16b9eb7bfa
Consider the following code:
type Enumerated is (Enum_A, Enum_B, Enum_C, Enum_Last);
type Table is array (Enumerated) of Integer;
-- Declare a variable of type Table to make sure the compiler
-- does emit the debugging information for that type.
V : Table := (others => 1);
Trying to print the type description of type Table, or of variable V
yields:
(gdb) ptype v
type = array (0 .. 3) of integer
(gdb) ptype example.table
type = array (0 .. 3) of integer
The compiler generates an XA type for the bounds...
<1><cf6>: Abbrev Number: 13 (DW_TAG_structure_type)
<cf7> DW_AT_name : example__table___XA
... whose member is described as being as:
<2><cfe>: Abbrev Number: 14 (DW_TAG_member)
<cff> DW_AT_name : example__enumerated
<d05> DW_AT_type : <0xc69>
This leads us to DIE 0xc69, which is our enumeration type:
<2><c69>: Abbrev Number: 4 (DW_TAG_enumeration_type)
<c6a> DW_AT_name : example__enumerated
Normally, for arrays, we expect a range type, rather than an enumerated
type. However, for a situation like this, where the range of the array
index is the full enumeration type, it seems like a waste to require
an extra range layer.
Instead, looking at print_range, we see that we print the bounds
of our range using the target type:
target_type = TYPE_TARGET_TYPE (type);
if (target_type == NULL)
target_type = type;
[...]
ada_print_scalar (target_type, lo, stream);
fprintf_filtered (stream, " .. ");
ada_print_scalar (target_type, hi, stream);
In this case, this causes us to use the enumerated type's subtype,
which is a plain integer type, hence the output we get. However,
there is no reason for using the target type, even in the TYPE_CODE_RANGE
situation. So this patch fixes the issue by simply printing the bounds
using the type being given, instead of its target type.
gdb/ChangeLog:
* ada-typeprint.c (print_range): Print the bounds using TYPE
rather than its TYPE_TARGET_TYPE.
A new test for this isn't necessary, as existing tests will demonstrate
this issue once a change in the compiler triggering the generation of
this type of debugging info gets pushed.
952 lines
27 KiB
C
952 lines
27 KiB
C
/* Support for printing Ada types for GDB, the GNU debugger.
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Copyright (C) 1986-2018 Free Software Foundation, Inc.
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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 3 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, see <http://www.gnu.org/licenses/>. */
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#include "defs.h"
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#include "gdb_obstack.h"
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#include "bfd.h" /* Binary File Description */
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#include "symtab.h"
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#include "gdbtypes.h"
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#include "expression.h"
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#include "value.h"
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#include "gdbcore.h"
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#include "target.h"
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#include "command.h"
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#include "gdbcmd.h"
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#include "language.h"
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#include "demangle.h"
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#include "c-lang.h"
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#include "typeprint.h"
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#include "target-float.h"
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#include "ada-lang.h"
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#include <ctype.h>
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static int print_selected_record_field_types (struct type *, struct type *,
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int, int,
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struct ui_file *, int, int,
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const struct type_print_options *);
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static int print_record_field_types (struct type *, struct type *,
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struct ui_file *, int, int,
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const struct type_print_options *);
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static char *name_buffer;
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static int name_buffer_len;
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/* The (decoded) Ada name of TYPE. This value persists until the
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next call. */
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static char *
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decoded_type_name (struct type *type)
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{
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if (ada_type_name (type) == NULL)
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return NULL;
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else
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{
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const char *raw_name = ada_type_name (type);
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char *s, *q;
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if (name_buffer == NULL || name_buffer_len <= strlen (raw_name))
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{
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name_buffer_len = 16 + 2 * strlen (raw_name);
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name_buffer = (char *) xrealloc (name_buffer, name_buffer_len);
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}
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strcpy (name_buffer, raw_name);
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s = (char *) strstr (name_buffer, "___");
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if (s != NULL)
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*s = '\0';
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s = name_buffer + strlen (name_buffer) - 1;
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while (s > name_buffer && (s[0] != '_' || s[-1] != '_'))
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s -= 1;
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if (s == name_buffer)
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return name_buffer;
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if (!islower (s[1]))
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return NULL;
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for (s = q = name_buffer; *s != '\0'; q += 1)
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{
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if (s[0] == '_' && s[1] == '_')
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{
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*q = '.';
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s += 2;
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}
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else
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{
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*q = *s;
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s += 1;
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}
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}
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*q = '\0';
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return name_buffer;
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}
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}
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/* Return nonzero if TYPE is a subrange type, and its bounds
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are identical to the bounds of its subtype. */
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static int
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type_is_full_subrange_of_target_type (struct type *type)
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{
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struct type *subtype;
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if (TYPE_CODE (type) != TYPE_CODE_RANGE)
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return 0;
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subtype = TYPE_TARGET_TYPE (type);
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if (subtype == NULL)
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return 0;
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if (is_dynamic_type (type))
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return 0;
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if (ada_discrete_type_low_bound (type)
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!= ada_discrete_type_low_bound (subtype))
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return 0;
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if (ada_discrete_type_high_bound (type)
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!= ada_discrete_type_high_bound (subtype))
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return 0;
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return 1;
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}
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/* Print TYPE on STREAM, preferably as a range if BOUNDS_PREFERED_P
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is nonzero. */
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static void
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print_range (struct type *type, struct ui_file *stream,
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int bounds_prefered_p)
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{
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if (!bounds_prefered_p)
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{
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/* Try stripping all TYPE_CODE_RANGE layers whose bounds
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are identical to the bounds of their subtype. When
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the bounds of both types match, it can allow us to
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print a range using the name of its base type, which
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is easier to read. For instance, we would print...
