| /* Support for printing Pascal values for GDB, the GNU debugger. |
| |
| Copyright (C) 2000-2021 Free Software Foundation, Inc. |
| |
| This file is part of GDB. |
| |
| This program is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 3 of the License, or |
| (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| |
| /* This file is derived from c-valprint.c */ |
| |
| #include "defs.h" |
| #include "gdb_obstack.h" |
| #include "symtab.h" |
| #include "gdbtypes.h" |
| #include "expression.h" |
| #include "value.h" |
| #include "command.h" |
| #include "gdbcmd.h" |
| #include "gdbcore.h" |
| #include "demangle.h" |
| #include "valprint.h" |
| #include "typeprint.h" |
| #include "language.h" |
| #include "target.h" |
| #include "annotate.h" |
| #include "p-lang.h" |
| #include "cp-abi.h" |
| #include "cp-support.h" |
| #include "objfiles.h" |
| #include "gdbsupport/byte-vector.h" |
| #include "cli/cli-style.h" |
| |
| |
| static void pascal_object_print_value_fields (struct value *, struct ui_file *, |
| int, |
| const struct value_print_options *, |
| struct type **, int); |
| |
| /* Decorations for Pascal. */ |
| |
| static const struct generic_val_print_decorations p_decorations = |
| { |
| "", |
| " + ", |
| " * I", |
| "true", |
| "false", |
| "void", |
| "{", |
| "}" |
| }; |
| |
| /* See p-lang.h. */ |
| |
| void |
| pascal_language::value_print_inner (struct value *val, |
| struct ui_file *stream, int recurse, |
| const struct value_print_options *options) const |
| |
| { |
| struct type *type = check_typedef (value_type (val)); |
| struct gdbarch *gdbarch = type->arch (); |
| enum bfd_endian byte_order = type_byte_order (type); |
| unsigned int i = 0; /* Number of characters printed */ |
| unsigned len; |
| struct type *elttype; |
| unsigned eltlen; |
| int length_pos, length_size, string_pos; |
| struct type *char_type; |
| CORE_ADDR addr; |
| int want_space = 0; |
| const gdb_byte *valaddr = value_contents_for_printing (val); |
| |
| switch (type->code ()) |
| { |
| case TYPE_CODE_ARRAY: |
| { |
| LONGEST low_bound, high_bound; |
| |
| if (get_array_bounds (type, &low_bound, &high_bound)) |
| { |
| len = high_bound - low_bound + 1; |
| elttype = check_typedef (TYPE_TARGET_TYPE (type)); |
| eltlen = TYPE_LENGTH (elttype); |
| /* If 's' format is used, try to print out as string. |
| If no format is given, print as string if element type |
| is of TYPE_CODE_CHAR and element size is 1,2 or 4. */ |
| if (options->format == 's' |
| || ((eltlen == 1 || eltlen == 2 || eltlen == 4) |
| && elttype->code () == TYPE_CODE_CHAR |
| && options->format == 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; |
| |
| /* Look for a NULL char. */ |
| for (temp_len = 0; |
| extract_unsigned_integer (valaddr + temp_len * eltlen, |
| eltlen, byte_order) |
| && temp_len < len && temp_len < options->print_max; |
| temp_len++); |
| len = temp_len; |
| } |
| |
| printstr (stream, TYPE_TARGET_TYPE (type), valaddr, len, |
| NULL, 0, options); |
| i = len; |
| } |
| else |
| { |
| fprintf_filtered (stream, "{"); |
| /* If this is a virtual function table, print the 0th |
| entry specially, and the rest of the members normally. */ |
| if (pascal_object_is_vtbl_ptr_type (elttype)) |
| { |
| i = 1; |
| fprintf_filtered (stream, "%d vtable entries", len - 1); |
| } |
| else |
| { |
| i = 0; |
| } |
| value_print_array_elements (val, stream, recurse, options, i); |
| fprintf_filtered (stream, "}"); |
