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e3f80b9254
This is a reimplementation of commit
4aba03562b from Will Thompson, but
conditional on the caller passing `--glib-min-version 2.64` to
`gdbus-codegen` to explicitly opt-in to the new behaviour.
From the commit message for that commit:
Previously, if a method was not annotated with org.gtk.GDBus.C.UnixFD
then the generated code would never contain GUnixFDList parameters, even
if the method has 'h' (file descriptor) parameters. However, in this
case, the generated code is essentially useless: the method cannot be
called or handled except in degenerate cases where the file descriptors
are missing or ignored.
Check the argument types for 'h', and if present, generate code as if
org.gtk.GDBus.C.UnixFD annotation were specified.
Includes a unit test too.
Signed-off-by: Philip Withnall <withnall@endlessm.com>
Fixes: #1726
297 lines
13 KiB
Python
297 lines
13 KiB
Python
# -*- Mode: Python -*-
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# GDBus - GLib D-Bus Library
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#
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# Copyright (C) 2008-2011 Red Hat, Inc.
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#
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# This library is free software; you can redistribute it and/or
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# modify it under the terms of the GNU Lesser General Public
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# License as published by the Free Software Foundation; either
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# version 2.1 of the License, or (at your option) any later version.
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#
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# This library is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# Lesser General Public License for more details.
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#
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# You should have received a copy of the GNU Lesser General
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# Public License along with this library; if not, see <http://www.gnu.org/licenses/>.
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#
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# Author: David Zeuthen <davidz@redhat.com>
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import sys
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import xml.parsers.expat
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from . import dbustypes
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from .utils import print_error
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class DBusXMLParser:
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STATE_TOP = 'top'
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STATE_NODE = 'node'
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STATE_INTERFACE = 'interface'
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STATE_METHOD = 'method'
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STATE_SIGNAL = 'signal'
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STATE_PROPERTY = 'property'
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STATE_ARG = 'arg'
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STATE_ANNOTATION = 'annotation'
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STATE_IGNORED = 'ignored'
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def __init__(self, xml_data, h_type_implies_unix_fd=True):
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self._parser = xml.parsers.expat.ParserCreate()
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self._parser.CommentHandler = self.handle_comment
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self._parser.CharacterDataHandler = self.handle_char_data
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self._parser.StartElementHandler = self.handle_start_element
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self._parser.EndElementHandler = self.handle_end_element
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self.parsed_interfaces = []
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self._cur_object = None
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self.state = DBusXMLParser.STATE_TOP
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self.state_stack = []
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self._cur_object = None
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self._cur_object_stack = []
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self.doc_comment_last_symbol = ''
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self._h_type_implies_unix_fd = h_type_implies_unix_fd
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self._parser.Parse(xml_data)
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COMMENT_STATE_BEGIN = 'begin'
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COMMENT_STATE_PARAMS = 'params'
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COMMENT_STATE_BODY = 'body'
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COMMENT_STATE_SKIP = 'skip'
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def handle_comment(self, data):
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comment_state = DBusXMLParser.COMMENT_STATE_BEGIN;
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lines = data.split('\n')
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symbol = ''
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body = ''
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in_para = False
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params = {}
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for line in lines:
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orig_line = line
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line = line.lstrip()
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if comment_state == DBusXMLParser.COMMENT_STATE_BEGIN:
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if len(line) > 0:
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colon_index = line.find(': ')
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if colon_index == -1:
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if line.endswith(':'):
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symbol = line[0:len(line)-1]
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comment_state = DBusXMLParser.COMMENT_STATE_PARAMS
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else:
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comment_state = DBusXMLParser.COMMENT_STATE_SKIP
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else:
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symbol = line[0:colon_index]
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rest_of_line = line[colon_index+2:].strip()
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if len(rest_of_line) > 0:
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body += '<para>' + rest_of_line + '</para>'
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comment_state = DBusXMLParser.COMMENT_STATE_PARAMS
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elif comment_state == DBusXMLParser.COMMENT_STATE_PARAMS:
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if line.startswith('@'):
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colon_index = line.find(': ')
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if colon_index == -1:
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comment_state = DBusXMLParser.COMMENT_STATE_BODY
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if not in_para:
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body += '<para>'
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in_para = True
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body += orig_line + '\n'
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else:
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param = line[1:colon_index]
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docs = line[colon_index + 2:]
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params[param] = docs
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else:
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comment_state = DBusXMLParser.COMMENT_STATE_BODY
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if len(line) > 0:
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if not in_para:
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body += '<para>'
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in_para = True
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body += orig_line + '\n'
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elif comment_state == DBusXMLParser.COMMENT_STATE_BODY:
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if len(line) > 0:
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if not in_para:
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body += '<para>'
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in_para = True
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body += orig_line + '\n'
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else:
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if in_para:
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body += '</para>'
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in_para = False
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if in_para:
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body += '</para>'
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if symbol != '':
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self.doc_comment_last_symbol = symbol
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self.doc_comment_params = params
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self.doc_comment_body = body
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def handle_char_data(self, data):
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#print 'char_data=%s'%data
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pass
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def handle_start_element(self, name, attrs):
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old_state = self.state
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old_cur_object = self._cur_object
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if self.state == DBusXMLParser.STATE_IGNORED:
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self.state = DBusXMLParser.STATE_IGNORED
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elif self.state == DBusXMLParser.STATE_TOP:
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if name == DBusXMLParser.STATE_NODE:
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self.state = DBusXMLParser.STATE_NODE
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else:
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self.state = DBusXMLParser.STATE_IGNORED
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elif self.state == DBusXMLParser.STATE_NODE:
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if name == DBusXMLParser.STATE_INTERFACE:
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self.state = DBusXMLParser.STATE_INTERFACE
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iface = dbustypes.Interface(attrs['name'])
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self._cur_object = iface
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self.parsed_interfaces.append(iface)
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elif name == DBusXMLParser.STATE_ANNOTATION:
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self.state = DBusXMLParser.STATE_ANNOTATION
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anno = dbustypes.Annotation(attrs['name'], attrs['value'])
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self._cur_object.annotations.append(anno)
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self._cur_object = anno
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else:
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self.state = DBusXMLParser.STATE_IGNORED
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# assign docs, if any
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if 'name' in attrs and self.doc_comment_last_symbol == attrs['name']:
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self._cur_object.doc_string = self.doc_comment_body
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if 'short_description' in self.doc_comment_params:
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short_description = self.doc_comment_params['short_description']
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self._cur_object.doc_string_brief = short_description
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if 'since' in self.doc_comment_params:
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self._cur_object.since = \
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self.doc_comment_params['since'].strip()
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elif self.state == DBusXMLParser.STATE_INTERFACE:
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if name == DBusXMLParser.STATE_METHOD:
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self.state = DBusXMLParser.STATE_METHOD
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method = dbustypes.Method(attrs['name'],
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h_type_implies_unix_fd=self._h_type_implies_unix_fd)
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self._cur_object.methods.append(method)
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self._cur_object = method
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elif name == DBusXMLParser.STATE_SIGNAL:
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self.state = DBusXMLParser.STATE_SIGNAL
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signal = dbustypes.Signal(attrs['name'])
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self._cur_object.signals.append(signal)
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self._cur_object = signal
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elif name == DBusXMLParser.STATE_PROPERTY:
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self.state = DBusXMLParser.STATE_PROPERTY
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prop = dbustypes.Property(attrs['name'], attrs['type'], attrs['access'])
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self._cur_object.properties.append(prop)
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self._cur_object = prop
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elif name == DBusXMLParser.STATE_ANNOTATION:
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self.state = DBusXMLParser.STATE_ANNOTATION
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anno = dbustypes.Annotation(attrs['name'], attrs['value'])
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self._cur_object.annotations.append(anno)
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self._cur_object = anno
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else:
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self.state = DBusXMLParser.STATE_IGNORED
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# assign docs, if any
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if 'name' in attrs and self.doc_comment_last_symbol == attrs['name']:
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self._cur_object.doc_string = self.doc_comment_body
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if 'since' in self.doc_comment_params:
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self._cur_object.since = \
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self.doc_comment_params['since'].strip()
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elif self.state == DBusXMLParser.STATE_METHOD:
