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-rw-r--r--crates/hir-expand/src/builtin_fn_macro.rs10
-rw-r--r--crates/hir-expand/src/name.rs1
-rw-r--r--crates/proc-macro-srv/src/lib.rs9
-rw-r--r--crates/proc-macro-srv/src/server/rust_analyzer_span.rs44
-rw-r--r--crates/proc-macro-srv/src/tests/mod.rs113
-rw-r--r--crates/proc-macro-srv/src/tests/utils.rs34
-rw-r--r--crates/proc-macro-test/imp/src/lib.rs12
7 files changed, 148 insertions, 75 deletions
diff --git a/crates/hir-expand/src/builtin_fn_macro.rs b/crates/hir-expand/src/builtin_fn_macro.rs
index 0475a0f4acc..6f5f0295e2f 100644
--- a/crates/hir-expand/src/builtin_fn_macro.rs
+++ b/crates/hir-expand/src/builtin_fn_macro.rs
@@ -108,6 +108,7 @@ register_builtin! {
     (format_args, FormatArgs) => format_args_expand,
     (const_format_args, ConstFormatArgs) => format_args_expand,
     (format_args_nl, FormatArgsNl) => format_args_nl_expand,
+    (quote, Quote) => quote_expand,
 
     EAGER:
     (compile_error, CompileError) => compile_error_expand,
@@ -770,3 +771,12 @@ fn option_env_expand(
 
     ExpandResult::ok(expanded)
 }
+
+fn quote_expand(
+    _db: &dyn ExpandDatabase,
+    _arg_id: MacroCallId,
+    _tt: &tt::Subtree,
+    _span: SpanData,
+) -> ExpandResult<tt::Subtree> {
+    ExpandResult::only_err(ExpandError::other("quote! is not implemented"))
+}
diff --git a/crates/hir-expand/src/name.rs b/crates/hir-expand/src/name.rs
index d122938e8e5..3d8d01e2556 100644
--- a/crates/hir-expand/src/name.rs
+++ b/crates/hir-expand/src/name.rs
@@ -388,6 +388,7 @@ pub mod known {
         log_syntax,
         module_path,
         option_env,
+        quote,
         std_panic,
         stringify,
         trace_macros,
diff --git a/crates/proc-macro-srv/src/lib.rs b/crates/proc-macro-srv/src/lib.rs
index 3f62ded24cf..c13bda90f3a 100644
--- a/crates/proc-macro-srv/src/lib.rs
+++ b/crates/proc-macro-srv/src/lib.rs
@@ -60,7 +60,14 @@ impl ProcMacroSrvSpan for TokenId {
 impl ProcMacroSrvSpan for Span {
     type Server = server::rust_analyzer_span::RaSpanServer;
     fn make_server(call_site: Self, def_site: Self, mixed_site: Self) -> Self::Server {
-        Self::Server { interner: &server::SYMBOL_INTERNER, call_site, def_site, mixed_site }
+        Self::Server {
+            interner: &server::SYMBOL_INTERNER,
+            call_site,
+            def_site,
+            mixed_site,
+            tracked_env_vars: Default::default(),
+            tracked_paths: Default::default(),
+        }
     }
 }
 
diff --git a/crates/proc-macro-srv/src/server/rust_analyzer_span.rs b/crates/proc-macro-srv/src/server/rust_analyzer_span.rs
index 92e1ec0a948..d8648da604e 100644
--- a/crates/proc-macro-srv/src/server/rust_analyzer_span.rs
+++ b/crates/proc-macro-srv/src/server/rust_analyzer_span.rs
@@ -1,4 +1,5 @@
 use std::{
+    collections::{HashMap, HashSet},
     iter,
     ops::{Bound, Range},
 };
@@ -35,6 +36,10 @@ pub struct FreeFunctions;
 
 pub struct RaSpanServer {
     pub(crate) interner: SymbolInternerRef,
+    // FIXME: Report this back to the caller to track as dependencies
+    pub tracked_env_vars: HashMap<Box<str>, Option<Box<str>>>,
+    // FIXME: Report this back to the caller to track as dependencies
+    pub tracked_paths: HashSet<Box<str>>,
     pub call_site: Span,
     pub def_site: Span,
     pub mixed_site: Span,
@@ -49,11 +54,12 @@ impl server::Types for RaSpanServer {
 }
 
