
        Spectrum48 => {},
        Spectrum16|SpectrumNTSC|TimexTC2048 => {
            result.insert(SnapshotResult::MODEL_NSUP);
        }
        _ => return Err(io::Error::new(io::ErrorKind::InvalidInput,
                        "Z80: can't create a version 1 snapshot of this computer model"))
    };
    let extensions = snapshot.extensions();
    if let Err(bad_ext) = model.validate_extensions(extensions) {
        return Err(io::Error::new(io::ErrorKind::InvalidInput,
            format!("Z80: the model {} can't be saved with {}", model, bad_ext)))
    }

    if extensions.intersects(Extensions::IF1) && snapshot.is_interface1_rom_paged_in()
       || extensions.intersects(Extensions::PLUS_D) && snapshot.is_plus_d_rom_paged_in()
       || extensions.intersects(Extensions::DISCIPLE) && snapshot.is_disciple_rom_paged_in()
       || extensions.intersects(Extensions::TR_DOS) && snapshot.is_tr_dos_rom_paged_in()
    {
        return Err(io::Error::new(io::ErrorKind::InvalidInput,
                "Z80: can't create a version 1 snapshot with the external ROM paged in"))
    }
    if extensions != Extensions::NONE {
        result.insert(SnapshotResult::EXTENSTION_NSUP);
    }

    let cpu = get_nmos_cpu(snapshot.cpu(), &mut result);
    let border = snapshot.border_color();
    let issue = snapshot.issue();
    let joystick = snapshot.joystick();

    if snapshot.ay_state(Ay3_891xDevice::Ay128k).is_some()
       || snapshot.ay_state(Ay3_891xDevice::Melodik).is_some()
       || snapshot.ay_state(Ay3_891xDevice::FullerBox).is_some()
       || snapshot.ay_state(Ay3_891xDevice::Timex).is_some()
    {
        result.insert(SnapshotResult::SOUND_CHIP_NSUP);
    }

    let mut header = Header::default();
    init_z80_header(
        &mut header,
        Z80Version::V1,
        &cpu,
        border,
        issue,
        joystick,
        &mut result
    );

    header.write_struct(wr.by_ref())?;
    let is_16k = model == ComputerModel::Spectrum16;
    let ramend = if is_16k { 0x4000 } else { 0xC000 };
    let mem_slice = snapshot.memory_ref(MemoryRange::Ram(0..ramend))?;
    compress_write_all(mem_slice, wr.by_ref())?;
    if is_16k {
        compress_repeat_write_all(!0, 0x8000, wr.by_ref())?;
    }

    wr.write_all(MEMORY_V1_TERM)?;
    wr.flush()?;
    Ok(result)
}

/// Saves a **Z80** file version 2 into `wr` from the provided reference to a `snapshot` struct
/// implementing [SnapshotCreator].
///
/// # Errors
/// This function may return an error from attempts to write the file or if for some reason
/// a snapshot could not be created.
pub fn save_z80v2<C: SnapshotCreator, W: Write>(
        snapshot: &C,
        wr: W
    ) -> Result<SnapshotResult>
{
    let mut result = SnapshotResult::OK;
    let model = snapshot.model();
    let ext = snapshot.extensions();
    let border = snapshot.border_color();
    let issue = snapshot.issue();
    let joystick = snapshot.joystick();
    let cpu = get_nmos_cpu(snapshot.cpu(), &mut result);
    if !is_cpu_safe_for_snapshot(&cpu) {
        return Err(io::Error::new(io::ErrorKind::InvalidInput, "Z80: can't safely snapshot the CPU state"))
    }
    if let Err(bad_ext) = model.validate_extensions(ext) {
        return Err(io::Error::new(io::ErrorKind::InvalidInput,
            format!("Z80: the model {} can't be saved with {}", model, bad_ext)))
    }

    let mut header = Header::default();
    init_z80_header(
        &mut header,
        Z80Version::V2,
        &cpu,
        border,
        issue,
        joystick,
        &mut result
    );

    let mut head_ex = HeaderEx::default();
    init_z80_header_ex(
        &mut head_ex,
        cpu,
        model,
        ext,
        snapshot,
        select_hw_model_v2,
        &mut result
    )?;

    save_all_v2v3(Z80Version::V2, snapshot, model, &header, &head_ex, wr)?;
    Ok(result)
}

