| #!/usr/bin/env python3 |
| # Copyright 2019 The Fuchsia Authors. All rights reserved. |
| # Use of this source code is governed by a BSD-style license that can be |
| # found in the LICENSE file. |
| |
| ''' |
| Find protocols with [Layout = "Simple"] that pass unions. |
| ''' |
| |
| from ir import Libraries, Enum, Struct, Union |
| |
| fidl_libraries = Libraries() |
| |
| |
| def is_simple(p): |
| attrs = p.get('maybe_attributes', []) |
| return any(a['name'] == 'Layout' and a['value'] == 'Simple' for a in attrs) |
| |
| |
| def has_union(t): |
| if t.kind == 'identifier': |
| declaration = t.library.libraries.find(t['identifier']) |
| if isinstance(declaration, Union): |
| return True |
| if isinstance(declaration, Struct): |
| return any(has_union(m.type) for m in declaration.members) |
| # Note: there will be no xunions or tables |
| return False |
| elif 'element_type' in t: |
| return has_union(t.element_type) |
| return False |
| |
| |
| for library in fidl_libraries: |
| for protocol in library.interfaces: |
| if not is_simple(protocol): |
| continue |
| for method in protocol.methods: |
| args = [] |
| args.extend(method.request() or []) |
| args.extend(method.response() or []) |
| if any(has_union(a.type) for a in args): |
| print('{}.{} has unions'.format(protocol['name'], method['name'])) |
