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# Copyright 2019 The Chromium Authors
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
from .composition_parts import WithIdentifier
from .composition_parts import WithOwner
from .idl_type import IdlType
from .literal_constant import LiteralConstant
from .make_copy import make_copy
class Argument(WithIdentifier, WithOwner):
class IR(WithIdentifier):
def __init__(self, identifier, index, idl_type, default_value=None):
assert isinstance(index, int)
assert isinstance(idl_type, IdlType)
assert (default_value is None
or isinstance(default_value, LiteralConstant))
WithIdentifier.__init__(self, identifier)
self.index = index
self.idl_type = idl_type
self.default_value = default_value
def __init__(self, ir, owner):
assert isinstance(ir, Argument.IR)
ir = make_copy(ir)
WithIdentifier.__init__(self, ir.identifier)
WithOwner.__init__(self, owner)
self._index = ir.index
self._idl_type = ir.idl_type
self._default_value = ir.default_value
@property
def index(self):
"""Returns the argument index."""
return self._index
@property
def idl_type(self):
"""Returns the type of the argument."""
return self._idl_type
@property
def is_optional(self):
"""Returns True if this is an optional argument."""
return self.idl_type.is_optional
@property
def is_variadic(self):
"""Returns True if this is a variadic argument."""
return self.idl_type.is_variadic
@property
def optionality(self):
"""Returns the optionality value."""
return self.idl_type.optionality
@property
def default_value(self):
"""Returns the default value or None."""
return self._default_value
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