Remove unused V8 integration code in Sky

sky/engine/bindings/scripts/v8_utilities.py

-# Copyright (C) 2013 Google Inc. All rights reserved.
-#
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions are
-# met:
-#
-#     * Redistributions of source code must retain the above copyright
-# notice, this list of conditions and the following disclaimer.
-#     * Redistributions in binary form must reproduce the above
-# copyright notice, this list of conditions and the following disclaimer
-# in the documentation and/or other materials provided with the
-# distribution.
-#     * Neither the name of Google Inc. nor the names of its
-# contributors may be used to endorse or promote products derived from
-# this software without specific prior written permission.
-#
-# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-"""Functions shared by various parts of the code generator.
-
-Extends IdlTypeBase type with |enum_validation_expression| property.
-
-Design doc: http://www.chromium.org/developers/design-documents/idl-compiler
-"""
-
-import re
-
-from idl_types import IdlTypeBase
-import idl_types
-from v8_globals import includes
-import v8_types
-
-ACRONYMS = [
-    'CSSOM',  # must come *before* CSS to match full acronym
-    'CSS',
-    'HTML',
-    'IME',
-    'JS',
-    'SVG',
-    'URL',
-    'WOFF',
-    'XML',
-    'XSLT',
-]
-
-
-################################################################################
-# Extended attribute parsing
-################################################################################
-
-def extended_attribute_value_contains(extended_attribute_value, key):
-    return (extended_attribute_value == key or
-            (isinstance(extended_attribute_value, list) and
-             key in extended_attribute_value))
-
-
-def has_extended_attribute(definition_or_member, extended_attribute_list):
-    return any(extended_attribute in definition_or_member.extended_attributes
-               for extended_attribute in extended_attribute_list)
-
-
-def has_extended_attribute_value(definition_or_member, name, value):
-    extended_attributes = definition_or_member.extended_attributes
-    return (name in extended_attributes and
-            extended_attribute_value_contains(extended_attributes[name], value))
-
-
-def extended_attribute_value_as_list(definition_or_member, name):
-    extended_attributes = definition_or_member.extended_attributes
-    if name not in extended_attributes:
-        return None
-    value = extended_attributes[name]
-    if isinstance(value, list):
-        return value
-    return [value]
-
-
-################################################################################
-# String handling
-################################################################################
-
-def capitalize(name):
-    """Capitalize first letter or initial acronym (used in setter names)."""
-    for acronym in ACRONYMS:
-        if name.startswith(acronym.lower()):
-            return name.replace(acronym.lower(), acronym)
-    return name[0].upper() + name[1:]
-
-
-def strip_suffix(string, suffix):
-    if not suffix or not string.endswith(suffix):
-        return string
-    return string[:-len(suffix)]
-
-
-def uncapitalize(name):
-    """Uncapitalizes first letter or initial acronym (used in method names).
-
-    E.g., 'SetURL' becomes 'setURL', but 'URLFoo' becomes 'urlFoo'.
-    """
-    for acronym in ACRONYMS:
-        if name.startswith(acronym):
-            return name.replace(acronym, acronym.lower())
-    return name[0].lower() + name[1:]
-
-
-################################################################################
-# C++
-################################################################################
-
-def enum_validation_expression(idl_type):
-    # FIXME: Add IdlEnumType, move property to derived type, and remove this check
-    if not idl_type.is_enum:
-        return None
-    return ' || '.join(['string == "%s"' % enum_value
-                        for enum_value in idl_type.enum_values])
-IdlTypeBase.enum_validation_expression = property(enum_validation_expression)
-
-
-def scoped_name(interface, definition, base_name):
-    if 'ImplementedInPrivateScript' in definition.extended_attributes:
-        return '%s::PrivateScript::%s' % (v8_class_name(interface), base_name)
-    # partial interfaces are implemented as separate classes, with their members
-    # implemented as static member functions
-    partial_interface_implemented_as = definition.extended_attributes.get('PartialInterfaceImplementedAs')
-    if partial_interface_implemented_as:
-        return '%s::%s' % (partial_interface_implemented_as, base_name)
-    if (definition.is_static or
-        definition.name in ('Constructor', 'NamedConstructor')):
-        return '%s::%s' % (cpp_name(interface), base_name)
-    return 'impl->%s' % base_name
-
-
-def v8_class_name(interface):
-    return v8_types.v8_type(interface.name)
-
-
-################################################################################
-# Specific extended attributes
-################################################################################
-
-# [ActivityLogging]
-def activity_logging_world_list(member, access_type=''):
-    """Returns a set of world suffixes for which a definition member has activity logging, for specified access type.
-
-    access_type can be 'Getter' or 'Setter' if only checking getting or setting.
