Makefile.in: Add opt-suggestions.o.

.
2018-06-28  Martin Liska  <mliska@suse.cz>

	* Makefile.in: Add opt-suggestions.o.
	* gcc-main.c: Include opt-suggestions.h.
	* gcc.c (driver::driver): Likewise.
	(driver::~driver): Remove m_option_suggestions.
	(driver::build_option_suggestions): Moved to option_proposer.
	(driver::suggest_option): Likewise.
	(driver::handle_unrecognized_options): Use option_proposer.
	* gcc.h (class driver): Add new memver m_option_proposer.
	* opt-suggestions.c: New file.
	* opt-suggestions.h: New file.
2018-06-28  Martin Liska  <mliska@suse.cz>

	* cppspec.c: Include opt-suggestions.h.
2018-06-28  Martin Liska  <mliska@suse.cz>

	* gfortranspec.c: Include opt-suggestions.h.
2018-06-28  Martin Liska  <mliska@suse.cz>

	* jit-playback.c: Include opt-suggestions.h.

From-SVN: r262209

13 files changed, 215 insertions, 115 deletions

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index a5a6ace..aee4f0f 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,5 +1,18 @@
 2018-06-28  Martin Liska  <mliska@suse.cz>
 
+	* Makefile.in: Add opt-suggestions.o.
+	* gcc-main.c: Include opt-suggestions.h.
+	* gcc.c (driver::driver): Likewise.
+	(driver::~driver): Remove m_option_suggestions.
+	(driver::build_option_suggestions): Moved to option_proposer.
+	(driver::suggest_option): Likewise.
+	(driver::handle_unrecognized_options): Use option_proposer.
+	* gcc.h (class driver): Add new memver m_option_proposer.
+	* opt-suggestions.c: New file.
+	* opt-suggestions.h: New file.
+
+2018-06-28  Martin Liska  <mliska@suse.cz>
+
 	* vec.h (class auto_string_vec): New (moved from auto_argvec).
 	(auto_string_vec::~auto_string_vec): Likewise.
 
diff --git a/gcc/Makefile.in b/gcc/Makefile.in
index 1f38cac..66c8b6e 100644
--- a/gcc/Makefile.in
+++ b/gcc/Makefile.in
@@ -1615,7 +1615,7 @@ OBJS-libcommon = diagnostic.o diagnostic-color.o diagnostic-show-locus.o \
 # compiler and containing target-dependent code.
 OBJS-libcommon-target = $(common_out_object_file) prefix.o params.o \
 	opts.o opts-common.o options.o vec.o hooks.o common/common-targhooks.o \
-	hash-table.o file-find.o spellcheck.o selftest.o
+	hash-table.o file-find.o spellcheck.o selftest.o opt-suggestions.o
 
 # This lists all host objects for the front ends.
 ALL_HOST_FRONTEND_OBJS = $(foreach v,$(CONFIG_LANGUAGES),$($(v)_OBJS))
diff --git a/gcc/c-family/ChangeLog b/gcc/c-family/ChangeLog
index fc7f7de..9596eec 100644
--- a/gcc/c-family/ChangeLog
+++ b/gcc/c-family/ChangeLog
@@ -1,3 +1,7 @@
+2018-06-28  Martin Liska  <mliska@suse.cz>
+
+	* cppspec.c: Include opt-suggestions.h.
+
 2018-06-20  Chung-Lin Tang <cltang@codesourcery.com>
 	    Thomas Schwinge <thomas@codesourcery.com>
 	    Cesar Philippidis  <cesar@codesourcery.com>
diff --git a/gcc/c-family/cppspec.c b/gcc/c-family/cppspec.c
index 1e0a8bc..6654023 100644
--- a/gcc/c-family/cppspec.c
+++ b/gcc/c-family/cppspec.c
@@ -21,6 +21,7 @@ along with GCC; see the file COPYING3.  If not see
 #include "system.h"
 #include "coretypes.h"
 #include "tm.h"
+#include "opt-suggestions.h"
 #include "gcc.h"
 #include "opts.h"
 
diff --git a/gcc/fortran/ChangeLog b/gcc/fortran/ChangeLog
index f052cfe..6e1af2e 100644
--- a/gcc/fortran/ChangeLog
+++ b/gcc/fortran/ChangeLog
@@ -1,3 +1,7 @@
+2018-06-28  Martin Liska  <mliska@suse.cz>
+
+	* gfortranspec.c: Include opt-suggestions.h.
+
 2018-06-25  Fritz Reese  <fritzoreese@gmail.com>
 
