Subversion Repositories openrisc_2011-10-31

/* Support for printing Java types for GDB, the GNU debugger.

   Copyright (C) 1997, 1998, 1999, 2000, 2007, 2008, 2009, 2010

   Free Software Foundation, Inc.

   This file is part of GDB.

   This program 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 of the License, or

   (at your option) any later version.

   This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.  */

#include "defs.h"

#include "symtab.h"

#include "gdbtypes.h"

#include "value.h"

#include "demangle.h"

#include "jv-lang.h"

#include "gdb_string.h"

#include "typeprint.h"

#include "c-lang.h"

#include "cp-abi.h"

#include "gdb_assert.h"

/* Local functions */

static void java_type_print_base (struct type * type,

                                  struct ui_file *stream, int show,

                                  int level);

static void

java_type_print_derivation_info (struct ui_file *stream, struct type *type)

{

  char *name;

  int i;

  int n_bases;

  int prev;

  n_bases = TYPE_N_BASECLASSES (type);

  for (i = 0, prev = 0; i < n_bases; i++)

    {

      int kind;

      kind = BASETYPE_VIA_VIRTUAL (type, i) ? 'I' : 'E';

      fputs_filtered (kind == prev ? ", "

                      : kind == 'I' ? " implements "

                      : " extends ",

                      stream);

      prev = kind;

      name = type_name_no_tag (TYPE_BASECLASS (type, i));

      fprintf_filtered (stream, "%s", name ? name : "(null)");

    }

  if (i > 0)

    fputs_filtered (" ", stream);

}

/* Print the name of the type (or the ultimate pointer target,

   function value or array element), or the description of a

   structure or union.

   SHOW positive means print details about the type (e.g. enum values),

   and print structure elements passing SHOW - 1 for show.

   SHOW negative means just print the type name or struct tag if there is one.

   If there is no name, print something sensible but concise like

   "struct {...}".

   SHOW zero means just print the type name or struct tag if there is one.

   If there is no name, print something sensible but not as concise like

   "struct {int x; int y;}".

   LEVEL is the number of spaces to indent by.

   We increase it for some recursive calls.  */

static void

java_type_print_base (struct type *type, struct ui_file *stream, int show,

                      int level)

{

  int i;

  int len;

  char *mangled_name;

  char *demangled_name;

  QUIT;

  wrap_here ("    ");

  if (type == NULL)

    {

      fputs_filtered ("<type unknown>", stream);

      return;

    }

  /* When SHOW is zero or less, and there is a valid type name, then always

     just print the type name directly from the type.  */

  if (show <= 0

      && TYPE_NAME (type) != NULL)

    {

      fputs_filtered (TYPE_NAME (type), stream);

      return;

    }

  CHECK_TYPEDEF (type);

  switch (TYPE_CODE (type))

    {

    case TYPE_CODE_PTR:

      java_type_print_base (TYPE_TARGET_TYPE (type), stream, show, level);

      break;

    case TYPE_CODE_STRUCT:

      if (TYPE_TAG_NAME (type) != NULL && TYPE_TAG_NAME (type)[0] == '[')

        {                       /* array type */

          char *name = java_demangle_type_signature (TYPE_TAG_NAME (type));

          fputs_filtered (name, stream);

          xfree (name);

          break;

        }

      if (show >= 0)

        fprintf_filtered (stream, "class ");

      if (TYPE_TAG_NAME (type) != NULL)

        {

          fputs_filtered (TYPE_TAG_NAME (type), stream);

          if (show > 0)

            fputs_filtered (" ", stream);

        }

      wrap_here ("    ");

      if (show < 0)

        {

          /* If we just printed a tag name, no need to print anything else.  */

          if (TYPE_TAG_NAME (type) == NULL)

            fprintf_filtered (stream, "{...}");

        }

      else if (show > 0 || TYPE_TAG_NAME (type) == NULL)

        {

          java_type_print_derivation_info (stream, type);

          fprintf_filtered (stream, "{\n");

          if ((TYPE_NFIELDS (type) == 0) && (TYPE_NFN_FIELDS (type) == 0))

            {

              if (TYPE_STUB (type))

                fprintfi_filtered (level + 4, stream, "<incomplete type>\n");

              else

                fprintfi_filtered (level + 4, stream, "<no data fields>\n");

            }

          /* If there is a base class for this type,

             do not print the field that it occupies.  */

          len = TYPE_NFIELDS (type);

          for (i = TYPE_N_BASECLASSES (type); i < len; i++)

            {

              QUIT;

              /* Don't print out virtual function table.  */

              if (strncmp (TYPE_FIELD_NAME (type, i), "_vptr", 5) == 0

                  && is_cplus_marker ((TYPE_FIELD_NAME (type, i))[5]))

                continue;

              /* Don't print the dummy field "class". */

              if (strncmp (TYPE_FIELD_NAME (type, i), "class", 5) == 0)

                continue;

              print_spaces_filtered (level + 4, stream);

              if (HAVE_CPLUS_STRUCT (type))

                {

                  if (TYPE_FIELD_PROTECTED (type, i))

                    fprintf_filtered (stream, "protected ");

                  else if (TYPE_FIELD_PRIVATE (type, i))

                    fprintf_filtered (stream, "private ");

                  else

                    fprintf_filtered (stream, "public ");

