1 files changed, 59 insertions, 0 deletions
diff --git a/third_party/rust/httparse/src/macros.rs b/third_party/rust/httparse/src/macros.rs
new file mode 100644
index 0000000000..fa4cf0301b
--- /dev/null
+++ b/third_party/rust/httparse/src/macros.rs
@@ -0,0 +1,59 @@
+///! Utility macros
+
+macro_rules! next {
+    ($bytes:ident) => ({
+        match $bytes.next() {
+            Some(b) => b,
+            None => return Ok(Status::Partial)
+        }
+    })
+}
+
+macro_rules! expect {
+    ($bytes:ident.next() == $pat:pat => $ret:expr) => {
+        expect!(next!($bytes) => $pat |? $ret)
+    };
+    ($e:expr => $pat:pat |? $ret:expr) => {
+        match $e {
+            v@$pat => v,
+            _ => return $ret
+        }
+    };
+}
+
+macro_rules! complete {
+    ($e:expr) => {
+        match $e? {
+            Status::Complete(v) => v,
+            Status::Partial => return Ok(Status::Partial)
+        }
+    }
+}
+
+macro_rules! byte_map {
+    ($($flag:expr,)*) => ([
+        $($flag != 0,)*
+    ])
+}
+
+macro_rules! space {
+    ($bytes:ident or $err:expr) => ({
+        expect!($bytes.next() == b' ' => Err($err));
+        $bytes.slice();
+    })
+}
+
+macro_rules! newline {
+    ($bytes:ident) => ({
+        match next!($bytes) {
+            b'\r' => {
+                expect!($bytes.next() == b'\n' => Err(Error::NewLine));
+                $bytes.slice();
+            },
+            b'\n' => {
+                $bytes.slice();
+            },
+            _ => return Err(Error::NewLine)
+        }
+    })
+}