Struct spacetimedb_sats::product_type_element::ProductTypeElement

pub struct ProductTypeElement {
    pub name: Option<String>,
    pub algebraic_type: AlgebraicType,
}

A factor / element of a product type.

An element consist of an optional name and a type.

NOTE: Each element has an implicit element tag based on its order. Uniquely identifies an element similarly to protobuf tags.

Fields

name: Option<String>

The name of the field / element.

As our type system is structural, a type like { foo: U8 }, where foo: U8 is the ProductTypeElement, is inequal to { bar: U8 }, although their algebraic_types (U8) match.

algebraic_type: AlgebraicType

The type of the element.

Only values of this type can be stored in the element.

Implementations

impl ProductTypeElement

pub fn decode<'a>(bytes: &mut impl BufReader<'a>) -> Result<Self, DecodeError>

pub fn encode(&self, bytes: &mut impl BufWriter)

impl ProductTypeElement

pub const fn new(algebraic_type: AlgebraicType, name: Option<String>) -> Self

Returns an element with the given name and algebraic_type.

pub fn new_named(algebraic_type: AlgebraicType, name: impl Into<String>) -> Self

Returns a named element with name and algebraic_type.

pub fn name(&self) -> Option<&str>

Returns the name of the field.

pub fn has_name(&self, name: &str) -> bool

Returns whether the field has the given name.

Trait Implementations

impl Clone for ProductTypeElement

fn clone(&self) -> ProductTypeElement

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for ProductTypeElement

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for ProductTypeElement

fn deserialize<D: Deserializer<'de>>(deserializer: D) -> Result<Self, D::Error>

Deserialize this value from the given deserializer.

impl From<&ColumnSchema> for ProductTypeElement

fn from(value: &ColumnSchema) -> Self

Converts to this type from the input type.

impl From<AlgebraicType> for ProductTypeElement

fn from(value: AlgebraicType) -> Self

Converts to this type from the input type.

impl From<FieldDef<'_>> for ProductTypeElement

fn from(value: FieldDef<'_>) -> Self

Converts to this type from the input type.

impl Hash for ProductTypeElement

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 MetaType for ProductTypeElement

fn meta_type() -> AlgebraicType

Returns the type structure of this type as an AlgebraicType.

impl Ord for ProductTypeElement

fn cmp(&self, other: &ProductTypeElement) -> 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 + PartialOrd,

Restrict a value to a certain interval.

impl PartialEq for ProductTypeElement

fn eq(&self, other: &ProductTypeElement) -> 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 for ProductTypeElement

fn partial_cmp(&self, other: &ProductTypeElement) -> 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 Serialize for ProductTypeElement

fn serialize<S: Serializer>(&self, __serializer: S) -> Result<S::Ok, S::Error>

Serialize self in the data format of S using the provided serializer.

impl Eq for ProductTypeElement

impl StructuralPartialEq for ProductTypeElement