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[binutils-gdb] Use gdbpy_ref in py-type.c
- From: Tom Tromey <tromey at sourceware dot org>
- To: gdb-cvs at sourceware dot org
- Date: 11 Jan 2017 05:17:46 -0000
- Subject: [binutils-gdb] Use gdbpy_ref in py-type.c
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=3bb4338431288002c2225ff660e1500818684c16
commit 3bb4338431288002c2225ff660e1500818684c16
Author: Tom Tromey <tom@tromey.com>
Date: Sun Nov 6 20:59:51 2016 -0700
Use gdbpy_ref in py-type.c
This changes py-type.c to use gdbpy_ref.
This results in simpler logic and the removal of "goto"s.
2017-01-10 Tom Tromey <tom@tromey.com>
* python/py-type.c (convert_field, make_fielditem, typy_fields)
(typy_range): Use gdbpy_ref.
Diff:
---
gdb/ChangeLog | 5 ++
gdb/python/py-type.c | 195 +++++++++++++++++++++------------------------------
2 files changed, 83 insertions(+), 117 deletions(-)
diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 509ce9e..1fa7915 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,5 +1,10 @@
2017-01-10 Tom Tromey <tom@tromey.com>
+ * python/py-type.c (convert_field, make_fielditem, typy_fields)
+ (typy_range): Use gdbpy_ref.
+
+2017-01-10 Tom Tromey <tom@tromey.com>
+
* python/py-threadevent.c (create_thread_event_object): Use
gdbpy_ref.
* python/py-stopevent.c (create_stop_event_object): Simplify.
diff --git a/gdb/python/py-type.c b/gdb/python/py-type.c
index af6ea66..3a8ac35 100644
--- a/gdb/python/py-type.c
+++ b/gdb/python/py-type.c
@@ -28,6 +28,7 @@
#include "language.h"
#include "vec.h"
#include "typeprint.h"
+#include "py-ref.h"
typedef struct pyty_type_object
{
@@ -168,18 +169,16 @@ typy_get_code (PyObject *self, void *closure)
static PyObject *
convert_field (struct type *type, int field)
{
- PyObject *result = field_new ();
- PyObject *arg;
+ gdbpy_ref result (field_new ());
- if (!result)
+ if (result == NULL)
return NULL;
- arg = type_to_type_object (type);
+ gdbpy_ref arg (type_to_type_object (type));
if (arg == NULL)
- goto fail;
- if (PyObject_SetAttrString (result, "parent_type", arg) < 0)
- goto failarg;
- Py_DECREF (arg);
+ return NULL;
+ if (PyObject_SetAttrString (result.get (), "parent_type", arg.get ()) < 0)
+ return NULL;
if (!field_is_static (&TYPE_FIELD (type, field)))
{
@@ -187,88 +186,79 @@ convert_field (struct type *type, int field)
if (TYPE_CODE (type) == TYPE_CODE_ENUM)
{
- arg = gdb_py_long_from_longest (TYPE_FIELD_ENUMVAL (type, field));
+ arg.reset (gdb_py_long_from_longest (TYPE_FIELD_ENUMVAL (type,
+ field)));
attrstring = "enumval";
}
else
{
- arg = gdb_py_long_from_longest (TYPE_FIELD_BITPOS (type, field));
+ arg.reset (gdb_py_long_from_longest (TYPE_FIELD_BITPOS (type,
+ field)));
attrstring = "bitpos";
}
- if (!arg)
- goto fail;
+ if (arg == NULL)
+ return NULL;
