gccrs: 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>

6 files changed, 0 insertions, 116 deletions

diff --git a/gcc/rust/ast/rust-ast-collector.cc b/gcc/rust/ast/rust-ast-collector.cc
index 744d0eb..eb03dcc 100644
--- a/gcc/rust/ast/rust-ast-collector.cc
+++ b/gcc/rust/ast/rust-ast-collector.cc
@@ -2085,31 +2085,6 @@ TokenCollector::visit (ExternalStaticItem &item)
 }
 
 void
-TokenCollector::visit (ExternalFunctionItem &function)
-{
-  visit_items_as_lines (function.get_outer_attrs ());
-  visit (function.get_visibility ());
-
-  auto id = function.get_identifier ().as_string ();
-
-  push (Rust::Token::make (FN_KW, function.get_locus ()));
-  push (Rust::Token::make_identifier (UNDEF_LOCATION, std::move (id)));
-  if (function.has_generics ())
-    visit (function.get_generic_params ());
-  push (Rust::Token::make (LEFT_PAREN, UNDEF_LOCATION));
-
-  visit_items_joined_by_separator (function.get_function_params ());
-
-  push (Rust::Token::make (RIGHT_PAREN, UNDEF_LOCATION));
-  if (function.has_return_type ())
-    {
-      push (Rust::Token::make (RETURN_TYPE, UNDEF_LOCATION));
-      visit (function.get_return_type ());
-    }
-  push (Rust::Token::make (SEMICOLON, UNDEF_LOCATION));
-}
-
-void
 TokenCollector::visit (ExternBlock &block)
 {
   visit_items_as_lines (block.get_outer_attrs ());
diff --git a/gcc/rust/ast/rust-ast-collector.h b/gcc/rust/ast/rust-ast-collector.h
index ec695ef..fdc99bb 100644
--- a/gcc/rust/ast/rust-ast-collector.h
+++ b/gcc/rust/ast/rust-ast-collector.h
@@ -333,7 +333,6 @@ public:
   void visit (TraitImpl &impl);
   void visit (ExternalTypeItem &item);
   void visit (ExternalStaticItem &item);
-  void visit (ExternalFunctionItem &item);
   void visit (ExternBlock &block);
 
   // rust-macro.h
diff --git a/gcc/rust/ast/rust-ast-full-decls.h b/gcc/rust/ast/rust-ast-full-decls.h
index 8d5c8db..dd982c4 100644
--- a/gcc/rust/ast/rust-ast-full-decls.h
+++ b/gcc/rust/ast/rust-ast-full-decls.h
@@ -203,7 +203,6 @@ class ExternalItem;
 class ExternalTypeItem;
 class ExternalStaticItem;
 class NamedFunctionParam;
-class ExternalFunctionItem;
 class ExternBlock;
 
 // rust-macro.h
diff --git a/gcc/rust/ast/rust-ast-visitor.cc b/gcc/rust/ast/rust-ast-visitor.cc
index 697c272..de4242a 100644
--- a/gcc/rust/ast/rust-ast-visitor.cc
+++ b/gcc/rust/ast/rust-ast-visitor.cc
@@ -1005,24 +1005,6 @@ DefaultASTVisitor::visit (AST::NamedFunctionParam &param)
 }
 
 void
-DefaultASTVisitor::visit (AST::ExternalFunctionItem &item)
-{
-  visit_outer_attrs (item);
-  visit (item.get_visibility ());
-  for (auto &generic : item.get_generic_params ())
-    visit (generic);
-
-  if (item.has_where_clause ())
-    visit (item.get_where_clause ());
-
-  for (auto &param : item.get_function_params ())
-    visit (param);
-
-  if (item.has_return_type ())
-    visit (item.get_return_type ());
-}
-
-void
 DefaultASTVisitor::visit (AST::ExternBlock &block)
 {
   visit_outer_attrs (block);
diff --git a/gcc/rust/ast/rust-ast-visitor.h b/gcc/rust/ast/rust-ast-visitor.h
index c5c9a02..622e7f7 100644
--- a/gcc/rust/ast/rust-ast-visitor.h
+++ b/gcc/rust/ast/rust-ast-visitor.h
@@ -164,7 +164,6 @@ public:
   // virtual void visit(ExternalItem& item) = 0;
   virtual void visit (ExternalTypeItem &type) = 0;
   virtual void visit (ExternalStaticItem &item) = 0;
-  virtual void visit (ExternalFunctionItem &item) = 0;
   virtual void visit (ExternBlock &block) = 0;
 
   // rust-macro.h
@@ -338,7 +337,6 @@ protected:
   virtual void visit (AST::TraitImpl &impl) override;
   virtual void visit (AST::ExternalTypeItem &item) override;
   virtual void visit (AST::ExternalStaticItem &item) override;
-  virtual void visit (AST::ExternalFunctionItem &item) override;
   virtual void visit (AST::ExternBlock &block) override;
   virtual void visit (AST::MacroMatchFragment &match) override;
   virtual void visit (AST::MacroMatchRepetition &match) override;
diff --git a/gcc/rust/ast/rust-ast.cc b/gcc/rust/ast/rust-ast.cc
index 5d66198..6eb3394 100644
--- a/gcc/rust/ast/rust-ast.cc
+++ b/gcc/rust/ast/rust-ast.cc
@@ -2975,69 +2975,6 @@ ExternalStaticItem::as_string () const
 }
 
 std::string
-ExternalFunctionItem::as_string () const
-{
-  // outer attributes
-  std::string str = append_attributes (outer_attrs, OUTER);
-
-  // start visibility on new line and with a space
-  str += "\n" + visibility.as_string () + " ";
-
-  str += "fn ";
-
-  // add name
-  str += item_name.as_string ();
-
-  // generic params
-  str += "\n Generic params: ";
-  if (generic_params.empty ())
-    {
-      str += "none";
-    }
-  else
-    {
-      for (const auto &param : generic_params)
-	{
-	  // DEBUG: null pointer check
-	  if (param == nullptr)
-	    {
-	      rust_debug (
-		"something really terrible has gone wrong - null pointer "
-		"generic param in external function item.");
-	      return "NULL_POINTER_MARK";
-	    }
-
-	  str += "\n  " + param->as_string ();
-	}
-    }
-
-  // function params
-  str += "\n Function params: ";
-  if (function_params.empty ())
-    {
-      str += "none";
-    }
-  else
-    {
-      for (const auto &param : function_params)
-	str += "\n  " + param.as_string ();
-    }
-
-  // add type on new line
-  str += "\n (return) Type: "
-	 + (has_return_type () ? return_type->as_string () : "()");
-
-  // where clause
-  str += "\n Where clause: ";
-  if (has_where_clause ())
-    str += where_clause.as_string ();
-  else
-    str += "none";
-
-  return str;
-}
-
-std::string
 NamedFunctionParam::as_string () const
 {
   std::string str = append_attributes (outer_attrs, OUTER);
@@ -4867,12 +4804,6 @@ ExternalStaticItem::accept_vis (ASTVisitor &vis)
 }
 
 void
-ExternalFunctionItem::accept_vis (ASTVisitor &vis)
-{
-  vis.visit (*this);
-}
-
-void
 ExternBlock::accept_vis (ASTVisitor &vis)
 {
   vis.visit (*this);