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* [gcc r14-7639] gccrs: derive: Add #[derive(Copy)] builtin
@ 2024-01-16 17:49 Arthur Cohen
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From: Arthur Cohen @ 2024-01-16 17:49 UTC (permalink / raw)
To: gcc-cvs
https://gcc.gnu.org/g:e16397e9963212d8c47fd0cd51544ba373e32172
commit r14-7639-ge16397e9963212d8c47fd0cd51544ba373e32172
Author: Arthur Cohen <arthur.cohen@embecosm.com>
Date: Fri May 26 13:37:13 2023 +0200
gccrs: derive: Add #[derive(Copy)] builtin
gcc/rust/ChangeLog:
* Make-lang.in: Add new files.
* expand/rust-derive.cc (DeriveVisitor::derive): Call into DeriveCopy.
* expand/rust-derive-copy.cc: New file.
* expand/rust-derive-copy.h: New file.
Diff:
---
gcc/rust/Make-lang.in | 1 +
gcc/rust/expand/rust-derive-copy.cc | 80 +++++++++++++++++++++++++++++++++++++
gcc/rust/expand/rust-derive-copy.h | 56 ++++++++++++++++++++++++++
gcc/rust/expand/rust-derive.cc | 2 +
4 files changed, 139 insertions(+)
diff --git a/gcc/rust/Make-lang.in b/gcc/rust/Make-lang.in
index e708ac30a10..771c75f1432 100644
--- a/gcc/rust/Make-lang.in
+++ b/gcc/rust/Make-lang.in
@@ -90,6 +90,7 @@ GRS_OBJS = \
rust/rust-ast-builder.o \
rust/rust-derive.o \
rust/rust-derive-clone.o \
+ rust/rust-derive-copy.o \
rust/rust-macro-invoc-lexer.o \
rust/rust-macro-substitute-ctx.o \
rust/rust-macro-builtins.o \
diff --git a/gcc/rust/expand/rust-derive-copy.cc b/gcc/rust/expand/rust-derive-copy.cc
new file mode 100644
index 00000000000..d578849c06b
--- /dev/null
+++ b/gcc/rust/expand/rust-derive-copy.cc
@@ -0,0 +1,80 @@
+// Copyright (C) 2020-2023 Free Software Foundation, Inc.
+
+// This file is part of GCC.
+
+// GCC is free software; you can redistribute it and/or modify it under
+// the terms of the GNU General Public License as published by the Free
+// Software Foundation; either version 3, or (at your option) any later
+// version.
+
+// GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+// WARRANTY; without even the implied warranty of MERCHANTABILITY or
+// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+// for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with GCC; see the file COPYING3. If not see
+// <http://www.gnu.org/licenses/>.
+
+#include "rust-derive-copy.h"
+#include "rust-ast-full.h"
+
+namespace Rust {
+namespace AST {
+
+DeriveCopy::DeriveCopy (Location loc)
+ : loc (loc), builder (AstBuilder (loc)), expanded (nullptr)
+{}
+
+std::unique_ptr<AST::Item>
+DeriveCopy::go (Item &item)
+{
+ item.accept_vis (*this);
+
+ rust_assert (expanded);
+
+ return std::move (expanded);
+}
+
+std::unique_ptr<Item>
+DeriveCopy::copy_impl (std::string name)
+{
+ // `$crate::core::marker::Copy` instead
+ auto segments = std::vector<std::unique_ptr<TypePathSegment>> ();
+ segments.emplace_back (builder.type_path_segment ("Copy"));
+ auto copy = TypePath (std::move (segments), loc);
+
+ return std::unique_ptr<Item> (
+ new TraitImpl (copy, /* unsafe */ false,
+ /* exclam */ false, /* trait items */ {},
+ /* generics */ {}, builder.single_type_path (name),
+ WhereClause::create_empty (), Visibility::create_private (),
+ {}, {}, loc));
+}
+
+void
+DeriveCopy::visit_struct (StructStruct &item)
+{
+ expanded = copy_impl (item.get_struct_name ());
+}
+
+void
+DeriveCopy::visit_tuple (TupleStruct &item)
+{
+ expanded = copy_impl (item.get_struct_name ());
+}
+
+void
+DeriveCopy::visit_enum (Enum &item)
+{
+ expanded = copy_impl (item.get_identifier ());
+}
+
+void
+DeriveCopy::visit_union (Union &item)
+{
+ expanded = copy_impl (item.get_identifier ());
+}
+
+} // namespace AST
+} // namespace Rust
diff --git a/gcc/rust/expand/rust-derive-copy.h b/gcc/rust/expand/rust-derive-copy.h
new file mode 100644
index 00000000000..dce1f5e9a95
--- /dev/null
+++ b/gcc/rust/expand/rust-derive-copy.h
@@ -0,0 +1,56 @@
+// Copyright (C) 2020-2023 Free Software Foundation, Inc.
+
+// This file is part of GCC.
+
+// GCC is free software; you can redistribute it and/or modify it under
+// the terms of the GNU General Public License as published by the Free
+// Software Foundation; either version 3, or (at your option) any later
+// version.
+
+// GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+// WARRANTY; without even the implied warranty of MERCHANTABILITY or
+// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+// for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with GCC; see the file COPYING3. If not see
+// <http://www.gnu.org/licenses/>.
+
+#ifndef RUST_DERIVE_COPY_H
+#define RUST_DERIVE_COPY_H
+
+#include "rust-derive.h"
+#include "rust-ast-builder.h"
+
+namespace Rust {
+namespace AST {
+class DeriveCopy : DeriveVisitor
+{
+public:
+ DeriveCopy (Location loc);
+
+ std::unique_ptr<Item> go (Item &);
+
+private:
+ Location loc;
+ AstBuilder builder;
+ std::unique_ptr<Item> expanded;
+
+ /**
+ * Create the Copy impl block for a type. These impl blocks are very simple as
+ * Copy is just a marker trait.
+ *
+ * impl Copy for <type> {}
+ */
+ std::unique_ptr<Item> copy_impl (std::string name);
+
+ virtual void visit_struct (StructStruct &item);
+ virtual void visit_tuple (TupleStruct &item);
+ virtual void visit_enum (Enum &item);
+ virtual void visit_union (Union &item);
+};
+
+} // namespace AST
+} // namespace Rust
+
+#endif // !RUST_DERIVE_COPY_H
diff --git a/gcc/rust/expand/rust-derive.cc b/gcc/rust/expand/rust-derive.cc
index cf5126663f6..8f9b206da4b 100644
--- a/gcc/rust/expand/rust-derive.cc
+++ b/gcc/rust/expand/rust-derive.cc
@@ -18,6 +18,7 @@
#include "rust-derive.h"
#include "rust-derive-clone.h"
+#include "rust-derive-copy.h"
namespace Rust {
namespace AST {
@@ -31,6 +32,7 @@ DeriveVisitor::derive (Item &item, const Attribute &attr,
case BuiltinMacro::Clone:
return DeriveClone (attr.get_locus ()).go (item);
case BuiltinMacro::Copy:
+ return DeriveCopy (attr.get_locus ()).go (item);
case BuiltinMacro::Debug:
case BuiltinMacro::Default:
case BuiltinMacro::Eq:
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