# Copyright 2021 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("//build/rust/rustc_library.gni")

assert(is_host, "gn_desc is only supported on the host")

# The JSON parsing for GN's desc output
rustc_library("gn_json") {
  edition = "2021"

  # This needs to be compiled with optimizations enabled to be at all
  # performant when deserializing the 100s of MBs of `gn desc` json output.
  configs += [ "//build/config:optimize_speed" ]

  deps = [
    "//third_party/rust_crates:anyhow",
    "//third_party/rust_crates:serde",
    "//third_party/rust_crates:serde_json",
    "//third_party/rust_crates:thiserror",
  ]

  source_root = "src/lib.rs"
  sources = [
    "src/label.rs",
    "src/lib.rs",
    "src/target.rs",
  ]
}

# And its unit tests
rustc_test("gn_json_tests") {
  edition = "2021"
  deps = [
    "//third_party/rust_crates:anyhow",
    "//third_party/rust_crates:pretty_assertions",
    "//third_party/rust_crates:serde",
    "//third_party/rust_crates:serde_json",
    "//third_party/rust_crates:thiserror",
  ]

  source_root = "src/lib.rs"
  sources = [
    "src/label.rs",
    "src/lib.rs",
    "src/target.rs",
  ]
}

# All the (host) tests.
group("tests") {
  testonly = true
  deps = [ ":gn_json_tests" ]
}