reth_db::mdbx

Struct DatabaseFlags

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pub struct DatabaseFlags(/* private fields */);
Available on crate feature mdbx only.
Expand description

Database options.

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impl DatabaseFlags

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pub const REVERSE_KEY: DatabaseFlags

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pub const DUP_SORT: DatabaseFlags

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pub const INTEGER_KEY: DatabaseFlags

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pub const DUP_FIXED: DatabaseFlags

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pub const INTEGER_DUP: DatabaseFlags

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pub const REVERSE_DUP: DatabaseFlags

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pub const CREATE: DatabaseFlags

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pub const ACCEDE: DatabaseFlags

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impl DatabaseFlags

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pub const fn empty() -> DatabaseFlags

Get a flags value with all bits unset.

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pub const fn all() -> DatabaseFlags

Get a flags value with all known bits set.

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pub const fn bits(&self) -> u32

Get the underlying bits value.

The returned value is exactly the bits set in this flags value.

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pub const fn from_bits(bits: u32) -> Option<DatabaseFlags>

Convert from a bits value.

This method will return None if any unknown bits are set.

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pub const fn from_bits_truncate(bits: u32) -> DatabaseFlags

Convert from a bits value, unsetting any unknown bits.

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pub const fn from_bits_retain(bits: u32) -> DatabaseFlags

Convert from a bits value exactly.

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pub fn from_name(name: &str) -> Option<DatabaseFlags>

Get a flags value with the bits of a flag with the given name set.

This method will return None if name is empty or doesn’t correspond to any named flag.

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pub const fn is_empty(&self) -> bool

Whether all bits in this flags value are unset.

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pub const fn is_all(&self) -> bool

Whether all known bits in this flags value are set.

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

Whether any set bits in a source flags value are also set in a target flags value.

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

Whether all set bits in a source flags value are also set in a target flags value.

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

The bitwise or (|) of the bits in two flags values.

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

The intersection of a source flags value with the complement of a target flags value (&!).

This method is not equivalent to self & !other when other has unknown bits set. remove won’t truncate other, but the ! operator will.

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

The bitwise exclusive-or (^) of the bits in two flags values.

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

Call insert when value is true or remove when value is false.

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

The bitwise and (&) of the bits in two flags values.

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

The bitwise or (|) of the bits in two flags values.

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

The intersection of a source flags value with the complement of a target flags value (&!).

This method is not equivalent to self & !other when other has unknown bits set. difference won’t truncate other, but the ! operator will.

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

The bitwise exclusive-or (^) of the bits in two flags values.

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pub const fn complement(self) -> DatabaseFlags

The bitwise negation (!) of the bits in a flags value, truncating the result.

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impl DatabaseFlags

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pub const fn iter(&self) -> Iter<DatabaseFlags>

Yield a set of contained flags values.

Each yielded flags value will correspond to a defined named flag. Any unknown bits will be yielded together as a final flags value.

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pub const fn iter_names(&self) -> IterNames<DatabaseFlags>

Yield a set of contained named flags values.

This method is like iter, except only yields bits in contained named flags. Any unknown bits, or bits not corresponding to a contained flag will not be yielded.

Trait Implementations§

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impl Binary for DatabaseFlags

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

Formats the value using the given formatter. Read more
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impl BitAnd for DatabaseFlags

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

The bitwise and (&) of the bits in two flags values.

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type Output = DatabaseFlags

The resulting type after applying the & operator.
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impl BitAndAssign for DatabaseFlags

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fn bitand_assign(&mut self, other: DatabaseFlags)

The bitwise and (&) of the bits in two flags values.

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impl BitOr for DatabaseFlags

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fn bitor(self, other: DatabaseFlags) -> DatabaseFlags

The bitwise or (|) of the bits in two flags values.

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type Output = DatabaseFlags

The resulting type after applying the | operator.
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impl BitOrAssign for DatabaseFlags

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fn bitor_assign(&mut self, other: DatabaseFlags)

The bitwise or (|) of the bits in two flags values.

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impl BitXor for DatabaseFlags

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

The bitwise exclusive-or (^) of the bits in two flags values.

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type Output = DatabaseFlags

The resulting type after applying the ^ operator.
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impl BitXorAssign for DatabaseFlags

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fn bitxor_assign(&mut self, other: DatabaseFlags)

The bitwise exclusive-or (^) of the bits in two flags values.

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impl Default for DatabaseFlags

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fn default() -> DatabaseFlags

Returns the “default value” for a type. Read more
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impl Extend<DatabaseFlags> for DatabaseFlags

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

The bitwise or (|) of the bits in each flags value.

