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de93d90cda
Nothing in heap/ is called anymore, but it still has its claws deep into many of the base classes for the rest of Sky, so I've left the (largely unmodified) headers for now. We'll trim the headers further in later patches. R=abarth@chromium.org Review URL: https://codereview.chromium.org/681963002
132 lines
5.1 KiB
Python
132 lines
5.1 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 a callback interface.
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Extends IdlTypeBase with property |callback_cpp_type|.
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Design doc: http://www.chromium.org/developers/design-documents/idl-compiler
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"""
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from idl_types import IdlTypeBase
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from v8_globals import includes
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import v8_types
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import v8_utilities
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CALLBACK_INTERFACE_H_INCLUDES = frozenset([
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'bindings/core/v8/ActiveDOMCallback.h',
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'bindings/core/v8/DOMWrapperWorld.h',
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'bindings/core/v8/ScopedPersistent.h',
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])
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CALLBACK_INTERFACE_CPP_INCLUDES = frozenset([
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'bindings/core/v8/ScriptController.h',
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'bindings/core/v8/V8Binding.h',
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'core/dom/ExecutionContext.h',
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'wtf/Assertions.h',
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'wtf/GetPtr.h',
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'wtf/RefPtr.h',
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])
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def cpp_type(idl_type):
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# FIXME: remove this function by making callback types consistent
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# (always use usual v8_types.cpp_type)
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idl_type_name = idl_type.name
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if idl_type_name == 'String':
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return 'const String&'
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if idl_type_name == 'void':
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return 'void'
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# Callbacks use raw pointers, so raw_type=True
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raw_cpp_type = idl_type.cpp_type_args(raw_type=True)
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if raw_cpp_type.startswith(('Vector', 'Vector')):
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return 'const %s&' % raw_cpp_type
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return raw_cpp_type
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IdlTypeBase.callback_cpp_type = property(cpp_type)
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def callback_interface_context(callback_interface):
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includes.clear()
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includes.update(CALLBACK_INTERFACE_CPP_INCLUDES)
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return {
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'conditional_string': v8_utilities.conditional_string(callback_interface),
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'cpp_class': callback_interface.name,
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'v8_class': v8_utilities.v8_class_name(callback_interface),
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'header_includes': set(CALLBACK_INTERFACE_H_INCLUDES),
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'methods': [method_context(operation)
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for operation in callback_interface.operations],
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}
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def add_includes_for_operation(operation):
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operation.idl_type.add_includes_for_type()
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for argument in operation.arguments:
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argument.idl_type.add_includes_for_type()
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def method_context(operation):
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extended_attributes = operation.extended_attributes
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idl_type = operation.idl_type
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idl_type_str = str(idl_type)
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if idl_type_str not in ['boolean', 'void']:
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raise Exception('We only support callbacks that return boolean or void values.')
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is_custom = 'Custom' in extended_attributes
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if not is_custom:
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add_includes_for_operation(operation)
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call_with = extended_attributes.get('CallWith')
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call_with_this_handle = v8_utilities.extended_attribute_value_contains(call_with, 'ThisValue')
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context = {
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'call_with_this_handle': call_with_this_handle,
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'cpp_type': idl_type.callback_cpp_type,
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'idl_type': idl_type_str,
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'is_custom': is_custom,
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'name': operation.name,
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}
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context.update(arguments_context(operation.arguments,
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call_with_this_handle))
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return context
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def arguments_context(arguments, call_with_this_handle):
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def argument_context(argument):
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return {
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'handle': '%sHandle' % argument.name,
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'cpp_value_to_v8_value': argument.idl_type.cpp_value_to_v8_value(
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argument.name, isolate='m_scriptState->isolate()',
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creation_context='m_scriptState->context()->Global()'),
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}
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argument_declarations = ['ScriptValue thisValue'] if call_with_this_handle else []
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argument_declarations.extend(
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'%s %s' % (argument.idl_type.callback_cpp_type, argument.name)
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for argument in arguments)
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return {
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'argument_declarations': argument_declarations,
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'arguments': [argument_context(argument) for argument in arguments],
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}
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