Moved TokenSet into it's own file.

1 files changed, 1 insertions, 36 deletions

diff --git a/crates/libsyntax2/src/parser_api.rs b/crates/libsyntax2/src/parser_api.rs
index 9bc58e7f7..c4753140e 100644
--- a/crates/libsyntax2/src/parser_api.rs
+++ b/crates/libsyntax2/src/parser_api.rs
@@ -1,45 +1,10 @@
 use {
+    token_set::TokenSet,
     parser_impl::ParserImpl,
     SyntaxKind::{self, ERROR},
     drop_bomb::DropBomb,
 };
 
-#[derive(Clone, Copy)]
-pub(crate) struct TokenSet(pub(crate) u128);
-
-fn mask(kind: SyntaxKind) -> u128 {
-    1u128 << (kind as usize)
-}
-
-impl TokenSet {
-    pub const EMPTY: TokenSet = TokenSet(0);
-
-    pub fn contains(&self, kind: SyntaxKind) -> bool {
-        self.0 & mask(kind) != 0
-    }
-}
-
-#[macro_export]
-macro_rules! token_set {
-    ($($t:ident),*) => { TokenSet($(1u128 << ($t as usize))|*) };
-    ($($t:ident),* ,) => { token_set!($($t),*) };
-}
-
-#[macro_export]
-macro_rules! token_set_union {
-    ($($ts:expr),*) => { TokenSet($($ts.0)|*) };
-    ($($ts:expr),* ,) => { token_set_union!($($ts),*) };
-}
-
-#[test]
-fn token_set_works_for_tokens() {
-    use SyntaxKind::*;
-    let ts = token_set! { EOF, SHEBANG };
-    assert!(ts.contains(EOF));
-    assert!(ts.contains(SHEBANG));
-    assert!(!ts.contains(PLUS));
-}
-
 /// `Parser` struct provides the low-level API for
 /// navigating through the stream of tokens and
 /// constructing the parse tree. The actual parsing