| } |
| break; |
| } |
| /* Array of unspecified length: treat like pointer to first elt. */ |
| addr = value_address (val); |
| } |
| goto print_unpacked_pointer; |
| |
| case TYPE_CODE_PTR: |
| if (options->format && options->format != 's') |
| { |
| value_print_scalar_formatted (val, options, 0, stream); |
| break; |
| } |
| if (options->vtblprint && pascal_object_is_vtbl_ptr_type (type)) |
| { |
| /* Print the unmangled name if desired. */ |
| /* Print vtable entry - we only get here if we ARE using |
| -fvtable_thunks. (Otherwise, look under TYPE_CODE_STRUCT.) */ |
| /* Extract the address, assume that it is unsigned. */ |
| addr = extract_unsigned_integer (valaddr, |
| TYPE_LENGTH (type), byte_order); |
| print_address_demangle (options, gdbarch, addr, stream, demangle); |
| break; |
| } |
| check_typedef (TYPE_TARGET_TYPE (type)); |
| |
| addr = unpack_pointer (type, valaddr); |
| print_unpacked_pointer: |
| elttype = check_typedef (TYPE_TARGET_TYPE (type)); |
| |
| if (elttype->code () == TYPE_CODE_FUNC) |
| { |
| /* Try to print what function it points to. */ |
| print_address_demangle (options, gdbarch, addr, stream, demangle); |
| return; |
| } |
| |
| if (options->addressprint && options->format != 's') |
| { |
| fputs_filtered (paddress (gdbarch, addr), stream); |
| want_space = 1; |
| } |
| |
| /* For a pointer to char or unsigned char, also print the string |
| pointed to, unless pointer is null. */ |
| if (((TYPE_LENGTH (elttype) == 1 |
| && (elttype->code () == TYPE_CODE_INT |
| || elttype->code () == TYPE_CODE_CHAR)) |
| || ((TYPE_LENGTH (elttype) == 2 || TYPE_LENGTH (elttype) == 4) |
| && elttype->code () == TYPE_CODE_CHAR)) |
| && (options->format == 0 || options->format == 's') |
| && addr != 0) |
| { |
| if (want_space) |
| fputs_filtered (" ", stream); |
| /* No wide string yet. */ |
| i = val_print_string (elttype, NULL, addr, -1, stream, options); |
| } |
| /* Also for pointers to pascal strings. */ |
| /* Note: this is Free Pascal specific: |
| as GDB does not recognize stabs pascal strings |
| Pascal strings are mapped to records |
| with lowercase names PM. */ |
| if (pascal_is_string_type (elttype, &length_pos, &length_size, |
| &string_pos, &char_type, NULL) > 0 |
| && addr != 0) |
| { |
| ULONGEST string_length; |
| gdb_byte *buffer; |
| |
| if (want_space) |
| fputs_filtered (" ", stream); |
| buffer = (gdb_byte *) xmalloc (length_size); |
| read_memory (addr + length_pos, buffer, length_size); |
| string_length = extract_unsigned_integer (buffer, length_size, |
| byte_order); |
| xfree (buffer); |
| i = val_print_string (char_type, NULL, |
| addr + string_pos, string_length, |
| stream, options); |
| } |
| else if (pascal_object_is_vtbl_member (type)) |
| { |
| /* Print vtbl's nicely. */ |
| CORE_ADDR vt_address = unpack_pointer (type, valaddr); |
| struct bound_minimal_symbol msymbol = |
| lookup_minimal_symbol_by_pc (vt_address); |
| |
| /* If 'symbol_print' is set, we did the work above. */ |
| if (!options->symbol_print |
| && (msymbol.minsym != NULL) |
| && (vt_address == BMSYMBOL_VALUE_ADDRESS (msymbol))) |
| { |
| if (want_space) |
| fputs_filtered (" ", stream); |
| fputs_filtered ("<", stream); |
| fputs_filtered (msymbol.minsym->print_name (), stream); |
| fputs_filtered (">", stream); |
| want_space = 1; |
| } |
| if (vt_address && options->vtblprint) |
| { |
| struct value *vt_val; |
| struct symbol *wsym = NULL; |
