502 lines
13 KiB
C
502 lines
13 KiB
C
/* MI Command Set - varobj commands.
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Copyright 2000 Free Software Foundation, Inc.
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Contributed by Cygnus Solutions (a Red Hat company).
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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 2 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, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include "defs.h"
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#include "mi-cmds.h"
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#include "ui-out.h"
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#include "mi-out.h"
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#include "varobj.h"
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#include "value.h"
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#include <ctype.h>
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/* Convenience macro for allocting typesafe memory. */
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#undef XMALLOC
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#define XMALLOC(TYPE) (TYPE*) xmalloc (sizeof (TYPE))
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extern int varobjdebug; /* defined in varobj.c */
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static int varobj_update_one (struct varobj *var);
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/* VAROBJ operations */
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enum mi_cmd_result
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mi_cmd_var_create (char *command, char **argv, int argc)
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{
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CORE_ADDR frameaddr = 0;
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struct varobj *var;
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char *name;
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char *frame;
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char *expr;
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char *type;
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struct cleanup *old_cleanups;
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enum varobj_type var_type;
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if (argc != 3)
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{
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/* xasprintf (&mi_error_message,
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"mi_cmd_var_create: Usage: .");
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return MI_CMD_ERROR; */
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error ("mi_cmd_var_create: Usage: NAME FRAME EXPRESSION.");
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}
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name = xstrdup (argv[0]);
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/* Add cleanup for name. Must be free_current_contents as
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name can be reallocated */
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old_cleanups = make_cleanup (free_current_contents, &name);
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frame = xstrdup (argv[1]);
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old_cleanups = make_cleanup (xfree, frame);
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expr = xstrdup (argv[2]);
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if (strcmp (name, "-") == 0)
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{
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xfree (name);
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name = varobj_gen_name ();
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}
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else if (!isalpha (*name))
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error ("mi_cmd_var_create: name of object must begin with a letter");
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if (strcmp (frame, "*") == 0)
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var_type = USE_CURRENT_FRAME;
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else if (strcmp (frame, "@") == 0)
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var_type = USE_SELECTED_FRAME;
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else
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{
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var_type = USE_SPECIFIED_FRAME;
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frameaddr = parse_and_eval_address (frame);
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}
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if (varobjdebug)
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fprintf_unfiltered (gdb_stdlog,
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"Name=\"%s\", Frame=\"%s\" (0x%s), Expression=\"%s\"\n",
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name, frame, paddr (frameaddr), expr);
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var = varobj_create (name, expr, frameaddr, var_type);
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if (var == NULL)
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error ("mi_cmd_var_create: unable to create variable object");
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ui_out_field_string (uiout, "name", name);
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ui_out_field_int (uiout, "numchild", varobj_get_num_children (var));
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type = varobj_get_type (var);
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if (type == NULL)
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ui_out_field_string (uiout, "type", "");
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else
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{
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ui_out_field_string (uiout, "type", type);
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xfree (type);
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}
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do_cleanups (old_cleanups);
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return MI_CMD_DONE;
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}
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enum mi_cmd_result
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mi_cmd_var_delete (char *command, char **argv, int argc)
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{
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char *name;
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char *expr;
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struct varobj *var;
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int numdel;
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int children_only_p = 0;
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struct cleanup *old_cleanups;
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if (argc < 1 || argc > 2)
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error ("mi_cmd_var_delete: Usage: [-c] EXPRESSION.");
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name = xstrdup (argv[0]);
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/* Add cleanup for name. Must be free_current_contents as
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name can be reallocated */
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old_cleanups = make_cleanup (free_current_contents, &name);
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/* If we have one single argument it cannot be '-c' or any string
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starting with '-'. */
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if (argc == 1)
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{
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if (strcmp (name, "-c") == 0)
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error ("mi_cmd_var_delete: Missing required argument after '-c': variable object name");
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if (*name == '-')
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error ("mi_cmd_var_delete: Illegal variable object name");
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}
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/* If we have 2 arguments they must be '-c' followed by a string
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which would be the variable name. */
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if (argc == 2)
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{
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expr = xstrdup (argv[1]);
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if (strcmp (name, "-c") != 0)
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error ("mi_cmd_var_delete: Invalid option.");
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children_only_p = 1;
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xfree (name);
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name = xstrdup (expr);
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xfree (expr);
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}
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/* If we didn't error out, now NAME contains the name of the
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variable. */
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var = varobj_get_handle (name);
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if (var == NULL)
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error ("mi_cmd_var_delete: Variable object not found.");
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numdel = varobj_delete (var, NULL, children_only_p);
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ui_out_field_int (uiout, "ndeleted", numdel);
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do_cleanups (old_cleanups);
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return MI_CMD_DONE;
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}
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enum mi_cmd_result
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mi_cmd_var_set_format (char *command, char **argv, int argc)
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{
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enum varobj_display_formats format;
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int len;
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struct varobj *var;
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char *formspec;
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if (argc != 2)
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error ("mi_cmd_var_set_format: Usage: NAME FORMAT.");
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/* Get varobj handle, if a valid var obj name was specified */
