Merge #7000

7000: Store invocation site for eager macros r=edwin0cheng a=jonas-schievink

Fixes https://github.com/rust-analyzer/rust-analyzer/issues/6992

r? @edwin0cheng 

I'm not sure if this is totally correct, it looks like we create **two** `EagerCallLoc`s per macro invocation, one for the arguments (?), and one for the actual macro call. I gave both the same `AstId`, hopefully that's correct.

Co-authored-by: Jonas Schievink <[email protected]>

4 files changed, 27 insertions, 28 deletions

diff --git a/crates/hir_expand/src/builtin_macro.rs b/crates/hir_expand/src/builtin_macro.rs
index dddbbcdac..6382521fb 100644
--- a/crates/hir_expand/src/builtin_macro.rs
+++ b/crates/hir_expand/src/builtin_macro.rs
@@ -563,6 +563,7 @@ mod tests {
 
                 let args = macro_call.token_tree().unwrap();
                 let parsed_args = mbe::ast_to_token_tree(&args).unwrap().0;
+                let call_id = AstId::new(file_id.into(), ast_id_map.ast_id(&macro_call));
 
                 let arg_id = db.intern_eager_expansion({
                     EagerCallLoc {
@@ -570,7 +571,7 @@ mod tests {
                         fragment: FragmentKind::Expr,
                         subtree: Arc::new(parsed_args.clone()),
                         krate,
-                        file_id: file_id.into(),
+                        call: call_id,
                     }
                 });
 
@@ -580,7 +581,7 @@ mod tests {
                     fragment,
                     subtree: Arc::new(subtree),
                     krate,
-                    file_id: file_id.into(),
+                    call: call_id,
                 };
 
                 let id: MacroCallId = db.intern_eager_expansion(eager).into();
diff --git a/crates/hir_expand/src/db.rs b/crates/hir_expand/src/db.rs
index 4477d867f..077de3727 100644
--- a/crates/hir_expand/src/db.rs
+++ b/crates/hir_expand/src/db.rs
@@ -5,7 +5,7 @@ use std::sync::Arc;
 use base_db::{salsa, SourceDatabase};
 use mbe::{ExpandError, ExpandResult, MacroRules};
 use parser::FragmentKind;
-use syntax::{algo::diff, AstNode, GreenNode, Parse, SyntaxKind::*, SyntaxNode};
+use syntax::{algo::diff, ast::NameOwner, AstNode, GreenNode, Parse, SyntaxKind::*, SyntaxNode};
 
 use crate::{
     ast_id_map::AstIdMap, BuiltinDeriveExpander, BuiltinFnLikeExpander, EagerCallLoc, EagerMacroId,
@@ -129,11 +129,11 @@ fn ast_id_map(db: &dyn AstDatabase, file_id: HirFileId) -> Arc<AstIdMap> {
 fn macro_def(db: &dyn AstDatabase, id: MacroDefId) -> Option<Arc<(TokenExpander, mbe::TokenMap)>> {
     match id.kind {
         MacroDefKind::Declarative => {
-            let macro_call = match id.ast_id?.to_node(db) {
+            let macro_rules = match id.ast_id?.to_node(db) {
                 syntax::ast::Macro::MacroRules(mac) => mac,
                 syntax::ast::Macro::MacroDef(_) => return None,
             };
-            let arg = macro_call.token_tree()?;
+            let arg = macro_rules.token_tree()?;
             let (tt, tmap) = mbe::ast_to_token_tree(&arg).or_else(|| {
                 log::warn!("fail on macro_def to token tree: {:#?}", arg);
                 None
@@ -141,7 +141,8 @@ fn macro_def(db: &dyn AstDatabase, id: MacroDefId) -> Option<Arc<(TokenExpander,
             let rules = match MacroRules::parse(&tt) {
                 Ok(it) => it,
                 Err(err) => {
-                    log::warn!("fail on macro_def parse: error: {:#?} {:#?}", err, tt);
+                    let name = macro_rules.name().map(|n| n.to_string()).unwrap_or_default();
+                    log::warn!("fail on macro_def parse ({}): {:?} {:#?}", name, err, tt);
                     return None;
                 }
             };
diff --git a/crates/hir_expand/src/eager.rs b/crates/hir_expand/src/eager.rs
index 0229a836e..6354b090d 100644
--- a/crates/hir_expand/src/eager.rs
+++ b/crates/hir_expand/src/eager.rs
@@ -110,6 +110,9 @@ pub fn expand_eager_macro(
         || err("malformed macro invocation"),
     )?;
 
