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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.
#
import ctypes
import re
import os
from . import cgobject
from .odict import odict
from .ast import (Callback, Enum, Function, Parameter, Property, Return,
Sequence, Struct)
from .glibast import (GLibBoxed, GLibEnum, GLibEnumMember, GLibFlags,
GLibInterface, GLibObject, GLibSignal)
# Copied from h2defs.py
_upperstr_pat1 = re.compile(r'([^A-Z])([A-Z])')
_upperstr_pat2 = re.compile(r'([A-Z][A-Z])([A-Z][0-9a-z])')
_upperstr_pat3 = re.compile(r'^([A-Z])([A-Z])')
def to_underscores(name):
"""Converts a typename to the equivalent underscores name.
This is used to form the type conversion macros and enum/flag
name variables"""
name = _upperstr_pat1.sub(r'\1_\2', name)
name = _upperstr_pat2.sub(r'\1_\2', name)
name = _upperstr_pat3.sub(r'\1_\2', name, count=1)
return name
_libtool_pat = re.compile("dlname='([A-z0-9\.]+)'\n")
def resolve_libtool(libname):
data = open(libname).read()
filename = _libtool_pat.search(data).groups()[0]
libname = os.path.join(os.path.dirname(libname),
'.libs', filename)
return libname
class GLibTransformer(object):
def __init__(self, namespace_name):
self._namespace_name = namespace_name
self._output_ns = odict()
self._library = None
self._type_names = {}
# Public API
def get_nodes(self):
return self._output_ns.values()
def load_library(self, libname):
if libname.endswith('.la'):
libname = resolve_libtool(libname)
self._library = ctypes.cdll.LoadLibrary(libname)
def parse(self, nodes):
for node in nodes:
self._parse_node(node)
# Second round, associate GtkButtonClass with GtkButton
for node in self._output_ns.values():
if isinstance(node, Struct):
self._pair_class_struct(node)
def register_include(self, filename):
if filename.endswith('.gir'):
from .girparser import GIRParser
parser = GIRParser(filename)
elif filename.endswith('.gidl'):
from .gidlparser import GIDLParser
parser = GIDLParser(filename)
else:
raise NotImplementedError(filename)
nsname = parser.get_namespace_name()
for node in parser.get_nodes():
self._type_names[node.type_name] = (nsname, node)
# Private
def _add_attribute(self, node, replace=False):
node_name = node.name
if node_name in self._output_ns and not replace:
return
self._output_ns[node_name] = node
def _remove_attribute(self, name):
del self._output_ns[name]
def _get_attribute(self, name):
return self._output_ns.get(name)
def _register_internal_type(self, type_name, node):
self._type_names[type_name] = (None, node)
def _strip_namespace_func(self, name):
orig_name = name
prefix = self._namespace_name.lower() + '_'
name = name.lower()
if name.startswith(prefix):
name = orig_name[len(prefix):]
return name
def _strip_namespace_object(self, name):
orig_name = name
prefix = self._namespace_name.lower()
name = name.lower()
if name.startswith(prefix):
name = orig_name[len(prefix):]
return name
def _resolve_type_name(self, type_name):
item = self._type_names.get(type_name)
if item is not None:
nsname, item = item
if nsname is None:
return item.name
return '%s.%s' % (nsname, item.name)
return type_name
def _resolve_param_type(self, ptype):
type_name = ptype.name.replace('*', '')
ptype.name = ptype.name.replace(type_name,
self._resolve_type_name(type_name))
return ptype
def _parse_node(self, node):
if isinstance(node, Enum):
self._parse_enum(node)
elif isinstance(node, Function):
self._parse_function(node)
elif isinstance(node, Struct):
self._parse_struct(node)
elif isinstance(node, Callback):
self._parse_callback(node)
else:
print 'GOBJECT BUILDER: Unhandled node:', node
def _parse_enum(self, enum):
enum.name = self._strip_namespace_object(enum.name)
self._add_attribute(enum)
def _parse_function(self, func):
if self._parse_get_type_function(func):
return
elif self._parse_constructor(func):
return
elif self._parse_method(func):
return
self._parse_parameters(func.parameters)
func.retval.type = self._resolve_param_type(func.retval.type)
func.name = self._strip_namespace_func(func.name)
self._add_attribute(func)
def _parse_parameters(self, parameters):
for parameter in parameters:
parameter.type = self._resolve_param_type(parameter.type)
def _parse_get_type_function(self, func):
# GType *_get_type(void)
symbol = func.name
if not symbol.endswith('_get_type'):
return False
if func.retval.type.name != 'GType':
return False
if func.parameters:
return False
func = getattr(self._library, symbol)
func.restype = cgobject.GType
func.argtypes = []
type_id = func()
self._introspect_type(type_id, symbol)
return True
def _parse_method(self, func):
if not func.parameters:
return False
# FIXME: This is hackish, we should preserve the pointer structures
# here, so we can find pointers to objects and not just
# pointers to anything
first_arg = func.parameters[0].type.name
if first_arg.count('*') != 1:
return False
object_name = first_arg.replace('*', '')