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var = varobj_get_handle (argv[0]);
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if (var == NULL)
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error ("mi_cmd_var_set_format: Variable object not found");
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formspec = xstrdup (argv[1]);
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if (formspec == NULL)
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error ("mi_cmd_var_set_format: Must specify the format as: \"natural\", \"binary\", \"decimal\", \"hexadecimal\", or \"octal\"");
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len = strlen (formspec);
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if (STREQN (formspec, "natural", len))
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format = FORMAT_NATURAL;
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else if (STREQN (formspec, "binary", len))
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format = FORMAT_BINARY;
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else if (STREQN (formspec, "decimal", len))
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format = FORMAT_DECIMAL;
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else if (STREQN (formspec, "hexadecimal", len))
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format = FORMAT_HEXADECIMAL;
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else if (STREQN (formspec, "octal", len))
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format = FORMAT_OCTAL;
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else
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error ("mi_cmd_var_set_format: Unknown display format: must be: \"natural\", \"binary\", \"decimal\", \"hexadecimal\", or \"octal\"");
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/* Set the format of VAR to given format */
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varobj_set_display_format (var, format);
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/* Report the new current format */
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ui_out_field_string (uiout, "format", varobj_format_string[(int) format]);
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return MI_CMD_DONE;
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}
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enum mi_cmd_result
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mi_cmd_var_show_format (char *command, char **argv, int argc)
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{
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enum varobj_display_formats format;
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struct varobj *var;
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if (argc != 1)
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error ("mi_cmd_var_show_format: Usage: NAME.");
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/* Get varobj handle, if a valid var obj name was specified */
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var = varobj_get_handle (argv[0]);
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if (var == NULL)
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error ("mi_cmd_var_show_format: Variable object not found");
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format = varobj_get_display_format (var);
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/* Report the current format */
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ui_out_field_string (uiout, "format", varobj_format_string[(int) format]);
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return MI_CMD_DONE;
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}
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enum mi_cmd_result
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mi_cmd_var_info_num_children (char *command, char **argv, int argc)
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{
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struct varobj *var;
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if (argc != 1)
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error ("mi_cmd_var_info_num_children: Usage: NAME.");
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/* Get varobj handle, if a valid var obj name was specified */
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var = varobj_get_handle (argv[0]);
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if (var == NULL)
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error ("mi_cmd_var_info_num_children: Variable object not found");
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ui_out_field_int (uiout, "numchild", varobj_get_num_children (var));
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return MI_CMD_DONE;
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}
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enum mi_cmd_result
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mi_cmd_var_list_children (char *command, char **argv, int argc)
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{
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struct varobj *var;
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struct varobj **childlist;
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struct varobj **cc;
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int numchild;
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char *type;
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if (argc != 1)
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error ("mi_cmd_var_list_children: Usage: NAME.");
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/* Get varobj handle, if a valid var obj name was specified */
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var = varobj_get_handle (argv[0]);
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if (var == NULL)
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error ("mi_cmd_var_list_children: Variable object not found");
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numchild = varobj_list_children (var, &childlist);
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ui_out_field_int (uiout, "numchild", numchild);
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if (numchild <= 0)
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return MI_CMD_DONE;
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ui_out_tuple_begin (uiout, "children");
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cc = childlist;
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while (*cc != NULL)
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{
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ui_out_tuple_begin (uiout, "child");
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ui_out_field_string (uiout, "name", varobj_get_objname (*cc));
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ui_out_field_string (uiout, "exp", varobj_get_expression (*cc));
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ui_out_field_int (uiout, "numchild", varobj_get_num_children (*cc));
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type = varobj_get_type (*cc);
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/* C++ pseudo-variables (public, private, protected) do not have a type */
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if (type)
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ui_out_field_string (uiout, "type", varobj_get_type (*cc));
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ui_out_tuple_end (uiout);
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cc++;
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}
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ui_out_tuple_end (uiout);
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xfree (childlist);
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return MI_CMD_DONE;
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}
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enum mi_cmd_result
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mi_cmd_var_info_type (char *command, char **argv, int argc)
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{
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struct varobj *var;
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if (argc != 1)
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error ("mi_cmd_var_info_type: Usage: NAME.");
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/* Get varobj handle, if a valid var obj name was specified */
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var = varobj_get_handle (argv[0]);
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if (var == NULL)
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error ("mi_cmd_var_info_type: Variable object not found");
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ui_out_field_string (uiout, "type", varobj_get_type (var));
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return MI_CMD_DONE;
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}
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enum mi_cmd_result
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mi_cmd_var_info_expression (char *command, char **argv, int argc)
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{
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enum varobj_languages lang;
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struct varobj *var;
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if (argc != 1)
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error ("mi_cmd_var_info_expression: Usage: NAME.");
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/* Get varobj handle, if a valid var obj name was specified */
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var = varobj_get_handle (argv[0]);
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if (var == NULL)
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error ("mi_cmd_var_info_expression: Variable object not found");
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lang = varobj_get_language (var);
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ui_out_field_string (uiout, "lang", varobj_language_string[(int) lang]);
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ui_out_field_string (uiout, "exp", varobj_get_expression (var));
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return MI_CMD_DONE;
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}
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enum mi_cmd_result
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mi_cmd_var_show_attributes (char *command, char **argv, int argc)
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{
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int attr;
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char *attstr;
