Add Type::Void variant
Not currently usable as a function argument or explicit return value,
but will be required when we introduce Result for the case of fallible
void functions, whose return type will be Result<()>.
diff --git a/syntax/span.rs b/syntax/span.rs
new file mode 100644
index 0000000..c78567e
--- /dev/null
+++ b/syntax/span.rs
@@ -0,0 +1,16 @@
+use std::hash::{Hash, Hasher};
+
+#[derive(Copy, Clone)]
+pub struct Span(pub proc_macro2::Span);
+
+impl Hash for Span {
+ fn hash<H: Hasher>(&self, _state: &mut H) {}
+}
+
+impl Eq for Span {}
+
+impl PartialEq for Span {
+ fn eq(&self, _other: &Span) -> bool {
+ true
+ }
+}