1 files changed, 25 insertions, 0 deletions
diff --git a/third_party/rust/memchr/src/memchr/naive.rs b/third_party/rust/memchr/src/memchr/naive.rs
new file mode 100644
index 0000000000..3f3053d481
--- /dev/null
+++ b/third_party/rust/memchr/src/memchr/naive.rs
@@ -0,0 +1,25 @@
+#![allow(dead_code)]
+
+pub fn memchr(n1: u8, haystack: &[u8]) -> Option<usize> {
+    haystack.iter().position(|&b| b == n1)
+}
+
+pub fn memchr2(n1: u8, n2: u8, haystack: &[u8]) -> Option<usize> {
+    haystack.iter().position(|&b| b == n1 || b == n2)
+}
+
+pub fn memchr3(n1: u8, n2: u8, n3: u8, haystack: &[u8]) -> Option<usize> {
+    haystack.iter().position(|&b| b == n1 || b == n2 || b == n3)
+}
+
+pub fn memrchr(n1: u8, haystack: &[u8]) -> Option<usize> {
+    haystack.iter().rposition(|&b| b == n1)
+}
+
+pub fn memrchr2(n1: u8, n2: u8, haystack: &[u8]) -> Option<usize> {
+    haystack.iter().rposition(|&b| b == n1 || b == n2)
+}
+
+pub fn memrchr3(n1: u8, n2: u8, n3: u8, haystack: &[u8]) -> Option<usize> {
+    haystack.iter().rposition(|&b| b == n1 || b == n2 || b == n3)
+}