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FieldType

Enum FieldType 

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pub enum FieldType {
Show 19 variants Bool, Uint8, Int8, Uint16, Int16, Uint32, Int32, Uint64, Int64, Float32, Float64, String, WString, BoundedString(usize), BoundedWString(usize), Nested(&'static NestedType), Array(usize, &'static FieldType), Sequence(&'static FieldType), BoundedSequence(usize, &'static FieldType),
}
Expand description

CDR / ROS-IDL type of a single field.

Covers every variant Cyclone DDS’ dynamic-type C API needs for constructing a dds_topic_descriptor_t at runtime:

  • primitives (bool, [iu]{8,16,32,64}, f{32,64})
  • strings (unbounded / bounded; narrow / wide)
  • nested structs (recurse into a child &'static [Field])
  • fixed-size arrays (T[N])
  • unbounded sequences (sequence<T>)
  • bounded sequences (sequence<T, N>)

The recursive variants (Nested, Array, Sequence, BoundedSequence) take a &'static reference so the entire schema graph stays in .rodata with no heap touch.

Variants§

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Bool

IDL boolean — 1 byte, no alignment.

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Uint8

IDL octet / uint8 — 1 byte, no alignment.

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Int8

IDL int8 — 1 byte, no alignment.

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Uint16

IDL uint16 — 2 bytes, 2-byte aligned.

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Int16

IDL int16 — 2 bytes, 2-byte aligned.

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Uint32

IDL uint32 — 4 bytes, 4-byte aligned.

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Int32

IDL int32 — 4 bytes, 4-byte aligned.

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Uint64

IDL uint64 — 8 bytes, 8-byte aligned.

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Int64

IDL int64 — 8 bytes, 8-byte aligned.

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Float32

IDL float / float32 — 4 bytes, 4-byte aligned.

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Float64

IDL double / float64 — 8 bytes, 8-byte aligned.

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String

Unbounded string (UTF-8 narrow).

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WString

Unbounded wstring (UTF-16 wide).

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BoundedString(usize)

Bounded string<N> (UTF-8 narrow, max N bytes excluding null).

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BoundedWString(usize)

Bounded wstring<N> (UTF-16 wide, max N code units).

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Nested(&'static NestedType)

Nested struct field; the inner slice is the child’s schema.

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Array(usize, &'static FieldType)

Fixed-size array T[N].

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Sequence(&'static FieldType)

Unbounded sequence<T>.

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BoundedSequence(usize, &'static FieldType)

Bounded sequence<T, N>.

Trait Implementations§

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impl Clone for FieldType

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fn clone(&self) -> FieldType

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

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

Performs copy-assignment from source. Read more
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impl Copy for FieldType

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impl Debug for FieldType

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

Formats the value using the given formatter. Read more
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impl Eq for FieldType

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impl PartialEq for FieldType

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

Tests for self and other values to be equal, and is used by ==.
1.0.0 (const: unstable) · Source§

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl StructuralPartialEq for FieldType

Auto Trait Implementations§

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.