mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
7a5392b28d
There are several changes here: 1) Adds some MutableThis methods to Optional, Nullable, and dictionaries to effectively allow doing a const_cast without knowing the actual type being templated over. I needed this because I do not in fact know that type in the relevant code. I'm open to suggestions for a better name for this method. 2) Adds some operator& to RootedJSValue to make it look more like a JS::Value, and in particular so I can JS_WrapValue the thing in it. 3) Adds a Slot() method to NonNullLazyRootedObject, just like NonNull has. 4) Adds an operator& to LazyRootedObject to make it look more like JSObject* so I can JS_WrapObject the thing in it. 5) Implements the actual rewrapping of the arguments into the content compartment. 6) Fixes a small preexisting bug in which we didn't look at named constructors in getTypesFromDescriptor (this was causing my tests to not compile). 7) Changes Xrays to not enter the content compartment when calling a WebIDL constructor. 8) Adds some friend API to report things as not being functions.
549 lines
24 KiB
Python
549 lines
24 KiB
Python
# This Source Code Form is subject to the terms of the Mozilla Public
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# License, v. 2.0. If a copy of the MPL was not distributed with this file,
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# You can obtain one at http://mozilla.org/MPL/2.0/.
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from WebIDL import IDLInterface, IDLExternalInterface
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import os
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autogenerated_comment = "/* THIS FILE IS AUTOGENERATED - DO NOT EDIT */\n"
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class Configuration:
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"""
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Represents global configuration state based on IDL parse data and
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the configuration file.
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"""
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def __init__(self, filename, parseData):
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# Read the configuration file.
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glbl = {}
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execfile(filename, glbl)
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config = glbl['DOMInterfaces']
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# Build descriptors for all the interfaces we have in the parse data.
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# This allows callers to specify a subset of interfaces by filtering
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# |parseData|.
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self.descriptors = []
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self.interfaces = {}
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self.maxProtoChainLength = 0;
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for thing in parseData:
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# Some toplevel things are sadly types, and those have an
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# isInterface that doesn't mean the same thing as IDLObject's
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# isInterface()...
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if (not isinstance(thing, IDLInterface) and
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not isinstance(thing, IDLExternalInterface)):
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continue
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iface = thing
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self.interfaces[iface.identifier.name] = iface
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if iface.identifier.name not in config:
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# Completely skip consequential interfaces with no descriptor
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# if they have no interface object because chances are we
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# don't need to do anything interesting with them.
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if iface.isConsequential() and not iface.hasInterfaceObject():
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continue
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entry = {}
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else:
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entry = config[iface.identifier.name]
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if not isinstance(entry, list):
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assert isinstance(entry, dict)
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entry = [entry]
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elif len(entry) == 1 and entry[0].get("workers", False):
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# List with only a workers descriptor means we should
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# infer a mainthread descriptor. If you want only
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# workers bindings, don't use a list here.
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entry.append({})
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self.descriptors.extend([Descriptor(self, iface, x) for x in entry])
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# Mark the descriptors for which the nativeType corresponds to exactly
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# one interface.
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for descriptor in self.descriptors:
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descriptor.unsharedImplementation = all(
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d.nativeType != descriptor.nativeType or d == descriptor
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for d in self.descriptors)
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self.enums = [e for e in parseData if e.isEnum()]
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# Figure out what our main-thread and worker dictionaries and callbacks
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# are.
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mainTypes = set()
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for descriptor in ([self.getDescriptor("DummyInterface", workers=False)] +
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self.getDescriptors(workers=False, isExternal=False, skipGen=False)):
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mainTypes |= set(getFlatTypes(getTypesFromDescriptor(descriptor)))
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(mainCallbacks, mainDictionaries) = findCallbacksAndDictionaries(mainTypes)
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workerTypes = set();
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for descriptor in ([self.getDescriptor("DummyInterfaceWorkers", workers=True)] +
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self.getDescriptors(workers=True, isExternal=False, skipGen=False)):
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workerTypes |= set(getFlatTypes(getTypesFromDescriptor(descriptor)))
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(workerCallbacks, workerDictionaries) = findCallbacksAndDictionaries(workerTypes)
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self.dictionaries = [d for d in parseData if d.isDictionary()]
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self.callbacks = [c for c in parseData if
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c.isCallback() and not c.isInterface()]
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def flagWorkerOrMainThread(items, main, worker):
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for item in items:
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if item in main:
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item.setUserData("mainThread", True)
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if item in worker:
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item.setUserData("workers", True)
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flagWorkerOrMainThread(self.dictionaries, mainDictionaries,
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workerDictionaries);
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flagWorkerOrMainThread(self.callbacks, mainCallbacks, workerCallbacks)
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# Keep the descriptor list sorted for determinism.
