gccrs: Refactor expression hir lowering into cc file

gcc/rust/ChangeLog:

	* Make-lang.in: Add new object file for expression lowering.
	* ast/rust-expr.h: Move implementation of expr lowering to source file.
	* backend/rust-compile-block.h: Likewise.
	* backend/rust-compile-expr.cc (CompileExpr::visit): Likewise.
	* backend/rust-compile-expr.h: Likewise.
	* checks/errors/privacy/rust-privacy-reporter.cc (PrivacyReporter::visit): Likewise.
	* checks/errors/privacy/rust-privacy-reporter.h: Likewise.
	* checks/errors/rust-const-checker.cc (ConstChecker::visit): Likewise.
	* checks/errors/rust-const-checker.h: Likewise.
	* checks/errors/rust-unsafe-checker.cc (UnsafeChecker::visit): Likewise.
	* checks/errors/rust-unsafe-checker.h: Likewise.
	* hir/rust-ast-lower-base.h: Likewise.
	* hir/rust-ast-lower-expr.h (RUST_AST_LOWER_EXPR): Likewise.
	* hir/rust-ast-lower.cc (ASTLoweringBase::lower_closure_param): Likewise.
	* hir/rust-hir-dump.cc (Dump::visit): Likewise.
	* hir/rust-hir-dump.h: Likewise.
	* hir/tree/rust-hir-expr.h (class ClosureExpr): Likewise.
	(class ClosureExprInner): Likewise.
	(class ClosureExprInnerTyped): Likewise.
	* hir/tree/rust-hir-full-decls.h (class ClosureExprInner): Likewise.
	(class ClosureExprInnerTyped): Likewise.
	* hir/tree/rust-hir-full-test.cc (ClosureExprInnerTyped::as_string): Likewise.
	(ClosureExprInner::as_string): Likewise.
	(ClosureExprInner::accept_vis): Likewise.
	(ClosureExpr::accept_vis): Likewise.
	(ClosureExprInnerTyped::accept_vis): Likewise.
	* hir/tree/rust-hir-visitor.h: Likewise.
	* hir/tree/rust-hir.h (class Expr): Likewise.
	* typecheck/rust-hir-type-check-expr.cc (TypeCheckExpr::visit): Likewise.
	* typecheck/rust-hir-type-check-expr.h: Likewise.
	* hir/rust-ast-lower-expr.cc: New file.

1 files changed, 4 insertions, 33 deletions

diff --git a/gcc/rust/hir/tree/rust-hir-full-test.cc b/gcc/rust/hir/tree/rust-hir-full-test.cc
index 48af16a..f6e27b9 100644
--- a/gcc/rust/hir/tree/rust-hir-full-test.cc
+++ b/gcc/rust/hir/tree/rust-hir-full-test.cc
@@ -1133,15 +1133,8 @@ ClosureExpr::as_string () const
 	}
     }
 
-  return str;
-}
-
-std::string
-ClosureExprInnerTyped::as_string () const
-{
-  std::string str = ClosureExpr::as_string ();
-
-  str += "\n Return type: " + return_type->as_string ();
+  str += "\n Return type: "
+	 + (has_return_type () ? return_type->as_string () : "none");
 
   str += "\n Body: " + expr->as_string ();
 
@@ -1516,16 +1509,6 @@ UnsafeBlockExpr::as_string () const
 }
 
 std::string
-ClosureExprInner::as_string () const
-{
-  std::string str = ClosureExpr::as_string ();
-
-  str += "\n Expression: " + closure_inner->as_string ();
-
-  return str;
-}
-
-std::string
 IfExpr::as_string () const
 {
   std::string str ("IfExpr: ");
@@ -4038,7 +4021,7 @@ FieldAccessExpr::accept_vis (HIRFullVisitor &vis)
 }
 
 void
-ClosureExprInner::accept_vis (HIRFullVisitor &vis)
+ClosureExpr::accept_vis (HIRFullVisitor &vis)
 {
   vis.visit (*this);
 }
@@ -4050,12 +4033,6 @@ BlockExpr::accept_vis (HIRFullVisitor &vis)
 }
 
 void
-ClosureExprInnerTyped::accept_vis (HIRFullVisitor &vis)
-{
-  vis.visit (*this);
-}
-
-void
 ContinueExpr::accept_vis (HIRFullVisitor &vis)
 {
   vis.visit (*this);
@@ -4986,7 +4963,7 @@ IfExpr::accept_vis (HIRExpressionVisitor &vis)
 }
 
 void
-ClosureExprInner::accept_vis (HIRExpressionVisitor &vis)
+ClosureExpr::accept_vis (HIRExpressionVisitor &vis)
 {
   vis.visit (*this);
 }
@@ -5076,12 +5053,6 @@ QualifiedPathInExpression::accept_vis (HIRPatternVisitor &vis)
 }
 
 void
-ClosureExprInnerTyped::accept_vis (HIRExpressionVisitor &vis)
-{
-  vis.visit (*this);
-}
-
-void
 ExprStmtWithBlock::accept_vis (HIRStmtVisitor &vis)
 {
   vis.visit (*this);