 impl server::FreeFunctions for RaSpanServer {
-    fn track_env_var(&mut self, _var: &str, _value: Option<&str>) {
-        // FIXME: track env var accesses
-        // https://github.com/rust-lang/rust/pull/71858
+    fn track_env_var(&mut self, var: &str, value: Option<&str>) {
+        self.tracked_env_vars.insert(var.into(), value.map(Into::into));
+    }
+    fn track_path(&mut self, path: &str) {
+        self.tracked_paths.insert(path.into());
     }
-    fn track_path(&mut self, _path: &str) {}
 
     fn literal_from_str(
         &mut self,
@@ -247,24 +253,38 @@ impl server::Span for RaSpanServer {
     /// See PR:
     /// https://github.com/rust-lang/rust/pull/55780
     fn source_text(&mut self, _span: Self::Span) -> Option<String> {
+        // FIXME requires db
         None
     }
 
     fn parent(&mut self, _span: Self::Span) -> Option<Self::Span> {
-        // FIXME handle span
+        // FIXME requires db, looks up the parent call site
         None
     }
     fn source(&mut self, span: Self::Span) -> Self::Span {
-        // FIXME handle span
+        // FIXME requires db, returns the top level call site
         span
     }
-    fn byte_range(&mut self, _span: Self::Span) -> Range<usize> {
-        // FIXME handle span
-        Range { start: 0, end: 0 }
+    fn byte_range(&mut self, span: Self::Span) -> Range<usize> {
+        // FIXME requires db to resolve the ast id, THIS IS NOT INCREMENTAL
+        Range { start: span.range.start().into(), end: span.range.end().into() }
     }
-    fn join(&mut self, first: Self::Span, _second: Self::Span) -> Option<Self::Span> {
-        // Just return the first span again, because some macros will unwrap the result.
-        Some(first)
+    fn join(&mut self, first: Self::Span, second: Self::Span) -> Option<Self::Span> {
+        if first.anchor != second.anchor {
+            return None;
+        }
+        if first.ctx != second.ctx {
+            if first.ctx.is_root() {
+                return Some(second);
+            } else if second.ctx.is_root() {
+                return Some(first);
+            }
+        }
+        Some(Span {
+            range: first.range.cover(second.range),
+            anchor: second.anchor,
+            ctx: second.ctx,
+        })
     }
     fn subspan(
         &mut self,
diff --git a/crates/proc-macro-srv/src/tests/mod.rs b/crates/proc-macro-srv/src/tests/mod.rs
index 1f4d1cf74ea..2320a04cf16 100644
--- a/crates/proc-macro-srv/src/tests/mod.rs
+++ b/crates/proc-macro-srv/src/tests/mod.rs
@@ -8,7 +8,7 @@ use expect_test::expect;
 
 #[test]
 fn test_derive_empty() {
-    assert_expand("DeriveEmpty", r#"struct S;"#, expect!["SUBTREE $$ 1 1"], expect!["SUBTREE $$ SpanData { range: 52..77, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) } SpanData { range: 52..77, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }"]);
+    assert_expand("DeriveEmpty", r#"struct S;"#, expect!["SUBTREE $$ 1 1"], expect!["SUBTREE $$ SpanData { range: 0..100, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) } SpanData { range: 0..100, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }"]);
 }
 
 #[test]
@@ -24,12 +24,12 @@ fn test_derive_error() {
                 LITERAL "#[derive(DeriveError)] struct S ;" 1
               PUNCH   ; [alone] 1"##]],
         expect![[r##"
-            SUBTREE $$ SpanData { range: 52..77, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) } SpanData { range: 52..77, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }
-              IDENT   compile_error SpanData { range: 52..77, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }
-              PUNCH   ! [alone] SpanData { range: 52..77, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }
-              SUBTREE () SpanData { range: 52..77, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) } SpanData { range: 52..77, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }
-                LITERAL "#[derive(DeriveError)] struct S ;" SpanData { range: 52..77, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }
-              PUNCH   ; [alone] SpanData { range: 52..77, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }"##]],
+            SUBTREE $$ SpanData { range: 0..100, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) } SpanData { range: 0..100, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }
+              IDENT   compile_error SpanData { range: 0..100, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }
+              PUNCH   ! [alone] SpanData { range: 0..100, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }
+              SUBTREE () SpanData { range: 0..100, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) } SpanData { range: 0..100, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }
+                LITERAL "#[derive(DeriveError)] struct S ;" SpanData { range: 0..100, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }
+              PUNCH   ; [alone] SpanData { range: 0..100, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }"##]],
     );
 }
 