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self.descriptors.sort(lambda x,y: cmp(x.name, y.name))
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def getInterface(self, ifname):
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return self.interfaces[ifname]
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def getDescriptors(self, **filters):
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"""Gets the descriptors that match the given filters."""
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curr = self.descriptors
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for key, val in filters.iteritems():
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if key == 'webIDLFile':
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getter = lambda x: x.interface.filename()
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elif key == 'hasInterfaceObject':
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getter = lambda x: (not x.interface.isExternal() and
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x.interface.hasInterfaceObject())
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elif key == 'hasInterfacePrototypeObject':
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getter = lambda x: (not x.interface.isExternal() and
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x.interface.hasInterfacePrototypeObject())
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elif key == 'hasInterfaceOrInterfacePrototypeObject':
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getter = lambda x: x.hasInterfaceOrInterfacePrototypeObject()
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elif key == 'isCallback':
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getter = lambda x: x.interface.isCallback()
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elif key == 'isExternal':
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getter = lambda x: x.interface.isExternal()
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elif key == 'isJSImplemented':
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getter = lambda x: x.interface.isJSImplemented()
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else:
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getter = lambda x: getattr(x, key)
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curr = filter(lambda x: getter(x) == val, curr)
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return curr
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def getEnums(self, webIDLFile):
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return filter(lambda e: e.filename() == webIDLFile, self.enums)
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@staticmethod
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def _filterForFileAndWorkers(items, filters):
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"""Gets the items that match the given filters."""
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for key, val in filters.iteritems():
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if key == 'webIDLFile':
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items = filter(lambda x: x.filename() == val, items)
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elif key == 'workers':
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if val:
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items = filter(lambda x: x.getUserData("workers", False), items)
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else:
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items = filter(lambda x: x.getUserData("mainThread", False), items)
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else:
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assert(0) # Unknown key
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return items
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def getDictionaries(self, **filters):
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return self._filterForFileAndWorkers(self.dictionaries, filters)
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def getCallbacks(self, **filters):
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return self._filterForFileAndWorkers(self.callbacks, filters)
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def getDescriptor(self, interfaceName, workers):
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"""
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Gets the appropriate descriptor for the given interface name
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and the given workers boolean.
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"""
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iface = self.getInterface(interfaceName)
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descriptors = self.getDescriptors(interface=iface)
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# The only filter we currently have is workers vs non-workers.
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matches = filter(lambda x: x.workers is workers, descriptors)
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# After filtering, we should have exactly one result.
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if len(matches) is not 1:
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raise NoSuchDescriptorError("For " + interfaceName + " found " +
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str(len(matches)) + " matches");
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return matches[0]
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def getDescriptorProvider(self, workers):
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"""
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Gets a descriptor provider that can provide descriptors as needed,
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for the given workers boolean
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"""
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return DescriptorProvider(self, workers)
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class NoSuchDescriptorError(TypeError):
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def __init__(self, str):
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TypeError.__init__(self, str)
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class DescriptorProvider:
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"""
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A way of getting descriptors for interface names
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"""
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def __init__(self, config, workers):
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self.config = config
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self.workers = workers
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def getDescriptor(self, interfaceName):
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"""
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Gets the appropriate descriptor for the given interface name given the
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context of the current descriptor. This selects the appropriate
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implementation for cases like workers.
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"""
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return self.config.getDescriptor(interfaceName, self.workers)
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class Descriptor(DescriptorProvider):
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"""
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Represents a single descriptor for an interface. See Bindings.conf.
