/* Line completion stuff for GDB, the GNU debugger.
- Copyright (C) 2000, 2001, 2007, 2008, 2009 Free Software Foundation, Inc.
+ Copyright (C) 2000, 2001, 2007, 2008, 2009, 2010
+ Free Software Foundation, Inc.
This file is part of GDB.
#include "expression.h"
#include "filenames.h" /* For DOSish file names. */
#include "language.h"
+#include "gdb_assert.h"
+#include "exceptions.h"
#include "cli/cli-decode.h"
static char *gdb_completer_file_name_break_characters = " \t\n*|\"';:?><";
#endif
-/* These are used when completing on locations, which can mix file
- names and symbol names separated by a colon. */
-static char *gdb_completer_loc_break_characters = " \t\n*|\"';:?><,";
-
/* Characters that can be used to quote completion strings. Note that we
can't include '"' because the gdb C parser treats such quoted sequences
as strings. */
/* This can be used for functions which don't want to complete on symbols
but don't want to complete on anything else either. */
char **
-noop_completer (char *text, char *prefix)
+noop_completer (struct cmd_list_element *ignore, char *text, char *prefix)
{
return NULL;
}
/* Complete on filenames. */
char **
-filename_completer (char *text, char *word)
+filename_completer (struct cmd_list_element *ignore, char *text, char *word)
{
int subsequent_name;
char **return_val;
while (1)
{
char *p, *q;
+
p = rl_filename_completion_function (text, subsequent_name);
if (return_val_used >= return_val_alloced)
{
This is intended to be used in commands that set breakpoints etc. */
char **
-location_completer (char *text, char *word)
+location_completer (struct cmd_list_element *ignore, char *text, char *word)
{
int n_syms = 0, n_files = 0;
char ** fn_list = NULL;
char *fieldname, int namelen)
{
int i;
+ int computed_type_name = 0;
char *type_name = NULL;
CHECK_TYPEDEF (type);
for (i = TYPE_NFN_FIELDS (type) - 1; i >= 0; --i)
{
char *name = TYPE_FN_FIELDLIST_NAME (type, i);
+
if (name && ! strncmp (name, fieldname, namelen))
{
- if (!type_name)
- type_name = type_name_no_tag (type);
+ if (!computed_type_name)
+ {
+ type_name = type_name_no_tag (type);
+ computed_type_name = 1;
+ }
/* Omit constructors from the completion list. */
- if (strcmp (type_name, name))
+ if (!type_name || strcmp (type_name, name))
{
output[*nextp] = xstrdup (name);
++*nextp;
names, but some language parsers also have support for completing
field names. */
char **
-expression_completer (char *text, char *word)
+expression_completer (struct cmd_list_element *ignore, char *text, char *word)
{
- struct type *type;
+ struct type *type = NULL;
char *fieldname, *p;
+ volatile struct gdb_exception except;
/* Perform a tentative parse of the expression, to see whether a
field completion is required. */
fieldname = NULL;
- type = parse_field_expression (text, &fieldname);
+ TRY_CATCH (except, RETURN_MASK_ERROR)
+ {
+ type = parse_field_expression (text, &fieldname);
+ }
+ if (except.reason < 0)
+ return NULL;
if (fieldname && type)
{
for (;;)
;
/* Not ideal but it is what we used to do before... */
- return location_completer (p, word);
+ return location_completer (ignore, p, word);
}
/* Here are some useful test cases for completion. FIXME: These should
"file ../gdb.stabs/we" "ird" (needs to not break word at slash)
*/
-/* Generate completions all at once. Returns a NULL-terminated array
- of strings. Both the array and each element are allocated with
- xmalloc. It can also return NULL if there are no completions.
+typedef enum
+{
+ handle_brkchars,
+ handle_completions,
+ handle_help
+}
+complete_line_internal_reason;
+
+
+/* Internal function used to handle completions.
+
TEXT is the caller's idea of the "word" we are looking at.
LINE_BUFFER is available to be looked at; it contains the entire text
of the line. POINT is the offset in that line of the cursor. You
should pretend that the line ends at POINT.
-
- FOR_HELP is true when completing a 'help' command. In this case,
+
+ REASON is of type complete_line_internal_reason.
+
+ If REASON is handle_brkchars:
+ Preliminary phase, called by gdb_completion_word_break_characters function,
+ is used to determine the correct set of chars that are word delimiters
+ depending on the current command in line_buffer.
+ No completion list should be generated; the return value should be NULL.