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array (character) of ...
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... instead of...
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array ('["00"]' .. '["ff"]') of ... */
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while (type_is_full_subrange_of_target_type (type))
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type = TYPE_TARGET_TYPE (type);
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}
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switch (TYPE_CODE (type))
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{
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case TYPE_CODE_RANGE:
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case TYPE_CODE_ENUM:
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{
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LONGEST lo = 0, hi = 0; /* init for gcc -Wall */
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int got_error = 0;
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TRY
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{
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lo = ada_discrete_type_low_bound (type);
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hi = ada_discrete_type_high_bound (type);
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}
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CATCH (e, RETURN_MASK_ERROR)
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{
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/* This can happen when the range is dynamic. Sometimes,
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resolving dynamic property values requires us to have
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access to an actual object, which is not available
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when the user is using the "ptype" command on a type.
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Print the range as an unbounded range. */
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fprintf_filtered (stream, "<>");
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got_error = 1;
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}
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END_CATCH
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if (!got_error)
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{
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ada_print_scalar (type, lo, stream);
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fprintf_filtered (stream, " .. ");
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ada_print_scalar (type, hi, stream);
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}
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}
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break;
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default:
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fprintf_filtered (stream, "%.*s",
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ada_name_prefix_len (TYPE_NAME (type)),
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TYPE_NAME (type));
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break;
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}
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}
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/* Print the number or discriminant bound at BOUNDS+*N on STREAM, and
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set *N past the bound and its delimiter, if any. */
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static void
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print_range_bound (struct type *type, const char *bounds, int *n,
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struct ui_file *stream)
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{
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LONGEST B;
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if (ada_scan_number (bounds, *n, &B, n))
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{
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/* STABS decodes all range types which bounds are 0 .. -1 as
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unsigned integers (ie. the type code is TYPE_CODE_INT, not
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TYPE_CODE_RANGE). Unfortunately, ada_print_scalar() relies
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on the unsigned flag to determine whether the bound should
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be printed as a signed or an unsigned value. This causes
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the upper bound of the 0 .. -1 range types to be printed as
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a very large unsigned number instead of -1.
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To workaround this stabs deficiency, we replace the TYPE by NULL
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to indicate default output when we detect that the bound is negative,
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and the type is a TYPE_CODE_INT. The bound is negative when
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'm' is the last character of the number scanned in BOUNDS. */
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if (bounds[*n - 1] == 'm' && TYPE_CODE (type) == TYPE_CODE_INT)
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type = NULL;
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ada_print_scalar (type, B, stream);
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if (bounds[*n] == '_')
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*n += 2;
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}
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else
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{
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int bound_len;
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const char *bound = bounds + *n;
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const char *pend;
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pend = strstr (bound, "__");
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if (pend == NULL)
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*n += bound_len = strlen (bound);
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else
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{
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bound_len = pend - bound;
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*n += bound_len + 2;
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}
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fprintf_filtered (stream, "%.*s", bound_len, bound);
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}
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}
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/* Assuming NAME[0 .. NAME_LEN-1] is the name of a range type, print
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the value (if found) of the bound indicated by SUFFIX ("___L" or
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"___U") according to the ___XD conventions. */
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static void
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print_dynamic_range_bound (struct type *type, const char *name, int name_len,
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const char *suffix, struct ui_file *stream)
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{
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LONGEST B;
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std::string name_buf (name, name_len);
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name_buf += suffix;
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if (get_int_var_value (name_buf.c_str (), B))
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ada_print_scalar (type, B, stream);
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else
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fprintf_filtered (stream, "?");
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}
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/* Print RAW_TYPE as a range type, using any bound information
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following the GNAT encoding (if available).
