Struct TypeAttributeCoordinate

pub struct TypeAttributeCoordinate {
    pub ty: NamedType,
    pub attribute: Name,
}

A schema coordinate targeting a field definition or an enum value: Type.field, Enum.VALUE.

Type attribute coordinate syntax can refer to object or interface field definitions, input field definitions, and enum values. TypeAttributeCoordinate::lookup returns an enum to account for those possibilities. To look up a specific kind of type attribute, there are convenience methods:

• TypeAttributeCoordinate::lookup_field for object or interface fields
• TypeAttributeCoordinate::lookup_input_field for input fields
• TypeAttributeCoordinate::lookup_enum_value for enum values

Example

use apollo_compiler::name;
use apollo_compiler::coordinate::TypeAttributeCoordinate;

assert_eq!(TypeAttributeCoordinate {
    ty: name!("Type"),
    attribute: name!("field"),
}.to_string(), "Type.field");

Fields

ty: NamedType

attribute: Name

Implementations

impl TypeAttributeCoordinate

pub fn type_coordinate(&self) -> TypeCoordinate

Create a schema coordinate that points to the type this attribute is part of.

pub fn with_argument(&self, argument: Name) -> FieldArgumentCoordinate

Assume this attribute is a field, and create a schema coordinate that points to an argument on this field.

pub fn lookup<'coord, 'schema>( &'coord self, schema: &'schema Schema, ) -> Result<TypeAttributeLookup<'schema>, SchemaLookupError<'coord, 'schema>>

Look up this type attribute in a schema.

pub fn lookup_field<'coord, 'schema>( &'coord self, schema: &'schema Schema, ) -> Result<&'schema Component<FieldDefinition>, SchemaLookupError<'coord, 'schema>>

Look up this field definition in a schema. If the attribute does not refer to an object or interface field, returns SchemaLookupError::InvalidType.

pub fn lookup_input_field<'coord, 'schema>( &'coord self, schema: &'schema Schema, ) -> Result<&'schema Component<InputValueDefinition>, SchemaLookupError<'coord, 'schema>>

Look up this input field definition in a schema. If the attribute does not refer to an input field, returns SchemaLookupError::InvalidType.

pub fn lookup_enum_value<'coord, 'schema>( &'coord self, schema: &'schema Schema, ) -> Result<&'schema Component<EnumValueDefinition>, SchemaLookupError<'coord, 'schema>>

Look up this enum value definition in a schema. If the attribute does not refer to an enum, returns SchemaLookupError::InvalidType.

Trait Implementations

impl Clone for TypeAttributeCoordinate

fn clone(&self) -> TypeAttributeCoordinate

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TypeAttributeCoordinate

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

Formats the value using the given formatter.

impl Display for TypeAttributeCoordinate

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

Formats the value using the given formatter.

impl From<TypeAttributeCoordinate> for SchemaCoordinate

fn from(inner: TypeAttributeCoordinate) -> Self

Converts to this type from the input type.

impl FromStr for TypeAttributeCoordinate

type Err = SchemaCoordinateParseError

The associated error which can be returned from parsing.

fn from_str(input: &str) -> Result<Self, Self::Err>

Parses a string s to return a value of this type.

impl Hash for TypeAttributeCoordinate

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 for TypeAttributeCoordinate

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

impl StructuralPartialEq for TypeAttributeCoordinate