| struct type *wtype; |
| |
| if (want_space) |
| fputs_filtered (" ", stream); |
| |
| if (msymbol.minsym != NULL) |
| { |
| const char *search_name = msymbol.minsym->search_name (); |
| wsym = lookup_symbol_search_name (search_name, NULL, |
| VAR_DOMAIN).symbol; |
| } |
| |
| if (wsym) |
| { |
| wtype = SYMBOL_TYPE (wsym); |
| } |
| else |
| { |
| wtype = TYPE_TARGET_TYPE (type); |
| } |
| vt_val = value_at (wtype, vt_address); |
| common_val_print (vt_val, stream, recurse + 1, options, |
| current_language); |
| if (options->prettyformat) |
| { |
| fprintf_filtered (stream, "\n"); |
| print_spaces_filtered (2 + 2 * recurse, stream); |
| } |
| } |
| } |
| |
| return; |
| |
| case TYPE_CODE_REF: |
| case TYPE_CODE_ENUM: |
| case TYPE_CODE_FLAGS: |
| case TYPE_CODE_FUNC: |
| case TYPE_CODE_RANGE: |
| case TYPE_CODE_INT: |
| case TYPE_CODE_FLT: |
| case TYPE_CODE_VOID: |
| case TYPE_CODE_ERROR: |
| case TYPE_CODE_UNDEF: |
| case TYPE_CODE_BOOL: |
| case TYPE_CODE_CHAR: |
| generic_value_print (val, stream, recurse, options, &p_decorations); |
| break; |
| |
| case TYPE_CODE_UNION: |
| if (recurse && !options->unionprint) |
| { |
| fprintf_filtered (stream, "{...}"); |
| break; |
| } |
| /* Fall through. */ |
| case TYPE_CODE_STRUCT: |
| if (options->vtblprint && pascal_object_is_vtbl_ptr_type (type)) |
| { |
| /* Print the unmangled name if desired. */ |
| /* Print vtable entry - we only get here if NOT using |
| -fvtable_thunks. (Otherwise, look under TYPE_CODE_PTR.) */ |
| /* Extract the address, assume that it is unsigned. */ |
| print_address_demangle |
| (options, gdbarch, |
| extract_unsigned_integer |
| (valaddr + TYPE_FIELD_BITPOS (type, VTBL_FNADDR_OFFSET) / 8, |
| TYPE_LENGTH (type->field (VTBL_FNADDR_OFFSET).type ()), |
| byte_order), |
| stream, demangle); |
| } |
| else |
| { |
| if (pascal_is_string_type (type, &length_pos, &length_size, |
| &string_pos, &char_type, NULL) > 0) |
| { |
| len = extract_unsigned_integer (valaddr + length_pos, |
| length_size, byte_order); |
| printstr (stream, char_type, valaddr + string_pos, len, |
| NULL, 0, options); |
| } |
| else |
| pascal_object_print_value_fields (val, stream, recurse, |
| options, NULL, 0); |
| } |
| break; |
| |
| case TYPE_CODE_SET: |
| elttype = type->index_type (); |
| elttype = check_typedef (elttype); |
| if (elttype->is_stub ()) |
| { |
| fprintf_styled (stream, metadata_style.style (), "<incomplete type>"); |
| break; |
| } |
| else |
| { |
| struct type *range = elttype; |
| LONGEST low_bound, high_bound; |
| int need_comma = 0; |
| |
| fputs_filtered ("[", stream); |
| |
| int bound_info = (get_discrete_bounds (range, &low_bound, &high_bound) |
| ? 0 : -1); |
| if (low_bound == 0 && high_bound == -1 && TYPE_LENGTH (type) > 0) |
| { |
| /* If we know the size of the set type, we can figure out the |
| maximum value. */ |
| bound_info = 0; |
| high_bound = TYPE_LENGTH (type) * TARGET_CHAR_BIT - 1; |
| range->bounds ()->high.set_const_val (high_bound); |
| } |
| maybe_bad_bstring: |
| if (bound_info < 0) |
| { |
| fputs_styled ("<error value>", metadata_style.style (), stream); |
| goto done; |
| } |
| |
| for (i = low_bound; i <= high_bound; i++) |
| { |
| int element = value_bit_index (type, valaddr, i); |
| |
| if (element < 0) |
| { |
| i = element; |
| goto maybe_bad_bstring; |
| } |
| if (element) |
| { |
| if (need_comma) |
| fputs_filtered (", ", stream); |
| print_type_scalar (range, i, stream); |
