/* Python interface to values.
- Copyright (C) 2008-2017 Free Software Foundation, Inc.
+ Copyright (C) 2008-2019 Free Software Foundation, Inc.
This file is part of GDB.
#include "charset.h"
#include "value.h"
#include "language.h"
-#include "dfp.h"
+#include "target-float.h"
#include "valprint.h"
#include "infcall.h"
#include "expression.h"
#include "python.h"
#include "python-internal.h"
-#include "py-ref.h"
/* Even though Python scalar types directly map to host types, we use
target types here to remain consistent with the values system in
if (self->next)
self->next->prev = self->prev;
- value_free (self->value);
-
- if (self->address)
- /* Use braces to appease gcc warning. *sigh* */
- {
- Py_DECREF (self->address);
- }
-
- if (self->type)
- {
- Py_DECREF (self->type);
- }
+ value_decref (self->value);
+ Py_XDECREF (self->address);
+ Py_XDECREF (self->type);
Py_XDECREF (self->dynamic_type);
Py_TYPE (self)->tp_free (self);
values_in_python = value_obj;
}
+/* Convert a python object OBJ with type TYPE to a gdb value. The
+ python object in question must conform to the python buffer
+ protocol. On success, return the converted value, otherwise
+ nullptr. */
+
+static struct value *
+convert_buffer_and_type_to_value (PyObject *obj, struct type *type)
+{
+ Py_buffer_up buffer_up;
+ Py_buffer py_buf;
+
+ if (PyObject_CheckBuffer (obj)
+ && PyObject_GetBuffer (obj, &py_buf, PyBUF_SIMPLE) == 0)
+ {
+ /* Got a buffer, py_buf, out of obj. Cause it to be released
+ when it goes out of scope. */
+ buffer_up.reset (&py_buf);
+ }
+ else
+ {
+ PyErr_SetString (PyExc_TypeError,
+ _("Object must support the python buffer protocol."));
+ return nullptr;
+ }
+
+ if (TYPE_LENGTH (type) > py_buf.len)
+ {
+ PyErr_SetString (PyExc_ValueError,
+ _("Size of type is larger than that of buffer object."));
+ return nullptr;
+ }
+
+ return value_from_contents (type, (const gdb_byte *) py_buf.buf);
+}
+
/* Called when a new gdb.Value object needs to be allocated. Returns NULL on
error, with a python exception set. */
static PyObject *
-valpy_new (PyTypeObject *subtype, PyObject *args, PyObject *keywords)
+valpy_new (PyTypeObject *subtype, PyObject *args, PyObject *kwargs)
{
- struct value *value = NULL; /* Initialize to appease gcc warning. */
- value_object *value_obj;
+ static const char *keywords[] = { "val", "type", NULL };
+ PyObject *val_obj = nullptr;
+ PyObject *type_obj = nullptr;
+
+ if (!gdb_PyArg_ParseTupleAndKeywords (args, kwargs, "O|O", keywords,
+ &val_obj, &type_obj))
+ return nullptr;
+
+ struct type *type = nullptr;
- if (PyTuple_Size (args) != 1)
+ if (type_obj != nullptr)
{
- PyErr_SetString (PyExc_TypeError, _("Value object creation takes only "
- "1 argument"));
- return NULL;
+ type = type_object_to_type (type_obj);
+ if (type == nullptr)
+ {
+ PyErr_SetString (PyExc_TypeError,
+ _("type argument must be a gdb.Type."));
+ return nullptr;
+ }
}
- value_obj = (value_object *) subtype->tp_alloc (subtype, 1);
+ value_object *value_obj = (value_object *) subtype->tp_alloc (subtype, 1);
if (value_obj == NULL)
{
PyErr_SetString (PyExc_MemoryError, _("Could not allocate memory to "
return NULL;
}
- value = convert_value_from_python (PyTuple_GetItem (args, 0));
- if (value == NULL)
+ struct value *value;
+
+ if (type == nullptr)
+ value = convert_value_from_python (val_obj);
+ else
+ value = convert_buffer_and_type_to_value (val_obj, type);
+
+ if (value == nullptr)
{
subtype->tp_free (value_obj);
return NULL;
}
- value_obj->value = value;
- release_value_or_incref (value);
+ value_obj->value = release_value (value).release ();
value_obj->address = NULL;
value_obj->type = NULL;
value_obj->dynamic_type = NULL;
{
PyObject *result = NULL;
- TRY
+ try
{
struct value *res_val;
- struct cleanup *cleanup = make_cleanup_value_free_to_mark (value_mark ());
+ scoped_value_mark free_values;
res_val = value_ind (((value_object *) self)->value);
result = value_to_value_object (res_val);
- do_cleanups (cleanup);
}
- CATCH (except, RETURN_MASK_ALL)
+ catch (const gdb_exception &except)
{
GDB_PY_HANDLE_EXCEPTION (except);
}
- END_CATCH
return result;
}
{
PyObject *result = NULL;
- TRY
+ try
{
struct value *self_val, *res_val;
- struct cleanup *cleanup = make_cleanup_value_free_to_mark (value_mark ());
