/usr/share/glib-2.0/codegen/parser.py is in libglib2.0-dev 2.42.1-1+b1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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# GDBus - GLib D-Bus Library
#
# Copyright (C) 2008-2011 Red Hat, Inc.
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2 of the License, or (at your option) any later version.
#
# This library 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
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General
# Public License along with this library; if not, see <http://www.gnu.org/licenses/>.
#
# Author: David Zeuthen <davidz@redhat.com>
import sys
import xml.parsers.expat
from . import dbustypes
class DBusXMLParser:
STATE_TOP = 'top'
STATE_NODE = 'node'
STATE_INTERFACE = 'interface'
STATE_METHOD = 'method'
STATE_SIGNAL = 'signal'
STATE_PROPERTY = 'property'
STATE_ARG = 'arg'
STATE_ANNOTATION = 'annotation'
STATE_IGNORED = 'ignored'
def __init__(self, xml_data):
self._parser = xml.parsers.expat.ParserCreate()
self._parser.CommentHandler = self.handle_comment
self._parser.CharacterDataHandler = self.handle_char_data
self._parser.StartElementHandler = self.handle_start_element
self._parser.EndElementHandler = self.handle_end_element
self.parsed_interfaces = []
self._cur_object = None
self.state = DBusXMLParser.STATE_TOP
self.state_stack = []
self._cur_object = None
self._cur_object_stack = []
self.doc_comment_last_symbol = ''
self._parser.Parse(xml_data)
COMMENT_STATE_BEGIN = 'begin'
COMMENT_STATE_PARAMS = 'params'
COMMENT_STATE_BODY = 'body'
COMMENT_STATE_SKIP = 'skip'
def handle_comment(self, data):
comment_state = DBusXMLParser.COMMENT_STATE_BEGIN;
lines = data.split('\n')
symbol = ''
body = ''
in_para = False
params = {}
for line in lines:
orig_line = line
line = line.lstrip()
if comment_state == DBusXMLParser.COMMENT_STATE_BEGIN:
if len(line) > 0:
colon_index = line.find(': ')
if colon_index == -1:
if line.endswith(':'):
symbol = line[0:len(line)-1]
comment_state = DBusXMLParser.COMMENT_STATE_PARAMS
else:
comment_state = DBusXMLParser.COMMENT_STATE_SKIP
else:
symbol = line[0:colon_index]
rest_of_line = line[colon_index+2:].strip()
if len(rest_of_line) > 0:
body += '<para>' + rest_of_line + '</para>'
comment_state = DBusXMLParser.COMMENT_STATE_PARAMS
elif comment_state == DBusXMLParser.COMMENT_STATE_PARAMS:
if line.startswith('@'):
colon_index = line.find(': ')
if colon_index == -1:
comment_state = DBusXMLParser.COMMENT_STATE_BODY
if not in_para:
body += '<para>'
in_para = True
body += orig_line + '\n'
else:
param = line[1:colon_index]
docs = line[colon_index + 2:]
params[param] = docs
else:
comment_state = DBusXMLParser.COMMENT_STATE_BODY
if len(line) > 0:
if not in_para:
body += '<para>'
in_para = True
body += orig_line + '\n'
elif comment_state == DBusXMLParser.COMMENT_STATE_BODY:
if len(line) > 0:
if not in_para:
body += '<para>'
in_para = True
body += orig_line + '\n'
else:
if in_para:
body += '</para>'
in_para = False
if in_para:
body += '</para>'
if symbol != '':
self.doc_comment_last_symbol = symbol
self.doc_comment_params = params
self.doc_comment_body = body
def handle_char_data(self, data):
#print 'char_data=%s'%data
pass
def handle_start_element(self, name, attrs):
old_state = self.state
old_cur_object = self._cur_object
if self.state == DBusXMLParser.STATE_IGNORED:
self.state = DBusXMLParser.STATE_IGNORED
elif self.state == DBusXMLParser.STATE_TOP:
if name == DBusXMLParser.STATE_NODE:
self.state = DBusXMLParser.STATE_NODE
else:
self.state = DBusXMLParser.STATE_IGNORED
elif self.state == DBusXMLParser.STATE_NODE:
if name == DBusXMLParser.STATE_INTERFACE:
self.state = DBusXMLParser.STATE_INTERFACE
iface = dbustypes.Interface(attrs['name'])
self._cur_object = iface
self.parsed_interfaces.append(iface)
elif name == DBusXMLParser.STATE_ANNOTATION:
self.state = DBusXMLParser.STATE_ANNOTATION
anno = dbustypes.Annotation(attrs['name'], attrs['value'])
self._cur_object.annotations.append(anno)
self._cur_object = anno
else:
self.state = DBusXMLParser.STATE_IGNORED
# assign docs, if any
if 'name' in attrs and self.doc_comment_last_symbol == attrs['name']:
self._cur_object.doc_string = self.doc_comment_body
if 'short_description' in self.doc_comment_params:
short_description = self.doc_comment_params['short_description']
self._cur_object.doc_string_brief = short_description
if 'since' in self.doc_comment_params:
self._cur_object.since = self.doc_comment_params['since']
elif self.state == DBusXMLParser.STATE_INTERFACE:
if name == DBusXMLParser.STATE_METHOD:
self.state = DBusXMLParser.STATE_METHOD
method = dbustypes.Method(attrs['name'])
self._cur_object.methods.append(method)
self._cur_object = method
elif name == DBusXMLParser.STATE_SIGNAL:
self.state = DBusXMLParser.STATE_SIGNAL
signal = dbustypes.Signal(attrs['name'])
self._cur_object.signals.append(signal)
self._cur_object = signal
elif name == DBusXMLParser.STATE_PROPERTY:
self.state = DBusXMLParser.STATE_PROPERTY
prop = dbustypes.Property(attrs['name'], attrs['type'], attrs['access'])
self._cur_object.properties.append(prop)
self._cur_object = prop
elif name == DBusXMLParser.STATE_ANNOTATION:
self.state = DBusXMLParser.STATE_ANNOTATION
anno = dbustypes.Annotation(attrs['name'], attrs['value'])
self._cur_object.annotations.append(anno)
self._cur_object = anno
else:
self.state = DBusXMLParser.STATE_IGNORED
# assign docs, if any
if 'name' in attrs and self.doc_comment_last_symbol == attrs['name']:
self._cur_object.doc_string = self.doc_comment_body
if 'since' in self.doc_comment_params:
self._cur_object.since = self.doc_comment_params['since']
elif self.state == DBusXMLParser.STATE_METHOD:
if name == DBusXMLParser.STATE_ARG:
self.state = DBusXMLParser.STATE_ARG
arg_name = None
if 'name' in attrs:
arg_name = attrs['name']
arg = dbustypes.Arg(arg_name, attrs['type'])
direction = attrs.get('direction', 'in')
if direction == 'in':
self._cur_object.in_args.append(arg)
elif direction == 'out':
self._cur_object.out_args.append(arg)
else:
raise RuntimeError('Invalid direction "%s"'%(direction))
self._cur_object = arg
elif name == DBusXMLParser.STATE_ANNOTATION:
self.state = DBusXMLParser.STATE_ANNOTATION
anno = dbustypes.Annotation(attrs['name'], attrs['value'])
self._cur_object.annotations.append(anno)
self._cur_object = anno
else:
self.state = DBusXMLParser.STATE_IGNORED
# assign docs, if any
if self.doc_comment_last_symbol == old_cur_object.name:
if 'name' in attrs and attrs['name'] in self.doc_comment_params:
doc_string = self.doc_comment_params[attrs['name']]
if doc_string != None:
self._cur_object.doc_string = doc_string
if 'since' in self.doc_comment_params:
self._cur_object.since = self.doc_comment_params['since']
elif self.state == DBusXMLParser.STATE_SIGNAL:
if name == DBusXMLParser.STATE_ARG:
self.state = DBusXMLParser.STATE_ARG
arg_name = None
if 'name' in attrs:
arg_name = attrs['name']
arg = dbustypes.Arg(arg_name, attrs['type'])
self._cur_object.args.append(arg)
self._cur_object = arg
elif name == DBusXMLParser.STATE_ANNOTATION:
self.state = DBusXMLParser.STATE_ANNOTATION
anno = dbustypes.Annotation(attrs['name'], attrs['value'])
self._cur_object.annotations.append(anno)
self._cur_object = anno
else:
self.state = DBusXMLParser.STATE_IGNORED
# assign docs, if any
if self.doc_comment_last_symbol == old_cur_object.name:
if 'name' in attrs and attrs['name'] in self.doc_comment_params:
doc_string = self.doc_comment_params[attrs['name']]
if doc_string != None:
self._cur_object.doc_string = doc_string
if 'since' in self.doc_comment_params:
self._cur_object.since = self.doc_comment_params['since']
elif self.state == DBusXMLParser.STATE_PROPERTY:
if name == DBusXMLParser.STATE_ANNOTATION:
self.state = DBusXMLParser.STATE_ANNOTATION
anno = dbustypes.Annotation(attrs['name'], attrs['value'])
self._cur_object.annotations.append(anno)
self._cur_object = anno
else:
self.state = DBusXMLParser.STATE_IGNORED
elif self.state == DBusXMLParser.STATE_ARG:
if name == DBusXMLParser.STATE_ANNOTATION:
self.state = DBusXMLParser.STATE_ANNOTATION
anno = dbustypes.Annotation(attrs['name'], attrs['value'])
self._cur_object.annotations.append(anno)
self._cur_object = anno
else:
self.state = DBusXMLParser.STATE_IGNORED
elif self.state == DBusXMLParser.STATE_ANNOTATION:
if name == DBusXMLParser.STATE_ANNOTATION:
self.state = DBusXMLParser.STATE_ANNOTATION
anno = dbustypes.Annotation(attrs['name'], attrs['value'])
self._cur_object.annotations.append(anno)
self._cur_object = anno
else:
self.state = DBusXMLParser.STATE_IGNORED
else:
raise RuntimeError('Unhandled state "%s" while entering element with name "%s"'%(self.state, name))
self.state_stack.append(old_state)
self._cur_object_stack.append(old_cur_object)
def handle_end_element(self, name):
self.state = self.state_stack.pop()
self._cur_object = self._cur_object_stack.pop()
def parse_dbus_xml(xml_data):
parser = DBusXMLParser(xml_data)
return parser.parsed_interfaces
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