pub struct Address(/* private fields */);
Expand description

An Address is just a H256 with a different name. Has a different ABI name than H256.

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impl Address

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pub fn from_slice(slice: &[u8]) -> Self

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impl Address

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pub fn zero() -> Self

Returns a new address of 32 zeros. Allocates directly in heap. Minimal resulting wasm code (14 bytes if not inlined).

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pub fn len_bytes() -> usize

Returns the size of an address in bytes.

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pub fn as_bytes(&self) -> &[u8]

Extracts a byte slice containing the entire fixed hash.

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pub fn as_array(&self) -> &[u8; 32]

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pub fn copy_to_array(&self, target: &mut [u8; 32])

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pub fn to_vec(&self) -> Vec<u8>

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pub fn as_ptr(&self) -> *const u8

Pointer to the data on the heap.

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pub fn as_mut_ptr(&mut self) -> *mut u8

Returns an unsafe mutable pointer to the data on the heap. Used by the API to populate data.

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pub fn is_zero(&self) -> bool

True if all 32 bytes of the hash are zero.

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pub fn into_boxed_bytes(self) -> BoxedBytes

Transmutes self to an (in principle) variable length boxed bytes object. Both BoxedBytes and H256 keep the data on the heap, so only the pointer to that data needs to be transmuted. Does not reallocate or copy data, the data on the heap remains untouched.

Trait Implementations§

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impl AsMut<[u8]> for Address

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fn as_mut(&mut self) -> &mut [u8]

Converts this type into a mutable reference of the (usually inferred) input type.
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impl AsRef<[u8]> for Address

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fn as_ref(&self) -> &[u8]

Converts this type into a shared reference of the (usually inferred) input type.
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impl Clone for Address

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fn clone(&self) -> Address

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for Address

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

Formats the value using the given formatter. Read more
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impl<'a> From<&'a [u8; 32]> for Address

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fn from(bytes: &'a [u8; 32]) -> Self

Converts to this type from the input type.
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impl<'a> From<&'a Address> for &'a H256

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fn from(address: &'a Address) -> Self

Converts to this type from the input type.
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impl<'a> From<&'a mut [u8; 32]> for Address

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fn from(bytes: &'a mut [u8; 32]) -> Self

Converts to this type from the input type.
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impl From<[u8; 32]> for Address

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fn from(arr: [u8; 32]) -> Self

Converts to this type from the input type.
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impl From<Address> for [u8; 32]

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fn from(addr: Address) -> Self

Converts to this type from the input type.
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impl From<Address> for H256

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fn from(address: Address) -> Self

Converts to this type from the input type.
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impl From<Box<[u8; 32]>> for Address

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fn from(bytes: Box<[u8; 32]>) -> Self

Converts to this type from the input type.
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impl From<H256> for Address

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fn from(hash: H256) -> Self

Converts to this type from the input type.
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impl Hash for Address

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fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher. Read more
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fn hash_slice<H>(data: &[Self], state: &mut H)
where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
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impl<M> ManagedFrom<M, &Address> for ManagedAddress<M>
where M: ManagedTypeApi,

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fn managed_from(api: M, address: &Address) -> Self

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impl<M> ManagedFrom<M, Address> for ManagedAddress<M>
where M: ManagedTypeApi,

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fn managed_from(api: M, address: Address) -> Self

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impl NestedDecode for Address

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fn dep_decode<I: NestedDecodeInput>(input: &mut I) -> Result<Self, DecodeError>

Attempt to deserialise the value from input, using the format of an object nested inside another structure. In case of success returns the deserialized value and the number of bytes consumed during the operation.
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fn dep_decode_or_exit<I: NestedDecodeInput, ExitCtx: Clone>( input: &mut I, c: ExitCtx, exit: fn(_: ExitCtx, _: DecodeError) -> ! ) -> Self

Version of top_decode that exits quickly in case of error. Its purpose is to create smaller implementations in cases where the application is supposed to exit directly on decode error.
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impl NestedEncode for Address

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fn dep_encode<O: NestedEncodeOutput>( &self, dest: &mut O ) -> Result<(), EncodeError>

NestedEncode to output, using the format of an object nested inside another structure. Does not provide compact version.
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fn dep_encode_or_exit<O: NestedEncodeOutput, ExitCtx: Clone>( &self, dest: &mut O, c: ExitCtx, exit: fn(_: ExitCtx, _: EncodeError) -> ! )

Version of top_decode that exits quickly in case of error. Its purpose is to create smaller implementations in cases where the application is supposed to exit directly on decode error.
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impl PartialEq for Address

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fn eq(&self, other: &Address) -> bool

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

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fn top_decode<I: TopDecodeInput>(input: I) -> Result<Self, DecodeError>

Attempt to deserialize the value from input.
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fn top_decode_or_exit<I: TopDecodeInput, ExitCtx: Clone>( input: I, c: ExitCtx, exit: fn(_: ExitCtx, _: DecodeError) -> ! ) -> Self

Version of top_decode that exits quickly in case of error. Its purpose is to create smaller implementations in cases where the application is supposed to exit directly on decode error.
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impl TopEncode for Address

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fn top_encode<O: TopEncodeOutput>(&self, output: O) -> Result<(), EncodeError>

Attempt to serialize the value to ouput.
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fn top_encode_or_exit<O: TopEncodeOutput, ExitCtx: Clone>( &self, output: O, c: ExitCtx, exit: fn(_: ExitCtx, _: EncodeError) -> ! )

Version of top_decode that exits quickly in case of error. Its purpose is to create smaller bytecode implementations in cases where the application is supposed to exit directly on decode error.
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impl TypeAbi for Address

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fn type_name() -> String

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fn provide_type_descriptions<TDC: TypeDescriptionContainer>( accumulator: &mut TDC )

A type can provide more than its own description. For instance, a struct can also provide the descriptions of the type of its fields. TypeAbi doesn’t care for the exact accumulator type, which is abstracted by the TypeDescriptionContainer trait.
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impl Eq for Address

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impl StructuralEq for Address

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impl StructuralPartialEq for Address

Auto Trait Implementations§

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CallHasher for T
where T: Hash + ?Sized,

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default fn get_hash<H, B>(value: &H, build_hasher: &B) -> u64
where H: Hash + ?Sized, B: BuildHasher,

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impl<T> ContractCallArg for T
where T: TopEncode,

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fn push_dyn_arg<O>(&self, output: &mut O)
where O: DynArgOutput,

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impl<T> DynArg for T
where T: TopEncode + TopDecode,

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fn dyn_load<I>(loader: &mut I, arg_id: ArgId) -> T
where I: DynArgInput,

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impl<T> EndpointResult for T
where T: TopEncode,

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type DecodeAs = T

Indicates how the result of the endpoint can be interpreted when called via proxy. Self for most types.
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fn finish<FA>(&self, api: FA)
where FA: ManagedTypeApi + EndpointFinishApi + Clone + 'static,

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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<M, F> ManagedFrom<M, F> for F
where M: ManagedTypeApi,

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fn managed_from(_: M, t: F) -> F

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impl<M, F, T> ManagedInto<M, T> for F
where T: ManagedFrom<M, F>, M: ManagedTypeApi,

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fn managed_into(self, api: M) -> T

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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.