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# Copyright 2021 The Chromium Authors
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
"""
Here are rule classes which validate whether constants violate the rules
described in Web IDL https://webidl.spec.whatwg.org/.
Each rule class must inherit RuleBase.
"""
from validator.framework import RuleBase
from validator.framework import target
class IncompatibleTypeWithConstantValue(RuleBase):
def validate(self, assert_, constant):
assert_(constant.value.is_type_compatible_with(constant.idl_type),
"The constant value {} is incompatible with the type `{}`.",
constant.value.literal, constant.idl_type.type_name)
class IncompatibleTypeWithDefaultValue(RuleBase):
def validate(self, assert_, target_object):
if target_object.default_value:
assert_(
target_object.default_value.is_type_compatible_with(
target_object.idl_type),
"The default value {} is incompatible with the type `{}`.",
target_object.default_value.literal,
target_object.idl_type.type_name)
class ForbiddenSequenceTypeForConstants(RuleBase):
def validate(self, assert_, constant):
assert_(not constant.idl_type.unwrap().is_sequence,
"Sequences must not be used as the type of a constant.")
class ForbiddenRecordTypeForConstants(RuleBase):
def validate(self, assert_, constant):
assert_(not constant.idl_type.unwrap().is_record,
"Records must not be used as the type of a constant.")
class ForbiddenDictionaryTypeForConstants(RuleBase):
def validate(self, assert_, constant):
assert_(not constant.idl_type.unwrap().is_dictionary,
"Dictionaries must not be used as the type of a constant.")
class ForbiddenObservableArrayTypeForConstants(RuleBase):
def validate(self, assert_, constant):
assert_(
not constant.idl_type.unwrap().is_observable_array,
"Observable arrays must not be used as the type of a constant.")
def register_rules(rule_store):
rule_store.register(target.CONSTANTS, IncompatibleTypeWithConstantValue())
rule_store.register(target.ARGUMENTS, IncompatibleTypeWithDefaultValue())
rule_store.register(target.DICTIONARY_MEMBERS,
IncompatibleTypeWithDefaultValue())
rule_store.register(target.CONSTANTS, ForbiddenSequenceTypeForConstants())
rule_store.register(target.CONSTANTS, ForbiddenRecordTypeForConstants())
rule_store.register(target.CONSTANTS,
ForbiddenDictionaryTypeForConstants())
rule_store.register(target.CONSTANTS,
ForbiddenObservableArrayTypeForConstants())
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