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"""
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def __init__(self, config, interface, desc):
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DescriptorProvider.__init__(self, config, desc.get('workers', False))
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self.interface = interface
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# Read the desc, and fill in the relevant defaults.
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ifaceName = self.interface.identifier.name
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if self.interface.isExternal():
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if self.workers:
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nativeTypeDefault = "JSObject"
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else:
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nativeTypeDefault = "nsIDOM" + ifaceName
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elif self.interface.isCallback():
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if self.workers:
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nativeTypeDefault = "JSObject"
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else:
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nativeTypeDefault = "mozilla::dom::" + ifaceName
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else:
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if self.workers:
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nativeTypeDefault = "mozilla::dom::workers::" + ifaceName
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else:
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nativeTypeDefault = "mozilla::dom::" + ifaceName
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self.nativeType = desc.get('nativeType', nativeTypeDefault)
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self.jsImplParent = desc.get('jsImplParent', self.nativeType)
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# Do something sane for JSObject
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if self.nativeType == "JSObject":
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headerDefault = "jsapi.h"
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elif self.interface.isCallback() or self.interface.isJSImplemented():
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# A copy of CGHeaders.getDeclarationFilename; we can't
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# import it here, sadly.
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# Use our local version of the header, not the exported one, so that
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# test bindings, which don't export, will work correctly.
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basename = os.path.basename(self.interface.filename())
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headerDefault = basename.replace('.webidl', 'Binding.h')
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else:
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if self.workers:
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headerDefault = "mozilla/dom/workers/bindings/%s.h" % ifaceName
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elif not self.interface.isExternal() and self.interface.getExtendedAttribute("HeaderFile"):
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headerDefault = self.interface.getExtendedAttribute("HeaderFile")[0]
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else:
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headerDefault = self.nativeType
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headerDefault = headerDefault.replace("::", "/") + ".h"
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self.headerFile = desc.get('headerFile', headerDefault)
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if self.jsImplParent == self.nativeType:
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self.jsImplParentHeader = self.headerFile
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else:
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self.jsImplParentHeader = self.jsImplParent.replace("::", "/") + ".h"
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self.skipGen = desc.get('skipGen', False)
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self.notflattened = desc.get('notflattened', False)
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self.register = desc.get('register', True)
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self.hasXPConnectImpls = desc.get('hasXPConnectImpls', False)
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# If we're concrete, we need to crawl our ancestor interfaces and mark
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# them as having a concrete descendant.
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self.concrete = (not self.interface.isExternal() and
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not self.interface.isCallback() and
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desc.get('concrete', True))
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operations = {
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'IndexedGetter': None,
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'IndexedSetter': None,
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'IndexedCreator': None,
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'IndexedDeleter': None,
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'NamedGetter': None,
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'NamedSetter': None,
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'NamedCreator': None,
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'NamedDeleter': None,
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'Stringifier': None,
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'LegacyCaller': None
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}
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if self.concrete:
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self.proxy = False
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iface = self.interface
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def addOperation(operation, m):
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if not operations[operation]:
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operations[operation] = m
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# Since stringifiers go on the prototype, we only need to worry
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# about our own stringifier, not those of our ancestor interfaces.
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for m in iface.members:
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if m.isMethod() and m.isStringifier():
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addOperation('Stringifier', m)
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# Don't worry about inheriting legacycallers either: in
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# practice these are on most-derived prototypes.