| need_comma = 1; |
| |
| if (i + 1 <= high_bound |
| && value_bit_index (type, valaddr, ++i)) |
| { |
| int j = i; |
| |
| fputs_filtered ("..", stream); |
| while (i + 1 <= high_bound |
| && value_bit_index (type, valaddr, ++i)) |
| j = i; |
| print_type_scalar (range, j, stream); |
| } |
| } |
| } |
| done: |
| fputs_filtered ("]", stream); |
| } |
| break; |
| |
| default: |
| error (_("Invalid pascal type code %d in symbol table."), |
| type->code ()); |
| } |
| } |
| |
| |
| void |
| pascal_language::value_print (struct value *val, struct ui_file *stream, |
| const struct value_print_options *options) const |
| { |
| struct type *type = value_type (val); |
| struct value_print_options opts = *options; |
| |
| opts.deref_ref = 1; |
| |
| /* If it is a pointer, indicate what it points to. |
| |
| Print type also if it is a reference. |
| |
| Object pascal: if it is a member pointer, we will take care |
| of that when we print it. */ |
| if (type->code () == TYPE_CODE_PTR |
| || type->code () == TYPE_CODE_REF) |
| { |
| /* Hack: remove (char *) for char strings. Their |
| type is indicated by the quoted string anyway. */ |
| if (type->code () == TYPE_CODE_PTR |
| && type->name () == NULL |
| && TYPE_TARGET_TYPE (type)->name () != NULL |
| && strcmp (TYPE_TARGET_TYPE (type)->name (), "char") == 0) |
| { |
| /* Print nothing. */ |
| } |
| else |
| { |
| fprintf_filtered (stream, "("); |
| type_print (type, "", stream, -1); |
| fprintf_filtered (stream, ") "); |
| } |
| } |
| common_val_print (val, stream, 0, &opts, current_language); |
| } |
| |
| |
| static void |
| show_pascal_static_field_print (struct ui_file *file, int from_tty, |
| struct cmd_list_element *c, const char *value) |
| { |
| fprintf_filtered (file, _("Printing of pascal static members is %s.\n"), |
| value); |
| } |
| |
| static struct obstack dont_print_vb_obstack; |
| static struct obstack dont_print_statmem_obstack; |
| |
| static void pascal_object_print_static_field (struct value *, |
| struct ui_file *, int, |
| const struct value_print_options *); |
| |
| static void pascal_object_print_value (struct value *, struct ui_file *, int, |
| const struct value_print_options *, |
| struct type **); |
| |
| /* It was changed to this after 2.4.5. */ |
| const char pascal_vtbl_ptr_name[] = |
| {'_', '_', 'v', 't', 'b', 'l', '_', 'p', 't', 'r', '_', 't', 'y', 'p', 'e', 0}; |
| |
| /* Return truth value for assertion that TYPE is of the type |
| "pointer to virtual function". */ |
| |
| int |
| pascal_object_is_vtbl_ptr_type (struct type *type) |
| { |
| const char *type_name = type->name (); |
| |
| return (type_name != NULL |
| && strcmp (type_name, pascal_vtbl_ptr_name) == 0); |
| } |
| |
| /* Return truth value for the assertion that TYPE is of the type |
| "pointer to virtual function table". */ |
| |
| int |
| pascal_object_is_vtbl_member (struct type *type) |
| { |
| if (type->code () == TYPE_CODE_PTR) |
| { |
| type = TYPE_TARGET_TYPE (type); |
| if (type->code () == TYPE_CODE_ARRAY) |
| { |
| type = TYPE_TARGET_TYPE (type); |
| if (type->code () == TYPE_CODE_STRUCT /* If not using |
| thunks. */ |
| || type->code () == TYPE_CODE_PTR) /* If using thunks. */ |
| { |
| /* Virtual functions tables are full of pointers |
| to virtual functions. */ |
| return pascal_object_is_vtbl_ptr_type (type); |
| } |
| } |
| } |
| return 0; |
| } |
| |
| /* Helper function for print pascal objects. |
| |
