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# Copyright 2022 The Chromium Authors
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
"""Ensure no duplicate type definitions before generation."""
import mojom.generate.check as check
import mojom.generate.module as module
class Check(check.Check):
def __init__(self, *args, **kwargs):
super(Check, self).__init__(*args, **kwargs)
def CheckModule(self):
kinds = dict()
for module in self.module.imports:
for kind in module.enums + module.structs + module.unions:
kind_name = f'{kind.module.mojom_namespace}.{kind.mojom_name}'
if kind_name in kinds:
previous_module = kinds[kind_name]
if previous_module.path != module.path:
raise check.CheckException(
self.module, f"multiple-definition for type {kind_name}" +
f"(defined in both {previous_module} and {module})")
kinds[kind_name] = kind.module
for kind in self.module.enums + self.module.structs + self.module.unions:
kind_name = f'{kind.module.mojom_namespace}.{kind.mojom_name}'
if kind_name in kinds:
previous_module = kinds[kind_name]
raise check.CheckException(
self.module, f"multiple-definition for type {kind_name}" +
f"(previous definition in {previous_module})")
return True
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