return self._parse_method_common(func, object_name, is_method=True)
def _parse_constructor(self, func):
# FIXME: This is hackish, we should preserve the pointer structures
# here, so we can find pointers to objects and not just
# pointers to anything
rtype = func.retval.type
if rtype.name.count('*') != 1:
return False
object_name = rtype.name.replace('*', '')
return self._parse_method_common(func, object_name, is_method=False)
def _parse_method_common(self, func, object_name, is_method):
orig_name = object_name
if object_name.lower().startswith(self._namespace_name.lower()):
object_name = object_name[len(self._namespace_name):]
class_ = self._get_attribute(object_name)
if class_ is None or not isinstance(class_, (GLibObject, GLibBoxed)):
return False
# GtkButton -> gtk_button_, so we can figure out the method name
prefix = to_underscores(orig_name).lower() + '_'
if not func.name.startswith(prefix):
return False
# Strip namespace and object prefix: gtk_window_new -> new
func.name = func.name[len(prefix):]
if is_method:
class_.methods.append(func)
else:
class_.constructors.append(func)
self._parse_parameters(func.parameters)
func.retval.type = self._resolve_param_type(func.retval.type)
return True
def _parse_struct(self, struct):
self._add_attribute(struct)
def _parse_callback(self, callback):
self._add_attribute(callback)
def _pair_class_struct(self, class_node):
name = class_node.name
if (name.endswith('Class') or
name.endswith('Iface')):
name = name[:-5]
elif name.endswith('Interface'):
name = name[:-9]
else:
return
node = self._output_ns.get(self._resolve_type_name(name))
del self._output_ns[class_node.name]
for field in class_node.fields[1:]:
node.fields.append(field)
def _introspect_type(self, type_id, symbol):
fundamental_type_id = cgobject.type_fundamental(type_id)
if (fundamental_type_id == cgobject.TYPE_ENUM or
fundamental_type_id == cgobject.TYPE_FLAGS):
self._introspect_enum(fundamental_type_id, type_id, symbol)
elif fundamental_type_id == cgobject.TYPE_OBJECT:
self._introspect_object(type_id, symbol)
elif fundamental_type_id == cgobject.TYPE_INTERFACE:
self._introspect_interface(type_id, symbol)
elif fundamental_type_id == cgobject.TYPE_BOXED:
self._introspect_boxed(type_id, symbol)
else:
print 'unhandled GType: %s' % (cgobject.type_name(type_id),)
def _introspect_enum(self, ftype_id, type_id, symbol):
type_class = cgobject.type_class_ref(type_id)
if type_class is None:
return
members = []
for enum_value in type_class.get_values():
members.append(GLibEnumMember(enum_value.value_name,
enum_value.value,
enum_value.value_nick))
klass = (GLibFlags if ftype_id == cgobject.TYPE_FLAGS else GLibEnum)
type_name = cgobject.type_name(type_id)
node = klass(self._strip_namespace_object(type_name),
members, type_name, symbol)
self._add_attribute(node, replace=True)
self._register_internal_type(type_name, node)
def _introspect_object(self, type_id, symbol):
type_name = cgobject.type_name(type_id)
parent_type_name = cgobject.type_name(cgobject.type_parent(type_id))
node = GLibObject(self._strip_namespace_object(type_name),
self._resolve_type_name(parent_type_name),
type_name, symbol)
self._introspect_properties(node, type_id)
self._introspect_signals(node, type_id)
self._add_attribute(node)
self._remove_attribute(type_name)
self._register_internal_type(type_name, node)
def _introspect_interface(self, type_id, symbol):
type_name = cgobject.type_name(type_id)
node = GLibInterface(self._strip_namespace_object(type_name),
type_name, symbol)
self._introspect_properties(node, type_id)
self._introspect_signals(node, type_id)
self._add_attribute(node)
self._register_internal_type(type_name, node)
def _introspect_boxed(self, type_id, symbol):
type_name = cgobject.type_name(type_id)
node = GLibBoxed(self._strip_namespace_object(type_name),
type_name, symbol)
self._add_attribute(node)
self._register_internal_type(type_name, node)
def _introspect_properties(self, node, type_id):
fundamental_type_id = cgobject.type_fundamental(type_id)
if fundamental_type_id == cgobject.TYPE_OBJECT:
pspecs = cgobject.object_class_list_properties(type_id)
elif fundamental_type_id == cgobject.TYPE_INTERFACE:
pspecs = cgobject.object_interface_list_properties(type_id)
else:
raise AssertionError
for pspec in pspecs:
if pspec.owner_type != type_id:
continue
node.properties.append(Property(
pspec.name,
cgobject.type_name(pspec.value_type)))
def _introspect_signals(self, node, type_id):
for signal_info in cgobject.signal_list(type_id):
retval = Return(cgobject.type_name(signal_info.return_type))
signal = GLibSignal(signal_info.signal_name, retval)
for i, parameter in enumerate(signal_info.get_params()):
if i == 0:
name = 'object'
else:
name = 'p%s' % (i-1,)
signal.parameters.append(
Parameter(name, cgobject.type_name(parameter)))
node.signals.append(signal)
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