feat(pathf): add build-time type path resolution system

Add `mingling_pathf` sub-crate and `pathf` feature for automatic
resolution of Mingling type module paths at build time. Scans source
files, identifies macro invocations via pattern matchers, and generates
mapping files consumed by `gen_program!()`.

1 files changed, 61 insertions, 0 deletions

diff --git a/mingling_pathf/test/src/test_files/test_chain.rs b/mingling_pathf/test/src/test_files/test_chain.rs
new file mode 100644
index 0000000..e209a5e
--- /dev/null
+++ b/mingling_pathf/test/src/test_files/test_chain.rs
@@ -0,0 +1,61 @@
+#[mingling::macros::chain]
+fn my_chain1(prev: Some1) -> Next {
+
+}
+
+#[mingling::macros::chain]
+pub fn my_chain2(prev: Some2) -> Next {
+
+}
+
+#[mingling::macros::chain]
+pub async fn my_chain3(prev: Some3) -> Next {
+
+}
+
+#[chain]
+fn my_chain4(prev: Some4) {
+
+}
+
+#[chain]
+pub fn my_chain5(prev: Some5) {
+
+}
+
+#[chain]
+pub async fn my_chain6(prev: Some6) {
+
+}
+
+pub mod sub {
+    #[mingling::macros::chain]
+    fn my_chain1(prev: Some1) -> Next {
+
+    }
+
+    #[mingling::macros::chain]
+    pub fn my_chain2(prev: Some2) -> Next {
+
+    }
+
+    #[mingling::macros::chain]
+    pub async fn my_chain3(prev: Some3) -> Next {
+
+    }
+
+    #[chain]
+    fn my_chain4(prev: Some4) {
+
+    }
+
+    #[chain]
+    pub fn my_chain5(prev: Some5) {
+
+    }
+
+    #[chain]
+    pub async fn my_chain6(prev: Some6) {
+
+    }
+}