1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
|
# Copyright 2022, 2023 Free Software Foundation, Inc.
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import gdb
import gdb.printing
from .frames import frame_for_id
from .server import request
from .startup import send_gdb_with_response, in_gdb_thread
from .varref import find_variable, VariableReference
class EvaluateResult(VariableReference):
def __init__(self, value):
super().__init__(None, value, "result")
# Helper function to evaluate an expression in a certain frame.
@in_gdb_thread
def _evaluate(expr, frame_id):
if frame_id is not None:
frame = frame_for_id(frame_id)
frame.select()
val = gdb.parse_and_eval(expr)
ref = EvaluateResult(val)
return ref.to_object()
# Helper function to evaluate a gdb command in a certain frame.
@in_gdb_thread
def _repl(command, frame_id):
if frame_id is not None:
frame = frame_for_id(frame_id)
frame.select()
val = gdb.execute(command, from_tty=True, to_string=True)
return {
"result": val,
"variablesReference": 0,
}
# FIXME 'format' & hex
# FIXME supportsVariableType handling
@request("evaluate")
def eval_request(*, expression, frameId=None, context="variables", **args):
if context in ("watch", "variables"):
# These seem to be expression-like.
return send_gdb_with_response(lambda: _evaluate(expression, frameId))
elif context == "repl":
return send_gdb_with_response(lambda: _repl(expression, frameId))
else:
raise Exception(f'unknown evaluate context "{context}"')
@in_gdb_thread
def _variables(ref, start, count):
var = find_variable(ref)
children = var.fetch_children(start, count)
return [x.to_object() for x in children]
@request("variables")
# Note that we ignore the 'filter' field. That seems to be
# specific to javascript.
# FIXME: implement format
def variables(*, variablesReference, start=0, count=0, **args):
result = send_gdb_with_response(
lambda: _variables(variablesReference, start, count)
)
return {"variables": result}
|