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If BOUNDS_PREFERED_P is nonzero, force the printing of the range
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using its bounds. Otherwise, try printing the range without
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printing the value of the bounds, if possible (this is only
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considered a hint, not a guaranty). */
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static void
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print_range_type (struct type *raw_type, struct ui_file *stream,
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int bounds_prefered_p)
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{
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const char *name;
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struct type *base_type;
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const char *subtype_info;
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gdb_assert (raw_type != NULL);
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name = TYPE_NAME (raw_type);
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gdb_assert (name != NULL);
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if (TYPE_CODE (raw_type) == TYPE_CODE_RANGE)
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base_type = TYPE_TARGET_TYPE (raw_type);
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else
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base_type = raw_type;
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subtype_info = strstr (name, "___XD");
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if (subtype_info == NULL)
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print_range (raw_type, stream, bounds_prefered_p);
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else
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{
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int prefix_len = subtype_info - name;
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const char *bounds_str;
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int n;
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subtype_info += 5;
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bounds_str = strchr (subtype_info, '_');
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n = 1;
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if (*subtype_info == 'L')
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{
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print_range_bound (base_type, bounds_str, &n, stream);
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subtype_info += 1;
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}
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else
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print_dynamic_range_bound (base_type, name, prefix_len, "___L",
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stream);
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fprintf_filtered (stream, " .. ");
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if (*subtype_info == 'U')
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print_range_bound (base_type, bounds_str, &n, stream);
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else
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print_dynamic_range_bound (base_type, name, prefix_len, "___U",
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stream);
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}
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}
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/* Print enumerated type TYPE on STREAM. */
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static void
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print_enum_type (struct type *type, struct ui_file *stream)
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{
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int len = TYPE_NFIELDS (type);
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int i;
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LONGEST lastval;
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fprintf_filtered (stream, "(");
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wrap_here (" ");
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lastval = 0;
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for (i = 0; i < len; i++)
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{
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QUIT;
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if (i)
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fprintf_filtered (stream, ", ");
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wrap_here (" ");
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fputs_filtered (ada_enum_name (TYPE_FIELD_NAME (type, i)), stream);
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if (lastval != TYPE_FIELD_ENUMVAL (type, i))
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{
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fprintf_filtered (stream, " => %s",
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plongest (TYPE_FIELD_ENUMVAL (type, i)));
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lastval = TYPE_FIELD_ENUMVAL (type, i);
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}
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lastval += 1;
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}
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fprintf_filtered (stream, ")");
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}
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/* Print representation of Ada fixed-point type TYPE on STREAM. */
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static void
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print_fixed_point_type (struct type *type, struct ui_file *stream)
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{
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struct value *delta = ada_delta (type);
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struct value *small = ada_scaling_factor (type);
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if (delta == nullptr)
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fprintf_filtered (stream, "delta ??");
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else
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{
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std::string str;
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str = target_float_to_string (value_contents (delta),
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value_type (delta), "%g");
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fprintf_filtered (stream, "delta %s", str.c_str());
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if (!value_equal (delta, small))
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{
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str = target_float_to_string (value_contents (small),
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value_type (small), "%g");
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fprintf_filtered (stream, " <'small = %s>", str.c_str());
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}
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}
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}
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/* Print simple (constrained) array type TYPE on STREAM. LEVEL is the
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recursion (indentation) level, in case the element type itself has
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nested structure, and SHOW is the number of levels of internal
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structure to show (see ada_print_type). */
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static void
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print_array_type (struct type *type, struct ui_file *stream, int show,
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int level, const struct type_print_options *flags)
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{
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int bitsize;
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int n_indices;
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struct type *elt_type = NULL;
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if (ada_is_constrained_packed_array_type (type))
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type = ada_coerce_to_simple_array_type (type);
