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# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this file,
# You can obtain one at http://mozilla.org/MPL/2.0/.
autogenerated_comment = "/* THIS FILE IS AUTOGENERATED - DO NOT EDIT */\n"
class Configuration:
"""
Represents global configuration state based on IDL parse data and
the configuration file.
"""
def __init__(self, filename, parseData):
# Read the configuration file.
glbl = {}
execfile(filename, glbl)
config = glbl['DOMInterfaces']
# Build descriptors for all the interfaces we have in the parse data.
# This allows callers to specify a subset of interfaces by filtering
# |parseData|.
self.descriptors = []
self.interfaces = {}
self.maxProtoChainLength = 0;
for thing in parseData:
if not thing.isInterface(): continue
iface = thing
if iface.identifier.name not in config: continue
self.interfaces[iface.identifier.name] = iface
entry = config[iface.identifier.name]
if not isinstance(entry, list):
assert isinstance(entry, dict)
entry = [entry]
self.descriptors.extend([Descriptor(self, iface, x) for x in entry])
# Mark the descriptors for which only a single nativeType implements
# an interface.
for descriptor in self.descriptors:
intefaceName = descriptor.interface.identifier.name
otherDescriptors = [d for d in self.descriptors
if d.interface.identifier.name == intefaceName]
descriptor.uniqueImplementation = len(otherDescriptors) == 1
self.enums = [e for e in parseData if e.isEnum()]
self.dictionaries = [d for d in parseData if d.isDictionary()]
self.callbacks = [c for c in parseData if
c.isCallback() and not c.isInterface()]
# Keep the descriptor list sorted for determinism.
self.descriptors.sort(lambda x,y: cmp(x.name, y.name))
def getInterface(self, ifname):
return self.interfaces[ifname]
def getDescriptors(self, **filters):
"""Gets the descriptors that match the given filters."""
curr = self.descriptors
for key, val in filters.iteritems():
if key == 'webIDLFile':
getter = lambda x: x.interface.filename()
elif key == 'hasInterfaceObject':
getter = lambda x: x.interface.hasInterfaceObject()
elif key == 'hasInterfacePrototypeObject':
getter = lambda x: x.interface.hasInterfacePrototypeObject()
elif key == 'hasInterfaceOrInterfacePrototypeObject':
getter = lambda x: x.hasInterfaceOrInterfacePrototypeObject()
elif key == 'isCallback':
getter = lambda x: x.interface.isCallback()
elif key == 'isJSImplemented':
getter = lambda x: x.interface.isJSImplemented()
else:
getter = lambda x: getattr(x, key)
curr = filter(lambda x: getter(x) == val, curr)
return curr
def getEnums(self, webIDLFile):
return filter(lambda e: e.filename() == webIDLFile, self.enums)
@staticmethod
def _filterForFile(items, webIDLFile=""):
"""Gets the items that match the given filters."""
return filter(lambda x: x.filename() == webIDLFile, items)
def getDictionaries(self, webIDLFile=""):
return self._filterForFile(self.dictionaries, webIDLFile=webIDLFile)
def getCallbacks(self, webIDLFile=""):
return self._filterForFile(self.callbacks, webIDLFile=webIDLFile)
def getDescriptor(self, interfaceName):
"""
Gets the appropriate descriptor for the given interface name.
"""
iface = self.getInterface(interfaceName)
descriptors = self.getDescriptors(interface=iface)
# We should have exactly one result.
if len(descriptors) is not 1:
raise NoSuchDescriptorError("For " + interfaceName + " found " +
str(len(matches)) + " matches");
return descriptors[0]
def getDescriptorProvider(self):
"""
Gets a descriptor provider that can provide descriptors as needed.
"""
return DescriptorProvider(self)
class NoSuchDescriptorError(TypeError):
def __init__(self, str):
TypeError.__init__(self, str)
class DescriptorProvider:
"""
A way of getting descriptors for interface names
"""
def __init__(self, config):
self.config = config
def getDescriptor(self, interfaceName):
"""
Gets the appropriate descriptor for the given interface name given the
context of the current descriptor.
"""
return self.config.getDescriptor(interfaceName)
class Descriptor(DescriptorProvider):
"""
Represents a single descriptor for an interface. See Bindings.conf.