+ scoped_value_mark free_values;
self_val = ((value_object *) self)->value;
switch (TYPE_CODE (check_typedef (value_type (self_val))))
res_val = value_ind (self_val);
break;
case TYPE_CODE_REF:
+ case TYPE_CODE_RVALUE_REF:
res_val = coerce_ref (self_val);
break;
default:
}
result = value_to_value_object (res_val);
- do_cleanups (cleanup);
}
- CATCH (except, RETURN_MASK_ALL)
+ catch (const gdb_exception &except)
{
GDB_PY_HANDLE_EXCEPTION (except);
}
- END_CATCH
return result;
}
/* Return a value which is a reference to the value. */
static PyObject *
-valpy_reference_value (PyObject *self, PyObject *args)
+valpy_reference_value (PyObject *self, PyObject *args, enum type_code refcode)
{
PyObject *result = NULL;
- TRY
+ try
{
struct value *self_val;
- struct cleanup *cleanup = make_cleanup_value_free_to_mark (value_mark ());
+ scoped_value_mark free_values;
self_val = ((value_object *) self)->value;
- result = value_to_value_object (value_ref (self_val));
-
- do_cleanups (cleanup);
+ result = value_to_value_object (value_ref (self_val, refcode));
}
- CATCH (except, RETURN_MASK_ALL)
+ catch (const gdb_exception &except)
{
GDB_PY_HANDLE_EXCEPTION (except);
}
- END_CATCH
return result;
}
+static PyObject *
+valpy_lvalue_reference_value (PyObject *self, PyObject *args)
+{
+ return valpy_reference_value (self, args, TYPE_CODE_REF);
+}
+
+static PyObject *
+valpy_rvalue_reference_value (PyObject *self, PyObject *args)
+{
+ return valpy_reference_value (self, args, TYPE_CODE_RVALUE_REF);
+}
+
/* Return a "const" qualified version of the value. */
static PyObject *
{
PyObject *result = NULL;
- TRY
+ try
{
struct value *self_val, *res_val;
- struct cleanup *cleanup = make_cleanup_value_free_to_mark (value_mark ());
+ scoped_value_mark free_values;
self_val = ((value_object *) self)->value;
res_val = make_cv_value (1, 0, self_val);
result = value_to_value_object (res_val);
-
- do_cleanups (cleanup);
}
- CATCH (except, RETURN_MASK_ALL)
+ catch (const gdb_exception &except)
{
GDB_PY_HANDLE_EXCEPTION (except);
}
- END_CATCH
return result;
}
if (!val_obj->address)
{
- TRY
+ try
{
struct value *res_val;
- struct cleanup *cleanup
- = make_cleanup_value_free_to_mark (value_mark ());
+ scoped_value_mark free_values;
res_val = value_addr (val_obj->value);
val_obj->address = value_to_value_object (res_val);
- do_cleanups (cleanup);
}
- CATCH (except, RETURN_MASK_ALL)
+ catch (const gdb_exception &except)
{
val_obj->address = Py_None;
Py_INCREF (Py_None);
}
- END_CATCH
}
Py_XINCREF (val_obj->address);
return obj->dynamic_type;
}
- TRY
+ try
{
struct value *val = obj->value;
- struct cleanup *cleanup = make_cleanup_value_free_to_mark (value_mark ());
+ scoped_value_mark free_values;
type = value_type (val);
type = check_typedef (type);
- if (((TYPE_CODE (type) == TYPE_CODE_PTR)
- || (TYPE_CODE (type) == TYPE_CODE_REF))
+ if (((TYPE_CODE (type) == TYPE_CODE_PTR) || TYPE_IS_REFERENCE (type))
&& (TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_STRUCT))
{
struct value *target;
if (was_pointer)
type = lookup_pointer_type (type);
else
- type = lookup_reference_type (type);
+ type = lookup_lvalue_reference_type (type);
}
}
else if (TYPE_CODE (type) == TYPE_CODE_STRUCT)
/* Re-use object's static type. */
type = NULL;
}
-
- do_cleanups (cleanup);
}
- CATCH (except, RETURN_MASK_ALL)
+ catch (const gdb_exception &except)
{
GDB_PY_HANDLE_EXCEPTION (except);
}
- END_CATCH
if (type == NULL)
obj->dynamic_type = valpy_get_type (self, NULL);
A lazy string is a pointer to a string with an optional encoding and
length. If ENCODING is not given, encoding is set to None. If an
ENCODING is provided the encoding parameter is set to ENCODING, but
- the string is not encoded. If LENGTH is provided then the length
- parameter is set to LENGTH, otherwise length will be set to -1 (first
- null of appropriate with). */
+ the string is not encoded.
+ If LENGTH is provided then the length parameter is set to LENGTH.
+ Otherwise if the value is an array of known length then the array's length
+ is used. Otherwise the length will be set to -1 (meaning first null of
+ appropriate with).
+
+ Note: In order to not break any existing uses this allows creating
+ lazy strings from anything. PR 20769. E.g.,
+ gdb.parse_and_eval("my_int_variable").lazy_string().