/* At least python-2.4 had the second parameter non-const. */
- if (PyObject_SetAttrString (result, (char *) attrstring, arg) < 0)
- goto failarg;
- Py_DECREF (arg);
+ if (PyObject_SetAttrString (result.get (), (char *) attrstring,
+ arg.get ()) < 0)
+ return NULL;
}
- arg = NULL;
+ arg.reset (NULL);
if (TYPE_FIELD_NAME (type, field))
{
const char *field_name = TYPE_FIELD_NAME (type, field);
if (field_name[0] != '\0')
{
- arg = PyString_FromString (TYPE_FIELD_NAME (type, field));
+ arg.reset (PyString_FromString (TYPE_FIELD_NAME (type, field)));
if (arg == NULL)
- goto fail;
+ return NULL;
}
}
if (arg == NULL)
{
- arg = Py_None;
- Py_INCREF (arg);
+ arg.reset (Py_None);
+ Py_INCREF (arg.get ());
}
- if (PyObject_SetAttrString (result, "name", arg) < 0)
- goto failarg;
- Py_DECREF (arg);
+ if (PyObject_SetAttrString (result.get (), "name", arg.get ()) < 0)
+ return NULL;
- arg = TYPE_FIELD_ARTIFICIAL (type, field) ? Py_True : Py_False;
- Py_INCREF (arg);
- if (PyObject_SetAttrString (result, "artificial", arg) < 0)
- goto failarg;
- Py_DECREF (arg);
+ arg.reset (TYPE_FIELD_ARTIFICIAL (type, field) ? Py_True : Py_False);
+ Py_INCREF (arg.get ());
+ if (PyObject_SetAttrString (result.get (), "artificial", arg.get ()) < 0)
+ return NULL;
if (TYPE_CODE (type) == TYPE_CODE_STRUCT)
- arg = field < TYPE_N_BASECLASSES (type) ? Py_True : Py_False;
+ arg.reset (field < TYPE_N_BASECLASSES (type) ? Py_True : Py_False);
else
- arg = Py_False;
- Py_INCREF (arg);
- if (PyObject_SetAttrString (result, "is_base_class", arg) < 0)
- goto failarg;
- Py_DECREF (arg);
-
- arg = PyLong_FromLong (TYPE_FIELD_BITSIZE (type, field));
- if (!arg)
- goto fail;
- if (PyObject_SetAttrString (result, "bitsize", arg) < 0)
- goto failarg;
- Py_DECREF (arg);
+ arg.reset (Py_False);
+ Py_INCREF (arg.get ());
+ if (PyObject_SetAttrString (result.get (), "is_base_class", arg.get ()) < 0)
+ return NULL;
+
+ arg.reset (PyLong_FromLong (TYPE_FIELD_BITSIZE (type, field)));
+ if (arg == NULL)
+ return NULL;
+ if (PyObject_SetAttrString (result.get (), "bitsize", arg.get ()) < 0)
+ return NULL;
/* A field can have a NULL type in some situations. */
if (TYPE_FIELD_TYPE (type, field) == NULL)
{
- arg = Py_None;
- Py_INCREF (arg);
+ arg.reset (Py_None);
+ Py_INCREF (arg.get ());
}
else
- arg = type_to_type_object (TYPE_FIELD_TYPE (type, field));
- if (!arg)
- goto fail;
- if (PyObject_SetAttrString (result, "type", arg) < 0)
- goto failarg;
- Py_DECREF (arg);
-
- return result;
+ arg.reset (type_to_type_object (TYPE_FIELD_TYPE (type, field)));
+ if (arg == NULL)
+ return NULL;
+ if (PyObject_SetAttrString (result.get (), "type", arg.get ()) < 0)
+ return NULL;
- failarg:
- Py_DECREF (arg);
- fail:
- Py_DECREF (result);
- return NULL;
+ return result.release ();
}
/* Helper function to return the name of a field, as a gdb.Field object.
