Allow calling diagnostic_show_locus without a diagnostic_info

Much of diagnostic-show-locus.c currently expects a diagnostic_info *,
but it only uses the rich_location and the diagnostic_t.

Change the signature of diagnostic_show_locus from:

  void
  diagnostic_show_locus (diagnostic_context *,
                         const diagnostic_info *);

to:

  void
  diagnostic_show_locus (diagnostic_context *,
                         rich_location *richloc,
                         diagnostic_t diagnostic_kind);

so that it can be used for things other than diagnostics.

Use this flexibility to add selftests for diagnostic_show_locus.

gcc/c-family/ChangeLog:
	* c-opts.c (c_diagnostic_finalizer): Update for change to
	diagnostic_show_locus.

gcc/ChangeLog:
	* diagnostic-show-locus.c (colorizer::colorizer): Replace diagnostic
	param with diagnostic_kind.
	(class colorizer): Similarly replace field m_diagnostic with
	m_diagnostic_kind.
	(colorizer::colorizer): Replace diagnostic
	param with diagnostic_kind.
	(colorizer::begin_state): Update for above field change.
	(layout::layout): Replace diagnostic param with rich_location *
	and diagnostic_kind.
	(diagnostic_show_locus): Replace diagnostic param with richloc
	and diagnostic_kind.
	(class selftest::test_diagnostic_context): New class.
	(selftest::test_diagnostic_show_locus_unknown_location): New
	function.
	(selftest::test_one_liner_simple_caret): New function.
	(selftest::test_one_liner_caret_and_range): New function.
	(selftest::test_one_liner_multiple_carets_and_ranges): New
	function.
	(selftest::test_one_liner_fixit_remove): New function.
	(selftest::test_one_liner_fixit_replace): New function.
	(selftest::test_diagnostic_show_locus_one_liner): New function.
	(selftest::diagnostic_show_locus_c_tests): Call the new test
	functions.
	* diagnostic.c (diagnostic_initialize): Initialize
	colorize_source_p, show_ruler_p and parseable_fixits_p.
	(default_diagnostic_finalizer): Update for change to
	diagnostic_show_locus.
	(diagnostic_append_note): Likewise.
	* diagnostic.h (diagnostic_show_locus): Replace
	const diagnostic_info * param with location * and diagnostic_t.

gcc/fortran/ChangeLog:
	* error.c (gfc_diagnostic_starter): Update for change to
	diagnostic_show_locus.

gcc/testsuite/ChangeLog:
	* gcc.dg/plugin/diagnostic_plugin_test_show_locus.c
	(custom_diagnostic_finalizer): Update for change to
	diagnostic_show_locus.

From-SVN: r239586

1 files changed, 5 insertions, 2 deletions

diff --git a/gcc/diagnostic.c b/gcc/diagnostic.c
index bb41011afad..fec48c4e441 100644
--- a/gcc/diagnostic.c
+++ b/gcc/diagnostic.c
@@ -171,6 +171,9 @@ diagnostic_initialize (diagnostic_context *context, int n_opts)
   context->x_data = NULL;
   context->lock = 0;
   context->inhibit_notes_p = false;
+  context->colorize_source_p = false;
+  context->show_ruler_p = false;
+  context->parseable_fixits_p = false;
 }
 
 /* Maybe initialize the color support. We require clients to do this
@@ -575,7 +578,7 @@ void
 default_diagnostic_finalizer (diagnostic_context *context,
 			      diagnostic_info *diagnostic)
 {
-  diagnostic_show_locus (context, diagnostic);
+  diagnostic_show_locus (context, diagnostic->richloc, diagnostic->kind);
   pp_destroy_prefix (context->printer);
   pp_flush (context->printer);
 }
@@ -1025,7 +1028,7 @@ diagnostic_append_note (diagnostic_context *context,
   pp_output_formatted_text (context->printer);
   pp_destroy_prefix (context->printer);
   pp_set_prefix (context->printer, saved_prefix);
-  diagnostic_show_locus (context, &diagnostic);
+  diagnostic_show_locus (context, &richloc, DK_NOTE);
   va_end (ap);
 }