+ "It's easier to relax restrictions than it is to impose them after the
+ fact." So we should be flagging any unintended uses as errors, but it's
+ perhaps too late for that. */
+
static PyObject *
valpy_lazy_string (PyObject *self, PyObject *args, PyObject *kw)
{
gdb_py_longest length = -1;
struct value *value = ((value_object *) self)->value;
const char *user_encoding = NULL;
- static char *keywords[] = { "encoding", "length", NULL };
+ static const char *keywords[] = { "encoding", "length", NULL };
PyObject *str_obj = NULL;
- if (!PyArg_ParseTupleAndKeywords (args, kw, "|s" GDB_PY_LL_ARG, keywords,
- &user_encoding, &length))
+ if (!gdb_PyArg_ParseTupleAndKeywords (args, kw, "|s" GDB_PY_LL_ARG,
+ keywords, &user_encoding, &length))
return NULL;
- TRY
+ if (length < -1)
{
- struct cleanup *cleanup = make_cleanup_value_free_to_mark (value_mark ());
+ PyErr_SetString (PyExc_ValueError, _("Invalid length."));
+ return NULL;
+ }
- if (TYPE_CODE (value_type (value)) == TYPE_CODE_PTR)
- value = value_ind (value);
+ try
+ {
+ scoped_value_mark free_values;
+ struct type *type, *realtype;
+ CORE_ADDR addr;
+
+ type = value_type (value);
+ realtype = check_typedef (type);
- str_obj = gdbpy_create_lazy_string_object (value_address (value), length,
- user_encoding,
- value_type (value));
+ switch (TYPE_CODE (realtype))
+ {
+ case TYPE_CODE_ARRAY:
+ {
+ LONGEST array_length = -1;
+ LONGEST low_bound, high_bound;
+
+ /* PR 20786: There's no way to specify an array of length zero.
+ Record a length of [0,-1] which is how Ada does it. Anything
+ we do is broken, but this one possible solution. */
+ if (get_array_bounds (realtype, &low_bound, &high_bound))
+ array_length = high_bound - low_bound + 1;
+ if (length == -1)
+ length = array_length;
+ else if (array_length == -1)
+ {
+ type = lookup_array_range_type (TYPE_TARGET_TYPE (realtype),
+ 0, length - 1);
+ }
+ else if (length != array_length)
+ {
+ /* We need to create a new array type with the
+ specified length. */
+ if (length > array_length)
+ error (_("Length is larger than array size."));
+ type = lookup_array_range_type (TYPE_TARGET_TYPE (realtype),
+ low_bound,
+ low_bound + length - 1);
+ }
+ addr = value_address (value);
+ break;
+ }
+ case TYPE_CODE_PTR:
+ /* If a length is specified we defer creating an array of the
+ specified width until we need to. */
+ addr = value_as_address (value);
+ break;
+ default:
+ /* Should flag an error here. PR 20769. */
+ addr = value_address (value);
+ break;
+ }
- do_cleanups (cleanup);
+ str_obj = gdbpy_create_lazy_string_object (addr, length, user_encoding,
+ type);
}
- CATCH (except, RETURN_MASK_ALL)
+ catch (const gdb_exception &except)
{
GDB_PY_HANDLE_EXCEPTION (except);
}
- END_CATCH
return str_obj;
}
valpy_string (PyObject *self, PyObject *args, PyObject *kw)
{
int length = -1;
- gdb_byte *buffer;
+ gdb::unique_xmalloc_ptr<gdb_byte> buffer;
struct value *value = ((value_object *) self)->value;
- PyObject *unicode;
const char *encoding = NULL;
const char *errors = NULL;
const char *user_encoding = NULL;
const char *la_encoding = NULL;
struct type *char_type;
- static char *keywords[] = { "encoding", "errors", "length", NULL };
+ static const char *keywords[] = { "encoding", "errors", "length", NULL };
- if (!PyArg_ParseTupleAndKeywords (args, kw, "|ssi", keywords,
- &user_encoding, &errors, &length))
+ if (!gdb_PyArg_ParseTupleAndKeywords (args, kw, "|ssi", keywords,
+ &user_encoding, &errors, &length))
return NULL;
- TRY
+ try
{
LA_GET_STRING (value, &buffer, &length, &char_type, &la_encoding);
}
- CATCH (except, RETURN_MASK_ALL)
+ catch (const gdb_exception &except)
{
GDB_PY_HANDLE_EXCEPTION (except);
}
- END_CATCH
encoding = (user_encoding && *user_encoding) ? user_encoding : la_encoding;
- unicode = PyUnicode_Decode ((const char *) buffer,
- length * TYPE_LENGTH (char_type),
- encoding, errors);
- xfree (buffer);
+ return PyUnicode_Decode ((const char *) buffer.get (),
+ length * TYPE_LENGTH (char_type),
+ encoding, errors);
+}
+
+/* Given a Python object, copy its truth value to a C bool (the value
+ pointed by dest).
+ If src_obj is NULL, then *dest is not modified.
+
+ Return true in case of success (including src_obj being NULL), false
+ in case of error. */
+
+static bool
+copy_py_bool_obj (bool *dest, PyObject *src_obj)
+{
+ if (src_obj)
+ {
+ int cmp = PyObject_IsTrue (src_obj);
+ if (cmp < 0)
+ return false;
+ *dest = cmp;
+ }
+
+ return true;
+}
+
+/* Implementation of gdb.Value.format_string (...) -> string.
+ Return Unicode string with value contents formatted using the
+ keyword-only arguments. */
+
+static PyObject *
+valpy_format_string (PyObject *self, PyObject *args, PyObject *kw)
+{
+ static const char *keywords[] =
+ {
+ /* Basic C/C++ options. */
+ "raw", /* See the /r option to print. */
+ "pretty_arrays", /* See set print array on|off. */
+ "pretty_structs", /* See set print pretty on|off. */
+ "array_indexes", /* See set print array-indexes on|off. */
+ "symbols", /* See set print symbol on|off. */
+ "unions", /* See set print union on|off. */
+ /* C++ options. */
+ "deref_refs", /* No corresponding setting. */
+ "actual_objects", /* See set print object on|off. */
+ "static_members", /* See set print static-members on|off. */
+ /* C non-bool options. */
+ "max_elements", /* See set print elements N. */
+ "max_depth", /* See set print max-depth N. */
+ "repeat_threshold", /* See set print repeats. */
+ "format", /* The format passed to the print command. */
+ NULL
+ };
+
+ /* This function has too many arguments to be useful as positionals, so
+ the user should specify them all as keyword arguments.