"""
def __init__(self, config, interface, desc):
DescriptorProvider.__init__(self, config)
self.interface = interface
# Read the desc, and fill in the relevant defaults.
ifaceName = self.interface.identifier.name
if self.interface.isCallback():
nativeTypeDefault = "nsIDOM" + ifaceName
else:
nativeTypeDefault = 'JS<%s>' % ifaceName
self.returnType = "Temporary<%s>" % ifaceName
self.nativeType = desc.get('nativeType', nativeTypeDefault)
self.concreteType = desc.get('concreteType', ifaceName)
self.createGlobal = desc.get('createGlobal', False)
self.register = desc.get('register', True)
self.outerObjectHook = desc.get('outerObjectHook', 'None')
# If we're concrete, we need to crawl our ancestor interfaces and mark
# them as having a concrete descendant.
self.concrete = desc.get('concrete', True)
if self.concrete:
self.proxy = False
operations = {
'IndexedGetter': None,
'IndexedSetter': None,
'IndexedCreator': None,
'IndexedDeleter': None,
'NamedGetter': None,
'NamedSetter': None,
'NamedCreator': None,
'NamedDeleter': None,
'Stringifier': None
}
iface = self.interface
while iface:
for m in iface.members:
if not m.isMethod():
continue
def addOperation(operation, m):
if not operations[operation]:
operations[operation] = m
def addIndexedOrNamedOperation(operation, m):
self.proxy = True
if m.isIndexed():
operation = 'Indexed' + operation
else:
assert m.isNamed()
operation = 'Named' + operation
addOperation(operation, m)
if m.isStringifier():
addOperation('Stringifier', m)
else:
if m.isGetter():
addIndexedOrNamedOperation('Getter', m)
if m.isSetter():
addIndexedOrNamedOperation('Setter', m)
if m.isCreator():
addIndexedOrNamedOperation('Creator', m)
if m.isDeleter():
addIndexedOrNamedOperation('Deleter', m)
raise TypeError("deleter specified on %s but we "
"don't support deleters yet" %
self.interface.identifier.name)
iface.setUserData('hasConcreteDescendant', True)
iface = iface.parent
if self.proxy:
self.operations = operations
iface = self.interface
while iface:
iface.setUserData('hasProxyDescendant', True)
iface = iface.parent
self.name = interface.identifier.name
# self.extendedAttributes is a dict of dicts, keyed on
# all/getterOnly/setterOnly and then on member name. Values are an
# array of extended attributes.
self.extendedAttributes = { 'all': {}, 'getterOnly': {}, 'setterOnly': {} }
def addExtendedAttribute(attribute, config):
def add(key, members, attribute):
for member in members:
self.extendedAttributes[key].setdefault(member, []).append(attribute)
if isinstance(config, dict):
for key in ['all', 'getterOnly', 'setterOnly']:
add(key, config.get(key, []), attribute)
elif isinstance(config, list):
add('all', config, attribute)
else:
assert isinstance(config, str)
if config == '*':
iface = self.interface
while iface:
add('all', map(lambda m: m.name, iface.members), attribute)
iface = iface.parent
else:
add('all', [config], attribute)
# Build the prototype chain.
self.prototypeChain = []
parent = interface
while parent:
self.prototypeChain.insert(0, parent.identifier.name)
parent = parent.parent
config.maxProtoChainLength = max(config.maxProtoChainLength,
len(self.prototypeChain))
def hasInterfaceOrInterfacePrototypeObject(self):
return self.interface.hasInterfaceObject() or self.interface.hasInterfacePrototypeObject()
def getExtendedAttributes(self, member, getter=False, setter=False):
def maybeAppendInfallibleToAttrs(attrs, throws):
if throws is None:
attrs.append("infallible")
elif throws is True:
pass
else:
raise TypeError("Unknown value for 'Throws'")
name = member.identifier.name
if member.isMethod():
attrs = self.extendedAttributes['all'].get(name, [])
throws = member.getExtendedAttribute("Throws")
maybeAppendInfallibleToAttrs(attrs, throws)
return attrs
assert member.isAttr()
assert bool(getter) != bool(setter)
key = 'getterOnly' if getter else 'setterOnly'
attrs = self.extendedAttributes['all'].get(name, []) + self.extendedAttributes[key].get(name, [])
throws = member.getExtendedAttribute("Throws")
if throws is None:
throwsAttr = "GetterThrows" if getter else "SetterThrows"
throws = member.getExtendedAttribute(throwsAttr)
maybeAppendInfallibleToAttrs(attrs, throws)
return attrs
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