[thirdparty/binutils-gdb.git] / gdb / jv-typeprint.c

/* Support for printing Java types for GDB, the GNU debugger.
   Copyright 1997, 1998, 1999 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 2 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, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */


#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"

static void
java_type_print_derivation_info (stream, type)
     GDB_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.  */

void
java_type_print_base (type, stream, show, level)
     struct type *type;
     GDB_FILE *stream;
     int show;
     int level;
{
  register int i;
  register 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);
	  free (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_FLAGS (type) & TYPE_FLAG_STUB)
		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 (STREQN (TYPE_FIELD_NAME (type, i), "_vptr", 5)
		  && is_cplus_marker ((TYPE_FIELD_NAME (type, i))[5]))
		continue;

	      /* Don't print the dummy field "class". */
	      if (STREQN (TYPE_FIELD_NAME (type, i), "class", 5))
		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 (TYPE_FIELD_STATIC (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 && STREQ (method_name, name);

	      for (j = 0; j < n_overloads; j++)
		{
		  char *physname;
		  int is_full_physname_constructor;

		  physname = TYPE_FN_FIELD_PHYSNAME (f, j);

		  is_full_physname_constructor = 
		    ((physname[0] == '_' && physname[1] == '_'
		      && strchr ("0123456789Qt", physname[2]))
		     || STREQN (physname, "__ct__", 6)
		     || DESTRUCTOR_PREFIX_P (physname)
		     || STREQN (physname, "__dt__", 6));

		  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 = TYPE_FN_FIELD_PHYSNAME (f, j);

		  demangled_name =
		    cplus_demangle (mangled_name,
				    DMGL_ANSI | DMGL_PARAMS | DMGL_JAVA);

		  if (demangled_name == NULL)
		    demangled_name = strdup (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);
		    free (demangled_name);
		  }

		  if (TYPE_FN_FIELD_STUB (f, j))
		    free (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 PARAMS ((struct type *, GDB_FILE *, int, int, int));