+ Python 3.3 and later have a way to specify it (both in C and Python
+ itself), but we could be compiled with older versions, so we just
+ check that the args tuple is empty. */
+ Py_ssize_t positional_count = PyObject_Length (args);
+ if (positional_count < 0)
+ return NULL;
+ else if (positional_count > 0)
+ {
+ /* This matches the error message that Python 3.3 raises when
+ passing positionals to functions expecting keyword-only
+ arguments. */
+ PyErr_Format (PyExc_TypeError,
+ "format_string() takes 0 positional arguments but %zu were given",
+ positional_count);
+ return NULL;
+ }
+
+ struct value_print_options opts;
+ get_user_print_options (&opts);
+ opts.deref_ref = 0;
+
+ /* We need objects for booleans as the "p" flag for bools is new in
+ Python 3.3. */
+ PyObject *raw_obj = NULL;
+ PyObject *pretty_arrays_obj = NULL;
+ PyObject *pretty_structs_obj = NULL;
+ PyObject *array_indexes_obj = NULL;
+ PyObject *symbols_obj = NULL;
+ PyObject *unions_obj = NULL;
+ PyObject *deref_refs_obj = NULL;
+ PyObject *actual_objects_obj = NULL;
+ PyObject *static_members_obj = NULL;
+ char *format = NULL;
+ if (!gdb_PyArg_ParseTupleAndKeywords (args,
+ kw,
+ "|O!O!O!O!O!O!O!O!O!IIIs",
+ keywords,
+ &PyBool_Type, &raw_obj,
+ &PyBool_Type, &pretty_arrays_obj,
+ &PyBool_Type, &pretty_structs_obj,
+ &PyBool_Type, &array_indexes_obj,
+ &PyBool_Type, &symbols_obj,
+ &PyBool_Type, &unions_obj,
+ &PyBool_Type, &deref_refs_obj,
+ &PyBool_Type, &actual_objects_obj,
+ &PyBool_Type, &static_members_obj,
+ &opts.print_max,
+ &opts.max_depth,
+ &opts.repeat_count_threshold,
+ &format))
+ return NULL;
+
+ /* Set boolean arguments. */
+ if (!copy_py_bool_obj (&opts.raw, raw_obj))
+ return NULL;
+ if (!copy_py_bool_obj (&opts.prettyformat_arrays, pretty_arrays_obj))
+ return NULL;
+ if (!copy_py_bool_obj (&opts.prettyformat_structs, pretty_structs_obj))
+ return NULL;
+ if (!copy_py_bool_obj (&opts.print_array_indexes, array_indexes_obj))
+ return NULL;
+ if (!copy_py_bool_obj (&opts.symbol_print, symbols_obj))
+ return NULL;
+ if (!copy_py_bool_obj (&opts.unionprint, unions_obj))
+ return NULL;
+ if (!copy_py_bool_obj (&opts.deref_ref, deref_refs_obj))
+ return NULL;
+ if (!copy_py_bool_obj (&opts.objectprint, actual_objects_obj))
+ return NULL;
+ if (!copy_py_bool_obj (&opts.static_field_print, static_members_obj))
+ return NULL;
+
+ /* Numeric arguments for which 0 means unlimited (which we represent as
+ UINT_MAX). Note that the max-depth numeric argument uses -1 as
+ unlimited, and 0 is a valid choice. */
+ if (opts.print_max == 0)
+ opts.print_max = UINT_MAX;
+ if (opts.repeat_count_threshold == 0)
+ opts.repeat_count_threshold = UINT_MAX;
+
+ /* Other arguments. */
+ if (format != NULL)
+ {
+ if (strlen (format) == 1)
+ opts.format = format[0];
+ else
+ {
+ /* Mimic the message on standard Python ones for similar
+ errors. */
+ PyErr_SetString (PyExc_ValueError,
+ "a single character is required");
+ return NULL;
+ }
+ }
+
+ string_file stb;
+
+ try
+ {
+ common_val_print (((value_object *) self)->value, &stb, 0,
+ &opts, python_language);
+ }
+ catch (const gdb_exception &except)
+ {
+ GDB_PY_HANDLE_EXCEPTION (except);
+ }
- return unicode;
+ return PyUnicode_Decode (stb.c_str (), stb.size (), host_charset (), NULL);
}
/* A helper function that implements the various cast operators. */
return NULL;
}
- TRY
+ try
{
struct value *val = ((value_object *) self)->value;
struct value *res_val;
- struct cleanup *cleanup = make_cleanup_value_free_to_mark (value_mark ());
+ scoped_value_mark free_values;
if (op == UNOP_DYNAMIC_CAST)
res_val = value_dynamic_cast (type, val);
}
result = value_to_value_object (res_val);
- do_cleanups (cleanup);
}
- CATCH (except, RETURN_MASK_ALL)
+ catch (const gdb_exception &except)
{
GDB_PY_HANDLE_EXCEPTION (except);
}
- END_CATCH
return result;
}
{
struct type *parent_type, *val_type;
enum type_code type_code;
- gdbpy_ref type_object (PyObject_GetAttrString (field, "parent_type"));
+ gdbpy_ref<> type_object (PyObject_GetAttrString (field, "parent_type"));
int has_field = 0;
if (type_object == NULL)
return -1;
}
- TRY
+ try
{
val_type = value_type (v);
