Enum apollo_compiler::database::hir::FragmentSelection

pub enum FragmentSelection {
    FragmentSpread(Arc<FragmentSpread>),
    InlineFragment(Arc<InlineFragment>),
}

Represent both kinds of fragment selections: named and inline fragments.

Variants

FragmentSpread(Arc<FragmentSpread>)

InlineFragment(Arc<InlineFragment>)

Implementations

impl FragmentSelection

pub fn type_condition(&self, db: &dyn HirDatabase) -> Option<String>

Get the name of this fragment’s type condition.

This returns None on the following invalid inputs:

• self is a named fragment spread, but the fragment it refers to is not defined
• self is an inline fragment without an explicit type condition, used in a selection set with a declared parent type that is not defined in the schema

pub fn selection_set(&self, db: &dyn HirDatabase) -> Option<SelectionSet>

Get this fragment’s selection set. This may be None if the fragment spread refers to an undefined fragment.

pub fn parent_type(&self, db: &dyn HirDatabase) -> Option<TypeDefinition>

Get the type that this fragment is being spread onto.

Returns None if the fragment is spread into a selection of an undefined field or type, like in:

type Query {
  field: Int
}
query {
  nonExistentField {
    ... spreadToUnknownType
  }
}

pub fn loc(&self) -> HirNodeLocation

Get the AST location information for this HIR node.

Trait Implementations

impl Clone for FragmentSelection

fn clone(&self) -> FragmentSelection

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for FragmentSelection

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

Formats the value using the given formatter.

impl Hash for FragmentSelection

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 PartialEq<FragmentSelection> for FragmentSelection

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

impl StructuralEq for FragmentSelection

impl StructuralPartialEq for FragmentSelection