From ba21da52741bf207db5081811e00eacf45796429 Mon Sep 17 00:00:00 2001
From: Aleksey Kladov <aleksey.kladov@gmail.com>
Date: Tue, 7 Aug 2018 14:41:03 +0300
Subject: tuple patterns

---
 src/grammar.ron               |  1 +
 src/grammar/patterns.rs       | 14 +++++++++++++-
 src/syntax_kinds/generated.rs |  2 ++
 3 files changed, 16 insertions(+), 1 deletion(-)

(limited to 'src')

diff --git a/src/grammar.ron b/src/grammar.ron
index 0620a8b8c..5181e296e 100644
--- a/src/grammar.ron
+++ b/src/grammar.ron
@@ -140,6 +140,7 @@ Grammar(
         "PLACEHOLDER_PAT",
         "PATH_PAT",
         "STRUCT_PAT",
+        "TUPLE_STRUCT_PAT",
         "TUPLE_PAT",
 
         // atoms
diff --git a/src/grammar/patterns.rs b/src/grammar/patterns.rs
index d67f180fa..f1d48b5fa 100644
--- a/src/grammar/patterns.rs
+++ b/src/grammar/patterns.rs
@@ -16,6 +16,7 @@ pub(super) fn pattern(p: &mut Parser) {
     match la0 {
         UNDERSCORE => placeholder_pat(p),
         AMP => ref_pat(p),
+        L_PAREN => tuple_pat(p),
         _ => p.err_and_bump("expected pattern"),
     }
 }
@@ -33,7 +34,7 @@ fn path_pat(p: &mut Parser) {
     let kind = match p.current() {
         L_PAREN => {
             tuple_pat_fields(p);
-            TUPLE_PAT
+            TUPLE_STRUCT_PAT
         }
         L_CURLY => {
             struct_pat_fields(p);
@@ -116,6 +117,17 @@ fn ref_pat(p: &mut Parser) {
     m.complete(p, REF_PAT);
 }
 
+// test tuple_pat
+// fn main() {
+//     let (a, b, ..) = ();
+// }
+fn tuple_pat(p: &mut Parser) {
+    assert!(p.at(L_PAREN));
+    let m = p.start();
+    tuple_pat_fields(p);
+    m.complete(p, TUPLE_PAT);
+}
+
 // test bind_pat
 // fn main() {
 //     let a = ();
diff --git a/src/syntax_kinds/generated.rs b/src/syntax_kinds/generated.rs
index db8c20004..c8ddf333c 100644
--- a/src/syntax_kinds/generated.rs
+++ b/src/syntax_kinds/generated.rs
@@ -132,6 +132,7 @@ pub enum SyntaxKind {
     PLACEHOLDER_PAT,
     PATH_PAT,
     STRUCT_PAT,
+    TUPLE_STRUCT_PAT,
     TUPLE_PAT,
     TUPLE_EXPR,
     ARRAY_EXPR,
@@ -371,6 +372,7 @@ impl SyntaxKind {
             PLACEHOLDER_PAT => &SyntaxInfo { name: "PLACEHOLDER_PAT" },
             PATH_PAT => &SyntaxInfo { name: "PATH_PAT" },
             STRUCT_PAT => &SyntaxInfo { name: "STRUCT_PAT" },
+            TUPLE_STRUCT_PAT => &SyntaxInfo { name: "TUPLE_STRUCT_PAT" },
             TUPLE_PAT => &SyntaxInfo { name: "TUPLE_PAT" },
             TUPLE_EXPR => &SyntaxInfo { name: "TUPLE_EXPR" },
             ARRAY_EXPR => &SyntaxInfo { name: "ARRAY_EXPR" },
-- 
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