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| author | Tom Tromey <tromey@adacore.com> | 2023-09-07 13:40:29 -0600 |
|---|---|---|
| committer | Tom Tromey <tromey@adacore.com> | 2023-09-26 09:29:14 -0600 |
| commit | fb282576998ca7ce70526dea42d41a7f418879c9 (patch) | |
| tree | 9614218e6679bdfb2c28f2962ac16b16ea8f06a2 /gdb/python/py-prettyprint.c | |
| parent | 854f72b36dc72dc23b24563c5e7f43efc373b712 (diff) | |
| download | binutils-fb282576998ca7ce70526dea42d41a7f418879c9.zip binutils-fb282576998ca7ce70526dea42d41a7f418879c9.tar.gz binutils-fb282576998ca7ce70526dea42d41a7f418879c9.tar.bz2 | |
Introduce gdb.ValuePrinter
There was an earlier thread about adding new methods to
pretty-printers:
https://sourceware.org/pipermail/gdb-patches/2023-June/200503.html
We've known about the need for printer extensibility for a while, but
have been hampered by backward-compatibilty concerns: gdb never
documented that printers might acquire new methods, and so existing
printers may have attribute name clashes.
To solve this problem, this patch adds a new pretty-printer tag class
that signals to gdb that the printer follows new extensibility rules.
Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=30816
Reviewed-By: Eli Zaretskii <eliz@gnu.org>
Diffstat (limited to 'gdb/python/py-prettyprint.c')
| -rw-r--r-- | gdb/python/py-prettyprint.c | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/gdb/python/py-prettyprint.c b/gdb/python/py-prettyprint.c index cccc94e..7a43d9d 100644 --- a/gdb/python/py-prettyprint.c +++ b/gdb/python/py-prettyprint.c @@ -27,6 +27,8 @@ #include "python-internal.h" #include "cli/cli-style.h" +extern PyTypeObject printer_object_type; + /* Return type of print_string_repr. */ enum gdbpy_string_repr_result @@ -779,3 +781,66 @@ gdbpy_get_print_options (value_print_options *opts) else get_user_print_options (opts); } + +/* A ValuePrinter is just a "tag", so it has no state other than that + required by Python. */ +struct printer_object +{ + PyObject_HEAD +}; + +/* The ValuePrinter type object. */ +PyTypeObject printer_object_type = +{ + PyVarObject_HEAD_INIT (NULL, 0) + "gdb.ValuePrinter", /*tp_name*/ + sizeof (printer_object), /*tp_basicsize*/ + 0, /*tp_itemsize*/ + 0, /*tp_dealloc*/ + 0, /*tp_print*/ + 0, /*tp_getattr*/ + 0, /*tp_setattr*/ + 0, /*tp_compare*/ + 0, /*tp_repr*/ + 0, /*tp_as_number*/ + 0, /*tp_as_sequence*/ + 0, /*tp_as_mapping*/ + 0, /*tp_hash*/ + 0, /*tp_call*/ + 0, /*tp_str*/ + 0, /*tp_getattro*/ + 0, /*tp_setattro*/ + 0, /*tp_as_buffer*/ + Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE, /*tp_flags*/ + "GDB value printer object", /* tp_doc */ + 0, /* tp_traverse */ + 0, /* tp_clear */ + 0, /* tp_richcompare */ + 0, /* tp_weaklistoffset */ + 0, /* tp_iter */ + 0, /* tp_iternext */ + 0, /* tp_methods */ + 0, /* tp_members */ + 0, /* tp_getset */ + 0, /* tp_base */ + 0, /* tp_dict */ + 0, /* tp_descr_get */ + 0, /* tp_descr_set */ + 0, /* tp_dictoffset */ + 0, /* tp_init */ + 0, /* tp_alloc */ + PyType_GenericNew, /* tp_new */ +}; + +/* Set up the ValuePrinter type. */ + +static int +gdbpy_initialize_prettyprint () +{ + if (PyType_Ready (&printer_object_type) < 0) + return -1; + return gdb_pymodule_addobject (gdb_module, "ValuePrinter", + (PyObject *) &printer_object_type); +} + +GDBPY_INITIALIZE_FILE (gdbpy_initialize_prettyprint); |