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bitsize = 0;
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fprintf_filtered (stream, "array (");
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if (type == NULL)
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{
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fprintf_filtered (stream, _("<undecipherable array type>"));
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return;
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}
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n_indices = -1;
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if (ada_is_simple_array_type (type))
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{
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struct type *range_desc_type;
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struct type *arr_type;
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range_desc_type = ada_find_parallel_type (type, "___XA");
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ada_fixup_array_indexes_type (range_desc_type);
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bitsize = 0;
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if (range_desc_type == NULL)
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{
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for (arr_type = type; TYPE_CODE (arr_type) == TYPE_CODE_ARRAY;
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arr_type = TYPE_TARGET_TYPE (arr_type))
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{
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if (arr_type != type)
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fprintf_filtered (stream, ", ");
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print_range (TYPE_INDEX_TYPE (arr_type), stream,
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0 /* bounds_prefered_p */);
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if (TYPE_FIELD_BITSIZE (arr_type, 0) > 0)
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bitsize = TYPE_FIELD_BITSIZE (arr_type, 0);
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}
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}
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else
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{
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int k;
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n_indices = TYPE_NFIELDS (range_desc_type);
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for (k = 0, arr_type = type;
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k < n_indices;
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k += 1, arr_type = TYPE_TARGET_TYPE (arr_type))
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{
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if (k > 0)
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fprintf_filtered (stream, ", ");
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print_range_type (TYPE_FIELD_TYPE (range_desc_type, k),
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stream, 0 /* bounds_prefered_p */);
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if (TYPE_FIELD_BITSIZE (arr_type, 0) > 0)
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bitsize = TYPE_FIELD_BITSIZE (arr_type, 0);
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}
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}
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}
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else
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{
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int i, i0;
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for (i = i0 = ada_array_arity (type); i > 0; i -= 1)
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fprintf_filtered (stream, "%s<>", i == i0 ? "" : ", ");
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}
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elt_type = ada_array_element_type (type, n_indices);
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fprintf_filtered (stream, ") of ");
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wrap_here ("");
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ada_print_type (elt_type, "", stream, show == 0 ? 0 : show - 1, level + 1,
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flags);
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/* Arrays with variable-length elements are never bit-packed in practice but
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compilers have to describe their stride so that we can properly fetch
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individual elements. Do not say the array is packed in this case. */
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if (bitsize > 0 && !is_dynamic_type (elt_type))
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fprintf_filtered (stream, " <packed: %d-bit elements>", bitsize);
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}
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/* Print the choices encoded by field FIELD_NUM of variant-part TYPE on
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STREAM, assuming that VAL_TYPE (if non-NULL) is the type of the
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values. Return non-zero if the field is an encoding of
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discriminant values, as in a standard variant record, and 0 if the
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field is not so encoded (as happens with single-component variants
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in types annotated with pragma Unchecked_Variant). */
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static int
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print_choices (struct type *type, int field_num, struct ui_file *stream,
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struct type *val_type)
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{
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int have_output;
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int p;
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const char *name = TYPE_FIELD_NAME (type, field_num);
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have_output = 0;
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/* Skip over leading 'V': NOTE soon to be obsolete. */
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if (name[0] == 'V')
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{
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if (!ada_scan_number (name, 1, NULL, &p))
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goto Huh;
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}
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else
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p = 0;
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while (1)
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{
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switch (name[p])
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{
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default:
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goto Huh;
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case '_':
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case '\0':
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fprintf_filtered (stream, " =>");
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return 1;
|
||
case 'S':
|
||
case 'R':
|
||
case 'O':
|
||
if (have_output)
|
||
fprintf_filtered (stream, " | ");
|
||
have_output = 1;
|
||
break;
|
||
}
|
||
|
||
switch (name[p])
|
||
{
|
||
case 'S':
|
||
{
|
||
LONGEST W;
|
||
|
||
if (!ada_scan_number (name, p + 1, &W, &p))
|
||
goto Huh;
|
||
ada_print_scalar (val_type, W, stream);
|
||
break;
|
||
}
|
||
case 'R':
|
||
{
|
||
LONGEST L, U;
|
||
|
||
if (!ada_scan_number (name, p + 1, &L, &p)
|
||
|| name[p] != 'T' || !ada_scan_number (name, p + 1, &U, &p))
|
||
goto Huh;
|
||
ada_print_scalar (val_type, L, stream);
|
||
fprintf_filtered (stream, " .. ");
|
||
ada_print_scalar (val_type, U, stream);
|
||
break;
|
||
}
|
||
case 'O':
|
||
fprintf_filtered (stream, "others");
|
||
p += 1;
|
||
break;
|
||
}
|
||
}
|
||
|
||
Huh:
|
||
fprintf_filtered (stream, "?? =>");
|
||
return 0;
|
||
}
|
||
|
||
/* Assuming that field FIELD_NUM of TYPE represents variants whose
|
||
discriminant is contained in OUTER_TYPE, print its components on STREAM.
