1 files changed, 45 insertions, 0 deletions

diff --git a/crates/ra_macros/src/tt.rs b/crates/ra_macros/src/tt.rs
new file mode 100644
index 000000000..364eed9e6
--- /dev/null
+++ b/crates/ra_macros/src/tt.rs
@@ -0,0 +1,45 @@
+use smol_str::SmolStr;
+
+#[derive(Debug)]
+pub enum TokenTree {
+    Leaf(Leaf),
+    Subtree(Subtree),
+}
+impl_froms!(TokenTree: Leaf, Subtree);
+
+#[derive(Debug)]
+pub enum Leaf {
+    Literal(Literal),
+    Punct(Punct),
+    Ident(Ident),
+}
+impl_froms!(Leaf: Literal, Punct, Ident);
+
+#[derive(Debug)]
+pub struct Subtree {
+    pub delimiter: Delimiter,
+    pub token_trees: Vec<TokenTree>,
+}
+
+#[derive(Clone, Copy, Debug)]
+pub enum Delimiter {
+    Parenthesis,
+    Brace,
+    Bracket,
+    None,
+}
+
+#[derive(Debug)]
+pub struct Literal {
+    pub text: SmolStr,
+}
+
+#[derive(Debug)]
+pub struct Punct {
+    pub char: char,
+}
+
+#[derive(Debug)]
+pub struct Ident {
+    pub text: SmolStr,
+}