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if m.isMethod() and m.isLegacycaller():
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if not m.isIdentifierLess():
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raise TypeError("We don't support legacycaller with "
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"identifier.\n%s" % m.location);
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if len(m.signatures()) != 1:
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raise TypeError("We don't support overloaded "
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"legacycaller.\n%s" % m.location)
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addOperation('LegacyCaller', m)
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while iface:
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for m in iface.members:
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if not m.isMethod():
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continue
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def addIndexedOrNamedOperation(operation, m):
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self.proxy = True
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if m.isIndexed():
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operation = 'Indexed' + operation
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else:
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assert m.isNamed()
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operation = 'Named' + operation
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addOperation(operation, m)
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if m.isGetter():
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addIndexedOrNamedOperation('Getter', m)
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if m.isSetter():
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addIndexedOrNamedOperation('Setter', m)
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if m.isCreator():
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addIndexedOrNamedOperation('Creator', m)
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if m.isDeleter():
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addIndexedOrNamedOperation('Deleter', m)
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if m.isLegacycaller() and iface != self.interface:
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raise TypeError("We don't support legacycaller on "
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"non-leaf interface %s.\n%s" %
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(iface, iface.location))
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iface.setUserData('hasConcreteDescendant', True)
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iface = iface.parent
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if self.proxy:
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if (not operations['IndexedGetter'] and
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(operations['IndexedSetter'] or
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operations['IndexedDeleter'] or
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operations['IndexedCreator'])):
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raise SyntaxError("%s supports indexed properties but does "
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"not have an indexed getter.\n%s" %
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(self.interface, self.interface.location))
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if (not operations['NamedGetter'] and
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(operations['NamedSetter'] or
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operations['NamedDeleter'] or
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operations['NamedCreator'])):
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raise SyntaxError("%s supports named properties but does "
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"not have a named getter.\n%s" %
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(self.interface, self.interface.location))
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if operations['LegacyCaller']:
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raise SyntaxError("%s has a legacy caller but is a proxy; "
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"we don't support that yet.\n%s" %
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(self.interface, self.interface.location))
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iface = self.interface
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while iface:
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iface.setUserData('hasProxyDescendant', True)
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iface = iface.parent
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self.operations = operations
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if self.workers:
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if desc.get('nativeOwnership', 'worker') != 'worker':
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raise TypeError("Worker descriptor for %s should have 'worker' "
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"as value for nativeOwnership" %
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self.interface.identifier.name)
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self.nativeOwnership = "worker"
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else:
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self.nativeOwnership = desc.get('nativeOwnership', 'nsisupports')
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if not self.nativeOwnership in ['owned', 'refcounted', 'nsisupports']:
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raise TypeError("Descriptor for %s has unrecognized value (%s) "
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"for nativeOwnership" %
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(self.interface.identifier.name, self.nativeOwnership))
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self.customTrace = desc.get('customTrace', self.workers)
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self.customFinalize = desc.get('customFinalize', self.workers)
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self.wrapperCache = (not self.interface.isCallback() and
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(self.workers or
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(self.nativeOwnership != 'owned' and
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desc.get('wrapperCache', True))))
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def make_name(name):
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return name + "_workers" if self.workers else name
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self.name = make_name(interface.identifier.name)
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# self.extendedAttributes is a dict of dicts, keyed on
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# all/getterOnly/setterOnly and then on member name. Values are an
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# array of extended attributes.
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self.extendedAttributes = { 'all': {}, 'getterOnly': {}, 'setterOnly': {} }
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def addExtendedAttribute(attribute, config):
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def add(key, members, attribute):
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for member in members:
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self.extendedAttributes[key].setdefault(member, []).append(attribute)
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if isinstance(config, dict):
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for key in ['all', 'getterOnly', 'setterOnly']:
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add(key, config.get(key, []), attribute)
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elif isinstance(config, list):
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add('all', config, attribute)
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else:
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assert isinstance(config, str)
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if config == '*':
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iface = self.interface
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while iface:
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add('all', map(lambda m: m.name, iface.members), attribute)
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iface = iface.parent
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else:
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add('all', [config], attribute)
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if self.interface.isJSImplemented():
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addExtendedAttribute('implicitJSContext', ['constructor'])
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else:
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for attribute in ['implicitJSContext', 'resultNotAddRefed']:
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addExtendedAttribute(attribute, desc.get(attribute, {}))
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self.binaryNames = desc.get('binaryNames', {})
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if '__legacycaller' not in self.binaryNames:
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self.binaryNames["__legacycaller"] = "LegacyCall"
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if '__stringifier' not in self.binaryNames:
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self.binaryNames["__stringifier"] = "Stringify"
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# Build the prototype chain.
