[gcc/devel/rust/master] Merge #1708

[gcc/devel/rust/master] Merge #1708

[Thomas Schwinge]

https://gcc.gnu.org/g:3290293e16fa47cf59f0434343c1bf40497ede90

commit 3290293e16fa47cf59f0434343c1bf40497ede90
Merge: 48d32bc9cb0 9e5769cf45c
Author: bors[bot] <26634292+bors[bot]@users.noreply.github.com>
Date:   Mon Jan 9 15:48:12 2023 +0000

    Merge #1708
    
    1708: Parse declarative macro (decl_macro 2.0) r=CohenArthur a=tamaroning
    
    This PR is currentry wip.
    Opinions and advices are welcome!
    
    Co-authored-by: Raiki Tamura <tamaron1203@gmail.com>

Diff:

 gcc/rust/ast/rust-ast-full-decls.h                |   1 -
 gcc/rust/ast/rust-ast-full-test.cc                |   1 +
 gcc/rust/ast/rust-ast.h                           |   5 -
 gcc/rust/ast/rust-item.h                          |   2 -
 gcc/rust/ast/rust-macro.h                         |  65 ++++--
 gcc/rust/lex/rust-token.h                         |   2 +-
 gcc/rust/parse/rust-parse-impl.h                  | 229 +++++++++++++++++-----
 gcc/rust/parse/rust-parse.h                       |   3 +-
 gcc/testsuite/rust/compile/decl_macro1.rs         |   2 +
 gcc/testsuite/rust/compile/decl_macro2.rs         |   2 +
 gcc/testsuite/rust/compile/decl_macro3.rs         |   4 +
 gcc/testsuite/rust/compile/decl_macro4.rs         |   5 +
 gcc/testsuite/rust/compile/decl_macro5.rs         |   5 +
 gcc/testsuite/rust/compile/decl_macro6.rs         |   5 +
 gcc/testsuite/rust/compile/decl_macro7.rs         |   4 +
 gcc/testsuite/rust/execute/torture/decl_macro1.rs |   8 +
 gcc/testsuite/rust/execute/torture/decl_macro2.rs |   8 +
 gcc/testsuite/rust/execute/torture/decl_macro3.rs |  15 ++
 gcc/testsuite/rust/execute/torture/decl_macro4.rs |  15 ++
 19 files changed, 301 insertions(+), 80 deletions(-)