+ This is checked by an assertion in that function.
+
+ If REASON is handle_completions:
+ Main phase, called by complete_line function, is used to get the list
+ of posible completions.
+
+ If REASON is handle_help:
+ Special case when completing a 'help' command. In this case,
once sub-command completions are exhausted, we simply return NULL.
- When FOR_HELP is false, we will call a sub-command's completion
- function. */
+ */
static char **
complete_line_internal (const char *text, char *line_buffer, int point,
- int for_help)
+ complete_line_internal_reason reason)
{
char **list = NULL;
char *tmp_command, *p;
functions, which can be any string) then we will switch to the
special word break set for command strings, which leaves out the
'-' character used in some commands. */
-
rl_completer_word_break_characters =
current_language->la_word_break_characters();
This we can deal with. */
if (result_list)
{
- list = complete_on_cmdlist (*result_list->prefixlist, p,
- word);
+ if (reason != handle_brkchars)
+ list = complete_on_cmdlist (*result_list->prefixlist, p,
+ word);
}
else
{
- list = complete_on_cmdlist (cmdlist, p, word);
+ if (reason != handle_brkchars)
+ list = complete_on_cmdlist (cmdlist, p, word);
}
/* Ensure that readline does the right thing with respect to
inserting quotes. */
{
/* It is a prefix command; what comes after it is
a subcommand (e.g. "info "). */
- list = complete_on_cmdlist (*c->prefixlist, p, word);
+ if (reason != handle_brkchars)
+ list = complete_on_cmdlist (*c->prefixlist, p, word);
/* Ensure that readline does the right thing
with respect to inserting quotes. */
rl_completer_word_break_characters =
gdb_completer_command_word_break_characters;
}
- else if (for_help)
+ else if (reason == handle_help)
list = NULL;
else if (c->enums)
{
- list = complete_on_enum (c->enums, p, word);
+ if (reason != handle_brkchars)
+ list = complete_on_enum (c->enums, p, word);
rl_completer_word_break_characters =
gdb_completer_command_word_break_characters;
}
p--)
;
}
- list = (*c->completer) (p, word);
+ if (reason != handle_brkchars && c->completer != NULL)
+ list = (*c->completer) (c, p, word);
}
}
else
break;
}
- list = complete_on_cmdlist (result_list, q, word);
+ if (reason != handle_brkchars)
+ list = complete_on_cmdlist (result_list, q, word);
/* Ensure that readline does the right thing
with respect to inserting quotes. */
gdb_completer_command_word_break_characters;
}
}
- else if (for_help)
+ else if (reason == handle_help)
list = NULL;
else
{
}
else if (c->enums)
{
- list = complete_on_enum (c->enums, p, word);
+ if (reason != handle_brkchars)
+ list = complete_on_enum (c->enums, p, word);
}
else
{
p--)
;
}
- list = (*c->completer) (p, word);
+ if (reason != handle_brkchars && c->completer != NULL)
+ list = (*c->completer) (c, p, word);
}
}
}
return list;
}
+/* Generate completions all at once. Returns a NULL-terminated array
+ of strings. Both the array and each element are allocated with
+ xmalloc. It can also return NULL if there are no completions.
-/* Like complete_line_internal, but always passes 0 for FOR_HELP. */
+ TEXT is the caller's idea of the "word" we are looking at.
+
+ LINE_BUFFER is available to be looked at; it contains the entire text
+ of the line.
+
+ POINT is the offset in that line of the cursor. You
+ should pretend that the line ends at POINT. */
char **
complete_line (const char *text, char *line_buffer, int point)
{
- return complete_line_internal (text, line_buffer, point, 0);
+ return complete_line_internal (text, line_buffer, point, handle_completions);
}
/* Complete on command names. Used by "help". */
char **
-command_completer (char *text, char *word)
+command_completer (struct cmd_list_element *ignore, char *text, char *word)
+{
+ return complete_line_internal (word, text, strlen (text), handle_help);
+}
+
+/* Get the list of chars that are considered as word breaks
+ for the current command. */
+
+char *
+gdb_completion_word_break_characters (void)
{
- return complete_line_internal (word, text, strlen (text), 1);
+ char **list;
+
+ list = complete_line_internal (rl_line_buffer, rl_line_buffer, rl_point,
+ handle_brkchars);
+ gdb_assert (list == NULL);
+ return rl_completer_word_break_characters;
}
/* Generate completions one by one for the completer. Each time we are
projects / deliverable / binutils-gdb.git / blobdiff