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Move impls for qpath recovery trait from ast.rs

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This commit is contained in:
Vadim Petrochenkov 2017-12-18 23:26:59 +03:00
parent 81622c6b02
commit 9a68098e87
2 changed files with 65 additions and 58 deletions
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42
src/libsyntax/parse/parser.rs
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@ -169,11 +169,49 @@ enum PrevTokenKind {
Other,
}
pub(crate) trait RecoverQPath: Sized {
trait RecoverQPath: Sized {
const PATH_STYLE: PathStyle = PathStyle::Expr;
fn to_ty(&self) -> Option<P<Ty>>;
fn to_recovered(&self, qself: Option<QSelf>, path: ast::Path) -> Self;
fn to_string(&self) -> String;
const PATH_STYLE: PathStyle = PathStyle::Expr;
}
impl RecoverQPath for Ty {
const PATH_STYLE: PathStyle = PathStyle::Type;
fn to_ty(&self) -> Option<P<Ty>> {
Some(P(self.clone()))
}
fn to_recovered(&self, qself: Option<QSelf>, path: ast::Path) -> Self {
Self { span: path.span, node: TyKind::Path(qself, path), id: self.id }
}
fn to_string(&self) -> String {
pprust::ty_to_string(self)
}
}
impl RecoverQPath for Pat {
fn to_ty(&self) -> Option<P<Ty>> {
self.to_ty()
}
fn to_recovered(&self, qself: Option<QSelf>, path: ast::Path) -> Self {
Self { span: path.span, node: PatKind::Path(qself, path), id: self.id }
}
fn to_string(&self) -> String {
pprust::pat_to_string(self)
}
}
impl RecoverQPath for Expr {
fn to_ty(&self) -> Option<P<Ty>> {
self.to_ty()
}
fn to_recovered(&self, qself: Option<QSelf>, path: ast::Path) -> Self {
Self { span: path.span, node: ExprKind::Path(qself, path),
id: self.id, attrs: self.attrs.clone() }
}
fn to_string(&self) -> String {
pprust::expr_to_string(self)
}
}
/* ident is handled by common.rs */