[gcc/devel/rust/master] token: Add type hints to string dump

[gcc/devel/rust/master] token: Add type hints to string dump

[Thomas Schwinge]

https://gcc.gnu.org/g:816ed80ab7c02cf05cdb1e811f230fe25ea9d413

commit 816ed80ab7c02cf05cdb1e811f230fe25ea9d413
Author: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>
Date:   Mon Mar 27 15:41:47 2023 +0200

    token: Add type hints to string dump
    
    The conversion to string of any known type literal was not giving back
    any type hint, not even quotes for string. This commit fix this.
    
    gcc/rust/ChangeLog:
    
            * lex/rust-token.cc (Token::as_string): Add type hint output.
    
    Signed-off-by: Pierre-Emmanuel Patry <pierre-emmanuel.patry@embecosm.com>

Diff:
---
 gcc/rust/lex/rust-token.cc | 26 +++++++++++++++++++++++++-
 1 file changed, 25 insertions(+), 1 deletion(-)

diff --git a/gcc/rust/lex/rust-token.cc b/gcc/rust/lex/rust-token.cc
index a6be8473fe6..35da79e5864 100644
--- a/gcc/rust/lex/rust-token.cc
+++ b/gcc/rust/lex/rust-token.cc
@@ -137,7 +137,31 @@ Token::as_string () const
 {
   if (should_have_str ())
     {
-      return get_str ();
+      switch (get_id ())
+	{
+	case STRING_LITERAL:
+	  return "\"" + get_str () + "\"";
+	case BYTE_STRING_LITERAL:
+	  return "b\"" + get_str () + "\"";
+	case CHAR_LITERAL:
+	  return "'" + get_str () + "'";
+	case BYTE_CHAR_LITERAL:
+	  return "b'" + get_str () + "'";
+	case LIFETIME:
+	  return "''" + get_str ();
+	case INT_LITERAL:
+	  if (get_type_hint () == CORETYPE_UNKNOWN)
+	    return get_str ();
+	  else
+	    return get_str () + get_type_hint_str ();
+	case FLOAT_LITERAL:
+	  if (get_type_hint () == CORETYPE_UNKNOWN)
+	    return get_str ();
+	  else
+	    return get_str () + get_type_hint_str ();
+	default:
+	  return get_str ();
+	}
     }
   else
     {