Change parameters to language_defn::post_parser

In the expression rewrite, Ada type resolution will be done at parse
time rather than in a post-parse pass.  At this point,
language_defn::post_parser will be removed.  However, for this to
work, the information available to post_parser must be made available
during the actual parse.

This patch refactors this code slightly to make this possible.  In
particular, "void_context_p" is passed to the parser_state
constructor, and the parser state is then passed to the post_parser
method.

gdb/ChangeLog
2020-12-16  Tom Tromey  <tom@tromey.com>

	* rust-exp.y (rust_lex_tests): Update.
	* parser-defs.h (parser_state): Add void_p parameter.
	<void_context_p>: New member.
	* parse.c (parse_exp_in_context): Update.
	* language.h (language_defn::post_parser): Remove void_context_p,
	completing, tracker parameters.  Add parser state.
	* ada-lang.c (ada_language::post_parser): Update.

1 files changed, 4 insertions, 8 deletions

diff --git a/gdb/language.h b/gdb/language.h
index 5bc99d5..73ddd24 100644
--- a/gdb/language.h
+++ b/gdb/language.h
@@ -522,14 +522,10 @@ struct language_defn
   /* Given an expression *EXPP created by prefixifying the result of
      la_parser, perform any remaining processing necessary to complete its
      translation.  *EXPP may change; la_post_parser is responsible for
-     releasing its previous contents, if necessary.  If VOID_CONTEXT_P,
-     then no value is expected from the expression.  If COMPLETING is
-     non-zero, then the expression has been parsed for completion, not
-     evaluation.  */
-
-  virtual void post_parser (expression_up *expp, bool void_context_p,
-			    int completing,
-			    innermost_block_tracker *tracker) const
+     releasing its previous contents, if necessary.  */
+
+  virtual void post_parser (expression_up *expp, struct parser_state *ps)
+    const
   {
     /* By default the post-parser does nothing.  */
   }