void
java_print_type (type, varstring, stream, show, level)
     struct type *type;
     char *varstring;
     GDB_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 = strchr(varstring, '(') != NULL;
  c_type_print_varspec_suffix (type, stream, show, 0, demangled_args);
}
Commit	Line	Data
c906108c SS	1	/* Support for printing Java types for GDB, the GNU debugger.
	2	Copyright 1997, 1998, 1999 Free Software Foundation, Inc.
	3
	4	This file is part of GDB.
	5
	6	This program is free software; you can redistribute it and/or modify
	7	it under the terms of the GNU General Public License as published by
	8	the Free Software Foundation; either version 2 of the License, or
	9	(at your option) any later version.
	10
	11	This program is distributed in the hope that it will be useful,
	12	but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	14	GNU General Public License for more details.
	15
	16	You should have received a copy of the GNU General Public License
	17	along with this program; if not, write to the Free Software
	18	Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
	19
	20
	21	#include "defs.h"
	22	#include "symtab.h"
	23	#include "gdbtypes.h"
	24	#include "value.h"
	25	#include "demangle.h"
	26	#include "jv-lang.h"
	27	#include "gdb_string.h"
	28	#include "typeprint.h"
7a292a7a	29	#include "c-lang.h"
c906108c SS	30
	31	static void
	32	java_type_print_derivation_info (stream, type)
	33	GDB_FILE *stream;
	34	struct type *type;
	35	{
	36	char *name;
	37	int i;
	38	int n_bases;
	39	int prev;
	40
	41	n_bases = TYPE_N_BASECLASSES (type);
	42
	43	for (i = 0, prev = 0; i < n_bases; i++)
	44	{
	45	int kind;
	46
	47	kind = BASETYPE_VIA_VIRTUAL(type, i) ? 'I' : 'E';
	48
	49	fputs_filtered (kind == prev ? ", "
	50	: kind == 'I' ? " implements "
	51	: " extends ",
	52	stream);
	53	prev = kind;
	54	name = type_name_no_tag (TYPE_BASECLASS (type, i));
	55
	56	fprintf_filtered (stream, "%s", name ? name : "(null)");
	57	}
	58
	59	if (i > 0)
	60	fputs_filtered (" ", stream);
	61	}
	62
	63	/* Print the name of the type (or the ultimate pointer target,
	64	function value or array element), or the description of a
	65	structure or union.
	66
	67	SHOW positive means print details about the type (e.g. enum values),
	68	and print structure elements passing SHOW - 1 for show.
	69	SHOW negative means just print the type name or struct tag if there is one.
	70	If there is no name, print something sensible but concise like
	71	"struct {...}".
	72	SHOW zero means just print the type name or struct tag if there is one.
	73	If there is no name, print something sensible but not as concise like
	74	"struct {int x; int y;}".
	75
	76	LEVEL is the number of spaces to indent by.
	77	We increase it for some recursive calls. */
	78
	79	void
	80	java_type_print_base (type, stream, show, level)
	81	struct type *type;
	82	GDB_FILE *stream;
	83	int show;
	84	int level;
	85	{
	86	register int i;
	87	register int len;
	88	char *mangled_name;
	89	char *demangled_name;
	90	QUIT;
	91
	92	wrap_here (" ");
	93
94	if (type == NULL)
95	{
96	fputs_filtered ("<type unknown>", stream);
97	return;
98	}
99
100	/* When SHOW is zero or less, and there is a valid type name, then always
101	just print the type name directly from the type. */
102
103	if (show <= 0
104	&& TYPE_NAME (type) != NULL)
105	{
106	fputs_filtered (TYPE_NAME (type), stream);
107	return;
108	}
109
110	CHECK_TYPEDEF (type);
111
112	switch (TYPE_CODE (type))
113	{
114	case TYPE_CODE_PTR:
115	java_type_print_base (TYPE_TARGET_TYPE (type), stream, show, level);
116	break;
117
118	case TYPE_CODE_STRUCT:
119	if (TYPE_TAG_NAME (type) != NULL && TYPE_TAG_NAME (type)[0] == '[')
120	{ /* array type */
121	char *name = java_demangle_type_signature (TYPE_TAG_NAME (type));
122	fputs_filtered (name, stream);
123	free (name);
124	break;
125	}
126
127	if (show >= 0)
128	fprintf_filtered (stream, "class ");
129
130	if (TYPE_TAG_NAME (type) != NULL)
131	{
132	fputs_filtered (TYPE_TAG_NAME (type), stream);
133	if (show > 0)
134	fputs_filtered (" ", stream);
135	}
136
137	wrap_here (" ");
138
139	if (show < 0)
140	{
141	/* If we just printed a tag name, no need to print anything else. */
142	if (TYPE_TAG_NAME (type) == NULL)
143	fprintf_filtered (stream, "{...}");
144	}
145	else if (show > 0 \|\| TYPE_TAG_NAME (type) == NULL)
146	{
147	java_type_print_derivation_info (stream, type);
148
149	fprintf_filtered (stream, "{\n");
150	if ((TYPE_NFIELDS (type) == 0) && (TYPE_NFN_FIELDS (type) == 0))
7a292a7a SS	151	{
	152	if (TYPE_FLAGS (type) & TYPE_FLAG_STUB)
	153	fprintfi_filtered (level + 4, stream, "<incomplete type>\n");
	154	else
	155	fprintfi_filtered (level + 4, stream, "<no data fields>\n");
	156	}
c906108c SS	157
	158	/* If there is a base class for this type,
	159	do not print the field that it occupies. */
	160
	161	len = TYPE_NFIELDS (type);
	162	for (i = TYPE_N_BASECLASSES (type); i < len; i++)
	163	{
	164	QUIT;
	165	/* Don't print out virtual function table. */
