Rename directories for some crates from `syntax_x` to `rustc_x`

`syntax_expand` -> `rustc_expand`
`syntax_pos` -> `rustc_span`
`syntax_ext` -> `rustc_builtin_macros`

1 files changed, 0 insertions, 83 deletions

diff --git a/src/libsyntax_ext/deriving/default.rs b/src/libsyntax_ext/deriving/default.rs
deleted file mode 100644
index d623e1fa4cc..00000000000
--- a/src/libsyntax_ext/deriving/default.rs
+++ /dev/null
@@ -1,83 +0,0 @@
-use crate::deriving::generic::ty::*;
-use crate::deriving::generic::*;
-use crate::deriving::path_std;
-
-use syntax::ast::{Expr, MetaItem};
-use syntax::ptr::P;
-use syntax::span_err;
-use syntax::symbol::{kw, sym};
-use syntax_expand::base::{Annotatable, DummyResult, ExtCtxt};
-use syntax_pos::Span;
-
-use rustc_error_codes::*;
-
-pub fn expand_deriving_default(
-    cx: &mut ExtCtxt<'_>,
-    span: Span,
-    mitem: &MetaItem,
-    item: &Annotatable,
-    push: &mut dyn FnMut(Annotatable),
-) {
-    let inline = cx.meta_word(span, sym::inline);
-    let attrs = vec![cx.attribute(inline)];
-    let trait_def = TraitDef {
-        span,
-        attributes: Vec::new(),
-        path: path_std!(cx, default::Default),
-        additional_bounds: Vec::new(),
-        generics: LifetimeBounds::empty(),
-        is_unsafe: false,
-        supports_unions: false,
-        methods: vec![MethodDef {
-            name: "default",
-            generics: LifetimeBounds::empty(),
-            explicit_self: None,
-            args: Vec::new(),
-            ret_ty: Self_,
-            attributes: attrs,
-            is_unsafe: false,
-            unify_fieldless_variants: false,
-            combine_substructure: combine_substructure(Box::new(|a, b, c| {
-                default_substructure(a, b, c)
-            })),
-        }],
-        associated_types: Vec::new(),
-    };
-    trait_def.expand(cx, mitem, item, push)
-}
-
-fn default_substructure(
-    cx: &mut ExtCtxt<'_>,
-    trait_span: Span,
-    substr: &Substructure<'_>,
-) -> P<Expr> {
-    // Note that `kw::Default` is "default" and `sym::Default` is "Default"!
-    let default_ident = cx.std_path(&[kw::Default, sym::Default, kw::Default]);
-    let default_call = |span| cx.expr_call_global(span, default_ident.clone(), Vec::new());
-
-    return match *substr.fields {
-        StaticStruct(_, ref summary) => match *summary {
-            Unnamed(ref fields, is_tuple) => {
-                if !is_tuple {
-                    cx.expr_ident(trait_span, substr.type_ident)
-                } else {
-                    let exprs = fields.iter().map(|sp| default_call(*sp)).collect();
-                    cx.expr_call_ident(trait_span, substr.type_ident, exprs)
-                }
-            }
-            Named(ref fields) => {
-                let default_fields = fields
-                    .iter()
-                    .map(|&(ident, span)| cx.field_imm(span, ident, default_call(span)))
-                    .collect();
-                cx.expr_struct_ident(trait_span, substr.type_ident, default_fields)
-            }
-        },
-        StaticEnum(..) => {
-            span_err!(cx, trait_span, E0665, "`Default` cannot be derived for enums, only structs");
-            // let compilation continue
-            DummyResult::raw_expr(trait_span, true)
-        }
-        _ => cx.span_bug(trait_span, "method in `derive(Default)`"),
-    };
-}