Files
pezkuwi-subxt/substrate/core/wasm-interface/src/wasmi_impl.rs
T
Bastian Köcher 1450719acc First step for generating host externals out of the function definition in sr-io (#3567)
* Adds new wrapper traits for wasm executor

* Add new crate `substrate-wasm-interface`

Thew new crate holds types and traits for the communicating between the
wasm runtime and the host.

* Rewrite externals with new macro etc

* Fix vec initialization

* Make executor tests working

* Remove unused code + warnings

* Introduce `Pointer` and `WordSize` for working with wasm

* Fix tests and compilation

* Fix compilation

* Apply suggestions from code review

Co-Authored-By: Sergei Pepyakin <sergei@parity.io>

* Review feedback

* Remove unused conversions

* Make each host function its own struct

`HostFunctions` now just returns these function structs. Each function
can be executed by using one of the function structs. The inherent host
functions are now moved to the "normal" host functions.

* Remove byteorder

* Add floating point types

* Make pointer interface more safe

* Add type alias for wasm-interface Result

* More review comments
2019-09-10 16:07:25 +02:00

80 lines
2.3 KiB
Rust

// Copyright 2019 Parity Technologies (UK) Ltd.
// This file is part of Substrate.
// Substrate is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// Substrate is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with Substrate. If not, see <http://www.gnu.org/licenses/>.
//! Implementation of conversions between Substrate and wasmi types.
use crate::{Value, ValueType, Signature};
impl From<Value> for wasmi::RuntimeValue {
fn from(value: Value) -> Self {
match value {
Value::I32(val) => Self::I32(val),
Value::I64(val) => Self::I64(val),
Value::F32(val) => Self::F32(val.into()),
Value::F64(val) => Self::F64(val.into()),
}
}
}
impl From<wasmi::RuntimeValue> for Value {
fn from(value: wasmi::RuntimeValue) -> Self {
match value {
wasmi::RuntimeValue::I32(val) => Self::I32(val),
wasmi::RuntimeValue::I64(val) => Self::I64(val),
wasmi::RuntimeValue::F32(val) => Self::F32(val.into()),
wasmi::RuntimeValue::F64(val) => Self::F64(val.into()),
}
}
}
impl From<ValueType> for wasmi::ValueType {
fn from(value: ValueType) -> Self {
match value {
ValueType::I32 => Self::I32,
ValueType::I64 => Self::I64,
ValueType::F32 => Self::F32,
ValueType::F64 => Self::F64,
}
}
}
impl From<wasmi::ValueType> for ValueType {
fn from(value: wasmi::ValueType) -> Self {
match value {
wasmi::ValueType::I32 => Self::I32,
wasmi::ValueType::I64 => Self::I64,
wasmi::ValueType::F32 => Self::F32,
wasmi::ValueType::F64 => Self::F64,
}
}
}
impl From<Signature> for wasmi::Signature {
fn from(sig: Signature) -> Self {
let args = sig.args.iter().map(|a| (*a).into()).collect::<Vec<_>>();
wasmi::Signature::new(args, sig.return_value.map(Into::into))
}
}
impl From<&wasmi::Signature> for Signature {
fn from(sig: &wasmi::Signature) -> Self {
Signature::new(
sig.params().into_iter().copied().map(Into::into).collect::<Vec<_>>(),
sig.return_type().map(Into::into),
)
}
}