mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-03 04:12:10 +08:00
73a93a3251
Add support for a variable object that tries to evaluate itself in the currently selected frame, rather than in a fixed frame. * wrapper.c,h (gdb_parse_exp_1): Added a wrapper for gdb_parse_exp_1. * varobj.h: Added USE_CURRENT_FRAME to varobj_type & changed def'n of varobj_create. * varobj.c (varobj_list): Return type indicates whether the variable's type has changed (for current frame variables). (varobj_update): Handle the case where the variable's type has changed. (delete_variable_1): Allow for deletion of variables that have not been installed yet. (new_root_variable): Initialize use_selected_frame variable. (value_of_root): This is where most of the work to handle "current frame" variables was added. Most of the complexity involves handling the case where the type of the variable has changed. (varobj_create): Add a "type" argument, to tell if the variable is one of these "current frame" variables. Also protect call to parse_exp_1 from long jumping. * mi-var-block.exp: The error report from varobj_create changed since I am now trapping parse_exp_1 errors. Change the tests to match the new error message. * mi-var-child.exp: Ditto. * mi-var-cmd.exp: Ditto. * lib/gdb.exp: Fix the gdbtk_start routine to correctly find all the library directories. * gdbtk-varobj.c (variable_create): Pass the correct "how_specified" flag to the varobj_create routine.
508 lines
14 KiB
C
508 lines
14 KiB
C
/* MI Command Set - varobj commands.
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Copyright (C) 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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/* asprintf (&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 ((make_cleanup_func) free_current_contents,
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&name);
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frame = xstrdup (argv[1]);
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old_cleanups = make_cleanup (free, 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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free (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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free (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 ((make_cleanup_func) free_current_contents,
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&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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free (name);
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name = xstrdup (expr);
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free (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_list_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_list_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_list_end (uiout);
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cc++;
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}
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ui_out_list_end (uiout);
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free (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_list_begin (uiout, "changelist");
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if (nv <= 0)
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{
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ui_out_list_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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free (rootlist);
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ui_out_list_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_list_begin (uiout, "changelist");
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varobj_update_one (var);
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ui_out_list_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");
|
|
cc++;
|
|
}
|
|
free (changelist);
|
|
return 1;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
/* Local variables: */
|
|
/* change-log-default-name: "ChangeLog-mi" */
|
|
/* End: */
|