constify ui_out_impl
[deliverable/binutils-gdb.git] / gdb / cp-valprint.c
index 7df9adfba49787a0d992f68c5c3b502d08bc3dd2..2d366b9b182fd890604b0363f3befc7718614166 100644 (file)
@@ -1,7 +1,6 @@
 /* Support for printing C++ values for GDB, the GNU debugger.
 
-   Copyright (C) 1986, 1988-1989, 1991-1997, 2000-2003, 2005-2012 Free
-   Software Foundation, Inc.
+   Copyright (C) 1986-2014 Free Software Foundation, Inc.
 
    This file is part of GDB.
 
 #include "gdbcmd.h"
 #include "demangle.h"
 #include "annotate.h"
-#include "gdb_string.h"
+#include <string.h>
 #include "c-lang.h"
 #include "target.h"
 #include "cp-abi.h"
 #include "valprint.h"
 #include "cp-support.h"
 #include "language.h"
-#include "python/python.h"
+#include "extension.h"
 #include "exceptions.h"
+#include "typeprint.h"
 
 /* Controls printing of vtbl's.  */
 static void
@@ -98,7 +98,7 @@ const char vtbl_ptr_name[] = "__vtbl_ptr_type";
 int
 cp_is_vtbl_ptr_type (struct type *type)
 {
-  char *typename = type_name_no_tag (type);
+  const char *typename = type_name_no_tag (type);
 
   return (typename != NULL && !strcmp (typename, vtbl_ptr_name));
 }
@@ -210,7 +210,9 @@ cp_print_value_fields (struct type *type, struct type *real_type,
     {
       int statmem_obstack_initial_size = 0;
       int stat_array_obstack_initial_size = 0;
-      
+      struct type *vptr_basetype = NULL;
+      int vptr_fieldno;
+
       if (dont_print_statmem == 0)
        {
          statmem_obstack_initial_size =
@@ -225,6 +227,7 @@ cp_print_value_fields (struct type *type, struct type *real_type,
            }
        }
 
+      vptr_fieldno = get_vptr_fieldno (type, &vptr_basetype);
       for (i = n_baseclasses; i < len; i++)
        {
          /* If requested, skip printing of static fields.  */
@@ -236,7 +239,7 @@ cp_print_value_fields (struct type *type, struct type *real_type,
            fprintf_filtered (stream, ", ");
          else if (n_baseclasses > 0)
            {
-             if (options->pretty)
+             if (options->prettyformat)
                {
                  fprintf_filtered (stream, "\n");
                  print_spaces_filtered (2 + 2 * recurse, stream);
@@ -247,7 +250,7 @@ cp_print_value_fields (struct type *type, struct type *real_type,
            }
          fields_seen = 1;
 
-         if (options->pretty)
+         if (options->prettyformat)
            {
              fprintf_filtered (stream, "\n");
              print_spaces_filtered (2 + 2 * recurse, stream);
@@ -256,42 +259,21 @@ cp_print_value_fields (struct type *type, struct type *real_type,
            {
              wrap_here (n_spaces (2 + 2 * recurse));
            }
-         if (options->inspect_it)
-           {
-             if (TYPE_CODE (TYPE_FIELD_TYPE (type, i)) == TYPE_CODE_PTR)
-               fputs_filtered ("\"( ptr \"", stream);
-             else
-               fputs_filtered ("\"( nodef \"", stream);
-             if (field_is_static (&TYPE_FIELD (type, i)))
-               fputs_filtered ("static ", stream);
-             fprintf_symbol_filtered (stream,
-                                      TYPE_FIELD_NAME (type, i),
-                                      current_language->la_language,
-                                      DMGL_PARAMS | DMGL_ANSI);
-             fputs_filtered ("\" \"", stream);
-             fprintf_symbol_filtered (stream,
-                                      TYPE_FIELD_NAME (type, i),
-                                      current_language->la_language,
-                                      DMGL_PARAMS | DMGL_ANSI);
-             fputs_filtered ("\") \"", stream);
-           }
-         else
-           {
-             annotate_field_begin (TYPE_FIELD_TYPE (type, i));
-
-             if (field_is_static (&TYPE_FIELD (type, i)))
-               fputs_filtered ("static ", stream);
-             fprintf_symbol_filtered (stream,
-                                      TYPE_FIELD_NAME (type, i),
-                                      current_language->la_language,
-                                      DMGL_PARAMS | DMGL_ANSI);
-             annotate_field_name_end ();
-             /* Do not print leading '=' in case of anonymous
-                unions.  */
-             if (strcmp (TYPE_FIELD_NAME (type, i), ""))
-               fputs_filtered (" = ", stream);
-             annotate_field_value ();
-           }
+
+         annotate_field_begin (TYPE_FIELD_TYPE (type, i));
+
+         if (field_is_static (&TYPE_FIELD (type, i)))
+           fputs_filtered ("static ", stream);
+         fprintf_symbol_filtered (stream,
+                                  TYPE_FIELD_NAME (type, i),
+                                  current_language->la_language,
+                                  DMGL_PARAMS | DMGL_ANSI);
+         annotate_field_name_end ();
+         /* Do not print leading '=' in case of anonymous
+            unions.  */
+         if (strcmp (TYPE_FIELD_NAME (type, i), ""))
+           fputs_filtered (" = ", stream);
+         annotate_field_value ();
 
