From 85cd3524e28443836658615fe40599bf10a96943 Mon Sep 17 00:00:00 2001
From: Daiki Ihara <sasurau4@gmail.com>
Date: Thu, 14 Jan 2021 00:01:50 +0900
Subject: Add support for yiled keyword
---
crates/parser/src/grammar/expressions/atom.rs | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
(limited to 'crates/parser/src/grammar/expressions')
diff --git a/crates/parser/src/grammar/expressions/atom.rs b/crates/parser/src/grammar/expressions/atom.rs
index d61950b96..093a9890d 100644
--- a/crates/parser/src/grammar/expressions/atom.rs
+++ b/crates/parser/src/grammar/expressions/atom.rs
@@ -50,6 +50,7 @@ pub(super) const ATOM_EXPR_FIRST: TokenSet =
T![match],
T![unsafe],
T![return],
+ T![yield],
T![break],
T![continue],
T![async],
@@ -142,6 +143,7 @@ pub(super) fn atom_expr(p: &mut Parser, r: Restrictions) -> Option<(CompletedMar
block_expr_unchecked(p)
}
T![return] => return_expr(p),
+ T![yield] => yield_expr(p),
T![continue] => continue_expr(p),
T![break] => break_expr(p, r),
_ => {
@@ -508,6 +510,20 @@ fn return_expr(p: &mut Parser) -> CompletedMarker {
}
m.complete(p, RETURN_EXPR)
}
+// test yield_expr
+// fn foo() {
+// yield;
+// yield 1;
+// }
+fn yield_expr(p: &mut Parser) -> CompletedMarker {
+ assert!(p.at(T![yield]));
+ let m = p.start();
+ p.bump(T![yield]);
+ if p.at_ts(EXPR_FIRST) {
+ expr(p);
+ }
+ m.complete(p, YIELD_EXPR)
+}
// test continue_expr
// fn foo() {
--
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