Defines primitive types for creating or validating a parachain.
When compiled with standard library support, this crate exports a wasm
module that can be used to validate parachain WASM.
Parachain WASM
Polkadot parachain WASM is in the form of a module which imports a memory
instance and exports a function validate_block.
validate accepts as input two i32 values, representing a pointer/length pair
respectively, that encodes ValidationParams.
validate returns an u64 which is a pointer to an u8 array and its length.
The data in the array is expected to be a SCALE encoded
ValidationResult.
ASCII-diagram demonstrating the return data format:
[pointer][length]
32bit 32bit
^~~ returned pointer & length
The wasm-api (enabled only when std feature is not enabled and wasm-api feature is enabled)
provides utilities for setting up a parachain WASM module in Rust.