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self.prototypeChain = []
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parent = interface
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while parent:
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self.prototypeChain.insert(0, make_name(parent.identifier.name))
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parent = parent.parent
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config.maxProtoChainLength = max(config.maxProtoChainLength,
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len(self.prototypeChain))
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def hasInterfaceOrInterfacePrototypeObject(self):
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# Forward-declared interfaces don't need either interface object or
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# interface prototype object as they're going to use QI (on main thread)
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# or be passed as a JSObject (on worker threads).
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if self.interface.isExternal():
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return False
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return self.interface.hasInterfaceObject() or self.interface.hasInterfacePrototypeObject()
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def getExtendedAttributes(self, member, getter=False, setter=False):
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def ensureValidThrowsExtendedAttribute(attr):
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assert(attr is None or attr is True or len(attr) == 1)
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if (attr is not None and attr is not True and
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'Workers' not in attr and 'MainThread' not in attr):
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raise TypeError("Unknown value for 'Throws': " + attr[0])
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def maybeAppendInfallibleToAttrs(attrs, throws):
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ensureValidThrowsExtendedAttribute(throws)
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if (throws is None or
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(throws is not True and
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('Workers' not in throws or not self.workers) and
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('MainThread' not in throws or self.workers))):
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attrs.append("infallible")
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name = member.identifier.name
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throws = self.interface.isJSImplemented() or member.getExtendedAttribute("Throws")
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if member.isMethod():
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attrs = self.extendedAttributes['all'].get(name, [])
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maybeAppendInfallibleToAttrs(attrs, throws)
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return attrs
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assert member.isAttr()
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assert bool(getter) != bool(setter)
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key = 'getterOnly' if getter else 'setterOnly'
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attrs = self.extendedAttributes['all'].get(name, []) + self.extendedAttributes[key].get(name, [])
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if throws is None:
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throwsAttr = "GetterThrows" if getter else "SetterThrows"
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throws = member.getExtendedAttribute(throwsAttr)
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maybeAppendInfallibleToAttrs(attrs, throws)
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return attrs
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def supportsIndexedProperties(self):
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return self.operations['IndexedGetter'] is not None
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def supportsNamedProperties(self):
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return self.operations['NamedGetter'] is not None
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def needsConstructHookHolder(self):
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assert self.interface.hasInterfaceObject()
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return False
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def needsHeaderInclude(self):
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"""
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An interface doesn't need a header file if it is not concrete,
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not pref-controlled, and has only consts.
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"""
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return (self.interface.isExternal() or self.concrete or
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|
self.interface.getExtendedAttribute("PrefControlled") or
|
|
self.interface.hasInterfacePrototypeObject())
|
|
|
|
# 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
|
|
|
|
def findCallbacksAndDictionaries(inputTypes):
|
|
"""
|
|
Ensure that all callbacks and dictionaries reachable from types end up in
|
|
the returned callbacks and dictionaries sets.
|
|
|
|
Note that we assume that our initial invocation already includes all types
|
|
reachable via descriptors in "types", so we only have to deal with things
|
|
that are themeselves reachable via callbacks and dictionaries.
|
|
"""
|
|
def doFindCallbacksAndDictionaries(types, callbacks, dictionaries):
|
|
unhandledTypes = set()
|
|
for type in types:
|
|
if type.isCallback() and type not in callbacks:
|
|
unhandledTypes |= getFlatTypes(getTypesFromCallback(type))
|
|
callbacks.add(type)
|
|
elif type.isDictionary() and type.inner not in dictionaries:
|
|
d = type.inner
|
|
unhandledTypes |= getFlatTypes(getTypesFromDictionary(d))
|
|
while d:
|
|
dictionaries.add(d)
|
|
d = d.parent
|
|
if len(unhandledTypes) != 0:
|
|
doFindCallbacksAndDictionaries(unhandledTypes, callbacks, dictionaries)
|
|
|
|
retCallbacks = set()
|
|
retDictionaries = set()
|
|
doFindCallbacksAndDictionaries(inputTypes, retCallbacks, retDictionaries)
|
|
return (retCallbacks, retDictionaries)
|