@@ -48,14 +48,14 @@ fn test_fn_like_macro_noop() {
               PUNCH   , [alone] 1
               SUBTREE [] 1 1"#]],
         expect![[r#"
-            SUBTREE $$ SpanData { range: 52..77, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) } SpanData { range: 52..77, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }
-              IDENT   ident SpanData { range: 52..77, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }
-              PUNCH   , [alone] SpanData { range: 52..77, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }
-              LITERAL 0 SpanData { range: 52..77, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }
-              PUNCH   , [alone] SpanData { range: 52..77, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }
-              LITERAL 1 SpanData { range: 52..77, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }
-              PUNCH   , [alone] SpanData { range: 52..77, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }
-              SUBTREE [] SpanData { range: 52..77, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) } SpanData { range: 52..77, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }"#]],
+            SUBTREE $$ SpanData { range: 0..100, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) } SpanData { range: 0..100, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }
+              IDENT   ident SpanData { range: 0..5, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }
+              PUNCH   , [alone] SpanData { range: 5..6, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }
+              LITERAL 0 SpanData { range: 7..8, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }
+              PUNCH   , [alone] SpanData { range: 8..9, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }
+              LITERAL 1 SpanData { range: 10..11, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }
+              PUNCH   , [alone] SpanData { range: 11..12, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }
+              SUBTREE [] SpanData { range: 13..14, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) } SpanData { range: 14..15, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }"#]],
     );
 }
 
@@ -70,10 +70,10 @@ fn test_fn_like_macro_clone_ident_subtree() {
               PUNCH   , [alone] 1
               SUBTREE [] 1 1"#]],
         expect![[r#"
-            SUBTREE $$ SpanData { range: 52..77, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) } SpanData { range: 52..77, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }
-              IDENT   ident SpanData { range: 52..77, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }
-              PUNCH   , [alone] SpanData { range: 52..77, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }
-              SUBTREE [] SpanData { range: 52..77, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) } SpanData { range: 52..77, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }"#]],
+            SUBTREE $$ SpanData { range: 0..100, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) } SpanData { range: 0..100, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }
+              IDENT   ident SpanData { range: 0..5, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }
+              PUNCH   , [alone] SpanData { range: 5..6, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }
+              SUBTREE [] SpanData { range: 7..8, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) } SpanData { range: 7..8, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }"#]],
     );
 }
 
@@ -86,8 +86,22 @@ fn test_fn_like_macro_clone_raw_ident() {
             SUBTREE $$ 1 1
               IDENT   r#async 1"#]],
         expect![[r#"
-            SUBTREE $$ SpanData { range: 52..77, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) } SpanData { range: 52..77, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }
-              IDENT   r#async SpanData { range: 52..77, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }"#]],
+            SUBTREE $$ SpanData { range: 0..100, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) } SpanData { range: 0..100, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }
+              IDENT   r#async SpanData { range: 0..7, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }"#]],
+    );
+}
+
+#[test]
+fn test_fn_like_fn_like_span_join() {
+    assert_expand(
+        "fn_like_span_join",
+        "foo     bar",
+        expect![[r#"
+            SUBTREE $$ 1 1
+              IDENT   r#joined 1"#]],
+        expect![[r#"
+            SUBTREE $$ SpanData { range: 0..100, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) } SpanData { range: 0..100, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }
+              IDENT   r#joined SpanData { range: 0..11, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }"#]],
     );
 }
 
@@ -106,14 +120,14 @@ fn test_fn_like_mk_literals() {
               LITERAL 123i64 1
               LITERAL 123 1"#]],
         expect![[r#"
-            SUBTREE $$ SpanData { range: 52..77, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) } SpanData { range: 52..77, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }
-              LITERAL b"byte_string" SpanData { range: 52..77, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }
-              LITERAL 'c' SpanData { range: 52..77, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }
-              LITERAL "string" SpanData { range: 52..77, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }
-              LITERAL 3.14f64 SpanData { range: 52..77, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }
-              LITERAL 3.14 SpanData { range: 52..77, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }
-              LITERAL 123i64 SpanData { range: 52..77, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }
-              LITERAL 123 SpanData { range: 52..77, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }"#]],
+            SUBTREE $$ SpanData { range: 0..100, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) } SpanData { range: 0..100, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }
+              LITERAL b"byte_string" SpanData { range: 0..100, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }
+              LITERAL 'c' SpanData { range: 0..100, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }
+              LITERAL "string" SpanData { range: 0..100, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }
+              LITERAL 3.14f64 SpanData { range: 0..100, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }
+              LITERAL 3.14 SpanData { range: 0..100, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }
+              LITERAL 123i64 SpanData { range: 0..100, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }
+              LITERAL 123 SpanData { range: 0..100, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }"#]],
     );
 }
 