/// Saves a **Z80** file version 3 into `wr` from the provided reference to a `snapshot` struct
/// implementing [SnapshotCreator].
///
/// # Errors
/// This function may return an error from attempts to write the file or if for some reason
/// a snapshot could not be created.
pub fn save_z80v3<C: SnapshotCreator, W: Write>(
        snapshot: &C,
        wr: W
    ) -> Result<SnapshotResult>
{
    use ComputerModel::*;
    let mut result = SnapshotResult::OK;
    let model = snapshot.model();
    let ext = snapshot.extensions();
    let border = snapshot.border_color();
    let issue = snapshot.issue();
    let joystick = snapshot.joystick();
    let cpu = get_nmos_cpu(snapshot.cpu(), &mut result);
    if !is_cpu_safe_for_snapshot(&cpu) {
        return Err(io::Error::new(io::ErrorKind::InvalidInput, "Z80: can't safely snapshot the CPU state"))
    }
    if let Err(bad_ext) = model.validate_extensions(ext) {
        return Err(io::Error::new(io::ErrorKind::InvalidInput,
            format!("Z80: the model {} can't be saved with {}", model, bad_ext)))
    }

    let mut header = Header::default();
    init_z80_header(
        &mut header,
        Z80Version::V3,
        &cpu,
        border,
        issue,
        joystick,
        &mut result
    );

    let mut head_ex = HeaderEx::default();
    init_z80_header_ex(
        &mut head_ex,
        cpu,
        model,
        ext,
        snapshot,
        select_hw_model_v3,
        &mut result
    )?;

    let (ts_lo, ts_hi) = cycles_to_z80(snapshot.current_clock(), model);
    head_ex.ts_lo = ts_lo.to_le_bytes();
    head_ex.ts_hi = ts_hi;
    if (ext.intersects(Extensions::PLUS_D) && snapshot.is_plus_d_rom_paged_in())
        || (ext.intersects(Extensions::DISCIPLE) && snapshot.is_disciple_rom_paged_in())
    {
        head_ex.mgt_rom = !0;
    }

    if let Some(JoystickModel::Sinclair2) = joystick {
        head_ex.joy_bindings = [ 3, 1, 3, 2, 3, 4, 3, 8, 3,10];
        head_ex.joy_ascii    = [31, 0,32, 0,33, 0,34, 0,35, 0];
    }

    match model {
        SpectrumPlus2A|SpectrumPlus3|SpectrumPlus3e => {
            head_ex.port2 = snapshot.ula3_flags().bits();
        }
        _ => {
            head_ex.fn1 = !0;
            if !(ext.intersects(Extensions::PLUS_D) && snapshot.is_plus_d_rom_paged_in()) {
                head_ex.fn2 = !0;
            }
        }
    }

    if ext.intersects(Extensions::PLUS_D) {
        head_ex.mgt_type = 16;
    }

    // head_ex.flags4 = 0;
    // head_ex.disciple1 = 0;
    // head_ex.disciple2 = 0;

    save_all_v2v3(Z80Version::V3, snapshot, model, &header, &head_ex, wr)?;
    Ok(result)
}

src/sna.rs (line 323)

pub fn save_sna<C: SnapshotCreator, W: Write>(
        snapshot: &C,
        mut wr: W
    ) -> Result<SnapshotResult>
{
    use ComputerModel::*;
    let mut result = SnapshotResult::KEYB_ISSUE_NSUP;
    let model = snapshot.model();
    let is_128 = match model {
        Spectrum48 => false,
        Spectrum128 => true,
        SpectrumPlus2|SpectrumPlus2A|SpectrumPlus3|SpectrumPlus3e|SpectrumSE => {
            result.insert(SnapshotResult::MODEL_NSUP);
            true
        }
        Spectrum16|SpectrumNTSC|TimexTC2048|TimexTC2068|TimexTS2068 => {
            result.insert(SnapshotResult::MODEL_NSUP);
            false
        }
    };

    let extensions = snapshot.extensions();
    if extensions.intersects(Extensions::IF1) && snapshot.is_interface1_rom_paged_in()
       || extensions.intersects(Extensions::PLUS_D) && snapshot.is_plus_d_rom_paged_in()
    {
        return Err(Error::new(ErrorKind::InvalidInput,
                "SNA: can't create a snapshot with the external ROM paged in"))
    }
    if extensions != Extensions::NONE && extensions != Extensions::TR_DOS {
        result.insert(SnapshotResult::EXTENSTION_NSUP);
    }

    let cpu = match snapshot.cpu() {
        CpuModel::NMOS(cpu) => cpu,
        CpuModel::CMOS(cpu) => {
            result.insert(SnapshotResult::CPU_MODEL_NSUP);
            cpu.into_flavour()
        },
        CpuModel::BM1(cpu) => {
            result.insert(SnapshotResult::CPU_MODEL_NSUP);
            cpu.into_flavour()
        }
    };