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fn extend_one(&mut self, item: A)

🔬This is a nightly-only experimental API. (extend_one #72631)
Extends a collection with exactly one element.
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fn extend_reserve(&mut self, additional: usize)

🔬This is a nightly-only experimental API. (extend_one #72631)
Reserves capacity in a collection for the given number of additional elements. Read more
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impl Flags for DatabaseFlags

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const FLAGS: &'static [Flag<DatabaseFlags>]

The set of defined flags.
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type Bits = u32

The underlying bits type.
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fn bits(&self) -> u32

Get the underlying bits value. Read more
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fn from_bits_retain(bits: u32) -> DatabaseFlags

Convert from a bits value exactly.
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fn empty() -> Self

Get a flags value with all bits unset.
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fn all() -> Self

Get a flags value with all known bits set.
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fn from_bits(bits: Self::Bits) -> Option<Self>

Convert from a bits value. Read more
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fn from_bits_truncate(bits: Self::Bits) -> Self

Convert from a bits value, unsetting any unknown bits.
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fn from_name(name: &str) -> Option<Self>

Get a flags value with the bits of a flag with the given name set. Read more
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fn iter(&self) -> Iter<Self>

Yield a set of contained flags values. Read more
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fn iter_names(&self) -> IterNames<Self>

Yield a set of contained named flags values. Read more
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fn is_empty(&self) -> bool

Whether all bits in this flags value are unset.
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fn is_all(&self) -> bool

Whether all known bits in this flags value are set.
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fn intersects(&self, other: Self) -> bool
where Self: Sized,

Whether any set bits in a source flags value are also set in a target flags value.
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fn contains(&self, other: Self) -> bool
where Self: Sized,

Whether all set bits in a source flags value are also set in a target flags value.
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fn insert(&mut self, other: Self)
where Self: Sized,

The bitwise or (|) of the bits in two flags values.
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fn remove(&mut self, other: Self)
where Self: Sized,

The intersection of a source flags value with the complement of a target flags value (&!). Read more
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fn toggle(&mut self, other: Self)
where Self: Sized,

The bitwise exclusive-or (^) of the bits in two flags values.
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fn set(&mut self, other: Self, value: bool)
where Self: Sized,

Call [Flags::insert] when value is true or [Flags::remove] when value is false.
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fn intersection(self, other: Self) -> Self

The bitwise and (&) of the bits in two flags values.
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fn union(self, other: Self) -> Self

The bitwise or (|) of the bits in two flags values.
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fn difference(self, other: Self) -> Self

The intersection of a source flags value with the complement of a target flags value (&!). Read more
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fn symmetric_difference(self, other: Self) -> Self

The bitwise exclusive-or (^) of the bits in two flags values.
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fn complement(self) -> Self

The bitwise negation (!) of the bits in a flags value, truncating the result.
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impl FromIterator<DatabaseFlags> for DatabaseFlags

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fn from_iter<T>(iterator: T) -> DatabaseFlags
where T: IntoIterator<Item = DatabaseFlags>,

The bitwise or (|) of the bits in each flags value.

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impl IntoIterator for DatabaseFlags

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type Item = DatabaseFlags

The type of the elements being iterated over.
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type IntoIter = Iter<DatabaseFlags>

Which kind of iterator are we turning this into?
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fn into_iter(self) -> <DatabaseFlags as IntoIterator>::IntoIter

Creates an iterator from a value. Read more
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impl LowerHex for DatabaseFlags

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

Formats the value using the given formatter. Read more
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impl Not for DatabaseFlags

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fn not(self) -> DatabaseFlags

The bitwise negation (!) of the bits in a flags value, truncating the result.

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type Output = DatabaseFlags

The resulting type after applying the ! operator.
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impl Octal for DatabaseFlags

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

Formats the value using the given formatter. Read more
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impl Sub for DatabaseFlags

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

The intersection of a source flags value with the complement of a target flags value (&!).

This method is not equivalent to self & !other when other has unknown bits set. difference won’t truncate other, but the ! operator will.

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type Output = DatabaseFlags

The resulting type after applying the - operator.
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impl SubAssign for DatabaseFlags

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fn sub_assign(&mut self, other: DatabaseFlags)

The intersection of a source flags value with the complement of a target flags value (&!).

This method is not equivalent to self & !other when other has unknown bits set. difference won’t truncate other, but the ! operator will.

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impl UpperHex for DatabaseFlags

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

Formats the value using the given formatter. Read more

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Size: 4 bytes