/* 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, 2011
+ Free Software Foundation, Inc.
This file is part of GDB.
#include "filenames.h" /* For DOSish file names. */
#include "language.h"
#include "gdb_assert.h"
+#include "exceptions.h"
#include "cli/cli-decode.h"
/* readline uses the word breaks for two things:
(1) In figuring out where to point the TEXT parameter to the
rl_completion_entry_function. Since we don't use TEXT for much,
- it doesn't matter a lot what the word breaks are for this purpose, but
- it does affect how much stuff M-? lists.
+ it doesn't matter a lot what the word breaks are for this purpose,
+ but it does affect how much stuff M-? lists.
(2) If one of the matches contains a word break character, readline
will quote it. That's why we switch between
current_language->la_word_break_characters() and
gdb_completer_command_word_break_characters. I'm not sure when
- we need this behavior (perhaps for funky characters in C++ symbols?). */
+ we need this behavior (perhaps for funky characters in C++
+ symbols?). */
/* Variables which are necessary for fancy command line editing. */
/* When completing on command names, we remove '-' from the list of
word break characters, since we use it in command names. If the
readline library sees one in any of the current completion strings,
- it thinks that the string needs to be quoted and automatically supplies
- a leading quote. */
+ it thinks that the string needs to be quoted and automatically
+ supplies a leading quote. */
static char *gdb_completer_command_word_break_characters =
" \t\n!@#$%^&*()+=|~`}{[]\"';:?/>.<,";
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. */
+/* 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. */
static char *gdb_completer_quote_characters = "'";
\f
/* Accessor for some completer data that may interest other files. */
char *
readline_line_completion_function (const char *text, int matches)
{
- return line_completion_function (text, matches, rl_line_buffer, rl_point);
+ return line_completion_function (text, matches,
+ rl_line_buffer, rl_point);
}
-/* This can be used for functions which don't want to complete on symbols
- but don't want to complete on anything else either. */
+/* 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 (struct cmd_list_element *ignore, char *text, char *prefix)
+noop_completer (struct cmd_list_element *ignore,
+ char *text, char *prefix)
{
return NULL;
}
/* Complete on filenames. */
char **
-filename_completer (struct cmd_list_element *ignore, 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)
{
break;
}
/* We need to set subsequent_name to a non-zero value before the
- continue line below, because otherwise, if the first file seen
- by GDB is a backup file whose name ends in a `~', we will loop
- indefinitely. */
+ continue line below, because otherwise, if the first file
+ seen by GDB is a backup file whose name ends in a `~', we
+ will loop indefinitely. */
subsequent_name = 1;
- /* Like emacs, don't complete on old versions. Especially useful
- in the "source" command. */
+ /* Like emacs, don't complete on old versions. Especially
+ useful in the "source" command. */
if (p[strlen (p) - 1] == '~')
{
xfree (p);
}
}
#if 0
- /* There is no way to do this just long enough to affect quote inserting
- without also affecting the next completion. This should be fixed in
- readline. FIXME. */
+ /* There is no way to do this just long enough to affect quote
+ inserting without also affecting the next completion. This
+ should be fixed in readline. FIXME. */
/* Ensure that readline does the right thing
with respect to inserting quotes. */
rl_completer_word_break_characters = "";
or
symbol+offset
- This is intended to be used in commands that set breakpoints etc. */
+ This is intended to be used in commands that set breakpoints
+ etc. */
+
char **
-location_completer (struct cmd_list_element *ignore, 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;
if (i < TYPE_N_BASECLASSES (type))
result += count_struct_fields (TYPE_BASECLASS (type, i));
else if (TYPE_FIELD_NAME (type, i))
- ++result;
+ {
+ if (TYPE_FIELD_NAME (type, i)[0] != '\0')
+ ++result;
+ else if (TYPE_CODE (TYPE_FIELD_TYPE (type, i)) == TYPE_CODE_UNION)
+ {
+ /* Recurse into anonymous unions. */
+ result += count_struct_fields (TYPE_FIELD_TYPE (type, i));
+ }
+ }
