# Copyright 2024 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/gn_internal/build_target.gni")

# Note: In general, prefer to import target_types.gni rather than this file.
#
# This template wraps a configurable target type specified by the current
# toolchain to be used for all pw_rust_bindgen targets. It wraps a creation of
# an action target `rust_bindgen_action.gni`.
#
# Args:
#  cflags: C flags passed to bindgen.
#
#  cflags_c: Suppliment C flags. Useful for override toolchain C flags.
#
#  configs: Configs specify sets of compiler flags, includes, defines, etc
#
#  deps: Dependencies for this target.
#
#  header: C header file for generating bindings.
#
#  libclang_path: Optional. Path to directory of libclang.so for bindgen to use.
#     By default bindgen dynamically links to system wide libclang.
#
#  public_deps: Public dependencies for this target. In addition to outputs from
#    this target, outputs generated by public dependencies can be used as inputs
#    from targets that depend on this one. This is not the case for private
#    deps.
#
#  public_configs: Configs to be applied on dependents.
#
#  outputs: Output path of the generated rust bindings source file.
#
#  visibility: GN visibility to apply to the underlying target.
#
# For more information on the features provided by this template, see the full
# docs at https://pigweed.dev/pw_build/?highlight=pw_rust_bindgen

_action_gni_path = get_path_info("rust_bindgen_action.gni", "abspath")

template("pw_rust_bindgen") {
  pw_internal_build_target(target_name) {
    forward_variables_from(invoker, "*")

    target_type_file = _action_gni_path
    underlying_target_type = "rust_bindgen_action"
    add_global_link_deps = false
  }
}