Struct ink_metadata::ReturnTypeSpec

pub struct ReturnTypeSpec<F: Form = MetaForm> { /* private fields */ }

Describes the contract message return type.

Implementations

impl ReturnTypeSpec

pub fn new<T>(ty: T) -> Self where
    T: Into<Option<TypeSpec>>, 

Creates a new return type specification from the given type or None.

Examples

ReturnTypeSpec::new(None); // no return type;
ReturnTypeSpec::new(TypeSpec::new::<i32>()); // return type of `i32`

impl<F> ReturnTypeSpec<F> where
    F: Form, 

pub fn opt_type(&self) -> Option<&TypeSpec<F>>

Returns the optional return type

Trait Implementations

impl<F: Debug + Form> Debug for ReturnTypeSpec<F>

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

Formats the value using the given formatter.

impl<'de, F: Form> Deserialize<'de> for ReturnTypeSpec<F> where
    F::Type: DeserializeOwned,
    F::String: DeserializeOwned, 

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

Deserialize this value from the given Serde deserializer.

impl IntoPortable for ReturnTypeSpec

type Output = ReturnTypeSpec<PortableForm>

The portable version of Self.

fn into_portable(self, registry: &mut Registry) -> Self::Output

Convert self to the portable form by using the registry for caching.

impl<F: PartialEq + Form> PartialEq<ReturnTypeSpec<F>> for ReturnTypeSpec<F>

fn eq(&self, other: &ReturnTypeSpec<F>) -> bool

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

fn ne(&self, other: &ReturnTypeSpec<F>) -> bool

This method tests for !=.

impl<F: Form> Serialize for ReturnTypeSpec<F> where
    F::Type: Serialize,
    F::String: Serialize, 

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error> where
    __S: Serializer, 

Serialize this value into the given Serde serializer.

impl<F: Eq + Form> Eq for ReturnTypeSpec<F>

impl<F: Form> StructuralEq for ReturnTypeSpec<F>

impl<F: Form> StructuralPartialEq for ReturnTypeSpec<F>