Merge #691

691: Basic cfg support, kind of, for Monotonics r=korken89 a=AfoHT

- Enable at least masking out a Monotonic
- Add example cfg-ing a Monotonic, showing limitations imposed by rtic-syntax
- Update changelog

The use case detailed in linked issue seems to be covered: Fixes #664 

Co-authored-by: Henrik Tjäder <henrik@tjaders.com>

1 files changed, 6 insertions, 1 deletions

diff --git a/macros/src/codegen.rs b/macros/src/codegen.rs
index 9c444fed..89173d45 100644
--- a/macros/src/codegen.rs
+++ b/macros/src/codegen.rs
@@ -108,6 +108,7 @@ pub fn app(app: &App, analysis: &Analysis, extra: &Extra) -> TokenStream2 {
         .map(|(_, monotonic)| {
             let name = &monotonic.ident;
             let name_str = &name.to_string();
+            let cfgs = &monotonic.cfgs;
             let ident = util::monotonic_ident(name_str);
             let doc = &format!(
                 "This module holds the static implementation for `{}::now()`",
@@ -115,7 +116,10 @@ pub fn app(app: &App, analysis: &Analysis, extra: &Extra) -> TokenStream2 {
             );
 
             let default_monotonic = if monotonic.args.default {
-                quote!(pub use #name::now;)
+                quote!(
+                #(#cfgs)*
+                pub use #name::now;
+                )
             } else {
                 quote!()
             };
@@ -125,6 +129,7 @@ pub fn app(app: &App, analysis: &Analysis, extra: &Extra) -> TokenStream2 {
 
                 #[doc = #doc]
                 #[allow(non_snake_case)]
+                #(#cfgs)*
                 pub mod #name {
 
                     /// Read the current time from this monotonic