    if !is_cpu_safe_for_snapshot(&cpu) {
        return Err(Error::new(ErrorKind::InvalidInput, "SNA: can't safely snapshot the CPU state"))
    }

    let mut sna = make_header(&cpu);
    sna.border = snapshot.border_color().into();

    if snapshot.joystick().is_some() {
        result.insert(SnapshotResult::JOYSTICK_NSUP);
    }

    if is_128 || snapshot.ay_state(Ay3_891xDevice::Melodik).is_some()
              || snapshot.ay_state(Ay3_891xDevice::FullerBox).is_some()
              || snapshot.ay_state(Ay3_891xDevice::Timex).is_some() {
        result.insert(SnapshotResult::SOUND_CHIP_NSUP);
    }

    if !is_128 {
        return save_sna48(snapshot, cpu, model == ComputerModel::Spectrum16, sna, wr, result)
    }

    let memflags = snapshot.ula128_flags();
    let mut sna_ext = SnaHeader128 {
        pc: cpu.get_pc().to_le_bytes(),
        port_data: memflags.bits(),
        ..Default::default()
    };

    if extensions.intersects(Extensions::TR_DOS) {
        sna_ext.trdos_rom = snapshot.is_tr_dos_rom_paged_in().into();
    }

    sna.write_struct(wr.by_ref())?;

    let last_page: usize = memflags.last_ram_page_bank();
    let index48 = [5,2,last_page];
    for page in index48.iter() {
        wr.write_all(
            snapshot.memory_ref(MemoryRange::Ram(page * PAGE_SIZE..(page + 1) * PAGE_SIZE))?
        )?;
    }

    sna_ext.write_struct(wr.by_ref())?;

    for page in (0..8).filter(|n| !index48.contains(n) && *n != last_page) {
        wr.write_all(
            snapshot.memory_ref(MemoryRange::Ram(page * PAGE_SIZE..(page + 1) * PAGE_SIZE))?
        )?;
    }

    wr.flush()?;
    Ok(result)
}

pub const fn contains(&self, other: Self) -> bool

Returns true if all of the flags in other are contained within self.

Examples found in repository

src/z80/saver.rs (line 84)

fn select_hw_model_v2<S: SnapshotCreator>(
        model: ComputerModel,
        ext: Extensions,
        snapshot: &S,
        result: &mut SnapshotResult
    ) -> Result<(u8, bool)>
{
    use ComputerModel::*;
    if ext.intersects(Extensions::PLUS_D) && snapshot.is_plus_d_rom_paged_in()
       || ext.intersects(Extensions::DISCIPLE) && snapshot.is_disciple_rom_paged_in()
       || ext.intersects(Extensions::TR_DOS) && snapshot.is_tr_dos_rom_paged_in()
       || ext.contains(Extensions::IF1|Extensions::SAM_RAM) && snapshot.is_interface1_rom_paged_in()
    {
        return Err(io::Error::new(io::ErrorKind::InvalidInput,
                "Z80: can't create a version 2 snapshot with the external ROM paged in"))
    }
    if (ext&!(Extensions::IF1|Extensions::SAM_RAM)) != Extensions::NONE
       || ext.contains(Extensions::IF1|Extensions::SAM_RAM)
    {
        result.insert(SnapshotResult::EXTENSTION_NSUP);
    }
    Ok(match model {
        Spectrum16 if ext.intersects(Extensions::SAM_RAM) => (2, true),
        Spectrum16 if ext.intersects(Extensions::IF1) => (1, true),
        Spectrum16 => (0, true),
        Spectrum48 if ext.intersects(Extensions::SAM_RAM) => (2, false),
        Spectrum48 if ext.intersects(Extensions::IF1) => (1, false),
        Spectrum48 => (0, false),
        SpectrumNTSC => {
            result.insert(SnapshotResult::MODEL_NSUP);
            (if ext.intersects(Extensions::SAM_RAM) { 2 }
             else { ext.intersects(Extensions::IF1) as u8 }, false)
        }
        Spectrum128 if ext.intersects(Extensions::IF1) => (4, false),
        Spectrum128 => (3, false),
        SpectrumPlus2 if ext.intersects(Extensions::IF1) => (4, true),
        SpectrumPlus2 => (3, true),
        SpectrumPlus2A => (7, true),
        SpectrumPlus3 => (7, false),
        SpectrumPlus3e => {
            result.insert(SnapshotResult::MODEL_NSUP);
            (7, false)
        }
        SpectrumSE => {
            return Err(io::Error::new(io::ErrorKind::InvalidInput,
                "Z80: can't create a snapshot of SpectrumSE"))
        }
        TimexTC2048|TimexTC2068|TimexTS2068 if ext.intersects(Extensions::IF1)
                             && snapshot.is_interface1_rom_paged_in() => {
            return Err(io::Error::new(io::ErrorKind::InvalidInput,
                "Z80: can't create a snapshot of Timex + IF1 with IF1 ROM paged in"))
        }
        TimexTC2048 => (14, false),
        TimexTC2068 => (15, false),
        TimexTS2068 => (128, false),
    })
}

