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Introduce c_value_print_array

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This adds c_value_print_array, a value-based analogue of
c_val_print_array.

gdb/ChangeLog
2020-03-13  Tom Tromey  <tom@tromey.com>

	* c-valprint.c (c_value_print_array): New function.
	(c_value_print_inner): Use it.
This commit is contained in:
Tom Tromey 2020-03-13 17:39:52 -06:00
parent ce80b8bd37
commit 6999f067c1
2 changed files with 102 additions and 2 deletions
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5
gdb/ChangeLog
View File

@ -1,3 +1,8 @@
2020-03-13 Tom Tromey <tom@tromey.com>
* c-valprint.c (c_value_print_array): New function.
(c_value_print_inner): Use it.
2020-03-13 Tom Tromey <tom@tromey.com>
* c-valprint.c (c_value_print_memberptr): New function.

99
gdb/c-valprint.c
View File

@ -335,6 +335,102 @@ c_val_print_array (struct type *type, const gdb_byte *valaddr,
}
}
/* c_value_print helper for TYPE_CODE_ARRAY. */
static void
c_value_print_array (struct value *val,
struct ui_file *stream, int recurse,
const struct value_print_options *options)
{
struct type *type = check_typedef (value_type (val));
CORE_ADDR address = value_address (val);
const gdb_byte *valaddr = value_contents_for_printing (val);
struct type *unresolved_elttype = TYPE_TARGET_TYPE (type);
struct type *elttype = check_typedef (unresolved_elttype);
if (TYPE_LENGTH (type) > 0 && TYPE_LENGTH (unresolved_elttype) > 0)
{
LONGEST low_bound, high_bound;
int eltlen, len;
enum bfd_endian byte_order = type_byte_order (type);
if (!get_array_bounds (type, &low_bound, &high_bound))
error (_("Could not determine the array high bound"));
eltlen = TYPE_LENGTH (elttype);
len = high_bound - low_bound + 1;
if (options->prettyformat_arrays)
{
print_spaces_filtered (2 + 2 * recurse, stream);
}
/* Print arrays of textual chars with a string syntax, as
long as the entire array is valid. */
if (c_textual_element_type (unresolved_elttype,
options->format)
&& value_bytes_available (val, 0, TYPE_LENGTH (type))
&& !value_bits_any_optimized_out (val, 0,
TARGET_CHAR_BIT * TYPE_LENGTH (type)))
{
int force_ellipses = 0;
/* If requested, look for the first null char and only
print elements up to it. */
if (options->stop_print_at_null)
{
unsigned int temp_len;
for (temp_len = 0;
(temp_len < len
&& temp_len < options->print_max
&& extract_unsigned_integer (valaddr + temp_len * eltlen,
eltlen, byte_order) != 0);
++temp_len)
;
/* Force LA_PRINT_STRING to print ellipses if
we've printed the maximum characters and
the next character is not \000. */
if (temp_len == options->print_max && temp_len < len)
{
ULONGEST ival
= extract_unsigned_integer (valaddr + temp_len * eltlen,
eltlen, byte_order);
if (ival != 0)
force_ellipses = 1;
}
len = temp_len;
}
LA_PRINT_STRING (stream, unresolved_elttype, valaddr, len,
NULL, force_ellipses, options);
}
else
{
unsigned int i = 0;
fprintf_filtered (stream, "{");
/* If this is a virtual function table, print the 0th
entry specially, and the rest of the members
normally. */
if (cp_is_vtbl_ptr_type (elttype))
{
i = 1;
fprintf_filtered (stream, _("%d vtable entries"),
len - 1);
}
value_print_array_elements (val, stream, recurse, options, i);
fprintf_filtered (stream, "}");
}
}
else
{
/* Array of unspecified length: treat like pointer to first elt. */
print_unpacked_pointer (type, elttype, unresolved_elttype, valaddr,
0, address, stream, recurse, options);
}
}
/* c_val_print helper for TYPE_CODE_PTR. */
static void
@ -657,8 +753,7 @@ c_value_print_inner (struct value *val, struct ui_file *stream, int recurse,
switch (TYPE_CODE (type))
{
case TYPE_CODE_ARRAY:
c_val_print_array (type, valaddr, 0, address, stream,
recurse, val, options);
c_value_print_array (val, stream, recurse, options);
break;
case TYPE_CODE_METHODPTR: