Add Custom RNG: getrandom-stdweb

Author: josephlr

Cargo.toml

@@ -17,6 +17,7 @@ appveyor = { repository = "rust-random/getrandom" }
 [workspace]
 members = [
     "custom/dummy",
+    "custom/stdweb",
 ]
 
 [dependencies]

custom/stdweb/Cargo.toml

@@ -0,0 +1,18 @@
+[package]
+name = "getrandom-stdweb"
+version = "0.1.0"
+edition = "2018"
+authors = ["The Rand Project Developers"]
+license = "MIT OR Apache-2.0"
+description = "Custom shim for using getrandom with stdweb"
+documentation = "https://docs.rs/getrandom-stdweb"
+repository = "https://github.com/rust-random/getrandom/tree/master/custom/stdweb"
+categories = ["wasm"]
+
+[lib]
+crate-type = ["dylib"]
+
+[dependencies]
+getrandom = { path = "../..", features = ["custom"] }
+stdweb = "0.4.18"
+log = "0.4"

src/wasm32_stdweb.rs renamed to custom/stdweb/src/lib.rs

@@ -6,25 +6,28 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-//! Implementation for WASM via stdweb
-extern crate std;
+//! `getrandom` implementation for WASM via stdweb
+#![cfg(all(target_arch = "wasm32", target_os = "unknown"))]
 
 use core::mem;
+use std::sync::Once;
 
+use log::error;
 use stdweb::js;
 use stdweb::unstable::TryInto;
 use stdweb::web::error::Error as WebError;
 
-use crate::Error;
-use std::sync::Once;
+use getrandom::{register_custom_getrandom, Error};
 
 #[derive(Clone, Copy, Debug)]
 enum RngSource {
     Browser,
     Node,
 }
 
-pub fn getrandom_inner(dest: &mut [u8]) -> Result<(), Error> {
+register_custom_getrandom!(getrandom_inner);
+
+fn getrandom_inner(dest: &mut [u8]) -> Result<(), Error> {
     assert_eq!(mem::size_of::<usize>(), 4);
     static ONCE: Once = Once::new();
     static mut RNG_SOURCE: Result<RngSource, Error> = Ok(RngSource::Node);