val_type = check_typedef (val_type);
- if (TYPE_CODE (val_type) == TYPE_CODE_REF
- || TYPE_CODE (val_type) == TYPE_CODE_PTR)
- val_type = check_typedef (TYPE_TARGET_TYPE (val_type));
+ if (TYPE_IS_REFERENCE (val_type) || TYPE_CODE (val_type) == TYPE_CODE_PTR)
+ val_type = check_typedef (TYPE_TARGET_TYPE (val_type));
type_code = TYPE_CODE (val_type);
if ((type_code == TYPE_CODE_STRUCT || type_code == TYPE_CODE_UNION)
else
has_field = 0;
}
- CATCH (except, RETURN_MASK_ALL)
+ catch (const gdb_exception &except)
{
GDB_PY_SET_HANDLE_EXCEPTION (except);
}
- END_CATCH
return has_field;
}
static int
get_field_flag (PyObject *field, const char *flag_name)
{
- gdbpy_ref flag_object (PyObject_GetAttrString (field, flag_name));
+ gdbpy_ref<> flag_object (PyObject_GetAttrString (field, flag_name));
if (flag_object == NULL)
return -1;
static struct type *
get_field_type (PyObject *field)
{
- gdbpy_ref ftype_obj (PyObject_GetAttrString (field, "type"));
+ gdbpy_ref<> ftype_obj (PyObject_GetAttrString (field, "type"));
struct type *ftype;
if (ftype_obj == NULL)
static PyObject *
valpy_getitem (PyObject *self, PyObject *key)
{
- struct gdb_exception except = exception_none;
+ struct gdb_exception except;
value_object *self_value = (value_object *) self;
gdb::unique_xmalloc_ptr<char> field;
struct type *base_class_type = NULL, *field_type = NULL;
}
else
{
- gdbpy_ref name_obj (PyObject_GetAttrString (key, "name"));
+ gdbpy_ref<> name_obj (PyObject_GetAttrString (key, "name"));
if (name_obj == NULL)
return NULL;
return NULL;
}
- gdbpy_ref bitpos_obj (PyObject_GetAttrString (key, "bitpos"));
+ gdbpy_ref<> bitpos_obj (PyObject_GetAttrString (key, "bitpos"));
if (bitpos_obj == NULL)
return NULL;
if (!gdb_py_int_as_long (bitpos_obj.get (), &bitpos))
}
}
- TRY
+ try
{
struct value *tmp = self_value->value;
- struct cleanup *cleanup = make_cleanup_value_free_to_mark (value_mark ());
struct value *res_val = NULL;
+ scoped_value_mark free_values;
if (field)
res_val = value_struct_elt (&tmp, NULL, field.get (), NULL,
if (TYPE_CODE (val_type) == TYPE_CODE_PTR)
res_val = value_cast (lookup_pointer_type (base_class_type), tmp);
else if (TYPE_CODE (val_type) == TYPE_CODE_REF)
- res_val = value_cast (lookup_reference_type (base_class_type), tmp);
+ res_val = value_cast (lookup_lvalue_reference_type (base_class_type),
+ tmp);
+ else if (TYPE_CODE (val_type) == TYPE_CODE_RVALUE_REF)
+ res_val = value_cast (lookup_rvalue_reference_type (base_class_type),
+ tmp);
else
res_val = value_cast (base_class_type, tmp);
}
if (res_val)
result = value_to_value_object (res_val);
- do_cleanups (cleanup);
}
- CATCH (ex, RETURN_MASK_ALL)
+ catch (gdb_exception &ex)
{
- except = ex;
+ except = std::move (ex);
}
- END_CATCH
GDB_PY_HANDLE_EXCEPTION (except);
struct value *function = ((value_object *) self)->value;
struct value **vargs = NULL;
struct type *ftype = NULL;
- struct value *mark = value_mark ();
PyObject *result = NULL;
- TRY
+ try
{
ftype = check_typedef (value_type (function));
}
- CATCH (except, RETURN_MASK_ALL)
+ catch (const gdb_exception &except)
{
GDB_PY_HANDLE_EXCEPTION (except);
}
- END_CATCH
if (TYPE_CODE (ftype) != TYPE_CODE_FUNC)
{
}
}
- TRY
+ try
{
- struct cleanup *cleanup = make_cleanup_value_free_to_mark (mark);
- struct value *return_value;
+ scoped_value_mark free_values;
- return_value = call_function_by_hand (function, args_count, vargs);
+ value *return_value
+ = call_function_by_hand (function, NULL,
+ gdb::make_array_view (vargs, args_count));
result = value_to_value_object (return_value);
- do_cleanups (cleanup);
}
- CATCH (except, RETURN_MASK_ALL)
+ catch (const gdb_exception &except)
{
GDB_PY_HANDLE_EXCEPTION (except);
}
- END_CATCH
return result;
}
static PyObject *
valpy_str (PyObject *self)
{
- std::string s;
- PyObject *result;
struct value_print_options opts;
get_user_print_options (&opts);
opts.deref_ref = 0;
- TRY
- {
- struct ui_file *stb = mem_fileopen ();
- struct cleanup *old_chain = make_cleanup_ui_file_delete (stb);
+ string_file stb;
- common_val_print (((value_object *) self)->value, stb, 0,
+ try
+ {
+ common_val_print (((value_object *) self)->value, &stb, 0,
&opts, python_language);