@@ -127,9 +141,9 @@ fn test_fn_like_mk_idents() {
               IDENT   standard 1
               IDENT   r#raw 1"#]],
         expect![[r#"
-            SUBTREE $$ SpanData { range: 52..77, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) } SpanData { range: 52..77, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }
-              IDENT   standard SpanData { range: 52..77, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }
-              IDENT   r#raw SpanData { range: 52..77, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }"#]],
+            SUBTREE $$ SpanData { range: 0..100, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) } SpanData { range: 0..100, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }
+              IDENT   standard SpanData { range: 0..100, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }
+              IDENT   r#raw SpanData { range: 0..100, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }"#]],
     );
 }
 
@@ -151,17 +165,17 @@ fn test_fn_like_macro_clone_literals() {
               PUNCH   , [alone] 1
               LITERAL "hello bridge" 1"#]],
         expect![[r#"
-            SUBTREE $$ SpanData { range: 52..77, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) } SpanData { range: 52..77, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }
-              LITERAL 1u16 SpanData { range: 52..77, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }
-              PUNCH   , [alone] SpanData { range: 52..77, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }
-              LITERAL 2_u32 SpanData { range: 52..77, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }
-              PUNCH   , [alone] SpanData { range: 52..77, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }
-              PUNCH   - [alone] SpanData { range: 52..77, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }
-              LITERAL 4i64 SpanData { range: 52..77, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }
-              PUNCH   , [alone] SpanData { range: 52..77, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }
-              LITERAL 3.14f32 SpanData { range: 52..77, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }
-              PUNCH   , [alone] SpanData { range: 52..77, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }
-              LITERAL "hello bridge" SpanData { range: 52..77, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }"#]],
+            SUBTREE $$ SpanData { range: 0..100, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) } SpanData { range: 0..100, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }
+              LITERAL 1u16 SpanData { range: 0..4, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }
+              PUNCH   , [alone] SpanData { range: 4..5, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }
+              LITERAL 2_u32 SpanData { range: 6..11, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }
+              PUNCH   , [alone] SpanData { range: 11..12, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }
+              PUNCH   - [alone] SpanData { range: 13..14, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }
+              LITERAL 4i64 SpanData { range: 14..18, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }
+              PUNCH   , [alone] SpanData { range: 18..19, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }
+              LITERAL 3.14f32 SpanData { range: 20..27, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }
+              PUNCH   , [alone] SpanData { range: 27..28, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }
+              LITERAL "hello bridge" SpanData { range: 29..43, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }"#]],
     );
 }
 
@@ -182,12 +196,12 @@ fn test_attr_macro() {
                 LITERAL "#[attr_error(some arguments)] mod m {}" 1
               PUNCH   ; [alone] 1"##]],
         expect![[r##"
-            SUBTREE $$ SpanData { range: 52..77, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) } SpanData { range: 52..77, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }
-              IDENT   compile_error SpanData { range: 52..77, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }
-              PUNCH   ! [alone] SpanData { range: 52..77, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }
-              SUBTREE () SpanData { range: 52..77, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) } SpanData { range: 52..77, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }
-                LITERAL "#[attr_error(some arguments)] mod m {}" SpanData { range: 52..77, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }
-              PUNCH   ; [alone] SpanData { range: 52..77, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }"##]],
+            SUBTREE $$ SpanData { range: 0..100, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) } SpanData { range: 0..100, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }
+              IDENT   compile_error SpanData { range: 0..100, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }
+              PUNCH   ! [alone] SpanData { range: 0..100, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }
+              SUBTREE () SpanData { range: 0..100, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) } SpanData { range: 0..100, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }
+                LITERAL "#[attr_error(some arguments)] mod m {}" SpanData { range: 0..100, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }
+              PUNCH   ; [alone] SpanData { range: 0..100, anchor: SpanAnchor(FileId(42), 2), ctx: SyntaxContextId(0) }"##]],
     );
 }
 
@@ -203,6 +217,7 @@ fn list_test_macros() {
         fn_like_clone_tokens [FuncLike]
         fn_like_mk_literals [FuncLike]
         fn_like_mk_idents [FuncLike]
+        fn_like_span_join [FuncLike]
         attr_noop [Attr]
         attr_panic [Attr]
         attr_error [Attr]
diff --git a/crates/proc-macro-srv/src/tests/utils.rs b/crates/proc-macro-srv/src/tests/utils.rs
index 9386e00117e..475dfbf015b 100644
--- a/crates/proc-macro-srv/src/tests/utils.rs
+++ b/crates/proc-macro-srv/src/tests/utils.rs
@@ -10,14 +10,20 @@ use tt::TextRange;
 
 use crate::{dylib, proc_macro_test_dylib_path, ProcMacroSrv};
 
