Current File : //usr/share/gdb/python/gdb/dap/sources.py
# Copyright 2023-2024 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 os
import gdb
from .server import capability, request
from .startup import DAPException, in_gdb_thread
# The next available source reference ID. Must be greater than 0.
_next_source = 1
# Map from full paths to Source dictionaries.
_source_map = {}
# Map from a source reference ID back to the same Source that is
# stored in _source_map.
_id_map = {}
@in_gdb_thread
def make_source(fullname, filename):
"""Return the Source for a given file name.
FULLNAME is the full name. This is used as the key.
FILENAME is the base name.
"""
global _source_map
if fullname in _source_map:
result = _source_map[fullname]
else:
result = {
"name": filename,
"path": fullname,
}
if not os.path.exists(fullname):
global _next_source
result["sourceReference"] = _next_source
global _id_map
_id_map[_next_source] = result
_next_source += 1
_source_map[fullname] = result
return result
@in_gdb_thread
def decode_source(source):
"""Decode a Source object.
Finds and returns the filename of a given Source object."""
if "path" in source:
return source["path"]
if "sourceReference" not in source:
raise DAPException("either 'path' or 'sourceReference' must appear in Source")
ref = source["sourceReference"]
global _id_map
if ref not in _id_map:
raise DAPException("no sourceReference " + str(ref))
return _id_map[ref]["path"]
@request("loadedSources")
@capability("supportsLoadedSourcesRequest")
def loaded_sources(**extra):
result = []
for elt in gdb.execute_mi("-file-list-exec-source-files")["files"]:
result.append(make_source(elt["fullname"], elt["file"]))
return {
"sources": result,
}
@request("source")
def source(*, source=None, sourceReference: int, **extra):
# The 'sourceReference' parameter is required by the spec, but is
# for backward compatibility, which I take to mean that the
# 'source' is preferred.
if source is None:
source = {"sourceReference": sourceReference}
filename = decode_source(source)
with open(filename) as f:
content = f.read()
return {
"content": content,
}
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