| VAL, STREAM, RECURSE, and OPTIONS have the same meanings as in |
| pascal_object_print_value and c_value_print. |
| |
| DONT_PRINT is an array of baseclass types that we |
| should not print, or zero if called from top level. */ |
| |
| static void |
| pascal_object_print_value_fields (struct value *val, struct ui_file *stream, |
| int recurse, |
| const struct value_print_options *options, |
| struct type **dont_print_vb, |
| int dont_print_statmem) |
| { |
| int i, len, n_baseclasses; |
| char *last_dont_print |
| = (char *) obstack_next_free (&dont_print_statmem_obstack); |
| |
| struct type *type = check_typedef (value_type (val)); |
| |
| fprintf_filtered (stream, "{"); |
| len = type->num_fields (); |
| n_baseclasses = TYPE_N_BASECLASSES (type); |
| |
| /* Print out baseclasses such that we don't print |
| duplicates of virtual baseclasses. */ |
| if (n_baseclasses > 0) |
| pascal_object_print_value (val, stream, recurse + 1, |
| options, dont_print_vb); |
| |
| if (!len && n_baseclasses == 1) |
| fprintf_styled (stream, metadata_style.style (), "<No data fields>"); |
| else |
| { |
| struct obstack tmp_obstack = dont_print_statmem_obstack; |
| int fields_seen = 0; |
| const gdb_byte *valaddr = value_contents_for_printing (val); |
| |
| if (dont_print_statmem == 0) |
| { |
| /* If we're at top level, carve out a completely fresh |
| chunk of the obstack and use that until this particular |
| invocation returns. */ |
| obstack_finish (&dont_print_statmem_obstack); |
| } |
| |
| for (i = n_baseclasses; i < len; i++) |
| { |
| /* If requested, skip printing of static fields. */ |
| if (!options->pascal_static_field_print |
| && field_is_static (&type->field (i))) |
| continue; |
| if (fields_seen) |
| fprintf_filtered (stream, ", "); |
| else if (n_baseclasses > 0) |
| { |
| if (options->prettyformat) |
| { |
| fprintf_filtered (stream, "\n"); |
| print_spaces_filtered (2 + 2 * recurse, stream); |
| fputs_filtered ("members of ", stream); |
| fputs_filtered (type->name (), stream); |
| fputs_filtered (": ", stream); |
| } |
| } |
| fields_seen = 1; |
| |
| if (options->prettyformat) |
| { |
| fprintf_filtered (stream, "\n"); |
| print_spaces_filtered (2 + 2 * recurse, stream); |
| } |
| else |
| { |
| wrap_here (n_spaces (2 + 2 * recurse)); |
| } |
| |
| annotate_field_begin (type->field (i).type ()); |
| |
| if (field_is_static (&type->field (i))) |
| { |
| fputs_filtered ("static ", stream); |
| fprintf_symbol_filtered (stream, |
| type->field (i).name (), |
| current_language->la_language, |
| DMGL_PARAMS | DMGL_ANSI); |
| } |
| else |
| fputs_styled (type->field (i).name (), |
| variable_name_style.style (), stream); |
| annotate_field_name_end (); |
| fputs_filtered (" = ", stream); |
| annotate_field_value (); |
| |
| if (!field_is_static (&type->field (i)) |
| && TYPE_FIELD_PACKED (type, i)) |
| { |
| struct value *v; |
| |
| /* Bitfields require special handling, especially due to byte |
| order problems. */ |
| if (TYPE_FIELD_IGNORE (type, i)) |
| { |
| fputs_styled ("<optimized out or zero length>", |
| metadata_style.style (), stream); |
| } |
| else if (value_bits_synthetic_pointer (val, |
| TYPE_FIELD_BITPOS (type, |
| i), |
| TYPE_FIELD_BITSIZE (type, |
| i))) |
| { |
| fputs_styled (_("<synthetic pointer>"), |
| metadata_style.style (), stream); |
| } |
| else |
| { |
| struct value_print_options opts = *options; |
| |
| v = value_field_bitfield (type, i, valaddr, 0, val); |
