Struct spacetimedb_lib::ProductValue

pub struct ProductValue {
    pub elements: Vec<AlgebraicValue, Global>,
}

A product value is made of a a list of “elements” / “fields” / “factors” of other AlgebraicValues.

The type of a product value is a product type.

Fields

elements: Vec<AlgebraicValue, Global>

The values that make up this product value.

Implementations

impl ProductValue

pub fn decode<'a>( algebraic_type: &<ProductValue as Value>::Type, bytes: &mut impl BufReader<'a> ) -> Result<ProductValue, DecodeError>

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

impl ProductValue

pub fn new(elements: &[AlgebraicValue]) -> ProductValue

Returns a product value constructed from the given values in elements.

impl ProductValue

pub fn get_field( &self, index: usize, name: Option<&'static str> ) -> Result<&AlgebraicValue, InvalidFieldError>

Borrow the value at field of self indentified by index.

The name is non-functional and is only used for error-messages.

pub fn extract_field<'a, T>( &'a self, index: usize, name: Option<&'static str>, f: impl Fn(&'a AlgebraicValue) -> Option<T> + 'a ) -> Result<T, InvalidFieldError>

Extracts the value at field of self identified by index and then runs it through the function f which possibly returns a T derived from value.

pub fn field_as_bool( &self, index: usize, named: Option<&'static str> ) -> Result<bool, InvalidFieldError>

Interprets the value at field of self indentified by index as a bool.

pub fn field_as_u8( &self, index: usize, named: Option<&'static str> ) -> Result<u8, InvalidFieldError>

Interprets the value at field of self indentified by index as a u8.

pub fn field_as_u32( &self, index: usize, named: Option<&'static str> ) -> Result<u32, InvalidFieldError>

Interprets the value at field of self indentified by index as a u32.

pub fn field_as_i64( &self, index: usize, named: Option<&'static str> ) -> Result<i64, InvalidFieldError>

Interprets the value at field of self indentified by index as a i64.

pub fn field_as_i128( &self, index: usize, named: Option<&'static str> ) -> Result<i128, InvalidFieldError>

Interprets the value at field of self indentified by index as a i128.

pub fn field_as_u128( &self, index: usize, named: Option<&'static str> ) -> Result<u128, InvalidFieldError>

Interprets the value at field of self indentified by index as a u128.

pub fn field_as_str( &self, index: usize, named: Option<&'static str> ) -> Result<&str, InvalidFieldError>

Interprets the value at field of self indentified by index as a string slice.

pub fn field_as_bytes( &self, index: usize, named: Option<&'static str> ) -> Result<&[u8], InvalidFieldError>

Interprets the value at field of self indentified by index as a byte slice.

Trait Implementations

impl Clone for ProductValue

fn clone(&self) -> ProductValue

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for ProductValue

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

Formats the value using the given formatter.

impl From<&AlgebraicValue> for ProductValue

fn from(x: &AlgebraicValue) -> ProductValue

Converts to this type from the input type.

impl From<AlgebraicValue> for ProductValue

fn from(x: AlgebraicValue) -> ProductValue

Converts to this type from the input type.

impl From<ProductValue> for AlgebraicValue

fn from(x: ProductValue) -> AlgebraicValue

Converts to this type from the input type.

impl FromIterator<AlgebraicValue> for ProductValue

fn from_iter<T>(iter: T) -> ProductValuewhere T: IntoIterator<Item = AlgebraicValue>,

Creates a value from an iterator.

impl Hash for ProductValue

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

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 ProductValue

fn cmp(&self, other: &ProductValue) -> 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<ProductValue> for ProductValue

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

fn partial_cmp(&self, other: &ProductValue) -> 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 ProductValue

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

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

impl Serialize for ProductValue

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

Serialize this value into the given Serde serializer.

impl ToDataKey for ProductValue

fn to_data_key(&self) -> DataKey

impl Value for ProductValue

type Type = ProductType

The type of this value.

impl Eq for ProductValue

impl StructuralEq for ProductValue

impl StructuralPartialEq for ProductValue