1 files changed, 86 insertions, 0 deletions
diff --git a/macros/src/syntax/parse/software_task.rs b/macros/src/syntax/parse/software_task.rs
new file mode 100644
index 00000000..2b1ac4a5
--- /dev/null
+++ b/macros/src/syntax/parse/software_task.rs
@@ -0,0 +1,86 @@
+use syn::{parse, ForeignItemFn, ItemFn, Stmt};
+
+use crate::syntax::parse::util::FilterAttrs;
+use crate::syntax::{
+    ast::{SoftwareTask, SoftwareTaskArgs},
+    parse::util,
+};
+
+impl SoftwareTask {
+    pub(crate) fn parse(args: SoftwareTaskArgs, item: ItemFn) -> parse::Result<Self> {
+        let valid_signature =
+            util::check_fn_signature(&item, true) && util::type_is_unit(&item.sig.output);
+
+        let span = item.sig.ident.span();
+
+        let name = item.sig.ident.to_string();
+
+        let is_async = item.sig.asyncness.is_some();
+
+        if valid_signature {
+            if let Some((context, Ok(inputs))) = util::parse_inputs(item.sig.inputs, &name) {
+                let FilterAttrs { cfgs, attrs, .. } = util::filter_attributes(item.attrs);
+
+                return Ok(SoftwareTask {
+                    args,
+                    attrs,
+                    cfgs,
+                    context,
+                    inputs,
+                    stmts: item.block.stmts,
+                    is_extern: false,
+                    is_async,
+                });
+            }
+        }
+
+        Err(parse::Error::new(
+            span,
+            &format!(
+                "this task handler must have type signature `(async) fn({}::Context, ..)`",
+                name
+            ),
+        ))
+    }
+}
+
+impl SoftwareTask {
+    pub(crate) fn parse_foreign(
+        args: SoftwareTaskArgs,
+        item: ForeignItemFn,
+    ) -> parse::Result<Self> {
+        let valid_signature =
+            util::check_foreign_fn_signature(&item, true) && util::type_is_unit(&item.sig.output);
+
+        let span = item.sig.ident.span();
+
+        let name = item.sig.ident.to_string();
+
+        let is_async = item.sig.asyncness.is_some();
+
+        if valid_signature {
+            if let Some((context, Ok(inputs))) = util::parse_inputs(item.sig.inputs, &name) {
+                let FilterAttrs { cfgs, attrs, .. } = util::filter_attributes(item.attrs);
+
+                return Ok(SoftwareTask {
+                    args,
+                    attrs,
+                    cfgs,
+                    context,
+                    inputs,
+                    stmts: Vec::<Stmt>::new(),
+                    is_extern: true,
+                    is_async,
+                });
+            }
+        }
+
+        Err(parse::Error::new(
+            span,
+            &format!(
+                "this task handler must have type signature `(async) fn({}::Context, ..)`",
+                name
+            ),
+        ))
+    }
+}