 	PR fortran/82972
diff --git a/gcc/fortran/gfortranspec.c b/gcc/fortran/gfortranspec.c
index fe1ec04..4ba3a8d 100644
--- a/gcc/fortran/gfortranspec.c
+++ b/gcc/fortran/gfortranspec.c
@@ -47,6 +47,7 @@ along with GCC; see the file COPYING3.  If not see
 #include "config.h"
 #include "system.h"
 #include "coretypes.h"
+#include "opt-suggestions.h"
 #include "gcc.h"
 #include "opts.h"
 
diff --git a/gcc/gcc-main.c b/gcc/gcc-main.c
index 9e6de74..6a759bb 100644
--- a/gcc/gcc-main.c
+++ b/gcc/gcc-main.c
@@ -30,6 +30,7 @@ along with GCC; see the file COPYING3.  If not see
 #include "obstack.h"
 #include "intl.h"
 #include "prefix.h"
+#include "opt-suggestions.h"
 #include "gcc.h"
 
 /* Implement the top-level "main" within the driver in terms of
diff --git a/gcc/gcc.c b/gcc/gcc.c
index 405d2e3..dda1fd3 100644
--- a/gcc/gcc.c
+++ b/gcc/gcc.c
@@ -36,6 +36,7 @@ compilation is specified by a string called a "spec".  */
 #include "obstack.h"
 #include "intl.h"
 #include "prefix.h"
+#include "opt-suggestions.h"
 #include "gcc.h"
 #include "diagnostic.h"
 #include "flags.h"
@@ -7270,8 +7271,7 @@ compare_files (char *cmpfile[])
 
 driver::driver (bool can_finalize, bool debug) :
   explicit_link_files (NULL),
-  decoded_options (NULL),
-  m_option_suggestions (NULL)
+  decoded_options (NULL)
 {
   env.init (can_finalize, debug);
 }
@@ -7280,14 +7280,6 @@ driver::~driver ()
 {
   XDELETEVEC (explicit_link_files);
   XDELETEVEC (decoded_options);
-  if (m_option_suggestions)
-    {
-      int i;
-      char *str;
-      FOR_EACH_VEC_ELT (*m_option_suggestions, i, str)
-	free (str);
-      delete m_option_suggestions;
-    }
 }
 
 /* driver::main is implemented as a series of driver:: method calls.  */
@@ -7776,106 +7768,6 @@ driver::maybe_putenv_OFFLOAD_TARGETS () const
   offload_targets = NULL;
 }
 
-/* Helper function for driver::suggest_option.  Populate
-   m_option_suggestions with candidate strings for misspelled options.
-   The strings will be freed by the driver's dtor.  */
-
-void
-driver::build_option_suggestions (void)
-{
-  gcc_assert (m_option_suggestions == NULL);
-  m_option_suggestions = new auto_vec <char *> ();
-
-  /* We build a vec of m_option_suggestions, using add_misspelling_candidates
-     to add copies of strings, without a leading dash.  */
-
-  for (unsigned int i = 0; i < cl_options_count; i++)
-    {
-      const struct cl_option *option = &cl_options[i];
-      const char *opt_text = option->opt_text;
-      switch (i)
-	{
-	default:
-	  if (option->var_type == CLVC_ENUM)
-	    {
-	      const struct cl_enum *e = &cl_enums[option->var_enum];
-	      for (unsigned j = 0; e->values[j].arg != NULL; j++)
-		{
-		  char *with_arg = concat (opt_text, e->values[j].arg, NULL);
-		  add_misspelling_candidates (m_option_suggestions, option,
-					      with_arg);
-		  free (with_arg);
-		}
-	    }
-	  else
-	    add_misspelling_candidates (m_option_suggestions, option,
-					opt_text);
-	  break;
-
-	case OPT_fsanitize_:
-	case OPT_fsanitize_recover_:
-	  /* -fsanitize= and -fsanitize-recover= can take
-	     a comma-separated list of arguments.  Given that combinations
-	     are supported, we can't add all potential candidates to the
-	     vec, but if we at least add them individually without commas,
-	     we should do a better job e.g. correcting
-	       "-sanitize=address"
-	     to
-	       "-fsanitize=address"
-	     rather than to "-Wframe-address" (PR driver/69265).  */
-	  {
-	    for (int j = 0; sanitizer_opts[j].name != NULL; ++j)
-	      {
-		struct cl_option optb;
-		/* -fsanitize=all is not valid, only -fno-sanitize=all.
-		   So don't register the positive misspelling candidates
-		   for it.  */
-		if (sanitizer_opts[j].flag == ~0U && i == OPT_fsanitize_)
-		  {
-		    optb = *option;
-		    optb.opt_text = opt_text = "-fno-sanitize=";
-		    optb.cl_reject_negative = true;
-		    option = &optb;
-		  }
-		/* Get one arg at a time e.g. "-fsanitize=address".  */
-		char *with_arg = concat (opt_text,
-					 sanitizer_opts[j].name,
-					 NULL);
-		/* Add with_arg and all of its variant spellings e.g.
-		   "-fno-sanitize=address" to candidates (albeit without
-		   leading dashes).  */
-		add_misspelling_candidates (m_option_suggestions, option,
-					    with_arg);
-		free (with_arg);
-	      }
-	  }
-	  break;
-	}
-    }
-}
-
-/* Helper function for driver::handle_unrecognized_options.
-
-   Given an unrecognized option BAD_OPT (without the leading dash),
-   locate the closest reasonable matching option (again, without the
-   leading dash), or NULL.
-
-   The returned string is owned by the driver instance.  */
-
-const char *
-driver::suggest_option (const char *bad_opt)
-{
-  /* Lazily populate m_option_suggestions.  */
-  if (!m_option_suggestions)
-    build_option_suggestions ();
-  gcc_assert (m_option_suggestions);
-
-  /* "m_option_suggestions" is now populated.  Use it.  */
-  return find_closest_string
-    (bad_opt,
-     (auto_vec <const char *> *) m_option_suggestions);
-}
-
 /* Reject switches that no pass was interested in.  */
 