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if name == DBusXMLParser.STATE_ARG:
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self.state = DBusXMLParser.STATE_ARG
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arg_name = None
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if 'name' in attrs:
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arg_name = attrs['name']
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arg = dbustypes.Arg(arg_name, attrs['type'])
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direction = attrs.get('direction', 'in')
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if direction == 'in':
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self._cur_object.in_args.append(arg)
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elif direction == 'out':
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self._cur_object.out_args.append(arg)
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else:
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print_error('Invalid direction "{}"'.format(direction))
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self._cur_object = arg
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elif name == DBusXMLParser.STATE_ANNOTATION:
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self.state = DBusXMLParser.STATE_ANNOTATION
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anno = dbustypes.Annotation(attrs['name'], attrs['value'])
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self._cur_object.annotations.append(anno)
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self._cur_object = anno
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else:
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self.state = DBusXMLParser.STATE_IGNORED
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# assign docs, if any
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if self.doc_comment_last_symbol == old_cur_object.name:
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if 'name' in attrs and attrs['name'] in self.doc_comment_params:
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doc_string = self.doc_comment_params[attrs['name']]
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if doc_string != None:
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self._cur_object.doc_string = doc_string
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if 'since' in self.doc_comment_params:
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self._cur_object.since = \
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self.doc_comment_params['since'].strip()
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elif self.state == DBusXMLParser.STATE_SIGNAL:
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if name == DBusXMLParser.STATE_ARG:
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self.state = DBusXMLParser.STATE_ARG
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arg_name = None
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if 'name' in attrs:
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arg_name = attrs['name']
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arg = dbustypes.Arg(arg_name, attrs['type'])
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self._cur_object.args.append(arg)
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self._cur_object = arg
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elif name == DBusXMLParser.STATE_ANNOTATION:
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self.state = DBusXMLParser.STATE_ANNOTATION
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anno = dbustypes.Annotation(attrs['name'], attrs['value'])
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self._cur_object.annotations.append(anno)
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self._cur_object = anno
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else:
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self.state = DBusXMLParser.STATE_IGNORED
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# assign docs, if any
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if self.doc_comment_last_symbol == old_cur_object.name:
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if 'name' in attrs and attrs['name'] in self.doc_comment_params:
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doc_string = self.doc_comment_params[attrs['name']]
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if doc_string != None:
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self._cur_object.doc_string = doc_string
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if 'since' in self.doc_comment_params:
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self._cur_object.since = \
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self.doc_comment_params['since'].strip()
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elif self.state == DBusXMLParser.STATE_PROPERTY:
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if name == DBusXMLParser.STATE_ANNOTATION:
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self.state = DBusXMLParser.STATE_ANNOTATION
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anno = dbustypes.Annotation(attrs['name'], attrs['value'])
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self._cur_object.annotations.append(anno)
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self._cur_object = anno
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else:
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self.state = DBusXMLParser.STATE_IGNORED
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elif self.state == DBusXMLParser.STATE_ARG:
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if name == DBusXMLParser.STATE_ANNOTATION:
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self.state = DBusXMLParser.STATE_ANNOTATION
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anno = dbustypes.Annotation(attrs['name'], attrs['value'])
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self._cur_object.annotations.append(anno)
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self._cur_object = anno
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else:
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self.state = DBusXMLParser.STATE_IGNORED
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elif self.state == DBusXMLParser.STATE_ANNOTATION:
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if name == DBusXMLParser.STATE_ANNOTATION:
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self.state = DBusXMLParser.STATE_ANNOTATION
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anno = dbustypes.Annotation(attrs['name'], attrs['value'])
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self._cur_object.annotations.append(anno)
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self._cur_object = anno
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else:
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self.state = DBusXMLParser.STATE_IGNORED
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else:
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print_error('Unhandled state "{}" while entering element with name "{}"'.format(self.state, name))
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self.state_stack.append(old_state)
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self._cur_object_stack.append(old_cur_object)
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def handle_end_element(self, name):
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self.state = self.state_stack.pop()
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self._cur_object = self._cur_object_stack.pop()
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def parse_dbus_xml(xml_data, h_type_implies_unix_fd):
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parser = DBusXMLParser(xml_data, h_type_implies_unix_fd)
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return parser.parsed_interfaces
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