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Lazify some mac_placeholder() calls.

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This avoids some unnecessary creation of empty token streams.
This commit is contained in:
Nicholas Nethercote 2019-10-10 12:55:39 +11:00
parent 1ce0347fd4
commit 18b48bf4b9
1 changed files with 7 additions and 7 deletions
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14
src/libsyntax/ext/placeholders.rs
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@ -32,12 +32,12 @@ pub fn placeholder(kind: AstFragmentKind, id: ast::NodeId) -> AstFragment {
attrs: ThinVec::new(),
kind: ast::ExprKind::Mac(mac_placeholder()),
});
let ty = P(ast::Ty {
let ty = || P(ast::Ty {
id,
kind: ast::TyKind::Mac(mac_placeholder()),
span,
});
let pat = P(ast::Pat {
let pat = || P(ast::Pat {
id,
kind: ast::PatKind::Mac(mac_placeholder()),
span,
@ -83,7 +83,7 @@ pub fn placeholder(kind: AstFragmentKind, id: ast::NodeId) -> AstFragment {
body: expr_placeholder(),
guard: None,
id,
pat,
pat: pat(),
span,
is_placeholder: true,
}
@ -105,7 +105,7 @@ pub fn placeholder(kind: AstFragmentKind, id: ast::NodeId) -> AstFragment {
id,
ident,
is_shorthand: false,
pat,
pat: pat(),
span,
is_placeholder: true,
}
@ -124,9 +124,9 @@ pub fn placeholder(kind: AstFragmentKind, id: ast::NodeId) -> AstFragment {
ast::Param {
attrs: Default::default(),
id,
pat,
pat: pat(),
span,
ty,
ty: ty(),
is_placeholder: true,
}
]),
@ -136,7 +136,7 @@ pub fn placeholder(kind: AstFragmentKind, id: ast::NodeId) -> AstFragment {
id,
ident: None,
span,
ty,
ty: ty(),
vis,
is_placeholder: true,
}