343 lines
9.0 KiB
C
343 lines
9.0 KiB
C
/* Support for printing Java types for GDB, the GNU debugger.
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Copyright (C) 1997, 1998, 1999, 2000, 2007, 2008, 2009, 2010
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Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include "defs.h"
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#include "symtab.h"
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#include "gdbtypes.h"
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#include "value.h"
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#include "demangle.h"
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#include "jv-lang.h"
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#include "gdb_string.h"
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#include "typeprint.h"
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#include "c-lang.h"
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#include "cp-abi.h"
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/* Local functions */
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static void java_type_print_base (struct type * type,
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struct ui_file *stream, int show,
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int level);
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static void
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java_type_print_derivation_info (struct ui_file *stream, struct type *type)
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{
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char *name;
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int i;
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int n_bases;
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int prev;
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n_bases = TYPE_N_BASECLASSES (type);
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for (i = 0, prev = 0; i < n_bases; i++)
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{
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int kind;
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kind = BASETYPE_VIA_VIRTUAL (type, i) ? 'I' : 'E';
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fputs_filtered (kind == prev ? ", "
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: kind == 'I' ? " implements "
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: " extends ",
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stream);
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prev = kind;
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name = type_name_no_tag (TYPE_BASECLASS (type, i));
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fprintf_filtered (stream, "%s", name ? name : "(null)");
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}
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if (i > 0)
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fputs_filtered (" ", stream);
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}
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/* Print the name of the type (or the ultimate pointer target,
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function value or array element), or the description of a
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structure or union.
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SHOW positive means print details about the type (e.g. enum values),
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and print structure elements passing SHOW - 1 for show.
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SHOW negative means just print the type name or struct tag if there is one.
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If there is no name, print something sensible but concise like
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"struct {...}".
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SHOW zero means just print the type name or struct tag if there is one.
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If there is no name, print something sensible but not as concise like
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"struct {int x; int y;}".
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LEVEL is the number of spaces to indent by.
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We increase it for some recursive calls. */
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static void
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java_type_print_base (struct type *type, struct ui_file *stream, int show,
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int level)
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{
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int i;
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int len;
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char *mangled_name;
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char *demangled_name;
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QUIT;
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wrap_here (" ");
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if (type == NULL)
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{
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fputs_filtered ("<type unknown>", stream);
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return;
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}
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/* When SHOW is zero or less, and there is a valid type name, then always
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just print the type name directly from the type. */
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if (show <= 0
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&& TYPE_NAME (type) != NULL)
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{
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fputs_filtered (TYPE_NAME (type), stream);
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return;
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}
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CHECK_TYPEDEF (type);
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switch (TYPE_CODE (type))
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{
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case TYPE_CODE_PTR:
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java_type_print_base (TYPE_TARGET_TYPE (type), stream, show, level);
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break;
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case TYPE_CODE_STRUCT:
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if (TYPE_TAG_NAME (type) != NULL && TYPE_TAG_NAME (type)[0] == '[')
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{ /* array type */
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char *name = java_demangle_type_signature (TYPE_TAG_NAME (type));
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fputs_filtered (name, stream);
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xfree (name);
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break;
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}
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if (show >= 0)
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fprintf_filtered (stream, "class ");
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if (TYPE_TAG_NAME (type) != NULL)
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{
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fputs_filtered (TYPE_TAG_NAME (type), stream);
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if (show > 0)
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fputs_filtered (" ", stream);
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}
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wrap_here (" ");
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if (show < 0)
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{
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/* If we just printed a tag name, no need to print anything else. */
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if (TYPE_TAG_NAME (type) == NULL)
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fprintf_filtered (stream, "{...}");
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}
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else if (show > 0 || TYPE_TAG_NAME (type) == NULL)
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{
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java_type_print_derivation_info (stream, type);
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fprintf_filtered (stream, "{\n");
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if ((TYPE_NFIELDS (type) == 0) && (TYPE_NFN_FIELDS (type) == 0))
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{
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if (TYPE_STUB (type))
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fprintfi_filtered (level + 4, stream, "<incomplete type>\n");
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else
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fprintfi_filtered (level + 4, stream, "<no data fields>\n");
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}
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/* If there is a base class for this type,
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do not print the field that it occupies. */
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len = TYPE_NFIELDS (type);
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for (i = TYPE_N_BASECLASSES (type); i < len; i++)
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{
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QUIT;
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/* Don't print out virtual function table. */
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if (strncmp (TYPE_FIELD_NAME (type, i), "_vptr", 5) == 0
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&& is_cplus_marker ((TYPE_FIELD_NAME (type, i))[5]))
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continue;
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/* Don't print the dummy field "class". */
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if (strncmp (TYPE_FIELD_NAME (type, i), "class", 5) == 0)
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continue;
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print_spaces_filtered (level + 4, stream);