|
||
LEVEL is the recursion (indentation) level, in case any of the fields
|
||
themselves have nested structure, and SHOW is the number of levels of
|
||
internal structure to show (see ada_print_type). For this purpose,
|
||
fields nested in a variant part are taken to be at the same level as
|
||
the fields immediately outside the variant part. */
|
||
|
||
static void
|
||
print_variant_clauses (struct type *type, int field_num,
|
||
struct type *outer_type, struct ui_file *stream,
|
||
int show, int level,
|
||
const struct type_print_options *flags)
|
||
{
|
||
int i;
|
||
struct type *var_type, *par_type;
|
||
struct type *discr_type;
|
||
|
||
var_type = TYPE_FIELD_TYPE (type, field_num);
|
||
discr_type = ada_variant_discrim_type (var_type, outer_type);
|
||
|
||
if (TYPE_CODE (var_type) == TYPE_CODE_PTR)
|
||
{
|
||
var_type = TYPE_TARGET_TYPE (var_type);
|
||
if (var_type == NULL || TYPE_CODE (var_type) != TYPE_CODE_UNION)
|
||
return;
|
||
}
|
||
|
||
par_type = ada_find_parallel_type (var_type, "___XVU");
|
||
if (par_type != NULL)
|
||
var_type = par_type;
|
||
|
||
for (i = 0; i < TYPE_NFIELDS (var_type); i += 1)
|
||
{
|
||
fprintf_filtered (stream, "\n%*swhen ", level + 4, "");
|
||
if (print_choices (var_type, i, stream, discr_type))
|
||
{
|
||
if (print_record_field_types (TYPE_FIELD_TYPE (var_type, i),
|
||
outer_type, stream, show, level + 4,
|
||
flags)
|
||
<= 0)
|
||
fprintf_filtered (stream, " null;");
|
||
}
|
||
else
|
||
print_selected_record_field_types (var_type, outer_type, i, i,
|
||
stream, show, level + 4, flags);
|
||
}
|
||
}
|
||
|
||
/* Assuming that field FIELD_NUM of TYPE is a variant part whose
|
||
discriminants are contained in OUTER_TYPE, print a description of it
|
||
on STREAM. LEVEL is the recursion (indentation) level, in case any of
|
||
the fields themselves have nested structure, and SHOW is the number of
|
||
levels of internal structure to show (see ada_print_type). For this
|
||
purpose, fields nested in a variant part are taken to be at the same
|
||
level as the fields immediately outside the variant part. */
|
||
|
||
static void
|
||
print_variant_part (struct type *type, int field_num, struct type *outer_type,
|
||
struct ui_file *stream, int show, int level,
|
||
const struct type_print_options *flags)
|
||
{
|
||
fprintf_filtered (stream, "\n%*scase %s is", level + 4, "",
|
||
ada_variant_discrim_name
|
||
(TYPE_FIELD_TYPE (type, field_num)));
|
||
print_variant_clauses (type, field_num, outer_type, stream, show,
|
||
level + 4, flags);
|
||
fprintf_filtered (stream, "\n%*send case;", level + 4, "");
|
||
}
|
||
|
||
/* Print a description on STREAM of the fields FLD0 through FLD1 in
|
||
record or union type TYPE, whose discriminants are in OUTER_TYPE.