+    let ast_map = db.ast_id_map(macro_call.file_id);
+    let call_id = InFile::new(macro_call.file_id, ast_map.ast_id(&macro_call.value));
+
     // Note:
     // When `lazy_expand` is called, its *parent* file must be already exists.
     // Here we store an eager macro id for the argument expanded subtree here
@@ -120,7 +123,7 @@ pub fn expand_eager_macro(
             fragment: FragmentKind::Expr,
             subtree: Arc::new(parsed_args.clone()),
             krate,
-            file_id: macro_call.file_id,
+            call: call_id,
         }
     });
     let arg_file_id: MacroCallId = arg_id.into();
@@ -141,13 +144,8 @@ pub fn expand_eager_macro(
         let res = eager.expand(db, arg_id, &subtree);
 
         let (subtree, fragment) = diagnostic_sink.expand_result_option(res)?;
-        let eager = EagerCallLoc {
-            def,
-            fragment,
-            subtree: Arc::new(subtree),
-            krate,
-            file_id: macro_call.file_id,
-        };
+        let eager =
+            EagerCallLoc { def, fragment, subtree: Arc::new(subtree), krate, call: call_id };
 
         Ok(db.intern_eager_expansion(eager))
     } else {
diff --git a/crates/hir_expand/src/lib.rs b/crates/hir_expand/src/lib.rs
index d486186e5..3fa1b1d77 100644
--- a/crates/hir_expand/src/lib.rs
+++ b/crates/hir_expand/src/lib.rs
@@ -83,7 +83,7 @@ impl HirFileId {
                     }
                     MacroCallId::EagerMacro(id) => {
                         let loc = db.lookup_intern_eager_expansion(id);
-                        loc.file_id
+                        loc.call.file_id
                     }
                 };
                 file_id.original_file(db)
@@ -103,7 +103,7 @@ impl HirFileId {
                 }
                 MacroCallId::EagerMacro(id) => {
                     let loc = db.lookup_intern_eager_expansion(id);
-                    loc.file_id
+                    loc.call.file_id
                 }
             };
         }
@@ -114,17 +114,16 @@ impl HirFileId {
     pub fn call_node(self, db: &dyn db::AstDatabase) -> Option<InFile<SyntaxNode>> {
         match self.0 {
             HirFileIdRepr::FileId(_) => None,
-            HirFileIdRepr::MacroFile(macro_file) => {
-                let lazy_id = match macro_file.macro_call_id {
-                    MacroCallId::LazyMacro(id) => id,
-                    MacroCallId::EagerMacro(_id) => {
-                        // FIXME: handle call node for eager macro
-                        return None;
-                    }
-                };
-                let loc = db.lookup_intern_macro(lazy_id);
-                Some(loc.kind.node(db))
-            }
+            HirFileIdRepr::MacroFile(macro_file) => match macro_file.macro_call_id {
+                MacroCallId::LazyMacro(lazy_id) => {
+                    let loc: MacroCallLoc = db.lookup_intern_macro(lazy_id);
+                    Some(loc.kind.node(db))
+                }
+                MacroCallId::EagerMacro(id) => {
+                    let loc: EagerCallLoc = db.lookup_intern_eager_expansion(id);
+                    Some(loc.call.with_value(loc.call.to_node(db).syntax().clone()))
+                }
+            },
         }
     }
 
@@ -304,7 +303,7 @@ pub struct EagerCallLoc {
     pub(crate) fragment: FragmentKind,
     pub(crate) subtree: Arc<tt::Subtree>,
     pub(crate) krate: CrateId,
-    pub(crate) file_id: HirFileId,
+    pub(crate) call: AstId<ast::MacroCall>,
 }
 
 /// ExpansionInfo mainly describes how to map text range between src and expanded macro