# Copyright 2022 The Abseil 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.

load("@rules_cc//cc:cc_binary.bzl", "cc_binary")
load("@rules_cc//cc:cc_library.bzl", "cc_library")
load("@rules_cc//cc:cc_test.bzl", "cc_test")
load(
    "//absl:copts/configure_copts.bzl",
    "ABSL_DEFAULT_COPTS",
    "ABSL_DEFAULT_LINKOPTS",
    "ABSL_TEST_COPTS",
)

package(
    default_visibility = ["//visibility:private"],
    features = [
        "header_modules",
        "layering_check",
        "parse_headers",
    ],
)

licenses(["notice"])

cc_library(
    name = "cpu_detect",
    srcs = [
        "internal/cpu_detect.cc",
    ],
    hdrs = ["internal/cpu_detect.h"],
    copts = ABSL_DEFAULT_COPTS,
    linkopts = ABSL_DEFAULT_LINKOPTS,
    visibility = ["//visibility:private"],
    deps = [
        "//absl/base",
        "//absl/base:config",
        "//absl/types:optional",
    ],
)

cc_library(
    name = "crc_internal",
    srcs = [
        "internal/crc.cc",
        "internal/crc_internal.h",
        "internal/crc_x86_arm_combined.cc",
    ],
    hdrs = [
        "internal/crc.h",
        "internal/crc32_x86_arm_combined_simd.h",
    ],
    copts = ABSL_DEFAULT_COPTS,
    linkopts = ABSL_DEFAULT_LINKOPTS,
    visibility = ["//visibility:private"],
    deps = [
        ":cpu_detect",
        "//absl/base:config",
        "//absl/base:core_headers",
        "//absl/base:endian",
        "//absl/base:prefetch",
        "//absl/base:raw_logging_internal",
        "//absl/memory",
        "//absl/numeric:bits",
    ],
)

cc_library(
    name = "crc32c",
    srcs = [
        "crc32c.cc",
        "internal/crc32c_inline.h",
        "internal/crc_memcpy_fallback.cc",
        "internal/crc_memcpy_x86_arm_combined.cc",
        "internal/crc_non_temporal_memcpy.cc",
    ],
    hdrs = [
        "crc32c.h",
        "internal/crc32c.h",
        "internal/crc_memcpy.h",
    ],
    copts = ABSL_DEFAULT_COPTS,
    linkopts = ABSL_DEFAULT_LINKOPTS,
    visibility = ["//visibility:public"],
    deps = [
        ":cpu_detect",
        ":crc_internal",
        ":non_temporal_memcpy",
        "//absl/base:config",
        "//absl/base:core_headers",
        "//absl/base:endian",
        "//absl/base:prefetch",
        "//absl/strings",
        "//absl/strings:str_format",
    ],
)

cc_test(
    name = "crc32c_test",
    srcs = ["crc32c_test.cc"],
    copts = ABSL_TEST_COPTS,
    linkopts = ABSL_DEFAULT_LINKOPTS,
    visibility = ["//visibility:private"],
    deps = [
        ":crc32c",
        "//absl/strings",
        "//absl/strings:str_format",
        "@googletest//:gtest",
        "@googletest//:gtest_main",
    ],
)

cc_library(
    name = "non_temporal_arm_intrinsics",
    hdrs = ["internal/non_temporal_arm_intrinsics.h"],
    copts = ABSL_DEFAULT_COPTS,
    linkopts = ABSL_DEFAULT_LINKOPTS,
    visibility = [
        ":__pkg__",
    ],
    deps = [
        "//absl/base:config",
    ],
)

cc_library(
    name = "non_temporal_memcpy",
    hdrs = ["internal/non_temporal_memcpy.h"],
    copts = ABSL_DEFAULT_COPTS,
    linkopts = ABSL_DEFAULT_LINKOPTS,
    visibility = [
        ":__pkg__",
    ],
    deps = [
        ":non_temporal_arm_intrinsics",
        "//absl/base:config",
        "//absl/base:core_headers",
    ],
)

cc_test(
    name = "crc_memcpy_test",
    size = "large",
    srcs = ["internal/crc_memcpy_test.cc"],
    copts = ABSL_TEST_COPTS,
    linkopts = ABSL_DEFAULT_LINKOPTS,
    shard_count = 3,
    visibility = ["//visibility:private"],
    deps = [
        ":crc32c",
        "//absl/memory",
        "//absl/random",
        "//absl/random:distributions",
        "//absl/strings",
        "@googletest//:gtest",
        "@googletest//:gtest_main",
    ],
)

cc_test(
    name = "non_temporal_memcpy_test",
    srcs = ["internal/non_temporal_memcpy_test.cc"],
    copts = ABSL_TEST_COPTS,
    linkopts = ABSL_DEFAULT_LINKOPTS,
    visibility = ["//visibility:private"],
    deps = [
        ":non_temporal_memcpy",
        "@googletest//:gtest",
        "@googletest//:gtest_main",
    ],
)

cc_library(
    name = "crc_cord_state",
    srcs = ["internal/crc_cord_state.cc"],
    hdrs = ["internal/crc_cord_state.h"],
    copts = ABSL_DEFAULT_COPTS,
    linkopts = ABSL_DEFAULT_LINKOPTS,
    visibility = ["//absl/strings:__pkg__"],
    deps = [
        ":crc32c",
        "//absl/base:config",
        "//absl/base:no_destructor",
        "//absl/numeric:bits",
    ],
)

cc_test(
    name = "crc_cord_state_test",
    srcs = ["internal/crc_cord_state_test.cc"],
    copts = ABSL_TEST_COPTS,
    linkopts = ABSL_DEFAULT_LINKOPTS,
    visibility = ["//visibility:private"],
    deps = [
        ":crc32c",
        ":crc_cord_state",
        "@googletest//:gtest",
        "@googletest//:gtest_main",
    ],
)

cc_binary(
    name = "crc32c_benchmark",
    testonly = True,
    srcs = ["crc32c_benchmark.cc"],
    copts = ABSL_TEST_COPTS,
    linkopts = ABSL_DEFAULT_LINKOPTS,
    tags = [
        "benchmark",
    ],
    visibility = ["//visibility:private"],
    deps = [
        ":crc32c",
        "//absl/memory",
        "//absl/strings",
        "@google_benchmark//:benchmark_main",
    ],
)