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# -*- Mode: Python -*-
# GObject-Introspection - a framework for introspecting GObject libraries
# Copyright (C) 2008 Johan Dahlin
#
# 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 2
# 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, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
# 02110-1301, USA.
#
from xml.etree.cElementTree import parse
from .ast import Alias, Callback, Function, Parameter, Return, Struct, Type
from .glibast import GLibBoxed, GLibInterface, GLibObject
CORE_NS = "http://www.gtk.org/introspection/core/1.0"
C_NS = "http://www.gtk.org/introspection/c/1.0"
GLIB_NS = "http://www.gtk.org/introspection/glib/1.0"
def _corens(tag):
return '{%s}%s' % (CORE_NS, tag)
def _glibns(tag):
return '{%s}%s' % (GLIB_NS, tag)
def _cns(tag):
return '{%s}%s' % (C_NS, tag)
class GIRParser(object):
def __init__(self, filename):
self._nodes = []
self._namespace_name = None
tree = parse(filename)
self._parse_api(tree.getroot())
# Public API
def get_namespace_name(self):
return self._namespace_name
def get_nodes(self):
return self._nodes
# Private
def _add_node(self, node):
self._nodes.append(node)
def _parse_api(self, root):
assert root.tag == _corens('repository')
ns = root.find(_corens('namespace'))
assert ns is not None
self._namespace_name = ns.attrib['name']
for child in ns.getchildren():
self._parse_node(child)
def _parse_node(self, node):
if node.tag == _corens('alias'):
self._add_node(self._parse_alias(node))
elif node.tag in [_corens('callback')]:
self._add_node(self._parse_function(node, Callback))
elif node.tag in [_corens('function')]:
self._add_node(self._parse_function(node, Function))
elif node.tag in [_corens('class'),
_corens('interface')]:
self._parse_object_interface(node)
elif node.tag == _corens('record'):
struct = Struct(node.attrib['name'],
node.attrib[_cns('type')])
self._add_node(struct)
elif node.tag == _glibns('boxed'):
self._parse_boxed(node)
elif node.tag in [_corens('interface'),
_corens('enumeration'),
_corens('bitfield'),
]:
pass
def _parse_alias(self, node):
return Alias(node.attrib['name'],
node.attrib['target'])
def _parse_object_interface(self, node):
if node.tag == _corens('interface'):
klass = GLibInterface
elif node.tag == _corens('class'):
klass = GLibObject
else:
raise AssertionError(node)
obj = klass(node.attrib['name'],
node.attrib.get('parent'),
node.attrib[_glibns('type-name')],
node.attrib[_glibns('get-type')])
for method in node.findall(_corens('method')):
obj.methods.append(self._parse_function(method, Function))
for ctor in node.findall(_corens('constructor')):
obj.constructors.append(self._parse_function(ctor, Function))
for callback in node.findall(_corens('callback')):
obj.fields.append(self._parse_function(callback, Callback))
self._add_node(obj)
def _parse_function(self, node, klass):
name = node.attrib['name']
retval = Return(self._parse_type(node.find(_corens('return-value'))))
parameters = []
for paramnode in node.findall('parameter'):
parameters.append(Parameter(paramnode.attrib['name'],
self._parse_type(paramnode)))
if klass is Callback:
return klass(name, retval, parameters)
else:
identifier = node.attrib.get(_cns('identifier'))
return klass(name, retval, parameters, identifier)
def _parse_type(self, node):
typenode = node.find(_corens('type'))
if node is None:
raise ValueError("failed to find type")
return Type(typenode.attrib['name'],
typenode.attrib[_cns('type')])
def _parse_boxed(self, node):
obj = GLibBoxed(node.attrib[_glibns('name')],
node.attrib[_glibns('type-name')],
node.attrib[_glibns('get-type')])
for method in node.findall(_corens('method')):
obj.methods.append(self._parse_function(method, Function))
for ctor in node.findall(_corens('constructor')):
obj.constructors.append(self._parse_function(ctor, Function))
for callback in node.findall(_corens('callback')):
obj.fields.append(self._parse_function(callback, Callback))
self._add_node(obj)
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