From 5222b8aba3b1c2c68706aacf6869423a8e4fe6d5 Mon Sep 17 00:00:00 2001
From: Aleksey Kladov <aleksey.kladov@gmail.com>
Date: Wed, 20 Feb 2019 15:47:32 +0300
Subject: move all parsing related bits to a separate module

---
 crates/ra_syntax/src/parsing/grammar/attributes.rs | 31 ++++++++++++++++++++++
 1 file changed, 31 insertions(+)
 create mode 100644 crates/ra_syntax/src/parsing/grammar/attributes.rs

(limited to 'crates/ra_syntax/src/parsing/grammar/attributes.rs')

diff --git a/crates/ra_syntax/src/parsing/grammar/attributes.rs b/crates/ra_syntax/src/parsing/grammar/attributes.rs
new file mode 100644
index 000000000..cd30e8a45
--- /dev/null
+++ b/crates/ra_syntax/src/parsing/grammar/attributes.rs
@@ -0,0 +1,31 @@
+use super::*;
+
+pub(super) fn inner_attributes(p: &mut Parser) {
+    while p.current() == POUND && p.nth(1) == EXCL {
+        attribute(p, true)
+    }
+}
+
+pub(super) fn outer_attributes(p: &mut Parser) {
+    while p.at(POUND) {
+        attribute(p, false)
+    }
+}
+
+fn attribute(p: &mut Parser, inner: bool) {
+    let attr = p.start();
+    assert!(p.at(POUND));
+    p.bump();
+
+    if inner {
+        assert!(p.at(EXCL));
+        p.bump();
+    }
+
+    if p.at(L_BRACK) {
+        items::token_tree(p);
+    } else {
+        p.error("expected `[`");
+    }
+    attr.complete(p, ATTR);
+}
-- 
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