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if (HAVE_CPLUS_STRUCT (type))
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{
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if (TYPE_FIELD_PROTECTED (type, i))
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fprintf_filtered (stream, "protected ");
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else if (TYPE_FIELD_PRIVATE (type, i))
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fprintf_filtered (stream, "private ");
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else
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fprintf_filtered (stream, "public ");
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}
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if (field_is_static (&TYPE_FIELD (type, i)))
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fprintf_filtered (stream, "static ");
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java_print_type (TYPE_FIELD_TYPE (type, i),
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TYPE_FIELD_NAME (type, i),
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stream, show - 1, level + 4);
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fprintf_filtered (stream, ";\n");
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}
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/* If there are both fields and methods, put a space between. */
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len = TYPE_NFN_FIELDS (type);
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if (len)
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fprintf_filtered (stream, "\n");
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/* Print out the methods */
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for (i = 0; i < len; i++)
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{
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struct fn_field *f;
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int j;
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char *method_name;
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char *name;
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int is_constructor;
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int n_overloads;
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f = TYPE_FN_FIELDLIST1 (type, i);
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n_overloads = TYPE_FN_FIELDLIST_LENGTH (type, i);
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method_name = TYPE_FN_FIELDLIST_NAME (type, i);
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name = type_name_no_tag (type);
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is_constructor = name && strcmp (method_name, name) == 0;
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for (j = 0; j < n_overloads; j++)
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{
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char *physname;
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int is_full_physname_constructor;
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physname = TYPE_FN_FIELD_PHYSNAME (f, j);
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is_full_physname_constructor
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= (is_constructor_name (physname)
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|| is_destructor_name (physname));
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QUIT;
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print_spaces_filtered (level + 4, stream);
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if (TYPE_FN_FIELD_PROTECTED (f, j))
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fprintf_filtered (stream, "protected ");
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else if (TYPE_FN_FIELD_PRIVATE (f, j))
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fprintf_filtered (stream, "private ");
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else if (TYPE_FN_FIELD_PUBLIC (f, j))
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fprintf_filtered (stream, "public ");
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if (TYPE_FN_FIELD_ABSTRACT (f, j))
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fprintf_filtered (stream, "abstract ");
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if (TYPE_FN_FIELD_STATIC (f, j))
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fprintf_filtered (stream, "static ");
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if (TYPE_FN_FIELD_FINAL (f, j))
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fprintf_filtered (stream, "final ");
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if (TYPE_FN_FIELD_SYNCHRONIZED (f, j))
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fprintf_filtered (stream, "synchronized ");
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if (TYPE_FN_FIELD_NATIVE (f, j))
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fprintf_filtered (stream, "native ");
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if (TYPE_TARGET_TYPE (TYPE_FN_FIELD_TYPE (f, j)) == 0)
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{
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/* Keep GDB from crashing here. */
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fprintf_filtered (stream, "<undefined type> %s;\n",
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TYPE_FN_FIELD_PHYSNAME (f, j));
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break;
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}
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else if (!is_constructor && !is_full_physname_constructor)
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{
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type_print (TYPE_TARGET_TYPE (TYPE_FN_FIELD_TYPE (f, j)),
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"", stream, -1);
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fputs_filtered (" ", stream);
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}
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if (TYPE_FN_FIELD_STUB (f, j))
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/* Build something we can demangle. */
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mangled_name = gdb_mangle_name (type, i, j);
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else
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mangled_name = TYPE_FN_FIELD_PHYSNAME (f, j);
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demangled_name =
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cplus_demangle (mangled_name,
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DMGL_ANSI | DMGL_PARAMS | DMGL_JAVA);
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if (demangled_name == NULL)
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demangled_name = xstrdup (mangled_name);
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{
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char *demangled_no_class;
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char *ptr;
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ptr = demangled_no_class = demangled_name;
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while (1)
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{
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char c;
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c = *ptr++;
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if (c == 0 || c == '(')
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break;
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if (c == '.')
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demangled_no_class = ptr;
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}
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fputs_filtered (demangled_no_class, stream);
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xfree (demangled_name);
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}
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if (TYPE_FN_FIELD_STUB (f, j))
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xfree (mangled_name);
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fprintf_filtered (stream, ";\n");
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}
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}
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fprintfi_filtered (level, stream, "}");
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}
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break;
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default:
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c_type_print_base (type, stream, show, level);
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}
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}
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/* LEVEL is the depth to indent lines by. */
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extern void c_type_print_varspec_suffix (struct type *, struct ui_file *,
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int, int, int);
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void
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java_print_type (struct type *type, char *varstring, struct ui_file *stream,
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int show, int level)
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{
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int demangled_args;
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java_type_print_base (type, stream, show, level);
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if (varstring != NULL && *varstring != '\0')
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{
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fputs_filtered (" ", stream);
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fputs_filtered (varstring, stream);
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}
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/* For demangled function names, we have the arglist as part of the name,
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so don't print an additional pair of ()'s */
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demangled_args = varstring != NULL && strchr (varstring, '(') != NULL;
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c_type_print_varspec_suffix (type, stream, show, 0, demangled_args);
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}
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