ast: Break compatibility

- Turned `static` and `const` into scoped modifiers (like `pub`
- Added anonymous record patterns

src/parser/expr.rs

@@ -101,6 +101,8 @@ fn from_prefix(token: &Token) -> PResult<(Ps, Prec)> {
         TKind::Use => (Ps::Use, Prec::Max),
 
         TKind::Pub => (Ps::Op(Op::Pub), Prec::Body),
+        TKind::Const => (Ps::Op(Op::Const), Prec::Body),
+        TKind::Static => (Ps::Op(Op::Static), Prec::Body),
         TKind::For => (Ps::For, Prec::Body),
         TKind::Match => (Ps::Op(Op::Match), Prec::Body),
         TKind::Macro => (Ps::Op(Op::Macro), Prec::Assign),
@@ -109,8 +111,6 @@ fn from_prefix(token: &Token) -> PResult<(Ps, Prec)> {
         | TKind::Mod
         | TKind::Impl
         | TKind::Let
-        | TKind::Const
-        | TKind::Static
         | TKind::Type
         | TKind::Struct
         | TKind::Enum => (Ps::Def, Prec::Body),
@@ -440,8 +440,6 @@ fn from_bind(p: &mut Parser<'_>) -> PResult<(BindOp, PPrec, Option<TKind>, Optio
     let bk = match p.peek()?.kind {
         // Token            Operator        Pat prec      Body Token             Body prec            Else prec
         TKind::Let =>    (BindOp::Let,    PPrec::Tuple, Some(TKind::Eq),       Some(Prec::Tuple),  Some(Prec::Body)),
-        TKind::Const =>  (BindOp::Const,  PPrec::Tuple, Some(TKind::Eq),       Some(Prec::Tuple),  None),
-        TKind::Static => (BindOp::Static, PPrec::Tuple, Some(TKind::Eq),       Some(Prec::Tuple),  None),
         TKind::Type =>   (BindOp::Type,   PPrec::Tuple, Some(TKind::Eq),       Some(Prec::Extend), None),
         TKind::Struct => (BindOp::Struct, PPrec::Tuple, None,                  None,               None),
         TKind::Enum =>   (BindOp::Enum,   PPrec::Tuple, None,                  None,               None),