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| -rw-r--r-- | gdb/ChangeLog | 5 | ||||
| -rw-r--r-- | gdb/doc/ChangeLog | 4 | ||||
| -rw-r--r-- | gdb/doc/gdb.texinfo | 13 | ||||
| -rw-r--r-- | gdb/python/python.c | 25 | ||||
| -rw-r--r-- | gdb/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gdb/testsuite/gdb.python/py-value.exp | 12 |
6 files changed, 64 insertions, 0 deletions
diff --git a/gdb/ChangeLog b/gdb/ChangeLog index a36834e..70da313 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,3 +1,8 @@ +2009-12-03 Tom Tromey <tromey@redhat.com> + + * python/python.c (gdbpy_parse_and_eval): New function. + (GdbMethods): Add "parse_and_eval". + 2009-12-03 Jan Kratochvil <jan.kratochvil@redhat.com> * linux-thread-db.c (find_new_threads_once): Change errp and err types diff --git a/gdb/doc/ChangeLog b/gdb/doc/ChangeLog index 73a640d..553abae 100644 --- a/gdb/doc/ChangeLog +++ b/gdb/doc/ChangeLog @@ -1,3 +1,7 @@ +2009-12-03 Tom Tromey <tromey@redhat.com> + + * gdb.texinfo (Basic Python): Document gdb.parse_and_eval. + 2009-12-02 Paul Pluzhnikov <ppluzhnikov@google.com> * observer.texi: New memory_changed observer. diff --git a/gdb/doc/gdb.texinfo b/gdb/doc/gdb.texinfo index 39107ec..8cdab8f 100644 --- a/gdb/doc/gdb.texinfo +++ b/gdb/doc/gdb.texinfo @@ -19328,6 +19328,19 @@ If no exception is raised, the return value is always an instance of @code{gdb.Value} (@pxref{Values From Inferior}). @end defun +@findex gdb.parse_and_eval +@defun parse_and_eval expression +Parse @var{expression} as an expression in the current language, +evaluate it, and return the result as a @code{gdb.Value}. +@var{expression} must be a string. + +This function can be useful when implementing a new command +(@pxref{Commands In Python}), as it provides a way to parse the +command's argument as an expression. It is also useful simply to +compute values, for example, it is the only way to get the value of a +convenience variable (@pxref{Convenience Vars}) as a @code{gdb.Value}. +@end defun + @findex gdb.write @defun write string Print a string to @value{GDBN}'s paginated standard output stream. diff --git a/gdb/python/python.c b/gdb/python/python.c index 77a0069..23e94a5 100644 --- a/gdb/python/python.c +++ b/gdb/python/python.c @@ -323,6 +323,26 @@ execute_gdb_command (PyObject *self, PyObject *args) Py_RETURN_NONE; } +/* Parse a string and evaluate it as an expression. */ +static PyObject * +gdbpy_parse_and_eval (PyObject *self, PyObject *args) +{ + char *expr_str; + struct value *result = NULL; + volatile struct gdb_exception except; + + if (!PyArg_ParseTuple (args, "s", &expr_str)) + return NULL; + + TRY_CATCH (except, RETURN_MASK_ALL) + { + result = parse_and_eval (expr_str); + } + GDB_PY_HANDLE_EXCEPTION (except); + + return value_to_value_object (result); +} + /* Printing. */ @@ -680,6 +700,11 @@ Return a string explaining unwind stop reason." }, "lookup_type (name [, block]) -> type\n\ Return a Type corresponding to the given name." }, + { "parse_and_eval", gdbpy_parse_and_eval, METH_VARARGS, + "parse_and_eval (String) -> Value.\n\ +Parse String as an expression, evaluate it, and return the result as a Value." + }, + { "write", gdbpy_write, METH_VARARGS, "Write a string using gdb's filtered stream." }, { "flush", gdbpy_flush, METH_NOARGS, diff --git a/gdb/testsuite/ChangeLog b/gdb/testsuite/ChangeLog index 9c95f3f..4ad760e 100644 --- a/gdb/testsuite/ChangeLog +++ b/gdb/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2009-12-03 Tom Tromey <tromey@redhat.com> + + * gdb.python/py-value.exp (test_parse_and_eval): New + function. + 2009-12-03 Paul Pluzhnikov <ppluzhnikov@google.com> PR gdb/11022 diff --git a/gdb/testsuite/gdb.python/py-value.exp b/gdb/testsuite/gdb.python/py-value.exp index 2958233..01f6023 100644 --- a/gdb/testsuite/gdb.python/py-value.exp +++ b/gdb/testsuite/gdb.python/py-value.exp @@ -361,6 +361,17 @@ proc test_subscript_regression {lang} { gdb_test "python print marray\[1\]\[2\]" "o." "Test multiple subscript" } +# A few tests of gdb.parse_and_eval. +proc test_parse_and_eval {} { + gdb_test "python print gdb.parse_and_eval ('23')" "23" \ + "parse_and_eval constant test" + gdb_test "python print gdb.parse_and_eval ('5 + 7')" "12" \ + "parse_and_eval simple expression test" + gdb_test "python print type(gdb.parse_and_eval ('5 + 7'))" \ + ".type 'gdb.Value'."\ + "parse_and_eval type test" +} + # Start with a fresh gdb. gdb_exit @@ -381,6 +392,7 @@ test_value_numeric_ops test_value_boolean test_value_compare test_objfiles +test_parse_and_eval # The following tests require execution. |