mirror of
https://github.com/pezkuwichain/pezkuwi-subxt.git
synced 2026-06-14 08:41:07 +00:00
Bastian Köcher
4c36143375
* Add `get_global` for `Sandbox` This pr adds `get_global` to retrieve a `global` variable from an instantiated sandbox wasm blob. * Bump `spec_version` * Update primitives/wasm-interface/src/lib.rs Co-Authored-By: Sergei Pepyakin <sergei@parity.io> * `get_global` -> `get_global_val` Co-authored-by: Sergei Pepyakin <s.pepyakin@gmail.com> Co-authored-by: Gavin Wood <github@gavwood.com>
87 lines
2.4 KiB
Rust
87 lines
2.4 KiB
Rust
// Copyright 2018-2020 Parity Technologies (UK) Ltd.
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// This file is part of Substrate.
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// Substrate is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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// Substrate is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License
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// along with Substrate. If not, see <http://www.gnu.org/licenses/>.
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use super::Runtime;
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use crate::exec::Ext;
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use sp_sandbox::Value;
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use parity_wasm::elements::{FunctionType, ValueType};
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#[macro_use]
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pub(crate) mod macros;
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pub trait ConvertibleToWasm: Sized {
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const VALUE_TYPE: ValueType;
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type NativeType;
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fn to_typed_value(self) -> Value;
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fn from_typed_value(_: Value) -> Option<Self>;
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}
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impl ConvertibleToWasm for i32 {
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type NativeType = i32;
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const VALUE_TYPE: ValueType = ValueType::I32;
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fn to_typed_value(self) -> Value {
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Value::I32(self)
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}
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fn from_typed_value(v: Value) -> Option<Self> {
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v.as_i32()
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}
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}
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impl ConvertibleToWasm for u32 {
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type NativeType = u32;
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const VALUE_TYPE: ValueType = ValueType::I32;
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fn to_typed_value(self) -> Value {
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Value::I32(self as i32)
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}
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fn from_typed_value(v: Value) -> Option<Self> {
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match v {
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Value::I32(v) => Some(v as u32),
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_ => None,
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}
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}
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}
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impl ConvertibleToWasm for u64 {
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type NativeType = u64;
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const VALUE_TYPE: ValueType = ValueType::I64;
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fn to_typed_value(self) -> Value {
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Value::I64(self as i64)
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}
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fn from_typed_value(v: Value) -> Option<Self> {
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match v {
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Value::I64(v) => Some(v as u64),
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_ => None,
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}
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}
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}
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pub(crate) type HostFunc<E> =
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fn(
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&mut Runtime<E>,
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&[sp_sandbox::Value]
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) -> Result<sp_sandbox::ReturnValue, sp_sandbox::HostError>;
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pub(crate) trait FunctionImplProvider<E: Ext> {
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fn impls<F: FnMut(&[u8], HostFunc<E>)>(f: &mut F);
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}
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/// This trait can be used to check whether the host environment can satisfy
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/// a requested function import.
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pub trait ImportSatisfyCheck {
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/// Returns `true` if the host environment contains a function with
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/// the specified name and its type matches to the given type, or `false`
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/// otherwise.
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fn can_satisfy(name: &[u8], func_type: &FunctionType) -> bool;
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}
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