-fn parse_string<S: tt::Span>(code: &str, call_site: S) -> Option<crate::server::TokenStream<S>> {
-    // This is a bit strange. We need to parse a string into a token stream into
-    // order to create a tt::SubTree from it in fixtures. `into_subtree` is
-    // implemented by all the ABIs we have so we arbitrarily choose one ABI to
-    // write a `parse_string` function for and use that. The tests don't really
-    // care which ABI we're using as the `into_subtree` function isn't part of
-    // the ABI and shouldn't change between ABI versions.
-    crate::server::TokenStream::from_str(code, call_site).ok()
+fn parse_string(call_site: TokenId, src: &str) -> crate::server::TokenStream<TokenId> {
+    crate::server::TokenStream::with_subtree(
+        mbe::parse_to_token_tree_static_span(call_site, src).unwrap(),
+    )
+}
+
+fn parse_string_spanned(
+    anchor: SpanAnchor,
+    call_site: SyntaxContextId,
+    src: &str,
+) -> crate::server::TokenStream<SpanData> {
+    crate::server::TokenStream::with_subtree(
+        mbe::parse_to_token_tree(anchor, call_site, src).unwrap(),
+    )
 }
 
 pub fn assert_expand(macro_name: &str, ra_fixture: &str, expect: Expect, expect_s: Expect) {
@@ -47,8 +53,8 @@ fn assert_expand_impl(
     let def_site = TokenId(0);
     let call_site = TokenId(1);
     let mixed_site = TokenId(2);
-    let input_ts = parse_string(input, call_site).unwrap();
-    let attr_ts = attr.map(|attr| parse_string(attr, call_site).unwrap().into_subtree(call_site));
+    let input_ts = parse_string(call_site, input);
+    let attr_ts = attr.map(|attr| parse_string(call_site, attr).into_subtree(call_site));
 
     let res = expander
         .expand(
@@ -71,7 +77,7 @@ fn assert_expand_impl(
         ctx: SyntaxContextId::ROOT,
     };
     let call_site = SpanData {
-        range: TextRange::new(52.into(), 77.into()),
+        range: TextRange::new(0.into(), 100.into()),
         anchor: SpanAnchor {
             file_id: FileId::from_raw(42),
             ast_id: ErasedFileAstId::from_raw(From::from(2)),
@@ -80,8 +86,10 @@ fn assert_expand_impl(
     };
     let mixed_site = call_site;
 
-    let fixture = parse_string(input, call_site).unwrap();
-    let attr = attr.map(|attr| parse_string(attr, call_site).unwrap().into_subtree(call_site));
+    let fixture = parse_string_spanned(call_site.anchor, call_site.ctx, input);
+    let attr = attr.map(|attr| {
+        parse_string_spanned(call_site.anchor, call_site.ctx, attr).into_subtree(call_site)
+    });
 
     let res = expander
         .expand(macro_name, fixture.into_subtree(call_site), attr, def_site, call_site, mixed_site)
diff --git a/crates/proc-macro-test/imp/src/lib.rs b/crates/proc-macro-test/imp/src/lib.rs
index 32510fba2f8..d0f73dca326 100644
--- a/crates/proc-macro-test/imp/src/lib.rs
+++ b/crates/proc-macro-test/imp/src/lib.rs
@@ -1,6 +1,7 @@
 //! Exports a few trivial procedural macros for testing.
 
 #![warn(rust_2018_idioms, unused_lifetimes)]
+#![feature(proc_macro_span)]
 
 use proc_macro::{Group, Ident, Literal, Punct, Span, TokenStream, TokenTree};
 
@@ -49,6 +50,17 @@ pub fn fn_like_mk_idents(_args: TokenStream) -> TokenStream {
     TokenStream::from_iter(trees)
 }
 
+#[proc_macro]
+pub fn fn_like_span_join(args: TokenStream) -> TokenStream {
+    let args = &mut args.into_iter();
+    let first = args.next().unwrap();
+    let second = args.next().unwrap();
+    TokenStream::from(TokenTree::from(Ident::new_raw(
+        "joined",
+        first.span().join(second.span()).unwrap(),
+    )))
+}
+
 #[proc_macro_attribute]
 pub fn attr_noop(_args: TokenStream, item: TokenStream) -> TokenStream {
     item
generated by cgit-pink 1.4.1-3-g733a5 (git 2.37.1) at 2026-04-23 17:48:33 +0000