          if (!field_is_static (&TYPE_FIELD (type, i))
              && TYPE_FIELD_PACKED (type, i))
@@ -316,7 +298,7 @@ cp_print_value_fields (struct type *type, struct type *real_type,
                                          TYPE_FIELD_BITPOS (type, i),
                                          TYPE_FIELD_BITSIZE (type, i)))
                {
-                 val_print_optimized_out (stream);
+                 val_print_optimized_out (val, stream);
                }
              else
                {
@@ -351,12 +333,24 @@ cp_print_value_fields (struct type *type, struct type *real_type,
                    fprintf_filtered (stream,
                                      _("<error reading variable: %s>"),
                                      ex.message);
-                 else if (v == NULL)
-                   val_print_optimized_out (stream);
-                 else
-                   cp_print_static_field (TYPE_FIELD_TYPE (type, i),
-                                          v, stream, recurse + 1,
-                                          options);
+                 cp_print_static_field (TYPE_FIELD_TYPE (type, i),
+                                        v, stream, recurse + 1,
+                                        options);
+               }
+             else if (i == vptr_fieldno && type == vptr_basetype)
+               {
+                 int i_offset = offset + TYPE_FIELD_BITPOS (type, i) / 8;
+                 struct type *i_type = TYPE_FIELD_TYPE (type, i);
+
+                 if (valprint_check_validity (stream, i_type, i_offset, val))
+                   {
+                     CORE_ADDR addr;
+                     
+                     addr = extract_typed_address (valaddr + i_offset, i_type);
+                     print_function_pointer_address (options,
+                                                     get_type_arch (type),
+                                                     addr, stream);
+                   }
                }
              else
                {
@@ -410,7 +404,7 @@ cp_print_value_fields (struct type *type, struct type *real_type,
            }
        }
 
-      if (options->pretty)
+      if (options->prettyformat)
        {
          fprintf_filtered (stream, "\n");
          print_spaces_filtered (2 * recurse, stream);
@@ -495,7 +489,7 @@ cp_print_value (struct type *type, struct type *real_type,
       int boffset = 0;
       int skip;
       struct type *baseclass = check_typedef (TYPE_BASECLASS (type, i));
-      char *basename = TYPE_NAME (baseclass);
+      const char *basename = TYPE_NAME (baseclass);
       const gdb_byte *base_valaddr = NULL;
       const struct value *base_val = NULL;
       volatile struct gdb_exception ex;
@@ -539,9 +533,11 @@ cp_print_value (struct type *type, struct type *real_type,
              if ((boffset + offset) < 0
                  || (boffset + offset) >= TYPE_LENGTH (real_type))
                {
-                 /* FIXME (alloca): unsafe if baseclass is really
-                    really large.  */
-                 gdb_byte *buf = alloca (TYPE_LENGTH (baseclass));
+                 gdb_byte *buf;
+                 struct cleanup *back_to;
+
+                 buf = xmalloc (TYPE_LENGTH (baseclass));
+                 back_to = make_cleanup (xfree, buf);
 
                  if (target_read_memory (address + boffset, buf,
                                          TYPE_LENGTH (baseclass)) != 0)
@@ -553,6 +549,7 @@ cp_print_value (struct type *type, struct type *real_type,
                  boffset = 0;
                  thistype = baseclass;
                  base_valaddr = value_contents_for_printing_const (base_val);
+                 do_cleanups (back_to);
                }
              else
                {
@@ -568,7 +565,7 @@ cp_print_value (struct type *type, struct type *real_type,
        }
 
       /* Now do the printing.  */
-      if (options->pretty)
+      if (options->prettyformat)
        {
          fprintf_filtered (stream, "\n");
          print_spaces_filtered (2 * recurse, stream);
@@ -587,17 +584,17 @@ cp_print_value (struct type *type, struct type *real_type,
        {
          int result = 0;
 
-         /* Attempt to run the Python pretty-printers on the
+         /* Attempt to run an extension language pretty-printer on the
             baseclass if possible.  */
          if (!options->raw)
-           result = apply_val_pretty_printer (baseclass, base_valaddr,
-                                              thisoffset + boffset,
-                                              value_address (base_val),
-                                              stream, recurse, base_val,
-                                              options, current_language);
+           result
+             = apply_ext_lang_val_pretty_printer (baseclass, base_valaddr,
+                                                  thisoffset + boffset,
+                                                  value_address (base_val),
+                                                  stream, recurse,
+                                                  base_val, options,
+                                                  current_language);
 
-
-                 
          if (!result)
            cp_print_value_fields (baseclass, thistype, base_valaddr,
                                   thisoffset + boffset,
@@ -640,7 +637,13 @@ cp_print_static_field (struct type *type,
                       const struct value_print_options *options)
 {
   struct value_print_options opts;
-  
+
+  if (value_entirely_optimized_out (val))
+    {
+      val_print_optimized_out (val, stream);
+      return;
+    }
+
   if (TYPE_CODE (type) == TYPE_CODE_STRUCT)
     {
       CORE_ADDR *first_dont_print;
@@ -768,7 +771,7 @@ cp_print_class_member (const gdb_byte *valaddr, struct type *type,
      print it.  */
   struct type *domain = TYPE_DOMAIN_TYPE (type);
   LONGEST val;
-  unsigned int fieldno;
+  int fieldno;
 
   val = extract_signed_integer (valaddr,
                                TYPE_LENGTH (type),
@@ -794,14 +797,14 @@ cp_print_class_member (const gdb_byte *valaddr, struct type *type,
 
   if (domain != NULL)
     {
-      char *name;
+      const char *name;
 
       fputs_filtered (prefix, stream);
       name = type_name_no_tag (domain);
       if (name)
        fputs_filtered (name, stream);
       else
-       c_type_print_base (domain, stream, 0, 0);
+       c_type_print_base (domain, stream, 0, 0, &type_print_raw_options);
       fprintf_filtered (stream, "::");
       fputs_filtered (TYPE_FIELD_NAME (domain, fieldno), stream);
     }
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