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review feedback: common-subexpression-elim across functions in pushpop_safe impl.

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This commit is contained in:
Felix S. Klock II 2015-07-23 16:22:05 +02:00
parent 44bb0dd4a3
commit 2d68d09b46
1 changed files with 4 additions and 4 deletions
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8
src/libsyntax/ext/pushpop_safe.rs
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@ -48,24 +48,24 @@ enum PushPop { Push, Pop }
pub fn expand_push_unsafe<'cx>(cx: &'cx mut ExtCtxt, sp: Span, tts: &[ast::TokenTree])
-> Box<base::MacResult+'cx> {
feature_gate::check_for_pushpop_syntax(
cx.ecfg.features, &cx.parse_sess.span_diagnostic, sp);
expand_pushpop_unsafe(cx, sp, tts, PushPop::Push)
}
pub fn expand_pop_unsafe<'cx>(cx: &'cx mut ExtCtxt, sp: Span, tts: &[ast::TokenTree])
-> Box<base::MacResult+'cx> {
feature_gate::check_for_pushpop_syntax(
cx.ecfg.features, &cx.parse_sess.span_diagnostic, sp);
expand_pushpop_unsafe(cx, sp, tts, PushPop::Pop)
}
fn expand_pushpop_unsafe<'cx>(cx: &'cx mut ExtCtxt, sp: Span, tts: &[ast::TokenTree],
pp: PushPop) -> Box<base::MacResult+'cx> {
feature_gate::check_for_pushpop_syntax(
cx.ecfg.features, &cx.parse_sess.span_diagnostic, sp);
let mut exprs = match get_exprs_from_tts(cx, sp, tts) {
Some(exprs) => exprs.into_iter(),
None => return DummyResult::expr(sp),
};
let expr = match (exprs.next(), exprs.next()) {
(Some(expr), None) => expr,
_ => {