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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.
import posixpath
from .code_generator_info import CodeGeneratorInfo
from .code_generator_info import CodeGeneratorInfoMutable
from .exposure import Exposure
from .exposure import ExposureMutable
from .extended_attribute import ExtendedAttributes
from .extended_attribute import ExtendedAttributesMutable
class Identifier(str):
pass
class WithIdentifier(object):
"""Implements |identifier| as a readonly attribute."""
def __init__(self, identifier):
if isinstance(identifier, WithIdentifier):
identifier = identifier.identifier
assert isinstance(identifier, Identifier)
self._identifier = identifier
@property
def identifier(self):
return self._identifier
def change_identifier(self, new_identifier):
assert isinstance(new_identifier, Identifier)
self._identifier = new_identifier
class WithExtendedAttributes(object):
"""Implements |extended_attributes| as a readonly attribute."""
def __init__(self, extended_attributes=None, readonly=False):
if isinstance(extended_attributes, WithExtendedAttributes):
extended_attributes = extended_attributes.extended_attributes
elif extended_attributes is None:
extended_attributes = ExtendedAttributes()
assert isinstance(extended_attributes, ExtendedAttributes)
if readonly:
self._extended_attributes = ExtendedAttributes(extended_attributes)
else:
self._extended_attributes = ExtendedAttributesMutable(
extended_attributes)
@property
def extended_attributes(self):
return self._extended_attributes
class WithCodeGeneratorInfo(object):
"""Implements |code_generator_info| as a readonly attribute."""
def __init__(self, code_generator_info=None, readonly=False):
if isinstance(code_generator_info, WithCodeGeneratorInfo):
code_generator_info = code_generator_info.code_generator_info
elif code_generator_info is None:
code_generator_info = CodeGeneratorInfoMutable()
assert isinstance(code_generator_info, CodeGeneratorInfo)
assert isinstance(readonly, bool)
if readonly:
self._code_generator_info = CodeGeneratorInfo(code_generator_info)
else:
self._code_generator_info = code_generator_info
@property
def code_generator_info(self):
return self._code_generator_info
class WithExposure(object):
"""Implements |exposure| as a readonly attribute."""
def __init__(self, exposure=None, readonly=False):
if isinstance(exposure, WithExposure):
exposure = exposure.exposure
elif exposure is None:
exposure = ExposureMutable()
assert isinstance(exposure, Exposure)
assert isinstance(readonly, bool)
if readonly:
self._exposure = Exposure(exposure)
else:
self._exposure = exposure
@property
def exposure(self):
return self._exposure
class Component(str):
"""
Represents a component that is a Blink-specific layering concept, such as
'core' and 'modules'.
"""
class WithComponent(object):
"""
Implements |components| as a readonly attribute.
A single IDL definition such as 'interface' may consist from multiple IDL
fragments like partial interfaces and mixins, which may exist across
Blink components. |components| is a list of Blink components of IDL
fragments that are involved into this object.
"""
def __init__(self, component, readonly=False):
if isinstance(component, WithComponent):
components = component._components
elif isinstance(component, Component):
components = [component]
else:
components = component
assert (isinstance(components, (list, tuple)) and all(
isinstance(component, Component) for component in components))
assert isinstance(readonly, bool)
if readonly:
self._components = tuple(components)
else:
self._components = components
@property
def components(self):
return self._components
def add_components(self, components):
assert isinstance(components, (list, tuple)) and all(
isinstance(component, Component) for component in components)
for component in components:
if component not in self._components:
self._components.append(component)
class Location(object):
_blink_path_prefix = posixpath.sep + posixpath.join(
'third_party', 'blink', 'renderer', '')
def __init__(self, filepath=None, line_number=None, position=None):
assert filepath is None or isinstance(filepath, str)
assert line_number is None or isinstance(line_number, int)
assert position is None or isinstance(position, int)
# idl_parser produces paths based on the working directory, which may
# not be the project root directory, e.g. "../../third_party/blink/...".
# Canonicalize the paths heuristically.
if filepath is not None:
index = filepath.find(self._blink_path_prefix)
if index >= 0:
filepath = filepath[index + 1:]
self._filepath = filepath
self._line_number = line_number
self._position = position # Position number in a file
def __str__(self):
text = '{}'.format(self._filepath or '<<unknown path>>')
if self._line_number:
text += ':{}'.format(self._line_number)
return text
@property
def filepath(self):
return self._filepath
@property
def line_number(self):
return self._line_number
@property
def position_in_file(self):
return self._position
class DebugInfo(object):
"""Provides information useful for debugging."""
def __init__(self, location=None):
assert location is None or isinstance(location, Location)
# The first entry is the primary location, e.g. location of non-partial
# interface. The rest is secondary locations, e.g. location of partial
# interfaces and mixins.
self._locations = [location] if location else []
@property
def location(self):
"""
Returns the primary location, i.e. location of the main definition.
"""
return self._locations[0] if self._locations else Location()
@property
def all_locations(self):
"""
Returns a list of locations of all related IDL definitions, including
partial definitions and mixins.
"""
return tuple(self._locations)
def add_locations(self, locations):
assert isinstance(locations, (list, tuple)) and all(
isinstance(location, Location) for location in locations)
self._locations.extend(locations)
class WithDebugInfo(object):
"""Implements |debug_info| as a readonly attribute."""
def __init__(self, debug_info=None):
if isinstance(debug_info, WithDebugInfo):
debug_info = debug_info.debug_info
elif debug_info is None:
debug_info = DebugInfo()
assert isinstance(debug_info, DebugInfo)
self._debug_info = debug_info
@property
def debug_info(self):
return self._debug_info
class WithOwner(object):
"""Implements |owner| as a readonly attribute."""
def __init__(self, owner):
assert isinstance(owner, object) and owner is not None
self._owner = owner
@property
def owner(self):
return self._owner
class WithOwnerMixin(object):
"""Implements |owner_mixin| as a readonly attribute."""
def __init__(self, owner_mixin=None):
if isinstance(owner_mixin, WithOwnerMixin):
owner_mixin = owner_mixin._owner_mixin
from .reference import RefById
assert owner_mixin is None or isinstance(owner_mixin, RefById)
self._owner_mixin = owner_mixin
@property
def owner_mixin(self):
"""
Returns the interface mixin object where this construct was originally
defined.
"""
return self._owner_mixin.target_object if self._owner_mixin else None
def set_owner_mixin(self, mixin):
from .reference import RefById
assert isinstance(mixin, RefById)
assert self._owner_mixin is None
self._owner_mixin = mixin
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