Rollup merge of #65465 - Centril:split-syntax-1, r=petrochenkov

Move syntax::ext to a syntax_expand and refactor some attribute logic

Part of https://github.com/rust-lang/rust/pull/65324.

r? @petrochenkov

1 files changed, 0 insertions, 75 deletions

diff --git a/src/libsyntax/ext/allocator.rs b/src/libsyntax/ext/allocator.rs
deleted file mode 100644
index 99aeb5414c5..00000000000
--- a/src/libsyntax/ext/allocator.rs
+++ /dev/null
@@ -1,75 +0,0 @@
-use crate::{ast, attr, visit};
-use crate::symbol::{sym, Symbol};
-use syntax_pos::Span;
-
-#[derive(Clone, Copy)]
-pub enum AllocatorKind {
-    Global,
-    DefaultLib,
-    DefaultExe,
-}
-
-impl AllocatorKind {
-    pub fn fn_name(&self, base: &str) -> String {
-        match *self {
-            AllocatorKind::Global => format!("__rg_{}", base),
-            AllocatorKind::DefaultLib => format!("__rdl_{}", base),
-            AllocatorKind::DefaultExe => format!("__rde_{}", base),
-        }
-    }
-}
-
-pub enum AllocatorTy {
-    Layout,
-    Ptr,
-    ResultPtr,
-    Unit,
-    Usize,
-}
-
-pub struct AllocatorMethod {
-    pub name: &'static str,
-    pub inputs: &'static [AllocatorTy],
-    pub output: AllocatorTy,
-}
-
-pub static ALLOCATOR_METHODS: &[AllocatorMethod] = &[
-    AllocatorMethod {
-        name: "alloc",
-        inputs: &[AllocatorTy::Layout],
-        output: AllocatorTy::ResultPtr,
-    },
-    AllocatorMethod {
-        name: "dealloc",
-        inputs: &[AllocatorTy::Ptr, AllocatorTy::Layout],
-        output: AllocatorTy::Unit,
-    },
-    AllocatorMethod {
-        name: "realloc",
-        inputs: &[AllocatorTy::Ptr, AllocatorTy::Layout, AllocatorTy::Usize],
-        output: AllocatorTy::ResultPtr,
-    },
-    AllocatorMethod {
-        name: "alloc_zeroed",
-        inputs: &[AllocatorTy::Layout],
-        output: AllocatorTy::ResultPtr,
-    },
-];
-
-pub fn global_allocator_spans(krate: &ast::Crate) -> Vec<Span> {
-    struct Finder { name: Symbol, spans: Vec<Span> }
-    impl<'ast> visit::Visitor<'ast> for Finder {
-        fn visit_item(&mut self, item: &'ast ast::Item) {
-            if item.ident.name == self.name &&
-               attr::contains_name(&item.attrs, sym::rustc_std_internal_symbol) {
-                self.spans.push(item.span);
-            }
-            visit::walk_item(self, item)
-        }
-    }
-
-    let name = Symbol::intern(&AllocatorKind::Global.fn_name("alloc"));
-    let mut f = Finder { name, spans: Vec::new() };
-    visit::walk_crate(&mut f, krate);
-    f.spans
-}