- s = ui_file_as_string (stb);
-
- do_cleanups (old_chain);
}
- CATCH (except, RETURN_MASK_ALL)
+ catch (const gdb_exception &except)
{
GDB_PY_HANDLE_EXCEPTION (except);
}
- END_CATCH
-
- result = PyUnicode_Decode (s.c_str (), s.length (), host_charset (), NULL);
- return result;
+ return PyUnicode_Decode (stb.c_str (), stb.size (), host_charset (), NULL);
}
/* Implements gdb.Value.is_optimized_out. */
struct value *value = ((value_object *) self)->value;
int opt = 0;
- TRY
+ try
{
opt = value_optimized_out (value);
}
- CATCH (except, RETURN_MASK_ALL)
+ catch (const gdb_exception &except)
{
GDB_PY_HANDLE_EXCEPTION (except);
}
- END_CATCH
if (opt)
Py_RETURN_TRUE;
struct value *value = ((value_object *) self)->value;
int opt = 0;
- TRY
+ try
{
opt = value_lazy (value);
}
- CATCH (except, RETURN_MASK_ALL)
+ catch (const gdb_exception &except)
{
GDB_PY_HANDLE_EXCEPTION (except);
}
- END_CATCH
if (opt)
Py_RETURN_TRUE;
{
struct value *value = ((value_object *) self)->value;
- TRY
+ try
{
if (value_lazy (value))
value_fetch_lazy (value);
}
- CATCH (except, RETURN_MASK_ALL)
+ catch (const gdb_exception &except)
{
GDB_PY_HANDLE_EXCEPTION (except);
}
- END_CATCH
Py_RETURN_NONE;
}
/* If TYPE is a reference, return the target; otherwise return TYPE. */
#define STRIP_REFERENCE(TYPE) \
- ((TYPE_CODE (TYPE) == TYPE_CODE_REF) ? (TYPE_TARGET_TYPE (TYPE)) : (TYPE))
+ (TYPE_IS_REFERENCE (TYPE) ? (TYPE_TARGET_TYPE (TYPE)) : (TYPE))
/* Helper for valpy_binop. Returns a value object which is the result
of applying the operation specified by OPCODE to the given
PyObject *result = NULL;
struct value *arg1, *arg2;
- struct cleanup *cleanup = make_cleanup_value_free_to_mark (value_mark ());
struct value *res_val = NULL;
enum exp_opcode op = OP_NULL;
int handled = 0;
+ scoped_value_mark free_values;
+
/* If the gdb.Value object is the second operand, then it will be
passed to us as the OTHER argument, and SELF will be an entirely
different kind of object, altogether. Because of this, we can't
python as well. */
arg1 = convert_value_from_python (self);
if (arg1 == NULL)
- {
- do_cleanups (cleanup);
- return NULL;
- }
+ return NULL;
arg2 = convert_value_from_python (other);
if (arg2 == NULL)
- {
- do_cleanups (cleanup);
- return NULL;
- }
+ return NULL;
switch (opcode)
{
if (res_val)
result = value_to_value_object (res_val);
- do_cleanups (cleanup);
return result;
}
{
PyObject *result = NULL;
- TRY
+ try
{
result = valpy_binop_throw (opcode, self, other);
}
- CATCH (except, RETURN_MASK_ALL)
+ catch (const gdb_exception &except)
{
GDB_PY_HANDLE_EXCEPTION (except);
}
- END_CATCH
return result;
}
{
PyObject *result = NULL;
- TRY
+ try
{
/* Perhaps overkill, but consistency has some virtue. */
- struct cleanup *cleanup = make_cleanup_value_free_to_mark (value_mark ());
+ scoped_value_mark free_values;
struct value *val;
val = value_neg (((value_object *) self)->value);
result = value_to_value_object (val);
- do_cleanups (cleanup);
}
- CATCH (except, RETURN_MASK_ALL)
+ catch (const gdb_exception &except)
{
GDB_PY_HANDLE_EXCEPTION (except);
}
- END_CATCH
return result;
}
struct value *value = ((value_object *) self)->value;
int isabs = 1;
- TRY
+ try
{
- struct cleanup *cleanup = make_cleanup_value_free_to_mark (value_mark ());
+ scoped_value_mark free_values;
if (value_less (value, value_zero (value_type (value), not_lval)))
isabs = 0;
-
- do_cleanups (cleanup);
}
- CATCH (except, RETURN_MASK_ALL)
+ catch (const gdb_exception &except)
{
GDB_PY_HANDLE_EXCEPTION (except);
}
- END_CATCH
if (isabs)
return valpy_positive (self);
static int
valpy_nonzero (PyObject *self)
{
- struct gdb_exception except = exception_none;
+ struct gdb_exception except;
value_object *self_value = (value_object *) self;
struct type *type;
int nonzero = 0; /* Appease GCC warning. */
- TRY
+ try
{
type = check_typedef (value_type (self_value->value));
if (is_integral_type (type) || TYPE_CODE (type) == TYPE_CODE_PTR)
nonzero = !!value_as_long (self_value->value);
- else if (TYPE_CODE (type) == TYPE_CODE_FLT)
- nonzero = value_as_double (self_value->value) != 0;
- else if (TYPE_CODE (type) == TYPE_CODE_DECFLOAT)
