1 ##########################################################################
3 # Copyright 2008-2010 VMware, Inc.
6 # Permission is hereby granted, free of charge, to any person obtaining a copy
7 # of this software and associated documentation files (the "Software"), to deal
8 # in the Software without restriction, including without limitation the rights
9 # to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 # copies of the Software, and to permit persons to whom the Software is
11 # furnished to do so, subject to the following conditions:
13 # The above copyright notice and this permission notice shall be included in
14 # all copies or substantial portions of the Software.
16 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19 # AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
24 ##########################################################################/
33 """Base class for all types."""
37 def __init__(self, expr, tag = None):
40 # Generate a default tag, used when naming functions that will operate
41 # on this type, so it should preferrably be something representative of
44 tag = ''.join([c for c in expr if c.isalnum() or c in '_'])
47 assert c.isalnum() or c in '_'
49 # Ensure it is unique.
50 if tag in Type.__tags:
52 while tag + str(suffix) in Type.__tags:
56 assert tag not in Type.__tags
62 """Return the C/C++ type expression for this type."""
65 def visit(self, visitor, *args, **kwargs):
66 raise NotImplementedError
71 """Singleton void type."""
74 Type.__init__(self, "void")
76 def visit(self, visitor, *args, **kwargs):
77 return visitor.visitVoid(self, *args, **kwargs)
83 """Class to describe literal types.
85 Types which are not defined in terms of other types, such as integers and
88 def __init__(self, expr, kind):
89 Type.__init__(self, expr)
92 def visit(self, visitor, *args, **kwargs):
93 return visitor.visitLiteral(self, *args, **kwargs)
98 def __init__(self, type):
99 # While "const foo" and "foo const" are synonymous, "const foo *" and
100 # "foo * const" are not quite the same, and some compilers do enforce
101 # strict const correctness.
102 if isinstance(type, String) or type is WString:
103 # For strings we never intend to say a const pointer to chars, but
104 # rather a point to const chars.
105 expr = "const " + type.expr
106 elif type.expr.startswith("const ") or '*' in type.expr:
107 expr = type.expr + " const"
110 expr = "const " + type.expr
112 Type.__init__(self, expr, 'C' + type.tag)
116 def visit(self, visitor, *args, **kwargs):
117 return visitor.visitConst(self, *args, **kwargs)
122 def __init__(self, type):
123 Type.__init__(self, type.expr + " *", 'P' + type.tag)
126 def visit(self, visitor, *args, **kwargs):
127 return visitor.visitPointer(self, *args, **kwargs)
130 class IntPointer(Type):
131 '''Integer encoded as a pointer.'''
133 def visit(self, visitor, *args, **kwargs):
134 return visitor.visitIntPointer(self, *args, **kwargs)
137 class LinearPointer(Type):
138 '''Integer encoded as a pointer.'''
