Struct Wrapping

pub struct Wrapping(/* private fields */);

It’s structured as follows:

       list wrapper length (4 bits)
       ↓     ↓ list_wrapping (1 == Required / 0 == Nullable)
   ┌───┐┌───────────┐
  0000_0000_0000_0000
  ↑
  inner_is_required flag (1 == required)

The list_wrapping is stored from innermost to outermost and use the start and end as the positions within the list_wrapping bits. Acting like a simplified fixed capacity VecDeque. For simplicity of bit shifts the list wrapping is stored from right to left.

Implementations

impl Wrapping

pub fn inner_is_required(self) -> bool

Is the innermost type required?

Examples:

• String => false
• String! => true
• [String!] => true
• [String]! => false

pub fn list_wrappings(self) -> impl DoubleEndedIterator + ExactSizeIterator

Innermost to outermost.

pub fn to_mutable(self) -> MutableWrapping

pub fn nullable() -> Wrapping

pub fn required() -> Wrapping

pub fn wrap_list(self) -> Wrapping

pub fn wrap_list_non_null(self) -> Wrapping

pub fn wrap_non_null(self) -> Wrapping

impl Wrapping

pub fn new(required: bool) -> Wrapping

pub fn is_nullable(self) -> bool

pub fn is_required(self) -> bool

pub fn is_list(self) -> bool

pub fn write_type_string( self, name: &str, formatter: &mut dyn Write, ) -> Result<(), Error>

Trait Implementations

impl Clone for Wrapping

fn clone(&self) -> Wrapping

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Wrapping

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

Formats the value using the given formatter.

impl Default for Wrapping

fn default() -> Wrapping

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for Wrapping

fn deserialize<__D>( __deserializer: __D, ) -> Result<Wrapping, <__D as Deserializer<'de>>::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl From<MutableWrapping> for Wrapping

fn from(wrapping: MutableWrapping) -> Wrapping

Converts to this type from the input type.

impl Ord for Wrapping

fn cmp(&self, other: &Wrapping) -> 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.

impl PartialEq for Wrapping

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

Tests for self and other values to be equal, and is used by ==.

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

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

impl PartialOrd for Wrapping

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

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 Copy for Wrapping

impl Eq for Wrapping

impl StructuralPartialEq for Wrapping