commit before easter break

orchid-std/src/macros/rule/vec_attrs.rs

@@ -0,0 +1,16 @@
+use orchid_api::PhKind;
+use orchid_base::interner::Tok;
+use orchid_base::tree::Ph;
+
+use crate::macros::{MacTok, MacTree};
+
+/// Returns the name, priority and at_least_one of the expression if it is
+/// a vectorial placeholder
+#[must_use]
+pub fn vec_attrs(expr: &MacTree) -> Option<(Tok<String>, u8, bool)> {
+	match (*expr.tok).clone() {
+		MacTok::Ph(Ph { kind: PhKind::Vector { priority, at_least_one }, name }) =>
+			Some((name, priority, at_least_one)),
+		_ => None,
+	}
+}