Struct VMHostFunctions 

pub struct VMHostFunctions<'a> { /* private fields */ }

The self-referencing struct.

Implementations

impl VMHostFunctions<'_>

pub fn panic(&mut self, location_ptr: u64) -> VMLogicResult<()>

pub fn panic_utf8( &mut self, msg_ptr: u64, location_ptr: u64, ) -> VMLogicResult<()>

pub fn register_len(&self, register_id: u64) -> VMLogicResult<u64>

pub fn read_register( &self, register_id: u64, register_ptr: u64, ) -> VMLogicResult<u32>

pub fn context_id(&mut self, register_id: u64) -> VMLogicResult<()>

pub fn executor_id(&mut self, register_id: u64) -> VMLogicResult<()>

pub fn input(&mut self, register_id: u64) -> VMLogicResult<()>

pub fn value_return(&mut self, value_ptr: u64) -> VMLogicResult<()>

pub fn log_utf8(&mut self, log_ptr: u64) -> VMLogicResult<()>

pub fn emit(&mut self, event_ptr: u64) -> VMLogicResult<()>

pub fn commit( &mut self, root_hash_ptr: u64, artifact_ptr: u64, ) -> VMLogicResult<()>

pub fn storage_read( &mut self, key_ptr: u64, register_id: u64, ) -> VMLogicResult<u32>

pub fn storage_remove( &mut self, key_ptr: u64, register_id: u64, ) -> VMLogicResult<u32>

pub fn storage_write( &mut self, key_ptr: u64, value_ptr: u64, register_id: u64, ) -> VMLogicResult<u32>

pub fn fetch( &mut self, url_ptr: u64, method_ptr: u64, headers_ptr: u64, body_ptr: u64, register_id: u64, ) -> VMLogicResult<u32>

pub fn random_bytes(&mut self, ptr: u64) -> VMLogicResult<()>

pub fn time_now(&mut self, ptr: u64) -> VMLogicResult<()>

Gets the current time.

This function obtains the current time as a nanosecond timestamp, as SystemTime is not available inside the guest runtime. Therefore the guest needs to request this from the host.

pub fn send_proposal( &mut self, actions_ptr: u64, id_ptr: u64, ) -> VMLogicResult<()>

Call the contract’s send_proposal() function through the bridge.

The proposal actions are obtained as raw data and pushed onto a list of proposals to be sent to the host.

Note that multiple actions are received, and the entire batch is pushed onto the proposal list to represent one proposal.

Parameters

• actions_ptr - Pointer to the start of the action data in WASM memory.
• actions_len - Length of the action data.
• id_ptr - Pointer to the start of the id data in WASM memory.
• id_len - Length of the action data. This should be 32 bytes.

pub fn approve_proposal(&mut self, approval_ptr: u64) -> VMLogicResult<()>

pub fn blob_create(&mut self) -> VMLogicResult<u64>

Create a new blob for writing Returns: file descriptor (u64) for writing operations

pub fn blob_write(&mut self, fd: u64, data_ptr: u64) -> VMLogicResult<u64>

Write a chunk of data to a blob Returns: number of bytes written (u64)

pub fn blob_close(&mut self, fd: u64, blob_id_ptr: u64) -> VMLogicResult<u32>

Close a blob handle and get the resulting blob ID Returns: 1 on success

pub fn blob_announce_to_context( &mut self, blob_id_ptr: u64, context_id_ptr: u64, ) -> VMLogicResult<u32>

Announce a blob to a specific context for network discovery

pub fn blob_open(&mut self, blob_id_ptr: u64) -> VMLogicResult<u64>

Open a blob for reading Returns: file descriptor (u64) for reading operations

pub fn blob_read(&mut self, fd: u64, data_ptr: u64) -> VMLogicResult<u64>

Read a chunk of data from a blob Returns: number of bytes read (u64)

Trait Implementations

impl<'a> Drop for VMHostFunctions<'a>

fn drop(&mut self)

Executes the destructor for this type.