- nonzero = !decimal_is_zero (value_contents (self_value->value),
- TYPE_LENGTH (type),
- gdbarch_byte_order (get_type_arch (type)));
+ else if (is_floating_value (self_value->value))
+ nonzero = !target_float_is_zero (value_contents (self_value->value),
+ type);
else
/* All other values are True. */
nonzero = 1;
}
- CATCH (ex, RETURN_MASK_ALL)
+ catch (gdb_exception &ex)
{
- except = ex;
+ except = std::move (ex);
}
- END_CATCH
/* This is not documented in the Python documentation, but if this
function fails, return -1 as slot_nb_nonzero does (the default
{
struct value *val = NULL;
- TRY
+ try
{
val = value_complement (((value_object *) self)->value);
}
- CATCH (except, RETURN_MASK_ALL)
+ catch (const gdb_exception &except)
{
GDB_PY_HANDLE_EXCEPTION (except);
}
- END_CATCH
return value_to_value_object (val);
}
int result;
struct value *value_other;
struct value *value_self;
- struct value *mark = value_mark ();
- struct cleanup *cleanup;
+
+ scoped_value_mark free_values;
value_other = convert_value_from_python (other);
if (value_other == NULL)
return -1;
- cleanup = make_cleanup_value_free_to_mark (mark);
-
value_self = ((value_object *) self)->value;
switch (op)
break;
}
- do_cleanups (cleanup);
return result;
}
return NULL;
}
- TRY
+ try
{
result = valpy_richcompare_throw (self, other, op);
}
- CATCH (except, RETURN_MASK_ALL)
+ catch (const gdb_exception &except)
{
GDB_PY_HANDLE_EXCEPTION (except);
}
- END_CATCH
/* In this case, the Python exception has already been set. */
if (result < 0)
struct type *type = value_type (value);
LONGEST l = 0;
- TRY
+ try
{
- if (!is_integral_type (type))
+ if (is_floating_value (value))
+ {
+ type = builtin_type_pylong;
+ value = value_cast (type, value);
+ }
+
+ if (!is_integral_type (type)
+ && TYPE_CODE (type) != TYPE_CODE_PTR)
error (_("Cannot convert value to int."));
l = value_as_long (value);
}
- CATCH (except, RETURN_MASK_ALL)
+ catch (const gdb_exception &except)
{
GDB_PY_HANDLE_EXCEPTION (except);
}
- END_CATCH
- return gdb_py_object_from_longest (l);
+ if (TYPE_UNSIGNED (type))
+ return gdb_py_object_from_ulongest (l).release ();
+ else
+ return gdb_py_object_from_longest (l).release ();
}
#endif
struct type *type = value_type (value);
LONGEST l = 0;
- TRY
+ try
{
+ if (is_floating_value (value))
+ {
+ type = builtin_type_pylong;
+ value = value_cast (type, value);
+ }
+
type = check_typedef (type);
if (!is_integral_type (type)
l = value_as_long (value);
}
- CATCH (except, RETURN_MASK_ALL)
+ catch (const gdb_exception &except)
{
GDB_PY_HANDLE_EXCEPTION (except);
}
- END_CATCH
if (TYPE_UNSIGNED (type))
return gdb_py_long_from_ulongest (l);
struct type *type = value_type (value);
double d = 0;
- TRY
+ try
{
type = check_typedef (type);
- if (TYPE_CODE (type) != TYPE_CODE_FLT)
+ if (TYPE_CODE (type) == TYPE_CODE_FLT && is_floating_value (value))
+ d = target_float_to_host_double (value_contents (value), type);
+ else if (TYPE_CODE (type) == TYPE_CODE_INT)
+ {
+ /* Note that valpy_long accepts TYPE_CODE_PTR and some
+ others here here -- but casting a pointer or bool to a
+ float seems wrong. */
+ d = value_as_long (value);
+ }
+ else
error (_("Cannot convert value to float."));
-
- d = value_as_double (value);
}
- CATCH (except, RETURN_MASK_ALL)
+ catch (const gdb_exception &except)
{
GDB_PY_HANDLE_EXCEPTION (except);
}
- END_CATCH
return PyFloat_FromDouble (d);
}
val_obj = PyObject_New (value_object, &value_object_type);
if (val_obj != NULL)
{
- val_obj->value = val;
- release_value_or_incref (val);
+ val_obj->value = release_value (val).release ();
val_obj->address = NULL;
val_obj->type = NULL;
val_obj->dynamic_type = NULL;
gdb_assert (obj != NULL);
- TRY
+ try
{
if (PyBool_Check (obj))
{
ULONGEST instead. */
if (PyErr_ExceptionMatches (PyExc_OverflowError))
{
- PyObject *etype, *evalue, *etraceback;
-
- PyErr_Fetch (&etype, &evalue, &etraceback);
- gdbpy_ref zero (PyInt_FromLong (0));
+ gdbpy_err_fetch fetched_error;
+ gdbpy_ref<> zero (PyInt_FromLong (0));
/* Check whether obj is positive. */
if (PyObject_RichCompareBool (obj, zero.get (), Py_GT) > 0)
value = value_from_ulongest (builtin_type_upylong, ul);
}
else
- /* There's nothing we can do. */
