| # Copyright 2020 The Pigweed Authors |
| # |
| # Licensed under the Apache License, Version 2.0 (the "License"); you may not |
| # use this file except in compliance with the License. You may obtain a copy of |
| # the License at |
| # |
| # https://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, software |
| # distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
| # WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
| # License for the specific language governing permissions and limitations under |
| # the License. |
| |
| import("//build_overrides/pigweed.gni") |
| |
| import("$dir_pw_build/python_action.gni") |
| |
| # Updates a tokenized string database in the source tree with artifacts from one |
| # or more targets. Other database files may also be used. |
| # |
| # The database file must exist. A CSV or binary database can be created with the |
| # pw/pw_tokenizer/database.py tool. An empty CSV database file can be also |
| # created as a starting point. |
| # |
| # Args: |
| # database: if updating a database, path to an existing database in the source |
| # tree; optional if creating a database, but may provide an output |
| # directory path to override the default of |
| # "$target_gen_dir/$target_name.[csv/binary]" |
| # create: if specified, create a database instead of updating one; 'create' |
| # must be set to one of the supported database types: "csv" or "binary" |
| # targets: GN targets (executables or libraries) from which to add tokens; |
| # these targets are added to deps |
| # optional_targets: GN targets from which to add tokens, if the output files |
| # already exist; these targets are NOT added to deps |
| # input_databases: paths to other database files from which to add tokens |
| # deps: GN targets to build prior to generating the database; artifacts from |
| # these targets are NOT implicitly used for database generation |
| # domain: if provided, extract strings from tokenization domains matching this |
| # regular expression |
| # |
| template("pw_tokenizer_database") { |
| assert(defined(invoker.database) || defined(invoker.create), |
| "pw_tokenizer_database requires a 'database' variable, unless " + |
| "'create' is specified") |
| |
| if (defined(invoker.create)) { |
| assert(invoker.create == "csv" || invoker.create == "binary", |
| "If provided, 'create' must be \"csv\" or \"binary\"") |
| _create = invoker.create |
| } else { |
| _create = "" |
| } |
| |
| if (defined(invoker.database)) { |
| _database = invoker.database |
| } else { |
| _database = "$target_gen_dir/$target_name.${invoker.create}" |
| } |
| if (defined(invoker.targets)) { |
| _targets = invoker.targets |
| } else { |
| _targets = [] |
| } |
| |
| if (defined(invoker.optional_targets)) { |
| _optional_targets = invoker.optional_targets |
| } else { |
| _optional_targets = [] |
| } |
| |
| if (defined(invoker.input_databases)) { |
| _input_databases = invoker.input_databases |
| } else { |
| _input_databases = [] |
| } |
| |
| if (defined(invoker.domain)) { |
| _domain = "#" + invoker.domain |
| } else { |
| _domain = "" |
| } |
| |
| if (_targets == [] && _optional_targets == []) { |
| # If no targets were specified, the domain will not be used, which is OK. |
| not_needed([ "_domain" ]) |
| } |
| |
| # Restrict parallelism for updating this database file to one thread. This |
| # makes it safe to update it from multiple toolchains. |
| pool("$target_name._pool") { |
| depth = 1 |
| } |
| |
| pw_python_action(target_name) { |
| script = "$dir_pw_tokenizer/py/pw_tokenizer/database.py" |
| pool = ":$target_name._pool" |
| |
| inputs = _input_databases |
| |
| if (_create == "") { |
| args = [ "add" ] |
| inputs += [ _database ] |
| stamp = true |
| } else { |
| args = [ |
| "create", |
| "--force", |
| "--type", |
| _create, |
| ] |
| outputs = [ _database ] |
| } |
| |
| args += [ |
| "--database", |
| rebase_path(_database), |
| ] |
| args += rebase_path(_input_databases) |
| |
| foreach(target, _targets) { |
| args += [ "<TARGET_FILE($target)>$_domain" ] |
| } |
| |
| # For optional targets, the build outputs may not exist, since they aren't |
| # added to deps. Use TARGET_FILE_IF_EXISTS to handle this. |
| foreach(target, _optional_targets) { |
| args += [ "<TARGET_FILE_IF_EXISTS($target)>$_domain" ] |
| } |
| |
| deps = _targets |
| |
| if (defined(invoker.deps)) { |
| deps += invoker.deps |
| } |
| } |
| } |