|
||
LEVEL is the recursion (indentation) level, in case any of the
|
||
fields themselves have nested structure, and SHOW is the number of
|
||
levels of internal structure to show (see ada_print_type). Does
|
||
not print parent type information of TYPE. Returns 0 if no fields
|
||
printed, -1 for an incomplete type, else > 0. Prints each field
|
||
beginning on a new line, but does not put a new line at end. */
|
||
|
||
static int
|
||
print_selected_record_field_types (struct type *type, struct type *outer_type,
|
||
int fld0, int fld1,
|
||
struct ui_file *stream, int show, int level,
|
||
const struct type_print_options *flags)
|
||
{
|
||
int i, flds;
|
||
|
||
flds = 0;
|
||
|
||
if (fld0 > fld1 && TYPE_STUB (type))
|
||
return -1;
|
||
|
||
for (i = fld0; i <= fld1; i += 1)
|
||
{
|
||
QUIT;
|
||
|
||
if (ada_is_parent_field (type, i) || ada_is_ignored_field (type, i))
|
||
;
|
||
else if (ada_is_wrapper_field (type, i))
|
||
flds += print_record_field_types (TYPE_FIELD_TYPE (type, i), type,
|
||
stream, show, level, flags);
|
||
else if (ada_is_variant_part (type, i))
|
||
{
|
||
print_variant_part (type, i, outer_type, stream, show, level, flags);
|
||
flds = 1;
|
||
}
|
||
else
|
||
{
|
||
flds += 1;
|
||
fprintf_filtered (stream, "\n%*s", level + 4, "");
|
||
ada_print_type (TYPE_FIELD_TYPE (type, i),
|
||
TYPE_FIELD_NAME (type, i),
|
||
stream, show - 1, level + 4, flags);
|
||
fprintf_filtered (stream, ";");
|
||
}
|
||
}
|
||
|
||
return flds;
|
||
}
|
||
|
||
/* Print a description on STREAM of all fields of record or union type
|
||
TYPE, as for print_selected_record_field_types, above. */
|
||
|
||
static int
|
||
print_record_field_types (struct type *type, struct type *outer_type,
|
||
struct ui_file *stream, int show, int level,
|
||
const struct type_print_options *flags)
|
||
{
|
||
return print_selected_record_field_types (type, outer_type,
|
||
0, TYPE_NFIELDS (type) - 1,
|
||
stream, show, level, flags);
|
||
}
|
||
|
||
|
||
/* Print record type TYPE on STREAM. LEVEL is the recursion (indentation)
|
||
level, in case the element type itself has nested structure, and SHOW is
|
||
the number of levels of internal structure to show (see ada_print_type). */
|
||
|
||
static void
|
||
print_record_type (struct type *type0, struct ui_file *stream, int show,
|
||
int level, const struct type_print_options *flags)
|
||
{
|
||
struct type *parent_type;
|
||
struct type *type;
|
||
|
||
type = ada_find_parallel_type (type0, "___XVE");
|
||
if (type == NULL)
|
||
type = type0;
|
||
|
||
parent_type = ada_parent_type (type);
|
||
if (ada_type_name (parent_type) != NULL)
|
||
{
|
||
const char *parent_name = decoded_type_name (parent_type);
|
||
|
||
/* If we fail to decode the parent type name, then use the parent
|
||
type name as is. Not pretty, but should never happen except
|
||
when the debugging info is incomplete or incorrect. This
|
||
prevents a crash trying to print a NULL pointer. */
|
||
if (parent_name == NULL)
|
||
parent_name = ada_type_name (parent_type);
|
||
fprintf_filtered (stream, "new %s with record", parent_name);
|
||
}
|
||
else if (parent_type == NULL && ada_is_tagged_type (type, 0))
|
||
fprintf_filtered (stream, "tagged record");
|
||
else
|
||
fprintf_filtered (stream, "record");
|
||
|
||
if (show < 0)
|
||
fprintf_filtered (stream, " ... end record");
|
||
else
|
||
{
|
||
int flds;
|
||
|
||
flds = 0;
|
||
if (parent_type != NULL && ada_type_name (parent_type) == NULL)
|
||
