Enum juniper::Type[−][src]

pub enum Type<'a> {
    Named(Cow<'a, str>),
    List(Box<Type<'a>>),
    NonNullNamed(Cow<'a, str>),
    NonNullList(Box<Type<'a>>),
}
Expand description

A type literal in the syntax tree

This enum carries no semantic information and might refer to types that do not exist.

Variants

Named(Cow<'a, str>)
Expand description

A nullable named type, e.g. String

List(Box<Type<'a>>)
Expand description

A nullable list type, e.g. [String]

The list itself is what’s nullable, the containing type might be non-null.

NonNullNamed(Cow<'a, str>)
Expand description

A non-null named type, e.g. String!

NonNullList(Box<Type<'a>>)
Expand description

A non-null list type, e.g. [String]!.

The list itself is what’s non-null, the containing type might be null.

Implementations

impl<'a> Type<'a>[src]

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

Get the name of a named type.

Only applies to named types; lists will return None.

pub fn innermost_name(&self) -> &str[src]

Get the innermost name by unpacking lists

All type literals contain exactly one named type.

pub fn is_non_null(&self) -> bool[src]

Determines if a type only can represent non-null values.

Trait Implementations

impl<'a> Clone for Type<'a>[src]

fn clone(&self) -> Type<'a>[src]

Returns a copy of the value. Read more

fn clone_from(&mut self, source: &Self)1.0.0[src]

Performs copy-assignment from source. Read more

impl<'a> Debug for Type<'a>[src]

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

Formats the value using the given formatter. Read more

impl<'a> Display for Type<'a>[src]

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

Formats the value using the given formatter. Read more

impl<'a> PartialEq<Type<'a>> for Type<'a>[src]

fn eq(&self, other: &Type<'a>) -> bool[src]

This method tests for self and other values to be equal, and is used by ==. Read more

fn ne(&self, other: &Type<'a>) -> bool[src]

This method tests for !=.

impl<'a> Eq for Type<'a>[src]

impl<'a> StructuralEq for Type<'a>[src]

impl<'a> StructuralPartialEq for Type<'a>[src]

Auto Trait Implementations

impl<'a> RefUnwindSafe for Type<'a>

impl<'a> Send for Type<'a>

impl<'a> Sync for Type<'a>

impl<'a> Unpin for Type<'a>

impl<'a> UnwindSafe for Type<'a>

Blanket Implementations

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

pub fn type_id(&self) -> TypeId[src]

Gets the TypeId of self. Read more

impl<T> Borrow<T> for T where
    T: ?Sized, [src]

pub fn borrow(&self) -> &T[src]

Immutably borrows from an owned value. Read more

impl<T> BorrowMut<T> for T where
    T: ?Sized, [src]

pub fn borrow_mut(&mut self) -> &mut T[src]

Mutably borrows from an owned value. Read more

impl<Q, K> Equivalent<K> for Q where
    K: Borrow<Q> + ?Sized,
    Q: Eq + ?Sized, [src]

pub fn equivalent(&self, key: &K) -> bool[src]

Compare self to key and return true if they are equal.

impl<T> From<T> for T[src]

pub fn from(t: T) -> T[src]

Performs the conversion.

impl<T, U> Into<U> for T where
    U: From<T>, [src]

pub fn into(self) -> U[src]

Performs the conversion.

impl<T> ToOwned for T where
    T: Clone, [src]

type Owned = T

The resulting type after obtaining ownership.

pub fn to_owned(&self) -> T[src]

Creates owned data from borrowed data, usually by cloning. Read more

pub fn clone_into(&self, target: &mut T)[src]

🔬 This is a nightly-only experimental API. (toowned_clone_into)

recently added

Uses borrowed data to replace owned data, usually by cloning. Read more

impl<T> ToString for T where
    T: Display + ?Sized, [src]

pub default fn to_string(&self) -> String[src]

Converts the given value to a String. Read more

impl<T, U> TryFrom<U> for T where
    U: Into<T>, [src]

type Error = Infallible

The type returned in the event of a conversion error.

pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>[src]

Performs the conversion.

impl<T, U> TryInto<U> for T where
    U: TryFrom<T>, [src]

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

The type returned in the event of a conversion error.

pub fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>[src]

Performs the conversion.

impl<V, T> VZip<V> for T where
    V: MultiLane<T>, 

pub fn vzip(self) -> V