Implement the runtime part of the sandbox.

build.sh

@@ -1,6 +1,7 @@
 #!/bin/sh
 
 # NOTE `cargo install wasm-gc` before running this script.
+# NOTE `cargo install --git https://github.com/pepyakin/wasm-export-table.git`
 
 set -e
 export CARGO_INCREMENTAL=0

demo/runtime/wasm/init.sh

@@ -4,3 +4,4 @@ rustup update nightly
 rustup target add wasm32-unknown-unknown --toolchain nightly
 rustup update stable
 cargo install --git https://github.com/alexcrichton/wasm-gc
+cargo install --git https://github.com/pepyakin/wasm-export-table.git

polkadot/runtime/wasm/init.sh

@@ -4,3 +4,4 @@ rustup update nightly
 rustup target add wasm32-unknown-unknown --toolchain nightly
 rustup update stable
 cargo install --git https://github.com/alexcrichton/wasm-gc
+cargo install --git https://github.com/pepyakin/wasm-export-table.git

substrate/executor/Cargo.toml

@@ -22,3 +22,4 @@ log = "0.3"
 
 [dev-dependencies]
 assert_matches = "1.1"
+wabt = "0.1.7"

substrate/executor/src/lib.rs

@@ -47,12 +47,15 @@ extern crate error_chain;
 #[cfg(test)]
 extern crate assert_matches;
 
+#[cfg(test)]
+extern crate wabt;
 
 #[macro_use]
 mod wasm_utils;
 mod wasm_executor;
 #[macro_use]
 mod native_executor;
+mod sandbox;
 
 pub mod error;
 pub use wasm_executor::WasmExecutor;