mirror of
https://github.com/pezkuwichain/serde.git
synced 2026-04-24 21:37:57 +00:00
Joe Wilm
9985d2ebfc
Was previously nightly. This resulted in compilation error when the clippy feature was not enabled because the clippy crate could not be found.
81 lines
2.5 KiB
Rust
81 lines
2.5 KiB
Rust
#![cfg_attr(feature = "clippy", plugin(clippy))]
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#![cfg_attr(feature = "clippy", allow(used_underscore_binding))]
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#![cfg_attr(not(feature = "with-syntex"), feature(rustc_private, plugin))]
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#![cfg_attr(not(feature = "with-syntex"), plugin(quasi_macros))]
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extern crate aster;
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extern crate quasi;
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#[cfg(feature = "with-syntex")]
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extern crate syntex;
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#[cfg(feature = "with-syntex")]
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extern crate syntex_syntax as syntax;
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#[cfg(not(feature = "with-syntex"))]
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extern crate syntax;
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#[cfg(not(feature = "with-syntex"))]
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extern crate rustc_plugin;
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#[cfg(not(feature = "with-syntex"))]
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use syntax::feature_gate::AttributeType;
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#[cfg(feature = "with-syntex")]
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include!(concat!(env!("OUT_DIR"), "/lib.rs"));
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#[cfg(not(feature = "with-syntex"))]
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include!("lib.rs.in");
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#[cfg(feature = "with-syntex")]
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pub fn register(reg: &mut syntex::Registry) {
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use syntax::{ast, fold};
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reg.add_attr("feature(custom_derive)");
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reg.add_attr("feature(custom_attribute)");
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reg.add_decorator("derive_Serialize", ser::expand_derive_serialize);
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reg.add_decorator("derive_Deserialize", de::expand_derive_deserialize);
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reg.add_post_expansion_pass(strip_attributes);
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/// Strip the serde attributes from the crate.
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#[cfg(feature = "with-syntex")]
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fn strip_attributes(krate: ast::Crate) -> ast::Crate {
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/// Helper folder that strips the serde attributes after the extensions have been expanded.
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struct StripAttributeFolder;
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impl fold::Folder for StripAttributeFolder {
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fn fold_attribute(&mut self, attr: ast::Attribute) -> Option<ast::Attribute> {
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match attr.node.value.node {
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ast::MetaList(ref n, _) if n == &"serde" => { return None; }
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_ => {}
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}
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Some(attr)
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}
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fn fold_mac(&mut self, mac: ast::Mac) -> ast::Mac {
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fold::noop_fold_mac(mac, self)
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}
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}
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fold::Folder::fold_crate(&mut StripAttributeFolder, krate)
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}
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}
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#[cfg(not(feature = "with-syntex"))]
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pub fn register(reg: &mut rustc_plugin::Registry) {
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reg.register_syntax_extension(
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syntax::parse::token::intern("derive_Serialize"),
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syntax::ext::base::MultiDecorator(
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Box::new(ser::expand_derive_serialize)));
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reg.register_syntax_extension(
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syntax::parse::token::intern("derive_Deserialize"),
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syntax::ext::base::MultiDecorator(
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Box::new(de::expand_derive_deserialize)));
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reg.register_attribute("serde".to_owned(), AttributeType::Normal);
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}
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