fn select_hw_model_v3<S: SnapshotCreator>(
        model: ComputerModel,
        ext: Extensions,
        snapshot: &S,
        result: &mut SnapshotResult
    ) -> Result<(u8, bool)>
{
    use ComputerModel::*;
    if ext.intersects(Extensions::TR_DOS) && snapshot.is_tr_dos_rom_paged_in()
       || ext.contains(Extensions::IF1|Extensions::SAM_RAM) && snapshot.is_interface1_rom_paged_in()
    {
        return Err(io::Error::new(io::ErrorKind::InvalidInput,
                "Z80: can't create a version 3 snapshot with the external ROM paged in"))
    }
    if ext.contains(Extensions::IF1|Extensions::SAM_RAM) {
        result.insert(SnapshotResult::EXTENSTION_NSUP);
    }
    Ok(match model {
        Spectrum16 if ext.intersects(Extensions::SAM_RAM) => (2, true),
        Spectrum16 if ext.intersects(Extensions::IF1) => (1, true),
        Spectrum16 if ext.intersects(Extensions::PLUS_D|Extensions::DISCIPLE) => (3, true),
        Spectrum16 => (0, true),
        Spectrum48 if ext.intersects(Extensions::SAM_RAM) => (2, false),
        Spectrum48 if ext.intersects(Extensions::IF1) => (1, false),
        Spectrum48 if ext.intersects(Extensions::PLUS_D|Extensions::DISCIPLE) => (3, false),
        Spectrum48 => (0, false),
        SpectrumNTSC => {
            result.insert(SnapshotResult::MODEL_NSUP);
            (if ext.intersects(Extensions::SAM_RAM) { 2 }
            else if ext.intersects(Extensions::IF1) { 1 }
            else if ext.intersects(Extensions::PLUS_D|Extensions::DISCIPLE) { 3 }
            else { 0 }, false)
        }
        Spectrum128 if ext.intersects(Extensions::IF1) => (5, false),
        Spectrum128 if ext.intersects(Extensions::PLUS_D|Extensions::DISCIPLE) => (6, false),
        Spectrum128 => (4, false),
        SpectrumPlus2 if ext.intersects(Extensions::IF1) => (5, true),
        SpectrumPlus2 if ext.intersects(Extensions::PLUS_D|Extensions::DISCIPLE) => (6, true),
        SpectrumPlus2 => (4, true),
        SpectrumPlus2A => (7, true),
        SpectrumPlus3 => (7, false),
        SpectrumPlus3e => {
            result.insert(SnapshotResult::MODEL_NSUP);
            (7, false)
        }
        SpectrumSE => {
            return Err(io::Error::new(io::ErrorKind::InvalidInput,
                "Z80: can't create a snapshot of SpectrumSE"))
        }
        TimexTC2048|TimexTC2068|TimexTS2068 if (ext.intersects(Extensions::IF1) && snapshot.is_interface1_rom_paged_in())
                             || (ext.intersects(Extensions::PLUS_D) && snapshot.is_plus_d_rom_paged_in())
                             || (ext.intersects(Extensions::DISCIPLE) && snapshot.is_disciple_rom_paged_in())
                             => {
            return Err(io::Error::new(io::ErrorKind::InvalidInput,
                "Z80: can't create a snapshot of Timex with extension ROM paged in"))
        }
        TimexTC2048 => (14, false),
        TimexTC2068 => (15, false),
        TimexTS2068 => (128, false),
    })
}

pub fn insert(&mut self, other: Self)

Inserts the specified flags in-place.

pub fn remove(&mut self, other: Self)

Removes the specified flags in-place.

pub fn toggle(&mut self, other: Self)

Toggles the specified flags in-place.

pub fn set(&mut self, other: Self, value: bool)

Inserts or removes the specified flags depending on the passed value.

pub const fn intersection(self, other: Self) -> Self

Returns the intersection between the flags in self and other.

