forked from mirrors/gecko-dev
460af6d1f4
Source-Repo: https://github.com/servo/servo Source-Revision: e40f54bfefe29af943c1b4aebe9cfdf127fe0050
341 lines
13 KiB
Python
341 lines
13 KiB
Python
# 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/.
|
|
|
|
from WebIDL import IDLInterface
|
|
|
|
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:
|
|
# Some toplevel things are sadly types, and those have an
|
|
# isInterface that doesn't mean the same thing as IDLObject's
|
|
# isInterface()...
|
|
if not isinstance(thing, IDLInterface):
|
|
continue
|
|
|
|
iface = thing
|
|
self.interfaces[iface.identifier.name] = iface
|
|
if iface.identifier.name not in config:
|
|
# Completely skip consequential interfaces with no descriptor
|
|
# if they have no interface object because chances are we
|
|
# don't need to do anything interesting with them.
|
|
if iface.isConsequential() and not iface.hasInterfaceObject():
|
|
continue
|
|
entry = {}
|
|
else:
|
|
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 == '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."""
|
|
if not webIDLFile:
|
|
return items
|
|
|
|
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
|
|
|
|
# Callback types do not use JS smart pointers, so we should not use the
|
|
# built-in rooting mechanisms for them.
|
|
if self.interface.isCallback():
|
|
self.needsRooting = False
|
|
else:
|
|
self.needsRooting = True
|
|
|
|
self.returnType = desc.get('returnType', "Temporary<%s>" % ifaceName)
|
|
self.argumentType = "JSRef<%s>" % ifaceName
|
|
self.memberType = "Root<'a, 'b, %s>" % ifaceName
|
|
self.nativeType = desc.get('nativeType', 'JS<%s>' % ifaceName)
|
|
self.concreteType = desc.get('concreteType', ifaceName)
|
|
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 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
|
|
|
|
def isGlobal(self):
|
|
"""
|
|
Returns true if this is the primary interface for a global object
|
|
of some sort.
|
|
"""
|
|
return (self.interface.getExtendedAttribute("Global") or
|
|
self.interface.getExtendedAttribute("PrimaryGlobal"))
|
|
|
|
|
|
# Some utility methods
|
|
def getTypesFromDescriptor(descriptor):
|
|
"""
|
|
Get all argument and return types for all members of the descriptor
|
|
"""
|
|
members = [m for m in descriptor.interface.members]
|
|
if descriptor.interface.ctor():
|
|
members.append(descriptor.interface.ctor())
|
|
members.extend(descriptor.interface.namedConstructors)
|
|
signatures = [s for m in members if m.isMethod() for s in m.signatures()]
|
|
types = []
|
|
for s in signatures:
|
|
assert len(s) == 2
|
|
(returnType, arguments) = s
|
|
types.append(returnType)
|
|
types.extend(a.type for a in arguments)
|
|
|
|
types.extend(a.type for a in members if a.isAttr())
|
|
return types
|
|
|
|
def getFlatTypes(types):
|
|
retval = set()
|
|
for type in types:
|
|
type = type.unroll()
|
|
if type.isUnion():
|
|
retval |= set(type.flatMemberTypes)
|
|
else:
|
|
retval.add(type)
|
|
return retval
|
|
|
|
def getTypesFromDictionary(dictionary):
|
|
"""
|
|
Get all member types for this dictionary
|
|
"""
|
|
types = []
|
|
curDict = dictionary
|
|
while curDict:
|
|
types.extend([m.type for m in curDict.members])
|
|
curDict = curDict.parent
|
|
return types
|
|
|
|
def getTypesFromCallback(callback):
|
|
"""
|
|
Get the types this callback depends on: its return type and the
|
|
types of its arguments.
|
|
"""
|
|
sig = callback.signatures()[0]
|
|
types = [sig[0]] # Return type
|
|
types.extend(arg.type for arg in sig[1]) # Arguments
|
|
return types
|