enum ext_lang_rc
gdbpy_apply_val_pretty_printer (const struct extension_language_defn *extlang,
struct type *type,
LONGEST embedded_offset, CORE_ADDR address,
struct ui_file *stream, int recurse,
struct value *val,
const struct value_print_options *options,
const struct language_defn *language)
{
struct gdbarch *gdbarch = get_type_arch (type);
struct value *value;
enum string_repr_result print_result;
if (value_lazy (val))
value_fetch_lazy (val);
/* No pretty-printer support for unavailable values. */
if (!value_bytes_available (val, embedded_offset, TYPE_LENGTH (type)))
return EXT_LANG_RC_NOP;
if (!gdb_python_initialized)
return EXT_LANG_RC_NOP;
gdbpy_enter enter_py (gdbarch, language);
/* Instantiate the printer. */
value = value_from_component (val, type, embedded_offset);
gdbpy_ref<> val_obj (value_to_value_object (value));
if (val_obj == NULL)
{
print_stack_unless_memory_error (stream);
return EXT_LANG_RC_ERROR;
}
/* Find the constructor. */
gdbpy_ref<> printer (find_pretty_printer (val_obj.get ()));
if (printer == NULL)
{
print_stack_unless_memory_error (stream);
return EXT_LANG_RC_ERROR;
}
if (printer == Py_None)
return EXT_LANG_RC_NOP;
/* If we are printing a map, we want some special formatting. */
gdb::unique_xmalloc_ptr<char> hint (gdbpy_get_display_hint (printer.get ()));
/* Print the section */
print_result = print_string_repr (printer.get (), hint.get (), stream,
recurse, options, language, gdbarch);
if (print_result != string_repr_error)
print_children (printer.get (), hint.get (), stream, recurse, options,
language, print_result == string_repr_none);
if (PyErr_Occurred ())
print_stack_unless_memory_error (stream);
return EXT_LANG_RC_OK;
}
struct value *
value_subscripted_rvalue (struct value *array, LONGEST index, int lowerbound)
{
struct type *array_type = check_typedef (value_type (array));
struct type *elt_type = check_typedef (TYPE_TARGET_TYPE (array_type));
ULONGEST elt_size = type_length_units (elt_type);
ULONGEST elt_offs = elt_size * (index - lowerbound);
if (index < lowerbound
|| (!TYPE_ARRAY_UPPER_BOUND_IS_UNDEFINED (array_type)
&& elt_offs >= type_length_units (array_type))
|| (VALUE_LVAL (array) != lval_memory
&& TYPE_ARRAY_UPPER_BOUND_IS_UNDEFINED (array_type)))
{
if (type_not_associated (array_type))
error (_("no such vector element (vector not associated)"));
else if (type_not_allocated (array_type))
error (_("no such vector element (vector not allocated)"));
else
error (_("no such vector element"));
}
if (is_dynamic_type (elt_type))
{
CORE_ADDR address;
address = value_address (array) + elt_offs;
elt_type = resolve_dynamic_type (elt_type, NULL, address);
}
return value_from_component (array, elt_type, elt_offs);
}
enum ext_lang_rc
gdbscm_apply_val_pretty_printer (const struct extension_language_defn *extlang,
struct type *type,
LONGEST embedded_offset, CORE_ADDR address,
struct ui_file *stream, int recurse,
struct value *val,
const struct value_print_options *options,
const struct language_defn *language)
{
struct gdbarch *gdbarch = get_type_arch (type);
SCM exception = SCM_BOOL_F;
SCM printer = SCM_BOOL_F;
SCM val_obj = SCM_BOOL_F;
struct value *value;
enum display_hint hint;
enum ext_lang_rc result = EXT_LANG_RC_NOP;
enum string_repr_result print_result;
if (value_lazy (val))
value_fetch_lazy (val);
/* No pretty-printer support for unavailable values. */
if (!value_bytes_available (val, embedded_offset, TYPE_LENGTH (type)))
return EXT_LANG_RC_NOP;
if (!gdb_scheme_initialized)
return EXT_LANG_RC_NOP;
/* Instantiate the printer. */
value = value_from_component (val, type, embedded_offset);
val_obj = vlscm_scm_from_value (value);
if (gdbscm_is_exception (val_obj))
{
exception = val_obj;
result = EXT_LANG_RC_ERROR;
goto done;
}
printer = ppscm_find_pretty_printer (val_obj);
if (gdbscm_is_exception (printer))
{
exception = printer;
result = EXT_LANG_RC_ERROR;
goto done;
}
if (gdbscm_is_false (printer))
{
result = EXT_LANG_RC_NOP;
goto done;
}
gdb_assert (ppscm_is_pretty_printer_worker (printer));
/* If we are printing a map, we want some special formatting. */
hint = ppscm_get_display_hint_enum (printer);
if (hint == HINT_ERROR)
{
/* Print the error as an exception for consistency. */
SCM hint_scm = ppscm_get_display_hint_scm (printer);
ppscm_print_pp_type_error ("Invalid display hint", hint_scm);
/* Fall through. A bad hint doesn't stop pretty-printing. */
hint = HINT_NONE;
}
/* Print the section. */
print_result = ppscm_print_string_repr (printer, hint, stream, recurse,
options, gdbarch, language);
if (print_result != STRING_REPR_ERROR)
{
ppscm_print_children (printer, hint, stream, recurse, options,
gdbarch, language,
print_result == STRING_REPR_NONE);
}
result = EXT_LANG_RC_OK;
done:
if (gdbscm_is_exception (exception))
ppscm_print_exception_unless_memory_error (exception, stream);
return result;
}
