Move rtic macros to repo root, tune xtask

rtic-macros/src/codegen.rs

@@ -0,0 +1,75 @@
+use proc_macro2::TokenStream as TokenStream2;
+use quote::quote;
+
+use crate::analyze::Analysis;
+use crate::syntax::ast::App;
+
+mod assertions;
+mod async_dispatchers;
+mod hardware_tasks;
+mod idle;
+mod init;
+mod local_resources;
+mod local_resources_struct;
+mod module;
+mod post_init;
+mod pre_init;
+mod shared_resources;
+mod shared_resources_struct;
+mod software_tasks;
+mod util;
+
+mod main;
+
+// TODO: organize codegen to actual parts of code
+// so `main::codegen` generates ALL the code for `fn main`,
+// `software_tasks::codegen` generates ALL the code for software tasks etc...
+
+#[allow(clippy::too_many_lines)]
+pub fn app(app: &App, analysis: &Analysis) -> TokenStream2 {
+    // Generate the `main` function
+    let main = main::codegen(app, analysis);
+    let init_codegen = init::codegen(app, analysis);
+    let idle_codegen = idle::codegen(app, analysis);
+    let shared_resources_codegen = shared_resources::codegen(app, analysis);
+    let local_resources_codegen = local_resources::codegen(app, analysis);
+    let hardware_tasks_codegen = hardware_tasks::codegen(app, analysis);
+    let software_tasks_codegen = software_tasks::codegen(app, analysis);
+    let async_dispatchers_codegen = async_dispatchers::codegen(app, analysis);
+
+    let user_imports = &app.user_imports;
+    let user_code = &app.user_code;
+    let name = &app.name;
+    let device = &app.args.device;
+
+    let rt_err = util::rt_err_ident();
+
+    quote!(
+        /// The RTIC application module
+        pub mod #name {
+            /// Always include the device crate which contains the vector table
+            use #device as #rt_err;
+
+            #(#user_imports)*
+
+            #(#user_code)*
+            /// User code end
+
+            #init_codegen
+
+            #idle_codegen
+
+            #hardware_tasks_codegen
+
+            #software_tasks_codegen
+
+            #shared_resources_codegen
+
+            #local_resources_codegen
+
+            #async_dispatchers_codegen
+
+            #main
+        }
+    )
+}