140 def __init__(self, type, size = None):
141 Type.__init__(self, type.expr + " *", 'P' + type.tag)
145 def visit(self, visitor, *args, **kwargs):
146 return visitor.visitLinearPointer(self, *args, **kwargs)
151 def __init__(self, name, type, range=None, key=None):
152 Type.__init__(self, type.expr, 'P' + type.tag)
158 def visit(self, visitor, *args, **kwargs):
159 return visitor.visitHandle(self, *args, **kwargs)
162 def ConstPointer(type):
163 return Pointer(Const(type))
170 def __init__(self, name, values):
171 Type.__init__(self, name)
176 self.values = list(values)
178 def visit(self, visitor, *args, **kwargs):
179 return visitor.visitEnum(self, *args, **kwargs)
182 def FakeEnum(type, values):
183 return Enum(type.expr, values)
190 def __init__(self, type, values):
191 Type.__init__(self, type.expr)
193 self.id = Bitmask.__id
199 def visit(self, visitor, *args, **kwargs):
200 return visitor.visitBitmask(self, *args, **kwargs)
207 def __init__(self, type, length):
208 Type.__init__(self, type.expr + " *")
212 def visit(self, visitor, *args, **kwargs):
213 return visitor.visitArray(self, *args, **kwargs)
218 def __init__(self, type, size):
219 Type.__init__(self, type.expr + ' *')
223 def visit(self, visitor, *args, **kwargs):
224 return visitor.visitBlob(self, *args, **kwargs)
231 def __init__(self, name, members):
232 Type.__init__(self, name)
234 self.id = Struct.__id
238 self.members = members
240 def visit(self, visitor, *args, **kwargs):
241 return visitor.visitStruct(self, *args, **kwargs)
246 def __init__(self, expr, type):
247 Type.__init__(self, expr)
250 def visit(self, visitor, *args, **kwargs):
251 return visitor.visitAlias(self, *args, **kwargs)
255 arg = Arg(type, name, output=True)
261 def __init__(self, type, name, output=False):
268 return '%s %s' % (self.type, self.name)
273 # 0-3 are reserved to memcpy, malloc, free, and realloc
276 def __init__(self, type, name, args, call = '', fail = None, sideeffects=True):
277 self.id = Function.__id
286 if not isinstance(arg, Arg):
287 if isinstance(arg, tuple):
288 arg_type, arg_name = arg
291 arg_name = "arg%u" % index
292 arg = Arg(arg_type, arg_name)
295 self.args.append(arg)
299 self.sideeffects = sideeffects
301 def prototype(self, name=None):
308 s = self.call + ' ' + s
309 if name.startswith('*'):
311 s = self.type.expr + ' ' + s
314 s += ", ".join(["%s %s" % (arg.type, arg.name) for arg in self.args])
321 return [arg.name for arg in self.args]
324 def StdFunction(*args, **kwargs):
325 kwargs.setdefault('call', '__stdcall')
326 return Function(*args, **kwargs)
329 def FunctionPointer(type, name, args, **kwargs):
330 # XXX: We should probably treat function pointers (callbacks or not) in a generic fashion
334 class Interface(Type):
336 def __init__(self, name, base=None):
337 Type.__init__(self, name)
342 def visit(self, visitor, *args, **kwargs):
343 return visitor.visitInterface(self, *args, **kwargs)
345 def iterMethods(self):
346 if self.base is not None:
347 for method in self.base.iterMethods():
349 for method in self.methods:
353 def iterBaseMethods(self):
354 if self.base is not None:
355 for iface, method in self.base.iterBaseMethods():
357 for method in self.methods:
362 class Method(Function):
364 def __init__(self, type, name, args, const=False):
365 Function.__init__(self, type, name, args, call = '__stdcall')
366 for index in range(len(self.args)):
367 self.args[index].index = index + 1
370 def prototype(self, name=None):
371 s = Function.prototype(self, name)
379 def __init__(self, expr = "char *", length = None):
380 Type.__init__(self, expr)
383 def visit(self, visitor, *args, **kwargs):
384 return visitor.visitString(self, *args, **kwargs)
386 # C string (i.e., zero terminated)
391 '''Opaque pointer.'''
393 def __init__(self, expr):
394 Type.__init__(self, expr)
396 def visit(self, visitor, *args, **kwargs):
397 return visitor.visitOpaque(self, *args, **kwargs)
400 def OpaquePointer(type, *args):
401 return Opaque(type.expr + ' *')
403 def OpaqueArray(type, size):
404 return Opaque(type.expr + ' *')
406 def OpaqueBlob(type, size):
407 return Opaque(type.expr + ' *')
410 class Polymorphic(Type):
412 def __init__(self, defaultType, switchExpr, switchTypes):
413 Type.__init__(self, defaultType.expr)
414 self.defaultType = defaultType
415 self.switchExpr = switchExpr
416 self.switchTypes = switchTypes
418 def visit(self, visitor, *args, **kwargs):
419 return visitor.visitPolymorphic(self, *args, **kwargs)
421 def iterSwitch(self):
422 cases = [['default']]
423 types = [self.defaultType]
425 for expr, type in self.switchTypes:
426 case = 'case %s' % expr
428 i = types.index(type)
433 cases[i].append(case)
435 return zip(cases, types)
439 '''Abstract visitor for the type hierarchy.'''