| |
| opts.deref_ref = 0; |
| common_val_print (v, stream, recurse + 1, &opts, |
| current_language); |
| } |
| } |
| else |
| { |
| if (TYPE_FIELD_IGNORE (type, i)) |
| { |
| fputs_styled ("<optimized out or zero length>", |
| metadata_style.style (), stream); |
| } |
| else if (field_is_static (&type->field (i))) |
| { |
| /* struct value *v = value_static_field (type, i); |
| v4.17 specific. */ |
| struct value *v; |
| |
| v = value_field_bitfield (type, i, valaddr, 0, val); |
| |
| if (v == NULL) |
| val_print_optimized_out (NULL, stream); |
| else |
| pascal_object_print_static_field (v, stream, recurse + 1, |
| options); |
| } |
| else |
| { |
| struct value_print_options opts = *options; |
| |
| opts.deref_ref = 0; |
| |
| struct value *v = value_primitive_field (val, 0, i, |
| value_type (val)); |
| common_val_print (v, stream, recurse + 1, &opts, |
| current_language); |
| } |
| } |
| annotate_field_end (); |
| } |
| |
| if (dont_print_statmem == 0) |
| { |
| /* Free the space used to deal with the printing |
| of the members from top level. */ |
| obstack_free (&dont_print_statmem_obstack, last_dont_print); |
| dont_print_statmem_obstack = tmp_obstack; |
| } |
| |
| if (options->prettyformat) |
| { |
| fprintf_filtered (stream, "\n"); |
| print_spaces_filtered (2 * recurse, stream); |
| } |
| } |
| fprintf_filtered (stream, "}"); |
| } |
| |
| /* Special val_print routine to avoid printing multiple copies of virtual |
| baseclasses. */ |
| |
| static void |
| pascal_object_print_value (struct value *val, struct ui_file *stream, |
| int recurse, |
| const struct value_print_options *options, |
| struct type **dont_print_vb) |
| { |
| struct type **last_dont_print |
| = (struct type **) obstack_next_free (&dont_print_vb_obstack); |
| struct obstack tmp_obstack = dont_print_vb_obstack; |
| struct type *type = check_typedef (value_type (val)); |
| int i, n_baseclasses = TYPE_N_BASECLASSES (type); |
| |
| if (dont_print_vb == 0) |
| { |
| /* If we're at top level, carve out a completely fresh |
| chunk of the obstack and use that until this particular |
| invocation returns. */ |
| /* Bump up the high-water mark. Now alpha is omega. */ |
| obstack_finish (&dont_print_vb_obstack); |
| } |
| |
| for (i = 0; i < n_baseclasses; i++) |
| { |
| LONGEST boffset = 0; |
| struct type *baseclass = check_typedef (TYPE_BASECLASS (type, i)); |
| const char *basename = baseclass->name (); |
| int skip = 0; |
| |
| if (BASETYPE_VIA_VIRTUAL (type, i)) |
| { |
| struct type **first_dont_print |
| = (struct type **) obstack_base (&dont_print_vb_obstack); |
| |
| int j = (struct type **) obstack_next_free (&dont_print_vb_obstack) |
| - first_dont_print; |
| |
| while (--j >= 0) |
| if (baseclass == first_dont_print[j]) |
| goto flush_it; |
| |
| obstack_ptr_grow (&dont_print_vb_obstack, baseclass); |
| } |
| |
| struct value *base_value; |
| try |
| { |
| base_value = value_primitive_field (val, 0, i, type); |
| } |
| catch (const gdb_exception_error &ex) |
| { |
| base_value = nullptr; |
| if (ex.error == NOT_AVAILABLE_ERROR) |
| skip = -1; |
| else |
| skip = 1; |
| } |
| |
| if (skip == 0) |
| { |
| /* The virtual base class pointer might have been clobbered by the |
| user program. Make sure that it still points to a valid memory |
| location. */ |
| |
| if (boffset < 0 || boffset >= TYPE_LENGTH (type)) |
| { |
| CORE_ADDR address= value_address (val); |
| gdb::byte_vector buf (TYPE_LENGTH (baseclass)); |
