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# 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

# http://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.

"""Implementation of current_py_cc_headers rule."""

load("@rules_cc//cc:defs.bzl", "CcInfo")

def _current_py_cc_headers_impl(ctx):

py_cc_toolchain = ctx.toolchains["//python/cc:toolchain_type"].py_cc_toolchain

return py_cc_toolchain.headers.providers_map.values()

current_py_cc_headers = rule(

implementation = _current_py_cc_headers_impl,

toolchains = ["//python/cc:toolchain_type"],

provides = [CcInfo],

doc = """\

Provides the currently active Python toolchain's C headers.

This is a wrapper around the underlying `cc_library()` for the

C headers for the consuming target's currently active Python toolchain.

To use, simply depend on this target where you would have wanted the

toolchain's underlying `:python_headers` target:

```starlark

cc_library(

name = "foo",

deps = ["@rules_python//python/cc:current_py_cc_headers"]

)

```

""",

)