# Copyright 2020 The Fuchsia Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

import("config/config.gni")

# Compiles a Components Framework v2 manifest (.cml) file to .cm
#
# The compiled manifest will be pretty-printed if is_debug is true.
#
# Parameters
#
#   manifest
#     Required: The input Component Framework v2 manifest source (.cml) file.
#     The file must have the extension ".cml".
#
#   output_name:
#     Optional: Name of the output file to generate. Defaults to $target_name.
#     This should not include a file extension (.cm)
#
#   deps
#   public_deps
#   testonly
#   visibility
#     Optional: Standard GN meaning.
template("cmc_compile") {
  output_name = target_name
  if (defined(invoker.output_name)) {
    output_name = invoker.output_name
  }

  action(target_name) {
    forward_variables_from(invoker,
                           [
                             "deps",
                             "manifest",
                             "public_deps",
                             "testonly",
                             "visibility",
                           ])
    assert(defined(manifest), "manifest file required")

    script = "${fuchsia_sdk}/build/gn_run_binary.py"

    inputs = [
      # Depend on the SDK hash, to ensure rebuild if the SDK tools change.
      fuchsia_sdk_manifest_file,
      manifest,
    ]

    output_file = "$target_out_dir/$output_name.cm"
    outputs = [ output_file ]

    args = [
      rebase_path("${fuchsia_sdk}/tools/cmc", root_build_dir),
      "compile",
      "--output",
      rebase_path(output_file, root_build_dir),
      rebase_path(manifest, root_build_dir),
    ]

    if (is_debug) {
      args += [ "--pretty" ]
    }
  }
}