1 files changed, 46 insertions, 0 deletions
diff --git a/library/std/src/sys/wasm/args.rs b/library/std/src/sys/wasm/args.rs
new file mode 100644
index 00000000000..3b6557ae325
--- /dev/null
+++ b/library/std/src/sys/wasm/args.rs
@@ -0,0 +1,46 @@
+use crate::ffi::OsString;
+use crate::marker::PhantomData;
+use crate::vec;
+
+pub unsafe fn init(_argc: isize, _argv: *const *const u8) {
+    // On wasm these should always be null, so there's nothing for us to do here
+}
+
+pub unsafe fn cleanup() {}
+
+pub fn args() -> Args {
+    Args { iter: Vec::new().into_iter(), _dont_send_or_sync_me: PhantomData }
+}
+
+pub struct Args {
+    iter: vec::IntoIter<OsString>,
+    _dont_send_or_sync_me: PhantomData<*mut ()>,
+}
+
+impl Args {
+    pub fn inner_debug(&self) -> &[OsString] {
+        self.iter.as_slice()
+    }
+}
+
+impl Iterator for Args {
+    type Item = OsString;
+    fn next(&mut self) -> Option<OsString> {
+        self.iter.next()
+    }
+    fn size_hint(&self) -> (usize, Option<usize>) {
+        self.iter.size_hint()
+    }
+}
+
+impl ExactSizeIterator for Args {
+    fn len(&self) -> usize {
+        self.iter.len()
+    }
+}
+
+impl DoubleEndedIterator for Args {
+    fn next_back(&mut self) -> Option<OsString> {
+        self.iter.next_back()
+    }
+}