mirror of
https://github.com/flutter/flutter.git
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6bcc09dbd0
Remove all code relating to shadow trees, insertion points, shadow boundaries, traversing composed trees, distribution, template documents, custom elements, registering elements, element registries, element factories, shadow roots, etc. Remove the following features from the IDLs and from the binding generators: CustomElementCallbacks, Reflect*, EventHandler. Remove the CSS custom pseudo-element concept, since we no longer have a UA style sheet worth talking about, no longer have shadow trees or custom elements, no longer use pseudo-elements, and generally therefore don't use this code at all.
264 lines
11 KiB
Python
264 lines
11 KiB
Python
# Copyright (C) 2013 Google Inc. All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are
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# met:
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#
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# * Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# * Redistributions in binary form must reproduce the above
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# copyright notice, this list of conditions and the following disclaimer
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# in the documentation and/or other materials provided with the
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# distribution.
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# * Neither the name of Google Inc. nor the names of its
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# contributors may be used to endorse or promote products derived from
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# this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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"""Generate template values for attributes.
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Extends IdlType with property |constructor_type_name|.
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Design doc: http://www.chromium.org/developers/design-documents/idl-compiler
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"""
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import idl_types
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import dart_types
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from dart_utilities import DartUtilities
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from v8_globals import interfaces
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import v8_attributes
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def attribute_context(interface, attribute):
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# Call v8's implementation.
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context = v8_attributes.attribute_context(interface, attribute)
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extended_attributes = attribute.extended_attributes
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# Augment's Dart's information to context.
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idl_type = attribute.idl_type
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base_idl_type = idl_type.base_type
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# TODO(terry): Work around for DOMString[] base should be IDLTypeArray
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if base_idl_type == None:
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# Returns Array or Sequence.
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base_idl_type = idl_type.inner_name
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# [Custom]
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has_custom_getter = ('Custom' in extended_attributes and
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extended_attributes['Custom'] in [None, 'Getter'])
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has_custom_setter = (not attribute.is_read_only and
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(('Custom' in extended_attributes and
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extended_attributes['Custom'] in [None, 'Setter'])))
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is_call_with_script_state = DartUtilities.has_extended_attribute_value(attribute, 'CallWith', 'ScriptState')
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is_auto_scope = not 'DartNoAutoScope' in extended_attributes
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context.update({
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'has_custom_getter': has_custom_getter,
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'has_custom_setter': has_custom_setter,
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'is_auto_scope': is_auto_scope, # Used internally (outside of templates).
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'is_call_with_script_state': is_call_with_script_state,
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'auto_scope': DartUtilities.bool_to_cpp(is_auto_scope),
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'dart_type': dart_types.idl_type_to_dart_type(idl_type),
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})
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if v8_attributes.is_constructor_attribute(attribute):
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v8_attributes.constructor_getter_context(interface, attribute, context)
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return context
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if not v8_attributes.has_custom_getter(attribute):
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getter_context(interface, attribute, context)
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if (not attribute.is_read_only):
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# FIXME: We did not previously support the PutForwards attribute, so I am
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# disabling it here for now to get things compiling.
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# We may wish to revisit this.
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# if (not has_custom_setter(attribute) and
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# (not attribute.is_read_only or 'PutForwards' in extended_attributes)):
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setter_context(interface, attribute, context)
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native_entry_getter = \
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DartUtilities.generate_native_entry(
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interface.name, attribute.name, 'Getter', attribute.is_static, 0)
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native_entry_setter = \
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DartUtilities.generate_native_entry(
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interface.name, attribute.name, 'Setter', attribute.is_static, 1)
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context.update({
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'native_entry_getter': native_entry_getter,
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'native_entry_setter': native_entry_setter,
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})
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return context
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################################################################################
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# Getter
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################################################################################
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def getter_context(interface, attribute, context):
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v8_attributes.getter_context(interface, attribute, context)
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idl_type = attribute.idl_type
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base_idl_type = idl_type.base_type
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extended_attributes = attribute.extended_attributes
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cpp_value = getter_expression(interface, attribute, context)
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# Normally we can inline the function call into the return
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# statement to avoid the overhead of using a Ref<> temporary, but
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# for some cases (nullable types, [CachedAttribute], or if there
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# are exceptions), we need to use a local variable.
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# FIXME: check if compilers are smart enough to inline this, and if so,
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# always use a local variable (for readability and CG simplicity).
