Add more helpful Rust Configuration methods
Also switch where they're attached so they can be used with both
versions of Configuration we have in Rust.
Signed-off-by: Brian Silverman <bsilver16384@gmail.com>
Change-Id: I944cd0fc05db460573e9df694e812bdf0f31ffd7
diff --git a/aos/flatbuffers.rs b/aos/flatbuffers.rs
index 073d206..aec61d8 100644
--- a/aos/flatbuffers.rs
+++ b/aos/flatbuffers.rs
@@ -341,6 +341,21 @@
/// storing references to the flatbuffer anywhere it's a strict increase in flexibility.
pub type DynFlatbuffer<'buf, T> = Box<dyn Flatbuffer<T> + 'buf>;
+/// Transmutes the in-memory flatbuffer data to a type. This is only useful if `T` is a C++-style
+/// flatbuffer generated class, it doesn't match the layout of any type in any language.
+///
+/// It is strongly recommended to explicitly specify `T` using the turbofish operator when using
+/// this function. Mismatches of the type are very bad and leaving it implicit is error prone.
+///
+/// # Safety
+///
+/// This is extremely unsafe. `T` has to be something expecting a flatbuffer table of the correct
+/// type as its address.
+pub unsafe fn transmute_table_to<'a, T>(table: &flatbuffers::Table<'a>) -> &'a T {
+ let address = &table.buf[table.loc];
+ std::mem::transmute(address)
+}
+
#[cfg(test)]
mod tests {
use super::*;