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syntax: add syntax extension helper to make simple view items

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This commit is contained in:
Erick Tryzelaar 2014-02-15 22:10:16 -08:00
parent bb8721da69
commit 0135b521ad
1 changed files with 17 additions and 0 deletions
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17
src/libsyntax/ext/build.rs
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@ -242,6 +242,9 @@ pub trait AstBuilder {
fn view_use(&self, sp: Span,
vis: ast::Visibility, vp: ~[@ast::ViewPath]) -> ast::ViewItem;
fn view_use_simple(&self, sp: Span, vis: ast::Visibility, path: ast::Path) -> ast::ViewItem;
fn view_use_simple_(&self, sp: Span, vis: ast::Visibility,
ident: ast::Ident, path: ast::Path) -> ast::ViewItem;
fn view_use_list(&self, sp: Span, vis: ast::Visibility,
path: ~[ast::Ident], imports: &[ast::Ident]) -> ast::ViewItem;
fn view_use_glob(&self, sp: Span,
@ -900,6 +903,20 @@ impl<'a> AstBuilder for ExtCtxt<'a> {
}
}
fn view_use_simple(&self, sp: Span, vis: ast::Visibility, path: ast::Path) -> ast::ViewItem {
let last = path.segments.last().unwrap().identifier;
self.view_use_simple_(sp, vis, last, path)
}
fn view_use_simple_(&self, sp: Span, vis: ast::Visibility,
ident: ast::Ident, path: ast::Path) -> ast::ViewItem {
self.view_use(sp, vis,
~[@respan(sp,
ast::ViewPathSimple(ident,
path,
ast::DUMMY_NODE_ID))])
}
fn view_use_list(&self, sp: Span, vis: ast::Visibility,
path: ~[ast::Ident], imports: &[ast::Ident]) -> ast::ViewItem {
let imports = imports.map(|id| {