441 def visit(self, type, *args, **kwargs):
442 return type.visit(self, *args, **kwargs)
444 def visitVoid(self, void, *args, **kwargs):
445 raise NotImplementedError
447 def visitLiteral(self, literal, *args, **kwargs):
448 raise NotImplementedError
450 def visitString(self, string, *args, **kwargs):
451 raise NotImplementedError
453 def visitConst(self, const, *args, **kwargs):
454 raise NotImplementedError
456 def visitStruct(self, struct, *args, **kwargs):
457 raise NotImplementedError
459 def visitArray(self, array, *args, **kwargs):
460 raise NotImplementedError
462 def visitBlob(self, blob, *args, **kwargs):
463 raise NotImplementedError
465 def visitEnum(self, enum, *args, **kwargs):
466 raise NotImplementedError
468 def visitBitmask(self, bitmask, *args, **kwargs):
469 raise NotImplementedError
471 def visitPointer(self, pointer, *args, **kwargs):
472 raise NotImplementedError
474 def visitIntPointer(self, pointer, *args, **kwargs):
475 raise NotImplementedError
477 def visitLinearPointer(self, pointer, *args, **kwargs):
478 raise NotImplementedError
480 def visitHandle(self, handle, *args, **kwargs):
481 raise NotImplementedError
483 def visitAlias(self, alias, *args, **kwargs):
484 raise NotImplementedError
486 def visitOpaque(self, opaque, *args, **kwargs):
487 raise NotImplementedError
489 def visitInterface(self, interface, *args, **kwargs):
490 raise NotImplementedError
492 def visitPolymorphic(self, polymorphic, *args, **kwargs):
493 raise NotImplementedError
494 #return self.visit(polymorphic.defaultType, *args, **kwargs)
497 class OnceVisitor(Visitor):
498 '''Visitor that guarantees that each type is visited only once.'''
501 self.__visited = set()
503 def visit(self, type, *args, **kwargs):
504 if type not in self.__visited:
505 self.__visited.add(type)
506 return type.visit(self, *args, **kwargs)
510 class Rebuilder(Visitor):
511 '''Visitor which rebuild types as it visits them.
513 By itself it is a no-op -- it is intended to be overwritten.
516 def visitVoid(self, void):
519 def visitLiteral(self, literal):
522 def visitString(self, string):
525 def visitConst(self, const):
526 return Const(const.type)
528 def visitStruct(self, struct):
529 members = [(self.visit(type), name) for type, name in struct.members]
530 return Struct(struct.name, members)
532 def visitArray(self, array):
533 type = self.visit(array.type)
534 return Array(type, array.length)
536 def visitBlob(self, blob):
537 type = self.visit(blob.type)
538 return Blob(type, blob.size)
540 def visitEnum(self, enum):
543 def visitBitmask(self, bitmask):
544 type = self.visit(bitmask.type)
545 return Bitmask(type, bitmask.values)
547 def visitPointer(self, pointer):
548 type = self.visit(pointer.type)
551 def visitIntPointer(self, pointer):
554 def visitLinearPointer(self, pointer):
555 type = self.visit(pointer.type)
556 return LinearPointer(type, pointer.size)
558 def visitHandle(self, handle):
559 type = self.visit(handle.type)
560 return Handle(handle.name, type, range=handle.range, key=handle.key)
562 def visitAlias(self, alias):
563 type = self.visit(alias.type)
564 return Alias(alias.expr, type)
566 def visitOpaque(self, opaque):
569 def visitPolymorphic(self, polymorphic):
570 defaultType = self.visit(polymorphic.defaultType)
571 switchExpr = polymorphic.switchExpr
572 switchTypes = [(expr, self.visit(type)) for expr, type in polymorphic.switchTypes]
573 return Polymorphic(defaultType, switchExpr, switchTypes)
576 class Collector(Visitor):
577 '''Visitor which collects all unique types as it traverses them.'''
