class Type:
+ """Base class for all types."""
- __all = {}
- __seq = 0
+ __tags = set()
- def __init__(self, expr, id = ''):
+ def __init__(self, expr, tag = None):
self.expr = expr
-
- for char in id:
- assert char.isalnum() or char in '_ '
- id = id.replace(' ', '_')
-
- if id in Type.__all:
- Type.__seq += 1
- id += str(Type.__seq)
-
- assert id not in Type.__all
- Type.__all[id] = self
+ # Generate a default tag, used when naming functions that will operate
+ # on this type, so it should preferrably be something representative of
+ # the type.
+ if tag is None:
+ tag = ''.join([c for c in expr if c.isalnum() or c in '_'])
+ else:
+ for c in tag:
+ assert c.isalnum() or c in '_'
+
+ # Ensure it is unique.
+ if tag in Type.__tags:
+ suffix = 1
+ while tag + str(suffix) in Type.__tags:
+ suffix += 1
+ tag += str(suffix)
- self.id = id
+ assert tag not in Type.__tags
+ Type.__tags.add(tag)
+
+ self.tag = tag
def __str__(self):
+ """Return the C/C++ type expression for this type."""
return self.expr
def visit(self, visitor, *args, **kwargs):
class _Void(Type):
+ """Singleton void type."""
def __init__(self):
Type.__init__(self, "void")
# The most legible
expr = "const " + type.expr
- Type.__init__(self, expr, 'C' + type.id)
+ Type.__init__(self, expr, 'C' + type.tag)
self.type = type
class Pointer(Type):
def __init__(self, type):
- Type.__init__(self, type.expr + " *", 'P' + type.id)
+ Type.__init__(self, type.expr + " *", 'P' + type.tag)
self.type = type
def visit(self, visitor, *args, **kwargs):
class Handle(Type):
def __init__(self, name, type, range=None, key=None):
- Type.__init__(self, type.expr, 'P' + type.id)
+ Type.__init__(self, type.expr, 'P' + type.tag)
self.name = name
self.type = type
self.range = range
class Enum(Type):
+ __id = 0
+
def __init__(self, name, values):
Type.__init__(self, name)
+
+ self.id = Enum.__id
+ Enum.__id += 1
+
self.values = list(values)
-
+
def visit(self, visitor, *args, **kwargs):
return visitor.visit_enum(self, *args, **kwargs)
class Bitmask(Type):
+ __id = 0
+
def __init__(self, type, values):
Type.__init__(self, type.expr)
+
+ self.id = Bitmask.__id
+ Bitmask.__id += 1
+
self.type = type
self.values = values
class Struct(Type):
+ __id = 0
+
def __init__(self, name, members):
Type.__init__(self, name)
+
+ self.id = Struct.__id
+ Struct.__id += 1
+
self.name = name
self.members = members