Module runtime_call 

Wasm virtual machine, with automatic storage overlay.

The code in this module builds upon the functionalities of the host module and implements some of the host function calls. In other words, it is an easier-to-use version of the host module.

Most of the documentation of the host module also applies here.

In addition to the functionalities provided by the host module, the runtime_call module:

• Keeps track of the changes to the storage and off-chain storage made by the execution, and provides them at the end. Any storage access takes into account the intermediary list of changes.
• Automatically handles some externalities, such as calculating the Merkle root or storage transactions.

These additional features considerably reduces the number of externals concepts to plug to the virtual machine.

Re-exports

pub use host::Error as ErrorDetail;

pub use host::LogEmitInfo;

pub use host::LogEmitInfoHex;

pub use host::LogEmitInfoStr;

pub use host::StorageProofSizeBehavior;

pub use trie::Nibble;

pub use trie::TrieEntryVersion;

Structs

ClosestDescendantMerkleValue

Obtaining the Merkle value of the closest descendant of a trie node is required in order to continue.

Config

Configuration for run.

Error

Error that can happen during the execution.

LogEmit

Report about a log entry being emitted.

NextKey

Fetching the key that follows a given one is required in order to continue.

OffchainRandomSeed

Providing a random number is required in order to continue.

OffchainStorageCompareSet

Setting the value of an offchain storage value is required.

OffchainStorageGet

Loading an offchain storage value is required in order to continue.

OffchainStorageSet

Setting the value of an offchain storage value is required.

OffchainSubmitTransaction

The runtime requests submitting a transaction.

OffchainTimestamp

Providing the current UNIX timestamp is required in order to continue.

SignatureVerification

Verifying whether a signature is correct is required in order to continue.

StorageChanges

See Success::storage_changes.

StorageGet

Loading a storage value is required in order to continue.

Success

Execution is successful.

SuccessVirtualMachine

Function execution has succeeded. Contains the return value of the call.

Enums

OffchainContext

RuntimeCall

Current state of the execution.

TrieChange

TrieChangeStorageValue

Functions

run

Start running the WebAssembly virtual machine.