580 self.__visited = set()
583 def visit(self, type):
584 if type in self.__visited:
586 self.__visited.add(type)
587 Visitor.visit(self, type)
588 self.types.append(type)
590 def visitVoid(self, literal):
593 def visitLiteral(self, literal):
596 def visitString(self, string):
599 def visitConst(self, const):
600 self.visit(const.type)
602 def visitStruct(self, struct):
603 for type, name in struct.members:
606 def visitArray(self, array):
607 self.visit(array.type)
609 def visitBlob(self, array):
612 def visitEnum(self, enum):
615 def visitBitmask(self, bitmask):
616 self.visit(bitmask.type)
618 def visitPointer(self, pointer):
619 self.visit(pointer.type)
621 def visitIntPointer(self, pointer):
624 def visitLinearPointer(self, pointer):
625 self.visit(pointer.type)
627 def visitHandle(self, handle):
628 self.visit(handle.type)
630 def visitAlias(self, alias):
631 self.visit(alias.type)
633 def visitOpaque(self, opaque):
636 def visitInterface(self, interface):
637 if interface.base is not None:
638 self.visit(interface.base)
639 for method in interface.iterMethods():
640 for arg in method.args:
642 self.visit(method.type)
644 def visitPolymorphic(self, polymorphic):
645 self.visit(polymorphic.defaultType)
646 for expr, type in polymorphic.switchTypes:
653 Essentially, a collection of types, functions, and interfaces.
656 def __init__(self, name = None):
663 collector = Collector()
664 for function in self.functions:
665 for arg in function.args:
666 collector.visit(arg.type)
667 collector.visit(function.type)
668 for interface in self.interfaces:
669 collector.visit(interface)
670 for method in interface.iterMethods():
671 for arg in method.args:
672 collector.visit(arg.type)
673 collector.visit(method.type)
674 return collector.types
676 def addFunction(self, function):
677 self.functions.append(function)
679 def addFunctions(self, functions):
680 for function in functions:
681 self.addFunction(function)
683 def addInterface(self, interface):
684 self.interfaces.append(interface)
686 def addInterfaces(self, interfaces):
687 self.interfaces.extend(interfaces)
689 def addApi(self, api):
690 self.headers.extend(api.headers)
691 self.addFunctions(api.functions)
692 self.addInterfaces(api.interfaces)
694 def get_function_by_name(self, name):
695 for function in self.functions:
696 if function.name == name:
701 Bool = Literal("bool", "Bool")
702 SChar = Literal("signed char", "SInt")
703 UChar = Literal("unsigned char", "UInt")
704 Short = Literal("short", "SInt")
705 Int = Literal("int", "SInt")
706 Long = Literal("long", "SInt")
707 LongLong = Literal("long long", "SInt")
708 UShort = Literal("unsigned short", "UInt")
709 UInt = Literal("unsigned int", "UInt")
710 ULong = Literal("unsigned long", "UInt")
711 ULongLong = Literal("unsigned long long", "UInt")
712 Float = Literal("float", "Float")
713 Double = Literal("double", "Double")
714 SizeT = Literal("size_t", "UInt")
715 WString = Literal("wchar_t *", "WString")
717 Int8 = Literal("int8_t", "SInt")
718 UInt8 = Literal("uint8_t", "UInt")
719 Int16 = Literal("int16_t", "SInt")
720 UInt16 = Literal("uint16_t", "UInt")
721 Int32 = Literal("int32_t", "SInt")
722 UInt32 = Literal("uint32_t", "UInt")
723 Int64 = Literal("int64_t", "SInt")
724 UInt64 = Literal("uint64_t", "UInt")