}
for (i = TYPE_NFN_FIELDS (type) - 1; i >= 0; --i)
for (i = 0; i < TYPE_NFIELDS (type); ++i)
{
if (i < TYPE_N_BASECLASSES (type))
- add_struct_fields (TYPE_BASECLASS (type, i), nextp, output,
- fieldname, namelen);
- else if (TYPE_FIELD_NAME (type, i)
- && ! strncmp (TYPE_FIELD_NAME (type, i), fieldname, namelen))
+ add_struct_fields (TYPE_BASECLASS (type, i), nextp,
+ output, fieldname, namelen);
+ else if (TYPE_FIELD_NAME (type, i))
{
- output[*nextp] = xstrdup (TYPE_FIELD_NAME (type, i));
- ++*nextp;
+ if (TYPE_FIELD_NAME (type, i)[0] != '\0')
+ {
+ if (! strncmp (TYPE_FIELD_NAME (type, i),
+ fieldname, namelen))
+ {
+ output[*nextp] = xstrdup (TYPE_FIELD_NAME (type, i));
+ ++*nextp;
+ }
+ }
+ else if (TYPE_CODE (TYPE_FIELD_TYPE (type, i)) == TYPE_CODE_UNION)
+ {
+ /* Recurse into anonymous unions. */
+ add_struct_fields (TYPE_FIELD_TYPE (type, i), nextp,
+ output, fieldname, namelen);
+ }
}
}
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 (!computed_type_name)
computed_type_name = 1;
}
/* Omit constructors from the completion list. */
- if (type_name && 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 (struct cmd_list_element *ignore, 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 (;;)
p--)
;
- /* Not ideal but it is what we used to do before... */
+ /* Not ideal but it is what we used to do before... */
return location_completer (ignore, p, word);
}
-/* Here are some useful test cases for completion. FIXME: These should
- be put in the test suite. They should be tested with both M-? and TAB.
+/* Here are some useful test cases for completion. FIXME: These
+ should be put in the test suite. They should be tested with both
+ M-? and TAB.
"show output-" "radix"
"show output" "-radix"
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.
+ 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.
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.
+ 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
*/
static char **
-complete_line_internal (const char *text, char *line_buffer, int point,
+complete_line_internal (const char *text,
+ char *line_buffer, int point,
complete_line_internal_reason reason)
{
char **list = NULL;
char *word;
struct cmd_list_element *c, *result_list;
- /* Choose the default set of word break characters to break completions.
- If we later find out that we are doing completions on command strings
- (as opposed to strings supplied by the individual command completer
- 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. */
+ /* Choose the default set of word break characters to break
+ completions. If we later find out that we are doing completions
+ on command strings (as opposed to strings supplied by the
+ individual command completer 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();
- /* Decide whether to complete on a list of gdb commands or on symbols. */
+ /* Decide whether to complete on a list of gdb commands or on
+ symbols. */
tmp_command = (char *) alloca (point + 1);
p = tmp_command;
{
/* An empty line we want to consider ambiguous; that is, it
could be any command. */
- c = (struct cmd_list_element *) -1;
+ c = CMD_LIST_AMBIGUOUS;
result_list = 0;
}
else
possible completions. */
list = NULL;
}
- else if (c == (struct cmd_list_element *) -1)
+ else if (c == CMD_LIST_AMBIGUOUS)
{
char *q;
if (p == tmp_command + point)
{
- /* There is no non-whitespace in the line beyond the command. */
+ /* There is no non-whitespace in the line beyond the
+ command. */
if (p[-1] == ' ' || p[-1] == '\t')
{
- /* The command is followed by whitespace; we need to complete
- on whatever comes after command. */
+ /* The command is followed by whitespace; we need to
+ complete on whatever comes after command. */
if (c->prefixlist)
{
/* It is a prefix command; what comes after it is
else
{
/* The command is not followed by whitespace; we need to
- complete on the command itself. e.g. "p" which is a
+ complete on the command itself, e.g. "p" which is a
command itself but also can complete to "print", "ptype"
etc. */
char *q;
of file-name completion. */
for (p = word;
p > tmp_command
- && strchr (gdb_completer_file_name_break_characters, p[-1]) == NULL;
+ && strchr (gdb_completer_file_name_break_characters,
+ p[-1]) == NULL;
p--)
;
rl_completer_word_break_characters =
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.