flds += print_record_field_types (parent_type, parent_type,
|
||
stream, show, level, flags);
|
||
flds += print_record_field_types (type, type, stream, show, level,
|
||
flags);
|
||
|
||
if (flds > 0)
|
||
fprintf_filtered (stream, "\n%*send record", level, "");
|
||
else if (flds < 0)
|
||
fprintf_filtered (stream, _(" <incomplete type> end record"));
|
||
else
|
||
fprintf_filtered (stream, " null; end record");
|
||
}
|
||
}
|
||
|
||
/* Print the unchecked union type TYPE in something resembling Ada
|
||
format on STREAM. LEVEL is the recursion (indentation) level
|
||
in case the element type itself has nested structure, and SHOW is the
|
||
number of levels of internal structure to show (see ada_print_type). */
|
||
static void
|
||
print_unchecked_union_type (struct type *type, struct ui_file *stream,
|
||
int show, int level,
|
||
const struct type_print_options *flags)
|
||
{
|
||
if (show < 0)
|
||
fprintf_filtered (stream, "record (?) is ... end record");
|
||
else if (TYPE_NFIELDS (type) == 0)
|
||
fprintf_filtered (stream, "record (?) is null; end record");
|
||
else
|
||
{
|
||
int i;
|
||
|
||
fprintf_filtered (stream, "record (?) is\n%*scase ? is", level + 4, "");
|
||
|
||
for (i = 0; i < TYPE_NFIELDS (type); i += 1)
|
||
{
|
||
fprintf_filtered (stream, "\n%*swhen ? =>\n%*s", level + 8, "",
|
||
level + 12, "");
|
||
ada_print_type (TYPE_FIELD_TYPE (type, i),
|
||
TYPE_FIELD_NAME (type, i),
|
||
stream, show - 1, level + 12, flags);
|
||
fprintf_filtered (stream, ";");
|
||
}
|
||
|
||
fprintf_filtered (stream, "\n%*send case;\n%*send record",
|
||
level + 4, "", level, "");
|
||
}
|
||
}
|
||
|
||
|
||
|
||
/* Print function or procedure type TYPE on STREAM. Make it a header
|
||
for function or procedure NAME if NAME is not null. */
|
||
|
||
static void
|
||
print_func_type (struct type *type, struct ui_file *stream, const char *name,
|
||
const struct type_print_options *flags)
|
||
{
|
||
int i, len = TYPE_NFIELDS (type);
|
||
|
||
if (TYPE_TARGET_TYPE (type) != NULL
|
||
&& TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_VOID)
|
||
fprintf_filtered (stream, "procedure");
|
||
else
|
||
fprintf_filtered (stream, "function");
|
||
|
||
if (name != NULL && name[0] != '\0')
|
||
fprintf_filtered (stream, " %s", name);
|
||
|
||
if (len > 0)
|
||
{
|
||
fprintf_filtered (stream, " (");
|
||
for (i = 0; i < len; i += 1)
|
||
{
|
||
if (i > 0)
|
||
{
|
||
fputs_filtered ("; ", stream);
|
||
wrap_here (" ");
|
||
}
|
||
fprintf_filtered (stream, "a%d: ", i + 1);
|
||
ada_print_type (TYPE_FIELD_TYPE (type, i), "", stream, -1, 0,
|
||
flags);
|
||
}
|
||
fprintf_filtered (stream, ")");
|
||
}
|
||
|
||
if (TYPE_TARGET_TYPE (type) == NULL)
|
||
fprintf_filtered (stream, " return <unknown return type>");
|
||
else if (TYPE_CODE (TYPE_TARGET_TYPE (type)) != TYPE_CODE_VOID)
|
||
{
|
||
fprintf_filtered (stream, " return ");
|
||
ada_print_type (TYPE_TARGET_TYPE (type), "", stream, 0, 0, flags);
|
||
}
|
||
}
|
||
|
||
|
||
/* Print a description of a type TYPE0.
|
||
Output goes to STREAM (via stdio).
|
||
If VARSTRING is a non-empty string, print as an Ada variable/field
|
||
declaration.
|
||
SHOW+1 is the maximum number of levels of internal type structure
|
||
to show (this applies to record types, enumerated types, and
|
||
array types).
|
||
SHOW is the number of levels of internal type structure to show
|
||
when there is a type name for the SHOWth deepest level (0th is
|
||
outer level).
|
||
When SHOW<0, no inner structure is shown.
