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Inject the compiler_builtins crate whenever the core crate is injected

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This commit is contained in:
Oliver Schneider 2018-03-30 13:06:34 +02:00
parent ee1014e505
commit 679657b863
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GPG key ID: 1D5CB4FC597C3004
18 changed files with 57 additions and 16 deletions
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41
src/libsyntax/std_inject.rs
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@ -44,27 +44,38 @@ thread_local! {
}
pub fn maybe_inject_crates_ref(mut krate: ast::Crate, alt_std_name: Option<&str>) -> ast::Crate {
let name = if attr::contains_name(&krate.attrs, "no_core") {
// the first name in this list is the crate name of the crate with the prelude
let names: &[&str] = if attr::contains_name(&krate.attrs, "no_core") {
return krate;
} else if attr::contains_name(&krate.attrs, "no_std") {
"core"
if attr::contains_name(&krate.attrs, "compiler_builtins") {
&["core"]
} else {
&["core", "compiler_builtins"]
}
} else {
"std"
&["std"]
};
INJECTED_CRATE_NAME.with(|opt_name| opt_name.set(Some(name)));
for name in names {
krate.module.items.insert(0, P(ast::Item {
attrs: vec![attr::mk_attr_outer(DUMMY_SP,
attr::mk_attr_id(),
attr::mk_word_item(ast::Ident::from_str("macro_use")))],
vis: dummy_spanned(ast::VisibilityKind::Inherited),
node: ast::ItemKind::ExternCrate(alt_std_name.map(Symbol::intern)),
ident: ast::Ident::from_str(name),
id: ast::DUMMY_NODE_ID,
span: DUMMY_SP,
tokens: None,
}));
}
krate.module.items.insert(0, P(ast::Item {
attrs: vec![attr::mk_attr_outer(DUMMY_SP,
attr::mk_attr_id(),
attr::mk_word_item(ast::Ident::from_str("macro_use")))],
vis: dummy_spanned(ast::VisibilityKind::Inherited),
node: ast::ItemKind::ExternCrate(alt_std_name.map(Symbol::intern)),
ident: ast::Ident::from_str(name),
id: ast::DUMMY_NODE_ID,
span: DUMMY_SP,
tokens: None,
}));
// the crates have been injected, the assumption is that the first one is the one with
// the prelude.
let name = names[0];
INJECTED_CRATE_NAME.with(|opt_name| opt_name.set(Some(name)));
let span = ignored_span(DUMMY_SP);
krate.module.items.insert(0, P(ast::Item {