From 03a9bbacf2a82faaecc269c1d97dea392f4f9874 Mon Sep 17 00:00:00 2001
From: Lukas Wirth <lukastw97@gmail.com>
Date: Wed, 23 Dec 2020 01:49:43 +0100
Subject: Parse ConstBlockPat

---
 crates/parser/src/grammar/patterns.rs | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

(limited to 'crates/parser')

diff --git a/crates/parser/src/grammar/patterns.rs b/crates/parser/src/grammar/patterns.rs
index 7e7f73dee..44400c9f8 100644
--- a/crates/parser/src/grammar/patterns.rs
+++ b/crates/parser/src/grammar/patterns.rs
@@ -1,5 +1,7 @@
 //! FIXME: write short doc here
 
+use expressions::block_expr;
+
 use super::*;
 
 pub(super) const PATTERN_FIRST: TokenSet =
@@ -89,6 +91,7 @@ fn atom_pat(p: &mut Parser, recovery_set: TokenSet) -> Option<CompletedMarker> {
     let m = match p.nth(0) {
         T![box] => box_pat(p),
         T![ref] | T![mut] => ident_pat(p, true),
+        T![const] => const_block_pat(p),
         IDENT => match p.nth(1) {
             // Checks the token after an IDENT to see if a pattern is a path (Struct { .. }) or macro
             // (T![x]).
@@ -386,3 +389,16 @@ fn box_pat(p: &mut Parser) -> CompletedMarker {
     pattern_single(p);
     m.complete(p, BOX_PAT)
 }
+
+// test const_block_pat
+// fn main() {
+//     let const { 15 } = ();
+//     let const { foo(); bar() } = ();
+// }
+fn const_block_pat(p: &mut Parser) -> CompletedMarker {
+    assert!(p.at(T![const]));
+    let m = p.start();
+    p.bump(T![const]);
+    block_expr(p);
+    m.complete(p, CONST_BLOCK_PAT)
+}
-- 
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