From d0b6ed4441469acfb6bc6555d78abf12637b6cf4 Mon Sep 17 00:00:00 2001
From: Edwin Cheng <edwin0cheng@gmail.com>
Date: Wed, 18 Mar 2020 20:56:46 +0800
Subject: Add ProcMacroClient

---
 crates/ra_hir_expand/src/proc_macro.rs | 30 ++++++++++++++----------------
 1 file changed, 14 insertions(+), 16 deletions(-)

(limited to 'crates/ra_hir_expand')

diff --git a/crates/ra_hir_expand/src/proc_macro.rs b/crates/ra_hir_expand/src/proc_macro.rs
index a8dee2052..296325b05 100644
--- a/crates/ra_hir_expand/src/proc_macro.rs
+++ b/crates/ra_hir_expand/src/proc_macro.rs
@@ -1,33 +1,31 @@
 //! Proc Macro Expander stub
 
-use crate::{db::AstDatabase, LazyMacroId, MacroCallKind, MacroCallLoc};
-use ra_db::CrateId;
+use crate::{db::AstDatabase, LazyMacroId};
+use ra_db::{CrateId, ProcMacroId};
 
 #[derive(Debug, Clone, Copy, Eq, PartialEq, Hash)]
 pub struct ProcMacroExpander {
     krate: CrateId,
+    proc_macro_id: ProcMacroId,
 }
 
 impl ProcMacroExpander {
-    pub fn new(krate: CrateId) -> ProcMacroExpander {
-        ProcMacroExpander { krate }
+    pub fn new(krate: CrateId, proc_macro_id: ProcMacroId) -> ProcMacroExpander {
+        ProcMacroExpander { krate, proc_macro_id }
     }
 
     pub fn expand(
         &self,
         db: &dyn AstDatabase,
-        id: LazyMacroId,
-        _tt: &tt::Subtree,
+        _id: LazyMacroId,
+        tt: &tt::Subtree,
     ) -> Result<tt::Subtree, mbe::ExpandError> {
-        let loc: MacroCallLoc = db.lookup_intern_macro(id);
-        let name = match loc.kind {
-            MacroCallKind::FnLike(_) => return Err(mbe::ExpandError::ConversionError),
-            MacroCallKind::Attr(_, name) => name,
-        };
-
-        log::debug!("Proc-macro-expanding name = {}", name);
-
-        // Return nothing for now
-        return Ok(tt::Subtree::default());
+        let krate_graph = db.crate_graph();
+        let proc_macro = krate_graph[self.krate]
+            .proc_macro
+            .get(self.proc_macro_id.0)
+            .clone()
+            .ok_or_else(|| mbe::ExpandError::ConversionError)?;
+        proc_macro.custom_derive(tt)
     }
 }
-- 
cgit v1.2.3


From db162df264a222021dbc7f1f93af94029f3948d9 Mon Sep 17 00:00:00 2001
From: Edwin Cheng <edwin0cheng@gmail.com>
Date: Fri, 27 Mar 2020 00:41:44 +0800
Subject: Remove deps on tt_mbe

---
 crates/ra_hir_expand/src/proc_macro.rs | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

(limited to 'crates/ra_hir_expand')

diff --git a/crates/ra_hir_expand/src/proc_macro.rs b/crates/ra_hir_expand/src/proc_macro.rs
index 296325b05..4d270e0de 100644
--- a/crates/ra_hir_expand/src/proc_macro.rs
+++ b/crates/ra_hir_expand/src/proc_macro.rs
@@ -23,9 +23,10 @@ impl ProcMacroExpander {
         let krate_graph = db.crate_graph();
         let proc_macro = krate_graph[self.krate]
             .proc_macro
-            .get(self.proc_macro_id.0)
+            .get(self.proc_macro_id.0 as usize)
             .clone()
             .ok_or_else(|| mbe::ExpandError::ConversionError)?;
-        proc_macro.custom_derive(tt)
+
+        proc_macro.expander.expand(&tt, None).map_err(mbe::ExpandError::from)
     }
 }
-- 
cgit v1.2.3