mirror of https://github.com/bazelbuild/rules_cc
124 lines
3.6 KiB
Python
124 lines
3.6 KiB
Python
# Copyright 2024 The Bazel Authors. All rights reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""All providers for rule-based bazel toolchain config."""
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load("//cc:cc_toolchain_config_lib.bzl", "flag_group")
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load(
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"//cc/toolchains/impl:collect.bzl",
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"collect_action_types",
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"collect_files",
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"collect_provider",
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)
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load(
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":cc_toolchain_info.bzl",
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"ActionTypeSetInfo",
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"ArgsInfo",
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"ArgsListInfo",
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"FeatureConstraintInfo",
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"NestedArgsInfo",
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)
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visibility("public")
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def _cc_args_impl(ctx):
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if not ctx.attr.args and not ctx.attr.env:
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fail("cc_args requires at least one of args and env")
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actions = collect_action_types(ctx.attr.actions)
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files = collect_files(ctx.attr.data)
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requires = collect_provider(ctx.attr.requires_any_of, FeatureConstraintInfo)
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nested = None
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if ctx.attr.args:
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# TODO: This is temporary until cc_nested_args is implemented.
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nested = NestedArgsInfo(
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label = ctx.label,
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nested = tuple(),
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iterate_over = None,
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files = files,
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requires_types = {},
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legacy_flag_group = flag_group(flags = ctx.attr.args),
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)
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args = ArgsInfo(
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label = ctx.label,
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actions = actions,
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requires_any_of = tuple(requires),
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nested = nested,
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env = ctx.attr.env,
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files = files,
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)
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return [
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args,
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ArgsListInfo(
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label = ctx.label,
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args = tuple([args]),
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files = files,
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by_action = tuple([
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struct(action = action, args = tuple([args]), files = files)
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for action in actions.to_list()
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]),
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),
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]
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cc_args = rule(
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implementation = _cc_args_impl,
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attrs = {
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"actions": attr.label_list(
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providers = [ActionTypeSetInfo],
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mandatory = True,
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doc = """A list of action types that this flag set applies to.
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See @rules_cc//cc/toolchains/actions:all for valid options.
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""",
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),
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"args": attr.string_list(
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doc = """Arguments that should be added to the command-line.
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These are evaluated in order, with earlier args appearing earlier in the
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invocation of the underlying tool.
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""",
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),
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"data": attr.label_list(
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allow_files = True,
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doc = """Files required to add this argument to the command-line.
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For example, a flag that sets the header directory might add the headers in that
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directory as additional files.
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""",
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),
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"env": attr.string_dict(
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doc = "Environment variables to be added to the command-line.",
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),
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"requires_any_of": attr.label_list(
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providers = [FeatureConstraintInfo],
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doc = """This will be enabled when any of the constraints are met.
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If omitted, this flag set will be enabled unconditionally.
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""",
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),
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},
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provides = [ArgsInfo],
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doc = """Declares a list of arguments bound to a set of actions.
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Roughly equivalent to ctx.actions.args()
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Examples:
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cc_args(
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name = "warnings_as_errors",
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args = ["-Werror"],
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)
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""",
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)
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