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struct varobj *var;
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if (argc != 1)
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error ("mi_cmd_var_show_attributes: Usage: NAME.");
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/* Get varobj handle, if a valid var obj name was specified */
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var = varobj_get_handle (argv[0]);
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if (var == NULL)
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error ("mi_cmd_var_show_attributes: Variable object not found");
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attr = varobj_get_attributes (var);
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/* FIXME: define masks for attributes */
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if (attr & 0x00000001)
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attstr = "editable";
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else
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attstr = "noneditable";
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ui_out_field_string (uiout, "attr", attstr);
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return MI_CMD_DONE;
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}
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enum mi_cmd_result
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mi_cmd_var_evaluate_expression (char *command, char **argv, int argc)
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{
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struct varobj *var;
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if (argc != 1)
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error ("mi_cmd_var_evaluate_expression: Usage: NAME.");
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/* Get varobj handle, if a valid var obj name was specified */
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var = varobj_get_handle (argv[0]);
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if (var == NULL)
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error ("mi_cmd_var_evaluate_expression: Variable object not found");
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ui_out_field_string (uiout, "value", varobj_get_value (var));
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return MI_CMD_DONE;
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}
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enum mi_cmd_result
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mi_cmd_var_assign (char *command, char **argv, int argc)
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{
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struct varobj *var;
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char *expression;
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if (argc != 2)
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error ("mi_cmd_var_assign: Usage: NAME EXPRESSION.");
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/* Get varobj handle, if a valid var obj name was specified */
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var = varobj_get_handle (argv[0]);
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if (var == NULL)
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error ("mi_cmd_var_assign: Variable object not found");
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/* FIXME: define masks for attributes */
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if (!(varobj_get_attributes (var) & 0x00000001))
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error ("mi_cmd_var_assign: Variable object is not editable");
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expression = xstrdup (argv[1]);
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if (!varobj_set_value (var, expression))
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error ("mi_cmd_var_assign: Could not assign expression to varible object");
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ui_out_field_string (uiout, "value", varobj_get_value (var));
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return MI_CMD_DONE;
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}
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enum mi_cmd_result
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mi_cmd_var_update (char *command, char **argv, int argc)
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{
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struct varobj *var;
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struct varobj **rootlist;
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struct varobj **cr;
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char *name;
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int nv;
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if (argc != 1)
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error ("mi_cmd_var_update: Usage: NAME.");
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name = argv[0];
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/* Check if the parameter is a "*" which means that we want
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to update all variables */
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if ((*name == '*') && (*(name + 1) == '\0'))
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{
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nv = varobj_list (&rootlist);
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ui_out_tuple_begin (uiout, "changelist");
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if (nv <= 0)
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{
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ui_out_tuple_end (uiout);
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return MI_CMD_DONE;
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}
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cr = rootlist;
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while (*cr != NULL)
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{
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varobj_update_one (*cr);
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cr++;
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}
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xfree (rootlist);
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ui_out_tuple_end (uiout);
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}
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else
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{
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/* Get varobj handle, if a valid var obj name was specified */
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var = varobj_get_handle (name);
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if (var == NULL)
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error ("mi_cmd_var_update: Variable object not found");
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ui_out_tuple_begin (uiout, "changelist");
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varobj_update_one (var);
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ui_out_tuple_end (uiout);
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}
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return MI_CMD_DONE;
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}
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/* Helper for mi_cmd_var_update() Returns 0 if the update for
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the variable fails (usually because the variable is out of
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scope), and 1 if it succeeds. */
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static int
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varobj_update_one (struct varobj *var)
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{
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struct varobj **changelist;
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struct varobj **cc;
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int nc;
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nc = varobj_update (var, &changelist);
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/* nc == 0 means that nothing has changed.
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nc == -1 means that an error occured in updating the variable.
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nc == -2 means the variable has changed type. */
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if (nc == 0)
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return 1;
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else if (nc == -1)
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{
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ui_out_field_string (uiout, "name", varobj_get_objname(var));
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ui_out_field_string (uiout, "in_scope", "false");
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return -1;
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}
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else if (nc == -2)
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{
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ui_out_field_string (uiout, "name", varobj_get_objname (var));
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ui_out_field_string (uiout, "in_scope", "true");
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ui_out_field_string (uiout, "new_type", varobj_get_type(var));
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ui_out_field_int (uiout, "new_num_children",
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varobj_get_num_children(var));
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}
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else
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{
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cc = changelist;
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while (*cc != NULL)
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{
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ui_out_field_string (uiout, "name", varobj_get_objname (*cc));
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ui_out_field_string (uiout, "in_scope", "true");
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ui_out_field_string (uiout, "type_changed", "false");
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cc++;
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}
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xfree (changelist);
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return 1;
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}
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return 1;
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}
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