Struct apollo_compiler::database::hir::InlineFragment

pub struct InlineFragment { /* private fields */ }

Implementations

impl InlineFragment

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

Get a reference to inline fragment’s type condition.

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

Get the type this inline fragment is spread onto.

This method does not look up type conditions, so in the example below b.parent_type() returns the type for “Intf”, not “X”. To look up the type that an inline fragment applies to, use InlineFragment::type_def.

Examples

let mut compiler = ApolloCompiler::new();
compiler.add_type_system(r#"
    interface Intf {
        subField: Int!
    }
    type X implements Intf {
        subField: Int!
        subField2: Int!
    }
    type Query {
        field: Intf
    }
"#, "schema.graphql");
let id = compiler.add_executable(r#"
    query {
        ... on Query { field { subField } } # spread A
        field {
            ... on X { subField2 } # spread B
        }
    }
"#, "query.graphql");

let query = compiler.db.find_operation(id, None)?;
let a = &query.selection_set().inline_fragments()[0];
let b = &query.selection_set().field("field")?.selection_set().inline_fragments()[0];
assert_eq!(a.parent_type(&compiler.db)?.name(), "Query");
assert_eq!(b.parent_type(&compiler.db)?.name(), "Intf");

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

Get the type this inline fragment applies to: the type condition, or the parent type if a type condition is not given.

Examples

let mut compiler = ApolloCompiler::new();
compiler.add_type_system(r#"
    interface Intf {
        subField: Int!
    }
    type X implements Intf {
        subField: Int!
        subField2: Int!
    }
    type Query {
        field: Intf
    }
"#, "schema.graphql");
let id = compiler.add_executable(r#"
    query {
        ... on Query { field { subField } } # spread A
        field {
            ... on X { subField2 } # spread B
        }
    }
"#, "query.graphql");

let query = compiler.db.find_operation(id, None)?;
let a = &query.selection_set().inline_fragments()[0];
let b = &query.selection_set().field("field")?.selection_set().inline_fragments()[0];
assert_eq!(a.type_def(&compiler.db)?.name(), "Query");
assert_eq!(b.type_def(&compiler.db)?.name(), "X");

pub fn directives(&self) -> &[Directive]

Get a reference to inline fragment’s directives.

pub fn directive_by_name(&self, name: &str) -> Option<&Directive>

Returns the first directive with the given name.

For repeatable directives, see directives_by_name (plural).

pub fn directives_by_name<'def: 'name, 'name>( &'def self, name: &'name str ) -> impl Iterator<Item = &'def Directive> + 'name

Returns an iterator of directives with the given name.

For non-repeatable directives, directive_by_name (singular).

pub fn selection_set(&self) -> &SelectionSet

Get a reference inline fragment’s selection set.

pub fn self_used_variables(&self) -> impl Iterator<Item = Variable> + '_

Return an iterator over the variables used in directives on this spread.

Variables used inside the fragment are not included. For that, use variables().

pub fn variables(&self, db: &dyn HirDatabase) -> Vec<Variable>

Get variables in use in the inline fragment.

pub fn loc(&self) -> HirNodeLocation

Get the AST location information for this HIR node.

pub fn is_introspection(&self, db: &dyn HirDatabase) -> bool

Returns true if the inline fragment’s SelectionSet is an introspection.

Trait Implementations

impl Clone for InlineFragment

fn clone(&self) -> InlineFragment

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for InlineFragment

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

Formats the value using the given formatter.

impl Hash for InlineFragment

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<InlineFragment> for InlineFragment

fn eq(&self, other: &InlineFragment) -> 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 InlineFragment

impl StructuralEq for InlineFragment

impl StructuralPartialEq for InlineFragment