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release = False
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if (idl_type.is_nullable or
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'CachedAttribute' in extended_attributes or
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context['is_getter_raises_exception']):
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context['cpp_value_original'] = cpp_value
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cpp_value = 'result'
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if idl_type.is_interface_type:
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release = True
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dart_set_return_value = \
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idl_type.dart_set_return_value(cpp_value,
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extended_attributes=extended_attributes,
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script_wrappable='impl',
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release=release,
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for_main_world=False,
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auto_scope=context['is_auto_scope'])
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context.update({
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'cpp_value': cpp_value,
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'dart_set_return_value': dart_set_return_value,
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})
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def getter_expression(interface, attribute, context):
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v8_attributes.getter_expression(interface, attribute, context)
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arguments = []
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this_getter_base_name = v8_attributes.getter_base_name(interface, attribute, arguments)
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getter_name = DartUtilities.scoped_name(interface, attribute, this_getter_base_name)
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arguments.extend(DartUtilities.call_with_arguments(
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attribute.extended_attributes.get('CallWith')))
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if ('PartialInterfaceImplementedAs' in attribute.extended_attributes and
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not attribute.is_static):
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# Pass by reference.
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arguments.append('*receiver')
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if attribute.idl_type.is_explicit_nullable:
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arguments.append('is_null')
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if context['is_getter_raises_exception']:
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arguments.append('es')
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return '%s(%s)' % (getter_name, ', '.join(arguments))
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################################################################################
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# Setter
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################################################################################
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def setter_context(interface, attribute, context):
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v8_attributes.setter_context(interface, attribute, context)
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def target_attribute():
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target_interface_name = attribute.idl_type.base_type
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target_attribute_name = extended_attributes['PutForwards']
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target_interface = interfaces[target_interface_name]
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try:
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return next(attribute
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for attribute in target_interface.attributes
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if attribute.name == target_attribute_name)
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except StopIteration:
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raise Exception('[PutForward] target not found:\n'
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'Attribute "%s" is not present in interface "%s"' %
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(target_attribute_name, target_interface_name))
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extended_attributes = attribute.extended_attributes
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if 'PutForwards' in extended_attributes:
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# Use target attribute in place of original attribute
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attribute = target_attribute()
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this_cpp_type = 'DartStringAdapter'
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else:
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this_cpp_type = context['cpp_type']
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idl_type = attribute.idl_type
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context.update({
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'has_setter_exception_state': (
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context['is_setter_raises_exception'] or context['has_type_checking_interface'] or
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idl_type.is_integer_type),
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'setter_lvalue': dart_types.check_reserved_name(attribute.name),
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'cpp_type': this_cpp_type,
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'local_cpp_type': idl_type.cpp_type_args(attribute.extended_attributes, raw_type=True),
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'dart_value_to_local_cpp_value':
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attribute.idl_type.dart_value_to_local_cpp_value(
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extended_attributes, attribute.name, False,
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context['has_type_checking_interface'], 1,
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context['is_auto_scope']),
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})
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# setter_expression() depends on context values we set above.
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context['cpp_setter'] = setter_expression(interface, attribute, context)
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def setter_expression(interface, attribute, context):
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extended_attributes = attribute.extended_attributes
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arguments = DartUtilities.call_with_arguments(
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extended_attributes.get('SetterCallWith') or
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extended_attributes.get('CallWith'))
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this_setter_base_name = v8_attributes.setter_base_name(interface, attribute, arguments)
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setter_name = DartUtilities.scoped_name(interface, attribute, this_setter_base_name)
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if ('PartialInterfaceImplementedAs' in extended_attributes and
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not attribute.is_static):
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arguments.append('*receiver')
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idl_type = attribute.idl_type
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attribute_name = dart_types.check_reserved_name(attribute.name)
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arguments.append(attribute_name)
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if context['is_setter_raises_exception']:
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arguments.append('es')
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return '%s(%s)' % (setter_name, ', '.join(arguments))
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################################################################################
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# Attribute configuration
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################################################################################
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# [Replaceable]
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def setter_callback_name(interface, attribute):
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cpp_class_name = DartUtilities.cpp_name(interface)
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extended_attributes = attribute.extended_attributes
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if (('Replaceable' in extended_attributes and
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'PutForwards' not in extended_attributes) or
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v8_attributes.is_constructor_attribute(attribute)):
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# FIXME: rename to ForceSetAttributeOnThisCallback, since also used for Constructors
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return '{0}V8Internal::{0}ReplaceableAttributeSetterCallback'.format(cpp_class_name)
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# FIXME:disabling PutForwards for now since we didn't support it before
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# if attribute.is_read_only and 'PutForwards' not in extended_attributes:
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if attribute.is_read_only:
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return '0'
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return '%sV8Internal::%sAttributeSetterCallback' % (cpp_class_name, attribute.name)
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################################################################################
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# Constructors
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################################################################################
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idl_types.IdlType.constructor_type_name = property(
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# FIXME: replace this with a [ConstructorAttribute] extended attribute
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lambda self: DartUtilities.strip_suffix(self.base_type, 'Constructor'))
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