| |
| if (target_read_memory (address + boffset, buf.data (), |
| TYPE_LENGTH (baseclass)) != 0) |
| skip = 1; |
| base_value = value_from_contents_and_address (baseclass, |
| buf.data (), |
| address + boffset); |
| baseclass = value_type (base_value); |
| boffset = 0; |
| } |
| } |
| |
| if (options->prettyformat) |
| { |
| fprintf_filtered (stream, "\n"); |
| print_spaces_filtered (2 * recurse, stream); |
| } |
| fputs_filtered ("<", stream); |
| /* Not sure what the best notation is in the case where there is no |
| baseclass name. */ |
| |
| fputs_filtered (basename ? basename : "", stream); |
| fputs_filtered ("> = ", stream); |
| |
| if (skip < 0) |
| val_print_unavailable (stream); |
| else if (skip > 0) |
| val_print_invalid_address (stream); |
| else |
| pascal_object_print_value_fields |
| (base_value, stream, recurse, options, |
| (struct type **) obstack_base (&dont_print_vb_obstack), |
| 0); |
| fputs_filtered (", ", stream); |
| |
| flush_it: |
| ; |
| } |
| |
| if (dont_print_vb == 0) |
| { |
| /* Free the space used to deal with the printing |
| of this type from top level. */ |
| obstack_free (&dont_print_vb_obstack, last_dont_print); |
| /* Reset watermark so that we can continue protecting |
| ourselves from whatever we were protecting ourselves. */ |
| dont_print_vb_obstack = tmp_obstack; |
| } |
| } |
| |
| /* Print value of a static member. |
| To avoid infinite recursion when printing a class that contains |
| a static instance of the class, we keep the addresses of all printed |
| static member classes in an obstack and refuse to print them more |
| than once. |
| |
| VAL contains the value to print, STREAM, RECURSE, and OPTIONS |
| have the same meanings as in c_val_print. */ |
| |
| static void |
| pascal_object_print_static_field (struct value *val, |
| struct ui_file *stream, |
| int recurse, |
| const struct value_print_options *options) |
| { |
| struct type *type = value_type (val); |
| struct value_print_options opts; |
| |
| if (value_entirely_optimized_out (val)) |
| { |
| val_print_optimized_out (val, stream); |
| return; |
| } |
| |
| if (type->code () == TYPE_CODE_STRUCT) |
| { |
| CORE_ADDR *first_dont_print, addr; |
| int i; |
| |
| first_dont_print |
| = (CORE_ADDR *) obstack_base (&dont_print_statmem_obstack); |
| i = (CORE_ADDR *) obstack_next_free (&dont_print_statmem_obstack) |
| - first_dont_print; |
| |
| while (--i >= 0) |
| { |
| if (value_address (val) == first_dont_print[i]) |
| { |
| fputs_styled (_("\ |
| <same as static member of an already seen type>"), |
| metadata_style.style (), stream); |
| return; |
| } |
| } |
| |
| addr = value_address (val); |
| obstack_grow (&dont_print_statmem_obstack, (char *) &addr, |
| sizeof (CORE_ADDR)); |
| |
| type = check_typedef (type); |
| pascal_object_print_value_fields (val, stream, recurse, |
| options, NULL, 1); |
| return; |
| } |
| |
| opts = *options; |
| opts.deref_ref = 0; |
| common_val_print (val, stream, recurse, &opts, current_language); |
| } |
| |
| void _initialize_pascal_valprint (); |
| void |
| _initialize_pascal_valprint () |
| { |
| add_setshow_boolean_cmd ("pascal_static-members", class_support, |
| &user_print_options.pascal_static_field_print, _("\ |
| Set printing of pascal static members."), _("\ |
| Show printing of pascal static members."), NULL, |
| NULL, |
| show_pascal_static_field_print, |
| &setprintlist, &showprintlist); |
| } |