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Add get_global for Sandbox (#4756)

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* 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>
This commit is contained in:
Bastian Köcher
2020-01-29 16:24:40 +01:00
committed by GitHub
parent ae1e9002d7
commit 4c36143375
23 changed files with 275 additions and 195 deletions
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substrate/primitives/sandbox/src/lib.rs
+11 -3
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@@ -40,7 +40,8 @@
use sp_std::prelude::*;
pub use sp_core::sandbox::{TypedValue, ReturnValue, HostError};
pub use sp_core::sandbox::HostError;
pub use sp_wasm_interface::{Value, ReturnValue};
mod imp {
#[cfg(feature = "std")]
@@ -75,7 +76,7 @@ impl From<Error> for HostError {
/// supervisor in [`EnvironmentDefinitionBuilder`].
///
/// [`EnvironmentDefinitionBuilder`]: struct.EnvironmentDefinitionBuilder.html
pub type HostFuncType<T> = fn(&mut T, &[TypedValue]) -> Result<ReturnValue, HostError>;
pub type HostFuncType<T> = fn(&mut T, &[Value]) -> Result<ReturnValue, HostError>;
/// Reference to a sandboxed linear memory, that
/// will be used by the guest module.
@@ -197,9 +198,16 @@ impl<T> Instance<T> {
pub fn invoke(
&mut self,
name: &str,
args: &[TypedValue],
args: &[Value],
state: &mut T,
) -> Result<ReturnValue, Error> {
self.inner.invoke(name, args, state)
}
/// Get the value from a global with the given `name`.
///
/// Returns `Some(_)` if the global could be found.
pub fn get_global_val(&self, name: &str) -> Option<Value> {
self.inner.get_global_val(name)
}
}