# Copyright 2023 The Tint 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
#
#     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.

import("//build_overrides/build.gni")

import("../../scripts/tint_overrides_with_defaults.gni")

template("libtint_source_set") {
  source_set(target_name) {
    forward_variables_from(invoker, "*", [ "configs" ])

    if (!defined(invoker.deps)) {
      deps = []
    }

    if (defined(invoker.configs)) {
      configs += invoker.configs
    }

    configs += [ "${tint_src_dir}:tint_common_config" ]

    if (build_with_chromium) {
      configs -= [ "//build/config/compiler:chromium_code" ]
      configs += [ "//build/config/compiler:no_chromium_code" ]
    }

    if (!defined(invoker.public_configs)) {
      public_configs = []
    }

    public_configs += [ "${tint_src_dir}:tint_public_config" ]
  }
}

###############################################################################
# Executables - only built when tint_build_cmds is enabled
###############################################################################
template("tint_executable") {
  if (tint_build_cmds) {
    executable(target_name) {
      forward_variables_from(invoker, "*")
    }
  }
}

###############################################################################
# Unit tests - only built when tint_build_unittests is enabled
###############################################################################
template("tint_unittests_source_set") {
  if (tint_build_unittests) {
    source_set(target_name) {
      forward_variables_from(invoker, "*", [ "configs" ])

      testonly = true

      if (defined(invoker.configs)) {
        configs += invoker.configs
      }

      configs += [ "${tint_src_dir}:tint_unittests_config" ]

      if (build_with_chromium) {
        configs -= [ "//build/config/compiler:chromium_code" ]
        configs += [ "//build/config/compiler:no_chromium_code" ]
      }

      if (!defined(invoker.deps)) {
        deps = []
      }

      deps += [ "${tint_src_dir}:gmock_and_gtest" ]
    }
  }
}

###############################################################################
# Fuzzers - only built when tint_has_fuzzers is enabled
###############################################################################
if (tint_has_fuzzers) {
  import("//testing/libfuzzer/fuzzer_test.gni")
  fuzzer_corpus_wgsl_dir = "${root_gen_dir}/fuzzers/wgsl_corpus"
  fuzzer_corpus_wgsl_stamp = "${fuzzer_corpus_wgsl_dir}.stamp"

  template("tint_fuzz_source_set") {
    source_set(target_name) {
      forward_variables_from(invoker, "*", [ "configs" ])

      testonly = true

      if (!defined(invoker.deps)) {
        deps = []
      }

      if (defined(invoker.configs)) {
        configs += invoker.configs
      }

      configs += [ "${tint_src_dir}:tint_common_config" ]

      if (build_with_chromium) {
        configs -= [ "//build/config/compiler:chromium_code" ]
        configs += [ "//build/config/compiler:no_chromium_code" ]
      }

      if (!defined(invoker.public_configs)) {
        public_configs = []
      }

      public_configs += [ "${tint_src_dir}:tint_public_config" ]
    }
  }

  template("tint_fuzzer_test") {
    fuzzer_test(target_name) {
      forward_variables_from(invoker, "*")
      exclude_main = false

      if (target_name == "wgsl") {
        dict = "dictionary.txt"
        libfuzzer_options = [
          "only_ascii=1",  # TODO(bclayton): Remove this to fuzz unicode?
          "max_len=10000",
        ]
        seed_corpus = fuzzer_corpus_wgsl_dir
        seed_corpus_deps = [ "${tint_src_dir}:tint_generate_wgsl_corpus" ]
      } else {
        assert(false, "unsupported tint fuzzer target")
      }
    }
  }
} else {
  template("tint_fuzz_source_set") {
  }
  template("tint_fuzzer_test") {
  }
}