bjoernager/rust
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Desugar while let into loop { match { ... } }

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This commit is contained in:
John Gallagher 2014-10-02 23:28:15 -04:00
parent 0c2c8116a3
commit b003f10449
2 changed files with 10 additions and 1 deletions
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8
src/libsyntax/ext/build.rs
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@ -147,6 +147,8 @@ pub trait AstBuilder {
fn expr_some(&self, sp: Span, expr: P<ast::Expr>) -> P<ast::Expr>;
fn expr_none(&self, sp: Span) -> P<ast::Expr>;
fn expr_break(&self, sp: Span) -> P<ast::Expr>;
fn expr_tuple(&self, sp: Span, exprs: Vec<P<ast::Expr>>) -> P<ast::Expr>;
fn expr_fail(&self, span: Span, msg: InternedString) -> P<ast::Expr>;
@ -688,6 +690,12 @@ impl<'a> AstBuilder for ExtCtxt<'a> {
self.expr_path(none)
}
fn expr_break(&self, sp: Span) -> P<ast::Expr> {
self.expr(sp, ast::ExprBreak(None))
}
fn expr_tuple(&self, sp: Span, exprs: Vec<P<ast::Expr>>) -> P<ast::Expr> {
self.expr(sp, ast::ExprTup(exprs))
}