 void
@@ -7884,7 +7776,7 @@ driver::handle_unrecognized_options ()
   for (size_t i = 0; (int) i < n_switches; i++)
     if (! switches[i].validated)
       {
-	const char *hint = suggest_option (switches[i].part1);
+	const char *hint = m_option_proposer.suggest_option (switches[i].part1);
 	if (hint)
 	  error ("unrecognized command line option %<-%s%>;"
 		 " did you mean %<-%s%>?",
diff --git a/gcc/gcc.h b/gcc/gcc.h
index ddbf42f..a760618 100644
--- a/gcc/gcc.h
+++ b/gcc/gcc.h
@@ -45,8 +45,6 @@ class driver
   void putenv_COLLECT_GCC (const char *argv0) const;
   void maybe_putenv_COLLECT_LTO_WRAPPER () const;
   void maybe_putenv_OFFLOAD_TARGETS () const;
-  void build_option_suggestions (void);
-  const char *suggest_option (const char *bad_opt);
   void handle_unrecognized_options ();
   int maybe_print_and_exit () const;
   bool prepare_infiles ();
@@ -59,7 +57,7 @@ class driver
   char *explicit_link_files;
   struct cl_decoded_option *decoded_options;
   unsigned int decoded_options_count;
-  auto_vec <char *> *m_option_suggestions;
+  option_proposer m_option_proposer;
 };
 
 /* The mapping of a spec function name to the C function that
diff --git a/gcc/jit/ChangeLog b/gcc/jit/ChangeLog
index 059cbb8..2267967 100644
--- a/gcc/jit/ChangeLog
+++ b/gcc/jit/ChangeLog
@@ -1,5 +1,9 @@
 2018-06-28  Martin Liska  <mliska@suse.cz>
 
+	* jit-playback.c: Include opt-suggestions.h.
+
+2018-06-28  Martin Liska  <mliska@suse.cz>
+
 	* jit-playback.c (class auto_argvec): Moved to vec.h.
 	(auto_argvec::~auto_argvec): Likewise.
 	(compile): Use the renamed name.
diff --git a/gcc/jit/jit-playback.c b/gcc/jit/jit-playback.c
index 01c4567..f11642b 100644
--- a/gcc/jit/jit-playback.c
+++ b/gcc/jit/jit-playback.c
@@ -36,6 +36,7 @@ along with GCC; see the file COPYING3.  If not see
 #include "attribs.h"
 #include "context.h"
 #include "fold-const.h"
+#include "opt-suggestions.h"
 #include "gcc.h"
 #include "diagnostic.h"
 
