Enum cosmwasm_std::SystemResult

pub enum SystemResult<S> {
    Ok(S),
    Err(SystemError),
}

This is the outer result type returned by a querier to the contract.

We use a custom type here instead of Rust’s Result because we want to be able to define the serialization, which is a public interface. Every language that compiles to Wasm and runs in the ComsWasm VM needs to create the same JSON representation.

Examples

Success:

let data = Binary::from(b"hello, world");
let result = SystemResult::Ok(ContractResult::Ok(data));
assert_eq!(to_vec(&result).unwrap(), br#"{"ok":{"ok":"aGVsbG8sIHdvcmxk"}}"#);

Failure:

let error = SystemError::Unknown {};
let result: SystemResult<Binary> = SystemResult::Err(error);
assert_eq!(to_vec(&result).unwrap(), br#"{"error":{"unknown":{}}}"#);

Variants

Ok(S)

Err(SystemError)

Implementations

impl<S> SystemResult<S>

pub fn into_result(self) -> Result<S, SystemError>

Converts a ContractResult<S> to a Result<S, SystemError> as a convenient way to access the full Result API.

pub fn unwrap(self) -> S

impl<S: Debug> SystemResult<S>

pub fn unwrap_err(self) -> SystemError

Trait Implementations

impl<S: Clone> Clone for SystemResult<S>

fn clone(&self) -> SystemResult<S>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<S: Debug> Debug for SystemResult<S>

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

Formats the value using the given formatter.

impl<'de, S> Deserialize<'de> for SystemResult<S>where S: Deserialize<'de>,

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

Deserialize this value from the given Serde deserializer.

impl<S> From<Result<S, SystemError>> for SystemResult<S>

fn from(original: Result<S, SystemError>) -> SystemResult<S>

Converts to this type from the input type.

impl<S> From<SystemResult<S>> for Result<S, SystemError>

fn from(original: SystemResult<S>) -> Result<S, SystemError>

Converts to this type from the input type.

impl<S: JsonSchema> JsonSchema for SystemResult<S>

fn schema_name() -> String

The name of the generated JSON Schema.

fn json_schema(gen: &mut SchemaGenerator) -> Schema

Generates a JSON Schema for this type.

fn is_referenceable() -> bool

Whether JSON Schemas generated for this type should be re-used where possible using the $ref keyword.

impl<S: PartialEq> PartialEq<SystemResult<S>> for SystemResult<S>

fn eq(&self, other: &SystemResult<S>) -> 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<S> Serialize for SystemResult<S>where S: Serialize,

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

Serialize this value into the given Serde serializer.

impl<S: Eq> Eq for SystemResult<S>

impl<S> StructuralEq for SystemResult<S>

impl<S> StructuralPartialEq for SystemResult<S>