pub struct HashPrecompile<H>(/* private fields */);Expand description
A hash assertion precompile parameterized by its HashFunction.
Implementations§
Source§impl<H: HashFunction> HashPrecompile<H>
impl<H: HashFunction> HashPrecompile<H>
Sourcepub const ASSERT_TAG_ID: u32 = ASSERT_DISC
pub const ASSERT_TAG_ID: u32 = ASSERT_DISC
Local discriminant of the assertion tag.
Sourcepub fn id() -> Felt
pub fn id() -> Felt
Derives this precompile’s id from its HashFunction::NAME.
Sourcepub fn assert_tag(n_bytes: u32) -> Tag
pub fn assert_tag(n_bytes: u32) -> Tag
Tag for a hash assertion node carrying the preimage byte length.
Sourcepub fn assert_node(
n_bytes: u32,
preimage_digest: Digest,
expected_digest: Digest,
) -> Node
pub fn assert_node( n_bytes: u32, preimage_digest: Digest, expected_digest: Digest, ) -> Node
Builds a hash assertion predicate over generic chunk-list children.
Sourcepub fn decode_assert_tag(tag: Tag) -> Result<Option<u32>, PrecompileError>
pub fn decode_assert_tag(tag: Tag) -> Result<Option<u32>, PrecompileError>
Decodes a hash assertion tag owned by this precompile.
Returns Ok(None) when tag belongs to another precompile. Tags with this precompile’s id
but invalid assertion arguments return PrecompileError::InvalidNode.
Sourcepub fn decode_assert_node(
node: &Node,
) -> Result<Option<HashAssertNode>, PrecompileError>
pub fn decode_assert_node( node: &Node, ) -> Result<Option<HashAssertNode>, PrecompileError>
Decodes a hash assertion node without evaluating its children.
Returns Ok(None) when node belongs to another precompile. Owned nodes return their
structural join child digests directly from the payload.
Trait Implementations§
Source§impl<H> Default for HashPrecompile<H>
impl<H> Default for HashPrecompile<H>
Source§impl<H: HashFunction> Precompile for HashPrecompile<H>
impl<H: HashFunction> Precompile for HashPrecompile<H>
Source§fn name(&self) -> &'static str
fn name(&self) -> &'static str
Stable name hashed into the precompile id; renaming changes every tag this precompile owns.
Source§fn decode(&self, args: [Felt; 3]) -> Option<NodeType>
fn decode(&self, args: [Felt; 3]) -> Option<NodeType>
Declares the body shape for recognized local tag arguments. Read more
Auto Trait Implementations§
impl<H> Freeze for HashPrecompile<H>where
PhantomData<H>: Freeze,
impl<H> RefUnwindSafe for HashPrecompile<H>where
PhantomData<H>: RefUnwindSafe,
impl<H> Send for HashPrecompile<H>where
PhantomData<H>: Send,
impl<H> Sync for HashPrecompile<H>where
PhantomData<H>: Sync,
impl<H> Unpin for HashPrecompile<H>where
PhantomData<H>: Unpin,
impl<H> UnsafeUnpin for HashPrecompile<H>where
PhantomData<H>: UnsafeUnpin,
impl<H> UnwindSafe for HashPrecompile<H>where
PhantomData<H>: UnwindSafe,
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Source§impl<T> BorrowMut<T> for Twhere
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Change the foreground color to black
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Change the foreground color to green
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Sets the background color to an RGB value.