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syntax_ext: Reuse built-in attribute template checking for macro attributes

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This commit is contained in:
Vadim Petrochenkov 2019-07-19 02:10:36 +03:00
parent 433024147a
commit 76b1ffaf6c
9 changed files with 132 additions and 113 deletions
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19
src/libsyntax_ext/global_allocator.rs
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@ -1,31 +1,22 @@
use errors::Applicability;
use syntax::ast::{self, Arg, Attribute, Expr, FnHeader, Generics, Ident, Item};
use syntax::ast::{ItemKind, Mutability, Ty, TyKind, Unsafety, VisibilityKind};
use syntax::source_map::respan;
use syntax::ast::{self, Arg, Attribute, Expr, FnHeader, Generics, Ident, Item};
use syntax::attr::check_builtin_macro_attribute;
use syntax::ext::allocator::{AllocatorKind, AllocatorMethod, AllocatorTy, ALLOCATOR_METHODS};
use syntax::ext::base::{Annotatable, ExtCtxt};
use syntax::ext::build::AstBuilder;
use syntax::ext::hygiene::SyntaxContext;
use syntax::ptr::P;
use syntax::source_map::respan;
use syntax::symbol::{kw, sym};
use syntax_pos::Span;
pub fn expand(
ecx: &mut ExtCtxt<'_>,
span: Span,
_span: Span,
meta_item: &ast::MetaItem,
item: Annotatable,
) -> Vec<Annotatable> {
if !meta_item.is_word() {
let msg = format!("malformed `{}` attribute input", meta_item.path);
ecx.parse_sess.span_diagnostic.struct_span_err(span, &msg)
.span_suggestion(
span,
"must be of the form",
format!("`#[{}]`", meta_item.path),
Applicability::MachineApplicable
).emit();
}
check_builtin_macro_attribute(ecx, meta_item, sym::global_allocator);
let not_static = |item: Annotatable| {
ecx.parse_sess.span_diagnostic.span_err(item.span(), "allocators must be statics");