Enum HeaderTagFlag 

pub enum HeaderTagFlag {
    Required,
    Optional,
    Custom(u16),
}

Flags of a Multiboot2 header tag.

These flags tell whether a tag is required or optional for the bootloader.

This is a higher level abstraction for HeaderTagFlagRaw.

Variants

Required

The bootloader must provide this tag. If this is not possible, the bootloader will fail to load the kernel.

Optional

The bootloader should provide the tag if possible.

Custom(u16)

Value without a specified semantic in the specification.

Implementations

impl HeaderTagFlag

pub const fn val(self) -> u16

Returns the raw binary value.

pub const fn from_val(val: u16) -> Self

Constructs the variant corresponding to the raw binary value.

Values without a specified semantic are mapped to Self::Custom.

Trait Implementations

impl Clone for HeaderTagFlag

fn clone(&self) -> HeaderTagFlag

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for HeaderTagFlag

impl Debug for HeaderTagFlag

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

Formats the value using the given formatter.

impl Display for HeaderTagFlag

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

Formats the value using the given formatter.

impl Eq for HeaderTagFlag

impl From<HeaderTagFlag> for u16

fn from(val: HeaderTagFlag) -> Self

Converts to this type from the input type.

impl From<HeaderTagFlag> for HeaderTagFlagRaw

fn from(val: HeaderTagFlag) -> Self

Converts to this type from the input type.

impl From<HeaderTagFlagRaw> for HeaderTagFlag

fn from(raw: HeaderTagFlagRaw) -> Self

Converts to this type from the input type.

impl From<u16> for HeaderTagFlag

fn from(val: u16) -> Self

Converts to this type from the input type.

impl Hash for HeaderTagFlag

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 Ord for HeaderTagFlag

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

This method returns an Ordering between self and other.

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

where Self: Sized,

Compares and returns the maximum of two values.

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

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

fn clamp_to<R>(self, range: R) -> Self

where Self: Sized, R: ClampBounds<Self>,

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

Restrict a value to a certain range.

impl PartialEq for HeaderTagFlag

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

Equality operator ==.

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

Inequality operator !=.

impl PartialEq<HeaderTagFlag> for HeaderTagFlagRaw

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

Equality operator ==.

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

Inequality operator !=.

impl PartialEq<HeaderTagFlag> for u16

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

Equality operator ==.

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

Inequality operator !=.

impl PartialEq<HeaderTagFlagRaw> for HeaderTagFlag

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

Equality operator ==.

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

Inequality operator !=.

impl PartialEq<u16> for HeaderTagFlag

fn eq(&self, other: &u16) -> bool

Equality operator ==.

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

Inequality operator !=.

impl PartialOrd for HeaderTagFlag

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

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

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

Tests less than (for self and other) and is used by the < operator.

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

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

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

Tests greater than (for self and other) and is used by the > operator.

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

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

impl StructuralPartialEq for HeaderTagFlag