+ 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, handle_completions);
+ return complete_line_internal (text, line_buffer,
+ point, handle_completions);
}
/* Complete on command names. Used by "help". */
char **
-command_completer (struct cmd_list_element *ignore, 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);
+ return complete_line_internal (word, text,
+ strlen (text), handle_help);
}
/* Get the list of chars that are considered as word breaks
char *
gdb_completion_word_break_characters (void)
{
- char ** list;
+ 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
- called return another potential completion to the caller.
- line_completion just completes on commands or passes the buck to the
- command's completer function, the stuff specific to symbol completion
- is in make_symbol_completion_list.
+/* Generate completions one by one for the completer. Each time we
+ are called return another potential completion to the caller.
+ line_completion just completes on commands or passes the buck to
+ the command's completer function, the stuff specific to symbol
+ completion is in make_symbol_completion_list.
TEXT is the caller's idea of the "word" we are looking at.
- MATCHES is the number of matches that have currently been collected from
- calling this completion function. When zero, then we need to initialize,
- otherwise the initialization has already taken place and we can just
- return the next potential completion string.
+ MATCHES is the number of matches that have currently been collected
+ from calling this completion function. When zero, then we need to
+ initialize, otherwise the initialization has already taken place
+ and we can just return the next potential completion string.
- 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.
+ 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.
- Returns NULL if there are no more completions, else a pointer to a string
- which is a possible completion, it is the caller's responsibility to
- free the string. */
+ Returns NULL if there are no more completions, else a pointer to a
+ string which is a possible completion, it is the caller's
+ responsibility to free the string. */
static char *
line_completion_function (const char *text, int matches,
if (matches == 0)
{
- /* The caller is beginning to accumulate a new set of completions, so
- we need to find all of them now, and cache them for returning one at
- a time on future calls. */
+ /* The caller is beginning to accumulate a new set of
+ completions, so we need to find all of them now, and cache
+ them for returning one at a time on future calls. */
if (list)
{
- /* Free the storage used by LIST, but not by the strings inside.
- This is because rl_complete_internal () frees the strings.
- As complete_line may abort by calling `error' clear LIST now. */
+ /* Free the storage used by LIST, but not by the strings
+ inside. This is because rl_complete_internal () frees
+ the strings. As complete_line may abort by calling
+ `error' clear LIST now. */
xfree (list);
list = NULL;
}
list = complete_line (text, line_buffer, point);
}
- /* If we found a list of potential completions during initialization then
- dole them out one at a time. The vector of completions is NULL
- terminated, so after returning the last one, return NULL (and continue
- to do so) each time we are called after that, until a new list is
- available. */
+ /* If we found a list of potential completions during initialization
+ then dole them out one at a time. The vector of completions is
+ NULL terminated, so after returning the last one, return NULL
+ (and continue to do so) each time we are called after that, until
+ a new list is available. */
if (list)
{
/* Can't do this because readline hasn't yet checked the word breaks
for figuring out whether to insert a quote. */
if (output == NULL)
- /* Make sure the word break characters are set back to normal for the
- next time that readline tries to complete something. */
+ /* Make sure the word break characters are set back to normal for
+ the next time that readline tries to complete something. */
rl_completer_word_break_characters =
current_language->la_word_break_characters();
#endif
}
/* Skip over the possibly quoted word STR (as defined by the quote
- characters QUOTECHARS and the the word break characters
- BREAKCHARS). Returns pointer to the location after the "word". If
- either QUOTECHARS or BREAKCHARS is NULL, use the same values used
- by the completer. */
+ characters QUOTECHARS and the word break characters BREAKCHARS).
+ Returns pointer to the location after the "word". If either
+ QUOTECHARS or BREAKCHARS is NULL, use the same values used by the
+ completer. */
char *
skip_quoted_chars (char *str, char *quotechars, char *breakchars)
}
else if (strchr (quotechars, *scan))
{
- /* Found start of a quoted string. */
+ /* Found start of a quoted string. */
quote_char = *scan;
}
else if (strchr (breakchars, *scan))
projects / deliverable / binutils-gdb.git / blobdiff