	166	if (STREQN (TYPE_FIELD_NAME (type, i), "_vptr", 5)
	167	&& is_cplus_marker ((TYPE_FIELD_NAME (type, i))[5]))
	168	continue;
	169
	170	/* Don't print the dummy field "class". */
	171	if (STREQN (TYPE_FIELD_NAME (type, i), "class", 5))
	172	continue;
	173
	174	print_spaces_filtered (level + 4, stream);
	175
	176	if (HAVE_CPLUS_STRUCT (type))
7a292a7a SS	177	{
	178	if (TYPE_FIELD_PROTECTED (type, i))
	179	fprintf_filtered (stream, "protected ");
	180	else if (TYPE_FIELD_PRIVATE (type, i))
	181	fprintf_filtered (stream, "private ");
	182	else
	183	fprintf_filtered (stream, "public ");
	184	}
c906108c SS	185
	186	if (TYPE_FIELD_STATIC (type, i))
	187	fprintf_filtered (stream, "static ");
	188
	189	java_print_type (TYPE_FIELD_TYPE (type, i),
	190	TYPE_FIELD_NAME (type, i),
	191	stream, show - 1, level + 4);
	192
	193	fprintf_filtered (stream, ";\n");
	194	}
	195
	196	/* If there are both fields and methods, put a space between. */
	197	len = TYPE_NFN_FIELDS (type);
	198	if (len)
	199	fprintf_filtered (stream, "\n");
	200
	201	/* Print out the methods */
	202
	203	for (i = 0; i < len; i++)
	204	{
	205	struct fn_field *f;
	206	int j;
	207	char *method_name;
	208	char *name;
	209	int is_constructor;
	210	int n_overloads;
	211
	212	f = TYPE_FN_FIELDLIST1 (type, i);
	213	n_overloads = TYPE_FN_FIELDLIST_LENGTH (type, i);
	214	method_name = TYPE_FN_FIELDLIST_NAME (type, i);
	215	name = type_name_no_tag (type);
	216	is_constructor = name && STREQ (method_name, name);
	217
	218	for (j = 0; j < n_overloads; j++)
	219	{
	220	char *physname;
	221	int is_full_physname_constructor;
	222
	223	physname = TYPE_FN_FIELD_PHYSNAME (f, j);
	224
	225	is_full_physname_constructor =
	226	((physname[0] == '_' && physname[1] == '_'
	227	&& strchr ("0123456789Qt", physname[2]))
	228	\|\| STREQN (physname, "__ct__", 6)
	229	\|\| DESTRUCTOR_PREFIX_P (physname)
	230	\|\| STREQN (physname, "__dt__", 6));
	231
	232	QUIT;
	233
	234	print_spaces_filtered (level + 4, stream);
	235
	236	if (TYPE_FN_FIELD_PROTECTED (f, j))
	237	fprintf_filtered (stream, "protected ");
	238	else if (TYPE_FN_FIELD_PRIVATE (f, j))
	239	fprintf_filtered (stream, "private ");
	240	else if (TYPE_FN_FIELD_PUBLIC (f, j))
	241	fprintf_filtered (stream, "public ");
	242
	243	if (TYPE_FN_FIELD_ABSTRACT (f, j))
	244	fprintf_filtered (stream, "abstract ");
	245	if (TYPE_FN_FIELD_STATIC (f, j))
	246	fprintf_filtered (stream, "static ");
	247	if (TYPE_FN_FIELD_FINAL (f, j))
	248	fprintf_filtered (stream, "final ");
249	if (TYPE_FN_FIELD_SYNCHRONIZED (f, j))
250	fprintf_filtered (stream, "synchronized ");
251	if (TYPE_FN_FIELD_NATIVE (f, j))
252	fprintf_filtered (stream, "native ");
253
254	if (TYPE_TARGET_TYPE (TYPE_FN_FIELD_TYPE (f, j)) == 0)
255	{
256	/* Keep GDB from crashing here. */
257	fprintf_filtered (stream, "<undefined type> %s;\n",
258	TYPE_FN_FIELD_PHYSNAME (f, j));
259	break;
260	}
261	else if (!is_constructor && !is_full_physname_constructor)
262	{
263	type_print (TYPE_TARGET_TYPE (TYPE_FN_FIELD_TYPE (f, j)),
264	"", stream, -1);
265	fputs_filtered (" ", stream);
266	}
267
268	if (TYPE_FN_FIELD_STUB (f, j))
269	/* Build something we can demangle. */
270	mangled_name = gdb_mangle_name (type, i, j);
271	else
272	mangled_name = TYPE_FN_FIELD_PHYSNAME (f, j);
273
274	demangled_name =
275	cplus_demangle (mangled_name,
276	DMGL_ANSI \| DMGL_PARAMS \| DMGL_JAVA);
277
278	if (demangled_name == NULL)
279	demangled_name = strdup (mangled_name);
280
281	{
282	char *demangled_no_class;
283	char *ptr;
284
285	ptr = demangled_no_class = demangled_name;
286
287	while (1)
288	{
289	char c;
290
291	c = *ptr++;
292
293	if (c == 0 \|\| c == '(')
294	break;
295	if (c == '.')
296	demangled_no_class = ptr;
297	}
298
299	fputs_filtered (demangled_no_class, stream);
300	free (demangled_name);
301	}
302
303	if (TYPE_FN_FIELD_STUB (f, j))
304	free (mangled_name);
305
306	fprintf_filtered (stream, ";\n");
307	}
308	}
309
310	fprintfi_filtered (level, stream, "}");
311	}
312	break;
313
314	default:
315	c_type_print_base (type, stream, show, level);
316	}
317	}
318
319	/* LEVEL is the depth to indent lines by. */
320
7a292a7a SS	321	extern void
	322	c_type_print_varspec_suffix PARAMS ((struct type , GDB_FILE , int, int, int));
	323
c906108c SS	324	void
	325	java_print_type (type, varstring, stream, show, level)
	326	struct type *type;
	327	char *varstring;
	328	GDB_FILE *stream;
	329	int show;
	330	int level;
	331	{
	332	int demangled_args;
	333
	334	java_type_print_base (type, stream, show, level);
	335
	336	if (varstring != NULL && *varstring != '\0')
	337	{
	338	fputs_filtered (" ", stream);
	339	fputs_filtered (varstring, stream);
	340	}
	341
	342	/* For demangled function names, we have the arglist as part of the name,
	343	so don't print an additional pair of ()'s */
	344
	345	demangled_args = strchr(varstring, '(') != NULL;
	346	c_type_print_varspec_suffix (type, stream, show, 0, demangled_args);
	347	}