Remove dead code associated with `AST::ExternalFunctionItem`

gcc/rust/ChangeLog:

	* ast/rust-ast-collector.cc (TokenCollector::visit):
	Remove dead code.
	* ast/rust-ast-collector.h: Likewise.
	* ast/rust-ast-full-decls.h (class ExternalFunctionItem):
	Likewise.
	* ast/rust-ast-visitor.cc (DefaultASTVisitor::visit):
	Likewise.
	* ast/rust-ast-visitor.h: Likewise.
	* ast/rust-ast.cc (ExternalFunctionItem::as_string): Likewise.
	(ExternalFunctionItem::accept_vis): Likewise.
	* checks/errors/rust-ast-validation.cc (ASTValidation::visit):
	Likewise.
	* checks/errors/rust-ast-validation.h: Likewise.
	* checks/errors/rust-feature-gate.h: Likewise.
	* expand/rust-cfg-strip.cc (CfgStrip::visit):
	Likewise.
	* expand/rust-cfg-strip.h: Likewise.
	* expand/rust-derive.h: Likewise.
	* expand/rust-expand-visitor.cc (ExpandVisitor::visit):
	Likewise.
	* expand/rust-expand-visitor.h: Likewise.
	* hir/rust-ast-lower-base.cc (ASTLoweringBase::visit):
	Likewise.
	* hir/rust-ast-lower-base.h: Likewise.
	* metadata/rust-export-metadata.cc (ExportContext::emit_function):
	Likewise.
	* parse/rust-parse-impl.h: Likewise.
	* parse/rust-parse.h: Likewise.
	* resolve/rust-ast-resolve-base.cc (ResolverBase::visit):
	Likewise.
	* resolve/rust-ast-resolve-base.h: Likewise.
	* resolve/rust-default-resolver.cc (DefaultResolver::visit):
	Likewise.
	* resolve/rust-default-resolver.h: Likewise.
	* util/rust-attributes.cc (AttributeChecker::visit): Likewise.
	* util/rust-attributes.h: Likewise.

gcc/testsuite/ChangeLog:

	* rust/compile/extern_func_with_body.rs: New test.

Signed-off-by: 0xn4utilus <gyanendrabanjare8@gmail.com>

2 files changed, 0 insertions, 64 deletions

diff --git a/gcc/rust/parse/rust-parse-impl.h b/gcc/rust/parse/rust-parse-impl.h
index 26b2415..b6c2ca3 100644
--- a/gcc/rust/parse/rust-parse-impl.h
+++ b/gcc/rust/parse/rust-parse-impl.h
@@ -6034,68 +6034,6 @@ Parser<ManagedTokenSource>::parse_named_function_params (
   return params;
 }
 
-template <typename ManagedTokenSource>
-std::unique_ptr<AST::ExternalFunctionItem>
-Parser<ManagedTokenSource>::parse_external_function_item (
-  AST::Visibility vis, AST::AttrVec outer_attrs)
-{
-  location_t locus = lexer.peek_token ()->get_locus ();
-
-  // parse extern function declaration item
-  // skip function token
-  lexer.skip_token ();
-
-  // parse identifier
-  const_TokenPtr ident_tok = expect_token (IDENTIFIER);
-  if (ident_tok == nullptr)
-    {
-      skip_after_semicolon ();
-      return nullptr;
-    }
-  Identifier ident{ident_tok};
-
-  // parse (optional) generic params
-  std::vector<std::unique_ptr<AST::GenericParam>> generic_params
-    = parse_generic_params_in_angles ();
-
-  if (!skip_token (LEFT_PAREN))
-    {
-      skip_after_semicolon ();
-      return nullptr;
-    }
-
-  // parse parameters
-  std::vector<AST::NamedFunctionParam> function_params
-    = parse_named_function_params (
-      [] (TokenId id) { return id == RIGHT_PAREN; });
-
-  if (!skip_token (RIGHT_PAREN))
-    {
-      skip_after_semicolon ();
-      return nullptr;
-    }
-
-  // parse (optional) return type
-  std::unique_ptr<AST::Type> return_type = parse_function_return_type ();
-
-  // parse (optional) where clause
-  AST::WhereClause where_clause = parse_where_clause ();
-
-  if (!skip_token (SEMICOLON))
-    {
-      // skip somewhere?
-      return nullptr;
-    }
-
-  function_params.shrink_to_fit ();
-
-  return std::unique_ptr<AST::ExternalFunctionItem> (
-    new AST::ExternalFunctionItem (
-      std::move (ident), std::move (generic_params), std::move (return_type),
-      std::move (where_clause), std::move (function_params), std::move (vis),
-      std::move (outer_attrs), locus));
-}
-
 // Parses a single extern block item (static or function declaration).
 template <typename ManagedTokenSource>
 std::unique_ptr<AST::ExternalItem>
diff --git a/gcc/rust/parse/rust-parse.h b/gcc/rust/parse/rust-parse.h
index cdddfa6..c00bf9c 100644
--- a/gcc/rust/parse/rust-parse.h
+++ b/gcc/rust/parse/rust-parse.h
@@ -310,8 +310,6 @@ private:
   AST::Lifetime lifetime_from_token (const_TokenPtr tok);
   std::unique_ptr<AST::ExternalTypeItem>
   parse_external_type_item (AST::Visibility vis, AST::AttrVec outer_attrs);
-  std::unique_ptr<AST::ExternalFunctionItem>
-  parse_external_function_item (AST::Visibility vis, AST::AttrVec outer_attrs);
   AST::NamedFunctionParam parse_named_function_param ();
   template <typename EndTokenPred>
   std::vector<AST::NamedFunctionParam>