Merge #4225

4225: Special-case try macro_rules r=matklad a=edwin0cheng

Similar to #4221, but for `macro_rules! try {}`

Co-authored-by: Edwin Cheng <[email protected]>

3 files changed, 39 insertions, 0 deletions

diff --git a/crates/ra_parser/src/grammar/items.rs b/crates/ra_parser/src/grammar/items.rs
index 433ed6812..1503a8730 100644
--- a/crates/ra_parser/src/grammar/items.rs
+++ b/crates/ra_parser/src/grammar/items.rs
@@ -415,6 +415,17 @@ pub(super) fn macro_call_after_excl(p: &mut Parser) -> BlockLike {
     if p.at(IDENT) {
         name(p);
     }
+    // Special-case `macro_rules! try`.
+    // This is a hack until we do proper edition support
+
+    // test try_macro_rules
+    // macro_rules! try { () => {} }
+    if p.at(T![try]) {
+        let m = p.start();
+        p.bump_remap(IDENT);
+        m.complete(p, NAME);
+    }
+
     match p.current() {
         T!['{'] => {
             token_tree(p);
diff --git a/crates/ra_syntax/test_data/parser/inline/ok/0160_try_macro_rules.rast b/crates/ra_syntax/test_data/parser/inline/ok/0160_try_macro_rules.rast
new file mode 100644
index 000000000..05b89d1c3
--- /dev/null
+++ b/crates/ra_syntax/test_data/parser/inline/ok/0160_try_macro_rules.rast
@@ -0,0 +1,27 @@
+[email protected]
+  [email protected]
+    [email protected]
+      [email protected]
+        [email protected]
+          [email protected] "macro_rules"
+    [email protected] "!"
+    [email protected] " "
+    [email protected]
+      [email protected] "try"
+    [email protected] " "
+    [email protected]
+      [email protected] "{"
+      [email protected] " "
+      [email protected]
+        [email protected] "("
+        [email protected] ")"
+      [email protected] " "
+      [email protected] "="
+      [email protected] ">"
+      [email protected] " "
+      [email protected]
+        [email protected] "{"
+        [email protected] "}"
+      [email protected] " "
+      [email protected] "}"
+  [email protected] "\n"
diff --git a/crates/ra_syntax/test_data/parser/inline/ok/0160_try_macro_rules.rs b/crates/ra_syntax/test_data/parser/inline/ok/0160_try_macro_rules.rs
new file mode 100644
index 000000000..2e2ab6e60
--- /dev/null
+++ b/crates/ra_syntax/test_data/parser/inline/ok/0160_try_macro_rules.rs
@@ -0,0 +1 @@
+macro_rules! try { () => {} }