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Fake up #![no_std] on pretty-printing; keep it out of AST

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This commit is contained in:
Keegan McAllister 2015-02-05 17:04:11 -08:00
parent d788588dce
commit a246b6542a
2 changed files with 22 additions and 14 deletions
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13
src/libsyntax/std_inject.rs
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@ -69,9 +69,6 @@ impl<'a> fold::Folder for StandardLibraryInjector<'a> {
span: DUMMY_SP
}));
// don't add #![no_std] here, that will block the prelude injection later.
// Add it during the prelude injection instead.
krate
}
}
@ -87,16 +84,6 @@ struct PreludeInjector<'a>;
impl<'a> fold::Folder for PreludeInjector<'a> {
fn fold_crate(&mut self, mut krate: ast::Crate) -> ast::Crate {
// Add #![no_std] here, so we don't re-inject when compiling pretty-printed source.
// This must happen here and not in StandardLibraryInjector because this
// fold happens second.
let no_std_attr = attr::mk_attr_inner(attr::mk_attr_id(),
attr::mk_word_item(InternedString::new("no_std")));
// std_inject runs after feature checking so manually mark this attr
attr::mark_used(&no_std_attr);
krate.attrs.push(no_std_attr);
// only add `use std::prelude::*;` if there wasn't a
// `#![no_implicit_prelude]` at the crate level.
// fold_mod() will insert glob path.