1 files changed, 89 insertions, 0 deletions
diff --git a/vendor/rowan/src/green/element.rs b/vendor/rowan/src/green/element.rs
new file mode 100644
index 000000000..2d1ce1f61
--- /dev/null
+++ b/vendor/rowan/src/green/element.rs
@@ -0,0 +1,89 @@
+use std::borrow::Cow;
+
+use crate::{
+    green::{GreenNode, GreenToken, SyntaxKind},
+    GreenNodeData, NodeOrToken, TextSize,
+};
+
+use super::GreenTokenData;
+
+pub(super) type GreenElement = NodeOrToken<GreenNode, GreenToken>;
+pub(crate) type GreenElementRef<'a> = NodeOrToken<&'a GreenNodeData, &'a GreenTokenData>;
+
+impl From<GreenNode> for GreenElement {
+    #[inline]
+    fn from(node: GreenNode) -> GreenElement {
+        NodeOrToken::Node(node)
+    }
+}
+
+impl<'a> From<&'a GreenNode> for GreenElementRef<'a> {
+    #[inline]
+    fn from(node: &'a GreenNode) -> GreenElementRef<'a> {
+        NodeOrToken::Node(node)
+    }
+}
+
+impl From<GreenToken> for GreenElement {
+    #[inline]
+    fn from(token: GreenToken) -> GreenElement {
+        NodeOrToken::Token(token)
+    }
+}
+
+impl From<Cow<'_, GreenNodeData>> for GreenElement {
+    #[inline]
+    fn from(cow: Cow<'_, GreenNodeData>) -> Self {
+        NodeOrToken::Node(cow.into_owned())
+    }
+}
+
+impl<'a> From<&'a GreenToken> for GreenElementRef<'a> {
+    #[inline]
+    fn from(token: &'a GreenToken) -> GreenElementRef<'a> {
+        NodeOrToken::Token(token)
+    }
+}
+
+impl GreenElementRef<'_> {
+    pub fn to_owned(self) -> GreenElement {
+        match self {
+            NodeOrToken::Node(it) => NodeOrToken::Node(it.to_owned()),
+            NodeOrToken::Token(it) => NodeOrToken::Token(it.to_owned()),
+        }
+    }
+}
+
+impl GreenElement {
+    /// Returns kind of this element.
+    #[inline]
+    pub fn kind(&self) -> SyntaxKind {
+        self.as_deref().kind()
+    }
+
+    /// Returns the length of the text covered by this element.
+    #[inline]
+    pub fn text_len(&self) -> TextSize {
+        self.as_deref().text_len()
+    }
+}
+
+impl GreenElementRef<'_> {
+    /// Returns kind of this element.
+    #[inline]
+    pub fn kind(&self) -> SyntaxKind {
+        match self {
+            NodeOrToken::Node(it) => it.kind(),
+            NodeOrToken::Token(it) => it.kind(),
+        }
+    }
+
+    /// Returns the length of the text covered by this element.
+    #[inline]
+    pub fn text_len(self) -> TextSize {
+        match self {
+            NodeOrToken::Node(it) => it.text_len(),
+            NodeOrToken::Token(it) => it.text_len(),
+        }
+    }
+}