/*******************************************************************************
* Copyright 2019 Intel Corporation
*
* 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.
*******************************************************************************/

#include <stdio.h>
#include <stdlib.h>

#include "dnnl_common.hpp"
#include "utils/parser.hpp"
#include "utils/task_executor.hpp"

#include "binary/binary.hpp"

namespace binary {

TASK_EXECUTOR_DECL_TYPES;

void check_correctness(
        const settings_t &s, driver_task_executor_t &task_executor) {
    for_(const auto &i_sdt : s.sdt)
    for_(const auto &i_ddt : s.ddt)
    for_(const auto &i_stag : s.stag)
    for_(const auto &i_dtag : s.dtag)
    for_(const auto &i_strides : s.strides)
    for_(const auto &i_alg : s.alg)
    for_(const auto &i_attr : s.attributes)
    for_(const auto &i_ctx_init : s.ctx_init)
    for_(const auto &i_ctx_exe : s.ctx_exe)
    for (auto i_inplace : s.inplace) {
        const prb_t prb(s.prb_vdims, i_sdt, i_ddt, i_stag, i_dtag, i_strides,
                i_alg, i_inplace, i_attr, i_ctx_init, i_ctx_exe, s.impl_filter);
        if (s.pattern && !match_regex(prb.str(), s.pattern)) return;

        task_executor.submit(prb, s.perf_template, createit, checkit, doit);
    }
}

int verify_input(const settings_t &s, const settings_t &def) {
    // Expect exactly two inputs for problem dimensions.
    static constexpr int n_inputs = 2;

    if (s.prb_vdims.n_inputs() != n_inputs) {
        BENCHDNN_PRINT(0, "%s\n",
                "ERROR: binary driver: expect problem dimensions in format "
                "`A0xA1x...:B0xB1x...`.");
        SAFE_V(FAIL);
    }

    for (const auto &i_sdt : s.sdt) {
        if (i_sdt.size() != n_inputs) {
            BENCHDNN_PRINT(0, "%s\n",
                    "ERROR: binary driver: expect data types in format "
                    "`DT:DT`.");
            SAFE_V(FAIL);
        }
    }

    static constexpr int n_outputs = 1;
    for (const auto &i_strides : s.strides) {
        if (i_strides.size() != n_inputs + n_outputs) {
            BENCHDNN_PRINT(0, "%s\n",
                    "ERROR: `strides` option expects three inputs in format "
                    "`[SRC]:[SRC]:[DST]` (two colons must present).");
            return FAIL;
        }
    }

    for_(const auto &i_strides : s.strides)
    for_(const auto &i_stag : s.stag)
    for (const auto &i_dtag : s.dtag) {
        const bool strided_input = !i_strides[STRIDES_SRC].empty()
                || !i_strides[STRIDES_WEI].empty()
                || !i_strides[STRIDES_DST].empty();
        if (strided_input) {
            const bool no_stride_with_tag
                    = IMPLICATION(i_stag[0] != def.stag[0][0],
                              i_strides[STRIDES_SRC].empty())
                    && IMPLICATION(i_stag[1] != def.stag[0][1],
                            i_strides[STRIDES_WEI].empty())
                    && IMPLICATION(i_dtag != def.dtag[0],
                            i_strides[STRIDES_DST].empty());

            if (!no_stride_with_tag) {
                fprintf(stderr,
                        "ERROR: binary driver: both `strides` and `tag` knobs "
                        "can not be used with either of `src`, and `dst`"
                        " tensors.\n"),
                        fflush(stderr);
                SAFE_V(FAIL);
            }
        }
    }

    for (const auto &i_alg : s.alg) {
        if (!(i_alg > alg_t::BINARY_START && i_alg < alg_t::BINARY_END)) {
            BENCHDNN_PRINT(0,
                    "ERROR: binary driver: algorithm `%s` does not belong to "
                    "binary algorithm type.\n",
                    attr_t::post_ops_t::kind2str(i_alg));
            SAFE_V(FAIL);
        }
    }

    return OK;
}

int bench(int argc, char **argv) {
    driver_name = "binary";
    using namespace parser;
    static settings_t s;
    static const settings_t def {};
    static driver_task_executor_t task_executor;
    for (; argc > 0; --argc, ++argv) {
        const bool parsed_options = parse_bench_settings(argv[0])
                || parse_batch(bench, argv[0])
                || parse_multi_dt(s.sdt, def.sdt, argv[0])
                || parse_dt(s.ddt, def.ddt, argv[0], "ddt")
                || parse_multi_tag(s.stag, def.stag, argv[0])
                || parse_tag(s.dtag, def.dtag, argv[0], "dtag")
                || parse_strides(s.strides, def.strides, argv[0], "strides")
                || parse_alg(
                        s.alg, def.alg, attr_t::post_ops_t::str2kind, argv[0])
                || parse_inplace(s.inplace, def.inplace, argv[0])
                || parse_driver_shared_settings(s, def, argv[0]);
        if (!parsed_options) {
            catch_unknown_options(argv[0]);

            parse_prb_vdims(s.prb_vdims, argv[0]);

            SAFE(verify_input(s, def), WARN);
            s.finalize();
            check_correctness(s, task_executor);
        }
    }

    task_executor.flush();

    return parse_last_argument();
}

} // namespace binary