|
||
LEVEL indicates level of recursion (for nested definitions). */
|
||
|
||
void
|
||
ada_print_type (struct type *type0, const char *varstring,
|
||
struct ui_file *stream, int show, int level,
|
||
const struct type_print_options *flags)
|
||
{
|
||
struct type *type = ada_check_typedef (ada_get_base_type (type0));
|
||
char *type_name = decoded_type_name (type0);
|
||
int is_var_decl = (varstring != NULL && varstring[0] != '\0');
|
||
|
||
if (type == NULL)
|
||
{
|
||
if (is_var_decl)
|
||
fprintf_filtered (stream, "%.*s: ",
|
||
ada_name_prefix_len (varstring), varstring);
|
||
fprintf_filtered (stream, "<null type?>");
|
||
return;
|
||
}
|
||
|
||
if (show > 0)
|
||
type = ada_check_typedef (type);
|
||
|
||
if (is_var_decl && TYPE_CODE (type) != TYPE_CODE_FUNC)
|
||
fprintf_filtered (stream, "%.*s: ",
|
||
ada_name_prefix_len (varstring), varstring);
|
||
|
||
if (type_name != NULL && show <= 0 && !ada_is_aligner_type (type))
|
||
{
|
||
fprintf_filtered (stream, "%.*s",
|
||
ada_name_prefix_len (type_name), type_name);
|
||
return;
|
||
}
|
||
|
||
if (ada_is_aligner_type (type))
|
||
ada_print_type (ada_aligned_type (type), "", stream, show, level, flags);
|
||
else if (ada_is_constrained_packed_array_type (type)
|
||
&& TYPE_CODE (type) != TYPE_CODE_PTR)
|
||
print_array_type (type, stream, show, level, flags);
|
||
else
|
||
switch (TYPE_CODE (type))
|
||
{
|
||
default:
|
||
fprintf_filtered (stream, "<");
|
||
c_print_type (type, "", stream, show, level, flags);
|
||
fprintf_filtered (stream, ">");
|
||
break;
|
||
case TYPE_CODE_PTR:
|
||
case TYPE_CODE_TYPEDEF:
|
||
fprintf_filtered (stream, "access ");
|
||
ada_print_type (TYPE_TARGET_TYPE (type), "", stream, show, level,
|
||
flags);
|
||
break;
|
||
case TYPE_CODE_REF:
|
||
fprintf_filtered (stream, "<ref> ");
|
||
ada_print_type (TYPE_TARGET_TYPE (type), "", stream, show, level,
|
||
flags);
|
||
break;
|
||
case TYPE_CODE_ARRAY:
|
||
print_array_type (type, stream, show, level, flags);
|
||
break;
|
||
case TYPE_CODE_BOOL:
|
||
fprintf_filtered (stream, "(false, true)");
|
||
break;
|
||
case TYPE_CODE_INT:
|
||
if (ada_is_fixed_point_type (type))
|
||
print_fixed_point_type (type, stream);
|
||
else
|
||
{
|
||
const char *name = ada_type_name (type);
|
||
|
||
if (!ada_is_range_type_name (name))
|
||
fprintf_filtered (stream, _("<%d-byte integer>"),
|
||
TYPE_LENGTH (type));
|
||
else
|
||
{
|
||
fprintf_filtered (stream, "range ");
|
||
print_range_type (type, stream, 1 /* bounds_prefered_p */);
|
||
}
|
||
}
|
||
break;
|
||
case TYPE_CODE_RANGE:
|
||
if (ada_is_fixed_point_type (type))
|
||
print_fixed_point_type (type, stream);
|
||
else if (ada_is_modular_type (type))
|
||
fprintf_filtered (stream, "mod %s",
|
||
int_string (ada_modulus (type), 10, 0, 0, 1));
|
||
else
|
||
{
|
||
fprintf_filtered (stream, "range ");
|
||
print_range (type, stream, 1 /* bounds_prefered_p */);
|
||
}
|
||
break;
|
||
case TYPE_CODE_FLT:
|
||
fprintf_filtered (stream, _("<%d-byte float>"), TYPE_LENGTH (type));
|
||
break;
|
||
case TYPE_CODE_ENUM:
|
||
if (show < 0)
|
||
fprintf_filtered (stream, "(...)");
|
||
else
|
||
print_enum_type (type, stream);
|
||
break;
|
||
case TYPE_CODE_STRUCT:
|
||
if (ada_is_array_descriptor_type (type))
|
||
print_array_type (type, stream, show, level, flags);
|
||
else if (ada_is_bogus_array_descriptor (type))
|
||
fprintf_filtered (stream,
|
||
_("array (?) of ? (<mal-formed descriptor>)"));
|
||
else
|
||
print_record_type (type, stream, show, level, flags);
|
||
break;
|
||
case TYPE_CODE_UNION:
|
||
print_unchecked_union_type (type, stream, show, level, flags);
|
||
break;
|
||
case TYPE_CODE_FUNC:
|
||
print_func_type (type, stream, varstring, flags);
|
||
break;
|
||
}
|
||
}
|
||
|
||
/* Implement the la_print_typedef language method for Ada. */
|
||
|
||
void
|
||
ada_print_typedef (struct type *type, struct symbol *new_symbol,
|
||
struct ui_file *stream)
|
||
{
|
||
type = ada_check_typedef (type);
|
||
ada_print_type (type, "", stream, 0, 0, &type_print_raw_options);
|
||
fprintf_filtered (stream, "\n");
|
||
}
|