                }

              if (field_is_static (&TYPE_FIELD (type, i)))

                fprintf_filtered (stream, "static ");

              java_print_type (TYPE_FIELD_TYPE (type, i),

                               TYPE_FIELD_NAME (type, i),

                               stream, show - 1, level + 4);

              fprintf_filtered (stream, ";\n");

            }

          /* If there are both fields and methods, put a space between. */

          len = TYPE_NFN_FIELDS (type);

          if (len)

            fprintf_filtered (stream, "\n");

          /* Print out the methods */

          for (i = 0; i < len; i++)

            {

              struct fn_field *f;

              int j;

              char *method_name;

              char *name;

              int is_constructor;

              int n_overloads;

              f = TYPE_FN_FIELDLIST1 (type, i);

              n_overloads = TYPE_FN_FIELDLIST_LENGTH (type, i);

              method_name = TYPE_FN_FIELDLIST_NAME (type, i);

              name = type_name_no_tag (type);

              is_constructor = name && strcmp (method_name, name) == 0;

              for (j = 0; j < n_overloads; j++)

                {

                  char *real_physname, *physname, *p;

                  int is_full_physname_constructor;

                  real_physname = TYPE_FN_FIELD_PHYSNAME (f, j);

                  /* The physname will contain the return type

                     after the final closing parenthesis.  Strip it off.  */

                  p = strrchr (real_physname, ')');

                  gdb_assert (p != NULL);

                  ++p;   /* Keep the trailing ')'.  */

                  physname = alloca (p - real_physname + 1);

                  memcpy (physname, real_physname, p - real_physname);

                  physname[p - real_physname] = '\0';

                  is_full_physname_constructor

                    = (is_constructor_name (physname)

                       || is_destructor_name (physname));

                  QUIT;

                  print_spaces_filtered (level + 4, stream);

                  if (TYPE_FN_FIELD_PROTECTED (f, j))

                    fprintf_filtered (stream, "protected ");

                  else if (TYPE_FN_FIELD_PRIVATE (f, j))

                    fprintf_filtered (stream, "private ");

                  else if (TYPE_FN_FIELD_PUBLIC (f, j))

                    fprintf_filtered (stream, "public ");

                  if (TYPE_FN_FIELD_ABSTRACT (f, j))

                    fprintf_filtered (stream, "abstract ");

                  if (TYPE_FN_FIELD_STATIC (f, j))

                    fprintf_filtered (stream, "static ");

                  if (TYPE_FN_FIELD_FINAL (f, j))

                    fprintf_filtered (stream, "final ");

                  if (TYPE_FN_FIELD_SYNCHRONIZED (f, j))

                    fprintf_filtered (stream, "synchronized ");

                  if (TYPE_FN_FIELD_NATIVE (f, j))

                    fprintf_filtered (stream, "native ");

                  if (TYPE_TARGET_TYPE (TYPE_FN_FIELD_TYPE (f, j)) == 0)

                    {

                      /* Keep GDB from crashing here.  */

                      fprintf_filtered (stream, "<undefined type> %s;\n",

                                        TYPE_FN_FIELD_PHYSNAME (f, j));

                      break;

                    }

                  else if (!is_constructor && !is_full_physname_constructor)

                    {

                      type_print (TYPE_TARGET_TYPE (TYPE_FN_FIELD_TYPE (f, j)),

                                  "", stream, -1);

                      fputs_filtered (" ", stream);

                    }

                  if (TYPE_FN_FIELD_STUB (f, j))

                    /* Build something we can demangle.  */

                    mangled_name = gdb_mangle_name (type, i, j);

                  else

                    mangled_name = physname;

                  demangled_name =

                    cplus_demangle (mangled_name,

                                    DMGL_ANSI | DMGL_PARAMS | DMGL_JAVA);

                  if (demangled_name == NULL)

                    demangled_name = xstrdup (mangled_name);

                  {

                    char *demangled_no_class;

                    char *ptr;

                    ptr = demangled_no_class = demangled_name;

                    while (1)

                      {

                        char c;

                        c = *ptr++;

                        if (c == 0 || c == '(')

                          break;

                        if (c == '.')

                          demangled_no_class = ptr;

                      }

                    fputs_filtered (demangled_no_class, stream);

                    xfree (demangled_name);

                  }

                  if (TYPE_FN_FIELD_STUB (f, j))

                    xfree (mangled_name);

                  fprintf_filtered (stream, ";\n");

                }

            }

          fprintfi_filtered (level, stream, "}");

        }

      break;

    default:

      c_type_print_base (type, stream, show, level);

    }

}

/* LEVEL is the depth to indent lines by.  */

extern void c_type_print_varspec_suffix (struct type *, struct ui_file *,

                                         int, int, int);

void

java_print_type (struct type *type, const char *varstring,

                 struct ui_file *stream, int show, int level)

{

  int demangled_args;

  java_type_print_base (type, stream, show, level);

  if (varstring != NULL && *varstring != '\0')

    {

      fputs_filtered (" ", stream);

      fputs_filtered (varstring, stream);

    }

  /* For demangled function names, we have the arglist as part of the name,

     so don't print an additional pair of ()'s */

  demangled_args = varstring != NULL && strchr (varstring, '(') != NULL;

  c_type_print_varspec_suffix (type, stream, show, 0, demangled_args);

}