-    """
-    extended_attributes = member.extended_attributes
-    if 'LogActivity' not in extended_attributes:
-        return set()
-    log_activity = extended_attributes['LogActivity']
-    if log_activity and not log_activity.startswith(access_type):
-        return set()
-
-    includes.add('bindings/core/v8/V8DOMActivityLogger.h')
-    if 'LogAllWorlds' in extended_attributes:
-        return set(['', 'ForMainWorld'])
-    return set([''])  # At minimum, include isolated worlds.
-
-
-# [ActivityLogging]
-def activity_logging_world_check(member):
-    """Returns if an isolated world check is required when generating activity
-    logging code.
-
-    The check is required when there is no per-world binding code and logging is
-    required only for isolated world.
-    """
-    extended_attributes = member.extended_attributes
-    if 'LogActivity' not in extended_attributes:
-        return False
-    if ('PerWorldBindings' not in extended_attributes and
-        'LogAllWorlds' not in extended_attributes):
-        return True
-    return False
-
-
-# [CallWith]
-CALL_WITH_ARGUMENTS = {
-    'ScriptState': 'scriptState',
-    'ExecutionContext': 'executionContext',
-    'ScriptArguments': 'scriptArguments.release()',
-    'ActiveWindow': 'callingDOMWindow(info.GetIsolate())',
-    'FirstWindow': 'enteredDOMWindow(info.GetIsolate())',
-    'Document': 'document',
-}
-# List because key order matters, as we want arguments in deterministic order
-CALL_WITH_VALUES = [
-    'ScriptState',
-    'ExecutionContext',
-    'ScriptArguments',
-    'ActiveWindow',
-    'FirstWindow',
-    'Document',
-]
-
-
-def call_with_arguments(call_with_values):
-    if not call_with_values:
-        return []
-    return [CALL_WITH_ARGUMENTS[value]
-            for value in CALL_WITH_VALUES
-            if extended_attribute_value_contains(call_with_values, value)]
-
-
-# [Conditional]
-DELIMITER_TO_OPERATOR = {
-    '|': '||',
-    ',': '&&',
-}
-
-
-def conditional_string(definition_or_member):
-    extended_attributes = definition_or_member.extended_attributes
-    if 'Conditional' not in extended_attributes:
-        return None
-    return 'ENABLE(%s)' % extended_attributes['Conditional']
-
-
-# [DeprecateAs]
-def deprecate_as(member):
-    extended_attributes = member.extended_attributes
-    if 'DeprecateAs' not in extended_attributes:
-        return None
-    return extended_attributes['DeprecateAs']
-
-
-# [Exposed]
-EXPOSED_EXECUTION_CONTEXT_METHOD = {
-    'Window': 'isDocument',
-}
-
-
-def exposed(definition_or_member, interface):
-    exposure_set = extended_attribute_value_as_list(definition_or_member, 'Exposed')
-    if not exposure_set:
-        return None
-
-    interface_exposure_set = expanded_exposure_set_for_interface(interface)
-
-    # Methods must not be exposed to a broader scope than their interface.
-    if not set(exposure_set).issubset(interface_exposure_set):
-        raise ValueError('Interface members\' exposure sets must be a subset of the interface\'s.')
-
-    exposure_checks = []
-    for environment in exposure_set:
-        # Methods must be exposed on one of the scopes known to Blink.
-        if environment not in EXPOSED_EXECUTION_CONTEXT_METHOD:
-            raise ValueError('Values for the [Exposed] annotation must reflect to a valid exposure scope.')
-
-        exposure_checks.append('context->%s()' % EXPOSED_EXECUTION_CONTEXT_METHOD[environment])
-
-    return ' || '.join(exposure_checks)
-
-
-def expanded_exposure_set_for_interface(interface):
-    exposure_set = extended_attribute_value_as_list(interface, 'Exposed')
-    return sorted(set(exposure_set))
-
-
-# [ImplementedAs]
-def cpp_name(definition_or_member):
-    extended_attributes = definition_or_member.extended_attributes
-    if 'ImplementedAs' not in extended_attributes:
-        return definition_or_member.name
-    return extended_attributes['ImplementedAs']
-
-
-# [MeasureAs]
-def measure_as(definition_or_member):
-    extended_attributes = definition_or_member.extended_attributes
-    if 'MeasureAs' not in extended_attributes:
-        return None
-    return extended_attributes['MeasureAs']
-
-
-# [RuntimeEnabled]
-def runtime_enabled_function_name(definition_or_member):
-    """Returns the name of the RuntimeEnabledFeatures function.
-
-    The returned function checks if a method/attribute is enabled.
-    Given extended attribute RuntimeEnabled=FeatureName, return:
-        RuntimeEnabledFeatures::{featureName}Enabled
-    """
-    extended_attributes = definition_or_member.extended_attributes
-    if 'RuntimeEnabled' not in extended_attributes:
-        return None
-    feature_name = extended_attributes['RuntimeEnabled']
-    return 'RuntimeEnabledFeatures::%sEnabled' % uncapitalize(feature_name)