| # 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. |
| """ |
| Filters clang args to make them suitable for libclang. |
| |
| Rust involves several libclang-based tools that parse C++. |
| We pass such tools our complete {{cflags}}, but a few of the |
| arguments aren't appropriate for libclang (for example those |
| which load plugins). |
| |
| This function filters them out. |
| """ |
| |
| |
| def filter_clang_args(clangargs): |
| def do_filter(args): |
| i = 0 |
| while i < len(args): |
| # Intercept plugin arguments |
| if args[i] == '-Xclang': |
| i += 1 |
| if args[i] == '-add-plugin': |
| pass |
| elif args[i].startswith('-plugin-arg'): |
| i += 2 |
| else: |
| yield args[i] |
| i += 1 |
| |
| return list(do_filter(clangargs)) |
