def ConstantValueFromKey(self, constant_key):
"""Takes a key into graph.resolved_constants referring to a
mojom declared_constant and returns a module.ConstantValue referring to the
module equivalent constant.
Args:
constant_key: {str} the constant key referring to a constant.
Returns:
{module.ConstantValue} translated.
"""
if constant_key in self._value_cache:
return self._value_cache[constant_key]
const_value = module.ConstantValue()
self._value_cache[constant_key] = const_value
const = self.ConstantFromKey(constant_key)
const_value.constant = const
const_value.name = const.name
const_value.parent_kind = const.parent_kind
self.PopulateModuleOrImportedFrom(
const_value, self._graph.resolved_constants[constant_key])
const_value.namespace = const_value.module.namespace
return const_value
def ConstantFromData(module, data, parent_kind):
constant = mojom.Constant()
constant.name = data['name']
if parent_kind:
scope = (module.namespace, parent_kind.name)
else:
scope = (module.namespace, )
# TODO(mpcomplete): maybe we should only support POD kinds.
constant.kind = KindFromData(module.kinds, data['kind'], scope)
constant.value = FixupExpression(module, data.get('value'), scope, None)
value = mojom.ConstantValue(module, parent_kind, constant)
module.values[value.GetSpec()] = value
return constant
def ConstantValueFromValueKey(self, value_key):
"""Takes a value key into graph.resolved_values referring to a declared
constant and returns the module equivalent.
Args:
value_key: {str} the value key referring to the value to be returned.
Returns:
{module.ConstantValue} translated.
"""
const_value = module.ConstantValue()
self._value_cache[value_key] = const_value
const = self.ConstantFromValueKey(value_key)
const_value.constant = const
const_value.name = const.name
const_value.parent_kind = const.parent_kind
self.PopulateModuleOrImportedFrom(const_value,
self._graph.resolved_values[value_key].declared_constant)
const_value.namespace = const_value.module.namespace
return const_value
def _Constant(module, parsed_const, parent_kind):
"""
Args:
module: {mojom.Module} Module currently being constructed.
parsed_const: {ast.Const} Parsed constant.
Returns:
{mojom.Constant} AST constant.
"""
constant = mojom.Constant()
constant.mojom_name = parsed_const.mojom_name
if parent_kind:
scope = (module.mojom_namespace, parent_kind.mojom_name)
else:
scope = (module.mojom_namespace, )
# TODO(mpcomplete): maybe we should only support POD kinds.
constant.kind = _Kind(module.kinds, _MapKind(parsed_const.typename), scope)
constant.parent_kind = parent_kind
constant.value = _FixupExpression(module, parsed_const.value, scope, None)
value = mojom.ConstantValue(module, parent_kind, constant)
module.values[value.GetSpec()] = value
return constant