Specifically, the returned set contains only the flags which are present in both self and other.

This is equivalent to using the & operator (e.g. ops::BitAnd), as in flags & other.

pub const fn union(self, other: Self) -> Self

Returns the union of between the flags in self and other.

Specifically, the returned set contains all flags which are present in either self or other, including any which are present in both (see Self::symmetric_difference if that is undesirable).

This is equivalent to using the | operator (e.g. ops::BitOr), as in flags | other.

pub const fn difference(self, other: Self) -> Self

Returns the difference between the flags in self and other.

Specifically, the returned set contains all flags present in self, except for the ones present in other.

It is also conceptually equivalent to the “bit-clear” operation: flags & !other (and this syntax is also supported).

This is equivalent to using the - operator (e.g. ops::Sub), as in flags - other.

pub const fn symmetric_difference(self, other: Self) -> Self

Returns the symmetric difference between the flags in self and other.

Specifically, the returned set contains the flags present which are present in self or other, but that are not present in both. Equivalently, it contains the flags present in exactly one of the sets self and other.

This is equivalent to using the ^ operator (e.g. ops::BitXor), as in flags ^ other.

pub const fn complement(self) -> Self

Returns the complement of this set of flags.

Specifically, the returned set contains all the flags which are not set in self, but which are allowed for this type.

Alternatively, it can be thought of as the set difference between Self::all() and self (e.g. Self::all() - self)

This is equivalent to using the ! operator (e.g. ops::Not), as in !flags.

Trait Implementations

impl Binary for Extensions

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl BitAnd<Extensions> for Extensions

fn bitand(self, other: Self) -> Self

Returns the intersection between the two sets of flags.

type Output = Extensions

The resulting type after applying the & operator.

impl BitAndAssign<Extensions> for Extensions

fn bitand_assign(&mut self, other: Self)

Disables all flags disabled in the set.

impl BitOr<Extensions> for Extensions

fn bitor(self, other: Extensions) -> Self

Returns the union of the two sets of flags.

type Output = Extensions

The resulting type after applying the | operator.

impl BitOrAssign<Extensions> for Extensions

fn bitor_assign(&mut self, other: Self)

Adds the set of flags.

impl BitXor<Extensions> for Extensions

fn bitxor(self, other: Self) -> Self

Returns the left flags, but with all the right flags toggled.

type Output = Extensions

The resulting type after applying the ^ operator.

impl BitXorAssign<Extensions> for Extensions

fn bitxor_assign(&mut self, other: Self)

Toggles the set of flags.

impl Clone for Extensions

fn clone(&self) -> Extensions

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Extensions

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for Extensions

fn default() -> Extensions

Returns the “default value” for a type.

impl Display for Extensions

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Extend<Extensions> for Extensions

fn extend<T: IntoIterator<Item = Self>>(&mut self, iterator: T)

Extends a collection with the contents of an iterator.

fn extend_one(&mut self, item: A)

🔬This is a nightly-only experimental API. (extend_one)

Extends a collection with exactly one element.

fn extend_reserve(&mut self, additional: usize)

🔬This is a nightly-only experimental API. (extend_one)

Reserves capacity in a collection for the given number of additional elements.

impl FromIterator<Extensions> for Extensions

fn from_iter<T: IntoIterator<Item = Self>>(iterator: T) -> Self

Creates a value from an iterator.

impl Hash for Extensions

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)where
    H: Hasher,
    Self: Sized,

Feeds a slice of this type into the given Hasher.

impl LowerHex for Extensions

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Not for Extensions

fn not(self) -> Self

Returns the complement of this set of flags.

type Output = Extensions

The resulting type after applying the ! operator.

impl Octal for Extensions

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Ord for Extensions

fn cmp(&self, other: &Extensions) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Selfwhere
    Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Selfwhere
    Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Selfwhere
    Self: Sized + PartialOrd<Self>,

Restrict a value to a certain interval.

impl PartialEq<Extensions> for Extensions

fn eq(&self, other: &Extensions) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd<Extensions> for Extensions

fn partial_cmp(&self, other: &Extensions) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

This method tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl Sub<Extensions> for Extensions

fn sub(self, other: Self) -> Self

Returns the set difference of the two sets of flags.

type Output = Extensions

The resulting type after applying the - operator.

impl SubAssign<Extensions> for Extensions

fn sub_assign(&mut self, other: Self)

Disables all flags enabled in the set.

impl UpperHex for Extensions

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Copy for Extensions

impl Eq for Extensions

impl StructuralEq for Extensions

impl StructuralPartialEq for Extensions