diff --git a/gcc/opt-suggestions.c b/gcc/opt-suggestions.c
new file mode 100644
index 0000000..90ab80e
--- /dev/null
+++ b/gcc/opt-suggestions.c
@@ -0,0 +1,122 @@
+/* Provide option suggestion for --complete option and a misspelled
+   used by a user.
+   Copyright (C) 2016-2018 Free Software Foundation, Inc.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 3, or (at your option) any later
+version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING3.  If not see
+<http://www.gnu.org/licenses/>.  */
+
+#include "config.h"
+#include "system.h"
+#include "coretypes.h"
+#include "tm.h"
+#include "opts.h"
+#include "params.h"
+#include "spellcheck.h"
+#include "opt-suggestions.h"
+#include "selftest.h"
+
+option_proposer::~option_proposer ()
+{
+  delete m_option_suggestions;
+}
+
+const char *
+option_proposer::suggest_option (const char *bad_opt)
+{
+  /* Lazily populate m_option_suggestions.  */
+  if (!m_option_suggestions)
+    build_option_suggestions ();
+  gcc_assert (m_option_suggestions);
+
+  /* "m_option_suggestions" is now populated.  Use it.  */
+  return find_closest_string
+    (bad_opt,
+     (auto_vec <const char *> *) m_option_suggestions);
+}
+
+void
+option_proposer::build_option_suggestions (void)
+{
+  gcc_assert (m_option_suggestions == NULL);
+  m_option_suggestions = new auto_string_vec ();
+
+  /* We build a vec of m_option_suggestions, using add_misspelling_candidates
+     to add copies of strings, without a leading dash.  */
+
+  for (unsigned int i = 0; i < cl_options_count; i++)
+    {
+      const struct cl_option *option = &cl_options[i];
+      const char *opt_text = option->opt_text;
+      switch (i)
+	{
+	default:
+	  if (option->var_type == CLVC_ENUM)
+	    {
+	      const struct cl_enum *e = &cl_enums[option->var_enum];
+	      for (unsigned j = 0; e->values[j].arg != NULL; j++)
+		{
+		  char *with_arg = concat (opt_text, e->values[j].arg, NULL);
+		  add_misspelling_candidates (m_option_suggestions, option,
+					      with_arg);
+		  free (with_arg);
+		}
+	    }
+	  else
+	    add_misspelling_candidates (m_option_suggestions, option,
+					opt_text);
+	  break;
+
+	case OPT_fsanitize_:
+	case OPT_fsanitize_recover_:
+	  /* -fsanitize= and -fsanitize-recover= can take
+	     a comma-separated list of arguments.  Given that combinations
+	     are supported, we can't add all potential candidates to the
+	     vec, but if we at least add them individually without commas,
+	     we should do a better job e.g. correcting
+	       "-sanitize=address"
+	     to
+	       "-fsanitize=address"
+	     rather than to "-Wframe-address" (PR driver/69265).  */
+	  {
+	    for (int j = 0; sanitizer_opts[j].name != NULL; ++j)
+	      {
+		struct cl_option optb;
+		/* -fsanitize=all is not valid, only -fno-sanitize=all.
+		   So don't register the positive misspelling candidates
+		   for it.  */
+		if (sanitizer_opts[j].flag == ~0U && i == OPT_fsanitize_)
+		  {
+		    optb = *option;
+		    optb.opt_text = opt_text = "-fno-sanitize=";
+		    optb.cl_reject_negative = true;
+		    option = &optb;
+		  }
+		/* Get one arg at a time e.g. "-fsanitize=address".  */
+		char *with_arg = concat (opt_text,
+					 sanitizer_opts[j].name,
+					 NULL);
+		/* Add with_arg and all of its variant spellings e.g.
+		   "-fno-sanitize=address" to candidates (albeit without
+		   leading dashes).  */
+		add_misspelling_candidates (m_option_suggestions, option,
+					    with_arg);
+		free (with_arg);
+	      }
+	  }
+	  break;
+	}
+    }
+}
diff --git a/gcc/opt-suggestions.h b/gcc/opt-suggestions.h
new file mode 100644
index 0000000..ccd4e45
--- /dev/null
+++ b/gcc/opt-suggestions.h
@@ -0,0 +1,59 @@
+/* Provide suggestions to handle misspelled options, and implement the
+   --complete option for auto-completing options from a prefix.
+   Copyright (C) 2016-2018 Free Software Foundation, Inc.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 3, or (at your option) any later
+version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING3.  If not see
+<http://www.gnu.org/licenses/>.  */
+
+#ifndef GCC_OPT_PROPOSER_H
+#define GCC_OPT_PROPOSER_H
+
+/* Option proposer is class used by driver in order to provide hints
+   for wrong options provided.  And it's used by --complete option that's
+   intended to be invoked by BASH in order to provide better option
+   completion support.  */
+
+class option_proposer
+{
+public:
+  /* Default constructor.  */
+  option_proposer (): m_option_suggestions (NULL)
+  {}
+
+  /* Default destructor.  */
+  ~option_proposer ();
+
+  /* Helper function for driver::handle_unrecognized_options.
+
+     Given an unrecognized option BAD_OPT (without the leading dash),
+     locate the closest reasonable matching option (again, without the
+     leading dash), or NULL.
+
+     The returned string is owned by the option_proposer instance.  */
+  const char *suggest_option (const char *bad_opt);
+
+private:
+  /* Helper function for option_proposer::suggest_option.  Populate
+     m_option_suggestions with candidate strings for misspelled options.
+     The strings will be freed by the option_proposer's dtor.  */
+  void build_option_suggestions ();
+
+private:
+  /* Cache with all suggestions.  */
+  auto_string_vec *m_option_suggestions;
+};
+
+#endif  /* GCC_OPT_PROPOSER_H */