@@ -298,39 +288,29 @@ field_name (struct type *type, int field)
static PyObject *
make_fielditem (struct type *type, int i, enum gdbpy_iter_kind kind)
{
- PyObject *item = NULL, *key = NULL, *value = NULL;
-
switch (kind)
{
case iter_items:
- key = field_name (type, i);
- if (key == NULL)
- goto fail;
- value = convert_field (type, i);
- if (value == NULL)
- goto fail;
- item = PyTuple_New (2);
- if (item == NULL)
- goto fail;
- PyTuple_SET_ITEM (item, 0, key);
- PyTuple_SET_ITEM (item, 1, value);
- break;
+ {
+ gdbpy_ref key (field_name (type, i));
+ if (key == NULL)
+ return NULL;
+ gdbpy_ref value (convert_field (type, i));
+ if (value == NULL)
+ return NULL;
+ gdbpy_ref item (PyTuple_New (2));
+ if (item == NULL)
+ return NULL;
+ PyTuple_SET_ITEM (item.get (), 0, key.release ());
+ PyTuple_SET_ITEM (item.get (), 1, value.release ());
+ return item.release ();
+ }
case iter_keys:
- item = field_name (type, i);
- break;
+ return field_name (type, i);
case iter_values:
- item = convert_field (type, i);
- break;
- default:
- gdb_assert_not_reached ("invalid gdbpy_iter_kind");
+ return convert_field (type, i);
}
- return item;
-
- fail:
- Py_XDECREF (key);
- Py_XDECREF (value);
- Py_XDECREF (item);
- return NULL;
+ gdb_assert_not_reached ("invalid gdbpy_iter_kind");
}
/* Return a sequence of all field names, fields, or (name, field) pairs.
@@ -389,7 +369,6 @@ static PyObject *
typy_fields (PyObject *self, PyObject *args)
{
struct type *type = ((type_object *) self)->type;
- PyObject *r, *rl;
if (TYPE_CODE (type) != TYPE_CODE_ARRAY)
return typy_fields_items (self, iter_values);
@@ -397,14 +376,11 @@ typy_fields (PyObject *self, PyObject *args)
/* Array type. Handle this as a special case because the common
machinery wants struct or union or enum types. Build a list of
one entry which is the range for the array. */
- r = convert_field (type, 0);
+ gdbpy_ref r (convert_field (type, 0));
if (r == NULL)
return NULL;
- rl = Py_BuildValue ("[O]", r);
- Py_DECREF (r);
-
- return rl;
+ return Py_BuildValue ("[O]", r.get ());
}
/* Return a sequence of all field names. Each field is a gdb.Field object. */
@@ -601,8 +577,6 @@ static PyObject *
typy_range (PyObject *self, PyObject *args)
{
struct type *type = ((type_object *) self)->type;
- PyObject *result;
- PyObject *low_bound = NULL, *high_bound = NULL;
/* Initialize these to appease GCC warnings. */
LONGEST low = 0, high = 0;
@@ -628,35 +602,22 @@ typy_range (PyObject *self, PyObject *args)
break;
}
- low_bound = PyLong_FromLong (low);
- if (!low_bound)
- goto failarg;
-
- high_bound = PyLong_FromLong (high);
- if (!high_bound)
- goto failarg;
+ gdbpy_ref low_bound (PyLong_FromLong (low));
+ if (low_bound == NULL)
+ return NULL;
- result = PyTuple_New (2);
- if (!result)
- goto failarg;
+ gdbpy_ref high_bound (PyLong_FromLong (high));
+ if (high_bound == NULL)
+ return NULL;
- if (PyTuple_SetItem (result, 0, low_bound) != 0)
- {
- Py_DECREF (result);
- goto failarg;
- }
- if (PyTuple_SetItem (result, 1, high_bound) != 0)
- {
- Py_DECREF (high_bound);
- Py_DECREF (result);
- return NULL;
- }
- return result;
+ gdbpy_ref result (PyTuple_New (2));
+ if (result == NULL)
+ return NULL;
- failarg:
- Py_XDECREF (high_bound);
- Py_XDECREF (low_bound);
- return NULL;
+ if (PyTuple_SetItem (result.get (), 0, low_bound.release ()) != 0
+ || PyTuple_SetItem (result.get (), 1, high_bound.release ()) != 0)
+ return NULL;
+ return result.release ();
}
/* Return a Type object which represents a reference to SELF. */