Enum ValueOrChunk

pub enum ValueOrChunk<V> {
    Value(V),
    ChunkWithProof(ChunkWithProof),
}

Represents a value or a chunk of data with attached proof.

Chunk with attached proof is used when the requested value is larger than ChunkWithProof::CHUNK_SIZE_BYTES.

Variants

Value(V)

Represents a value.

ChunkWithProof(ChunkWithProof)

Represents a chunk of data with attached proof.

Implementations

impl<V> ValueOrChunk<V>

pub fn new(data: V, chunk_index: u64) -> Result<Self, ChunkingError>

where V: Chunkable,

Creates an instance of ValueOrChunk::Value if data size is less than or equal to ChunkWithProof::CHUNK_SIZE_BYTES or a ValueOrChunk::ChunkWithProof if it is greater. In the latter case it will return only the chunk_index-th chunk of the value’s byte representation.

NOTE: The Chunkable instance used here needs to match the one used when calling Digest::hash_into_chunks_if_necessary. This is to ensure that type is turned into bytes consistently before chunking and hashing. If not then the Merkle proofs for chunks won’t match.

Trait Implementations

impl<V: Clone> Clone for ValueOrChunk<V>

fn clone(&self) -> ValueOrChunk<V>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<V> DataSize for ValueOrChunk<V>

where V: DataSize, ChunkWithProof: DataSize,

const IS_DYNAMIC: bool = true

If true, the type has a heap size that can vary at runtime, depending on the actual value.

const STATIC_HEAP_SIZE: usize = 0usize

The amount of space a value of the type always occupies. If IS_DYNAMIC is false, this is the total amount of heap memory occupied by the value. Otherwise this is a lower bound.

fn estimate_heap_size(&self) -> usize

Estimates the size of heap memory taken up by this value.

fn estimate_detailed_heap_size(&self) -> MemUsageNode

Create a tree of memory estimations.

impl<V: Debug> Debug for ValueOrChunk<V>

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

Formats the value using the given formatter.

impl<'de, V> Deserialize<'de> for ValueOrChunk<V>

where V: Deserialize<'de>,

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for ValueOrChunk<HashingTrieRaw>

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

Formats the value using the given formatter.

impl Display for ValueOrChunk<Vec<ExecutionResult>>

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

Formats the value using the given formatter.

impl<V: PartialEq> PartialEq for ValueOrChunk<V>

fn eq(&self, other: &ValueOrChunk<V>) -> 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<V> Serialize for ValueOrChunk<V>

where V: Serialize,

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl<V: Eq> Eq for ValueOrChunk<V>

impl<V> StructuralPartialEq for ValueOrChunk<V>