format-args: Fix Rust interface and add input parsing.

gcc/rust/ChangeLog:

	* Make-lang.in: Do not build Rust library in release mode.
	* ast/rust-ast.cc: Make FormatArgs inherit from AST::Expr
	* ast/rust-builtin-ast-nodes.h: Improve FormatArg* nodes and helpers.
	* ast/rust-fmt.cc (Pieces::collect): Fix interface to match FFI function.
	* ast/rust-fmt.h (collect_pieces): Likewise.
	(struct Pieces): Add append_newline parameter.
	* expand/rust-macro-builtins.cc: Add proper parsing of format_args
	input.
	* hir/rust-ast-lower-base.cc: Include diagnostics header.

libgrust/ChangeLog:

	* libformat_parser/src/lib.rs: Switch interface to use more parser
	parameters.
	* libformat_parser/src/bin.rs: Use new interface.

1 files changed, 18 insertions, 3 deletions

diff --git a/gcc/rust/ast/rust-fmt.h b/gcc/rust/ast/rust-fmt.h
index 0bf9695..22447c4 100644
--- a/gcc/rust/ast/rust-fmt.h
+++ b/gcc/rust/ast/rust-fmt.h
@@ -222,7 +222,7 @@ struct Piece
 
   struct NextArgument_Body
   {
-    const Argument *_0;
+    Argument _0;
   };
 
   Tag tag;
@@ -243,7 +243,10 @@ struct PieceSlice
 extern "C" {
 
 PieceSlice
-collect_pieces (const char *input);
+collect_pieces (const char *input, bool append_newline);
+
+PieceSlice
+clone_pieces (const Piece *base_ptr, size_t len, size_t cap);
 
 void destroy_pieces (PieceSlice);
 
@@ -251,9 +254,21 @@ void destroy_pieces (PieceSlice);
 
 struct Pieces
 {
-  static Pieces collect (std::string &&to_parse);
+  static Pieces collect (std::string &&to_parse, bool append_newline);
   ~Pieces ();
 
+  Pieces (const Pieces &other);
+  Pieces &operator= (const Pieces &other);
+
+  Pieces (Pieces &&other);
+
+  // {
+  //   slice = clone_pieces (&other.slice);
+  //   to_parse = other.to_parse;
+
+  //   return *this;
+  // }
+
 private:
   Pieces (PieceSlice slice, std::string &&to_parse)
     : slice (slice), to_parse (std::move (to_parse))