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use ast::{Item, MetaItem, MetaList, MetaNameValue, MetaWord};
use ext::base::ExtCtxt;
use codemap::Span;
use ptr::P;
macro_rules! pathvec {
($($x:ident)::+) => (
vec![ $( stringify!($x) ),+ ]
)
}
macro_rules! path {
($($x:tt)*) => (
::ext::deriving::generic::ty::Path::new( pathvec!( $($x)* ) )
)
}
macro_rules! pathvec_std {
($cx:expr, $first:ident :: $($rest:ident)::+) => (
if $cx.use_std {
pathvec!(std :: $($rest)::+)
} else {
pathvec!($first :: $($rest)::+)
}
)
}
macro_rules! path_std {
($($x:tt)*) => (
::ext::deriving::generic::ty::Path::new( pathvec_std!( $($x)* ) )
)
}
pub mod bounds;
pub mod clone;
pub mod encodable;
pub mod decodable;
pub mod hash;
pub mod rand;
pub mod show;
pub mod default;
pub mod primitive;
#[path="cmp/eq.rs"]
pub mod eq;
#[path="cmp/totaleq.rs"]
pub mod totaleq;
#[path="cmp/ord.rs"]
pub mod ord;
#[path="cmp/totalord.rs"]
pub mod totalord;
pub mod generic;
pub fn expand_deprecated_deriving(cx: &mut ExtCtxt,
span: Span,
_: &MetaItem,
_: &Item,
_: &mut FnMut(P<Item>)) {
cx.span_err(span, "`deriving` has been renamed to `derive`");
}
pub fn expand_meta_derive(cx: &mut ExtCtxt,
_span: Span,
mitem: &MetaItem,
item: &Item,
push: &mut FnMut(P<Item>)) {
match mitem.node {
MetaNameValue(_, ref l) => {
cx.span_err(l.span, "unexpected value in `derive`");
}
MetaWord(_) => {
cx.span_warn(mitem.span, "empty trait list in `derive`");
}
MetaList(_, ref titems) if titems.len() == 0 => {
cx.span_warn(mitem.span, "empty trait list in `derive`");
}
MetaList(_, ref titems) => {
for titem in titems.iter().rev() {
match titem.node {
MetaNameValue(ref tname, _) |
MetaList(ref tname, _) |
MetaWord(ref tname) => {
macro_rules! expand {
($func:path) => ($func(cx, titem.span, &**titem, item,
|i| push(i)))
}
match &tname[..] {
"Clone" => expand!(clone::expand_deriving_clone),
"Hash" => expand!(hash::expand_deriving_hash),
"RustcEncodable" => {
expand!(encodable::expand_deriving_rustc_encodable)
}
"RustcDecodable" => {
expand!(decodable::expand_deriving_rustc_decodable)
}
"Encodable" => {
cx.span_warn(titem.span,
"derive(Encodable) is deprecated \
in favor of derive(RustcEncodable)");
expand!(encodable::expand_deriving_encodable)
}
"Decodable" => {
cx.span_warn(titem.span,
"derive(Decodable) is deprecated \
in favor of derive(RustcDecodable)");
expand!(decodable::expand_deriving_decodable)
}
"PartialEq" => expand!(eq::expand_deriving_eq),
"Eq" => expand!(totaleq::expand_deriving_totaleq),
"PartialOrd" => expand!(ord::expand_deriving_ord),
"Ord" => expand!(totalord::expand_deriving_totalord),
"Rand" => expand!(rand::expand_deriving_rand),
"Show" => {
cx.span_warn(titem.span,
"derive(Show) is deprecated \
in favor of derive(Debug)");
expand!(show::expand_deriving_show)
},
"Debug" => expand!(show::expand_deriving_show),
"Default" => expand!(default::expand_deriving_default),
"FromPrimitive" => expand!(primitive::expand_deriving_from_primitive),
"Send" => expand!(bounds::expand_deriving_bound),
"Sync" => expand!(bounds::expand_deriving_bound),
"Copy" => expand!(bounds::expand_deriving_bound),
ref tname => {
cx.span_err(titem.span,
&format!("unknown `derive` \
trait: `{}`",
*tname)[]);
}
};
}
}
}
}
}
}