- PyErr_Restore (etype, evalue, etraceback);
+ {
+ /* There's nothing we can do. */
+ fetched_error.restore ();
+ }
}
}
else
double d = PyFloat_AsDouble (obj);
if (! PyErr_Occurred ())
- value = value_from_double (builtin_type_pyfloat, d);
+ value = value_from_host_double (builtin_type_pyfloat, d);
}
else if (gdbpy_is_string (obj))
{
PyString_AsString (PyObject_Str (obj)));
#endif
}
- CATCH (except, RETURN_MASK_ALL)
+ catch (const gdb_exception &except)
{
- PyErr_Format (except.reason == RETURN_QUIT
- ? PyExc_KeyboardInterrupt : PyExc_RuntimeError,
- "%s", except.message);
+ gdbpy_convert_exception (except);
return NULL;
}
- END_CATCH
return value;
}
if (!PyArg_ParseTuple (args, "i", &i))
return NULL;
- TRY
+ try
{
res_val = access_value_history (i);
}
- CATCH (except, RETURN_MASK_ALL)
+ catch (const gdb_exception &except)
{
GDB_PY_HANDLE_EXCEPTION (except);
}
- END_CATCH
return value_to_value_object (res_val);
}
+/* Return the value of a convenience variable. */
+PyObject *
+gdbpy_convenience_variable (PyObject *self, PyObject *args)
+{
+ const char *varname;
+ struct value *res_val = NULL;
+
+ if (!PyArg_ParseTuple (args, "s", &varname))
+ return NULL;
+
+ try
+ {
+ struct internalvar *var = lookup_only_internalvar (varname);
+
+ if (var != NULL)
+ {
+ res_val = value_of_internalvar (python_gdbarch, var);
+ if (TYPE_CODE (value_type (res_val)) == TYPE_CODE_VOID)
+ res_val = NULL;
+ }
+ }
+ catch (const gdb_exception &except)
+ {
+ GDB_PY_HANDLE_EXCEPTION (except);
+ }
+
+ if (res_val == NULL)
+ Py_RETURN_NONE;
+
+ return value_to_value_object (res_val);
+}
+
+/* Set the value of a convenience variable. */
+PyObject *
+gdbpy_set_convenience_variable (PyObject *self, PyObject *args)
+{
+ const char *varname;
+ PyObject *value_obj;
+ struct value *value = NULL;
+
+ if (!PyArg_ParseTuple (args, "sO", &varname, &value_obj))
+ return NULL;
+
+ /* None means to clear the variable. */
+ if (value_obj != Py_None)
+ {
+ value = convert_value_from_python (value_obj);
+ if (value == NULL)
+ return NULL;
+ }
+
+ try
+ {
+ if (value == NULL)
+ {
+ struct internalvar *var = lookup_only_internalvar (varname);
+
+ if (var != NULL)
+ clear_internalvar (var);
+ }
+ else
+ {
+ struct internalvar *var = lookup_internalvar (varname);
+
+ set_internalvar (var, value);
+ }
+ }
+ catch (const gdb_exception &except)
+ {
+ GDB_PY_HANDLE_EXCEPTION (except);
+ }
+
+ Py_RETURN_NONE;
+}
+
/* Returns 1 in OBJ is a gdb.Value object, 0 otherwise. */
int
\f
-static PyGetSetDef value_object_getset[] = {
+static gdb_PyGetSetDef value_object_getset[] = {
{ "address", valpy_get_address, NULL, "The address of the value.",
NULL },
{ "is_optimized_out", valpy_get_is_optimized_out, NULL,
{ "dereference", valpy_dereference, METH_NOARGS, "Dereferences the value." },
{ "referenced_value", valpy_referenced_value, METH_NOARGS,
"Return the value referenced by a TYPE_CODE_REF or TYPE_CODE_PTR value." },
- { "reference_value", valpy_reference_value, METH_NOARGS,
+ { "reference_value", valpy_lvalue_reference_value, METH_NOARGS,
"Return a value of type TYPE_CODE_REF referencing this value." },
+ { "rvalue_reference_value", valpy_rvalue_reference_value, METH_NOARGS,
+ "Return a value of type TYPE_CODE_RVALUE_REF referencing this value." },
{ "const_value", valpy_const_value, METH_NOARGS,
"Return a 'const' qualied version of the same value." },
{ "lazy_string", (PyCFunction) valpy_lazy_string,
Return Unicode string representation of the value." },
{ "fetch_lazy", valpy_fetch_lazy, METH_NOARGS,
"Fetches the value from the inferior, if it was lazy." },
+ { "format_string", (PyCFunction) valpy_format_string,
+ METH_VARARGS | METH_KEYWORDS,
+ "format_string (...) -> string\n\
+Return a string representation of the value using the specified\n\
+formatting options" },
{NULL} /* Sentinel */
};
valpy_divide, /* nb_true_divide */
NULL, /* nb_inplace_floor_divide */
NULL, /* nb_inplace_true_divide */
-#ifndef HAVE_LIBPYTHON2_4
- /* This was added in Python 2.5. */
valpy_long, /* nb_index */
-#endif /* HAVE_LIBPYTHON2_4 */
};
static PyMappingMethods value_object_as_mapping = {
projects / deliverable / binutils-gdb.git / blobdiff