/*
 * Copyright (c) 2019-2023, NVIDIA CORPORATION.  All rights reserved.
 *
 * 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.
 */

#pragma once

#include "src/fastertransformer/utils/cuda_utils.h"

namespace fastertransformer {

enum class ActivationType {
    Gelu,
    Relu,
    Silu,
    GeGLU,
    ReGLU,
    SiGLU,
    Identity,
    InvalidType
};

inline ActivationType getActivationType(std::string activation_type_str)
{
    if (activation_type_str == "Gelu" || activation_type_str == "gelu") {
        return ActivationType::Gelu;
    }
    else if (activation_type_str == "Relu" || activation_type_str == "relu") {
        return ActivationType::Relu;
    }
    else if (activation_type_str == "Silu" || activation_type_str == "silu") {
        return ActivationType::Silu;
    }
    else if (activation_type_str == "GeGLU" || activation_type_str == "geglu" || activation_type_str == "gated-gelu") {
        return ActivationType::GeGLU;
    }
    else if (activation_type_str == "ReGLU" || activation_type_str == "reglu" || activation_type_str == "gated-relu") {
        return ActivationType::ReGLU;
    }
    else if (activation_type_str == "SiGLU" || activation_type_str == "gated-silu") {
        return ActivationType::SiGLU;
    }
    else {
        FT_CHECK_WITH_INFO(false, "Activation Type: " + activation_type_str + " not supported !");
    }
    return ActivationType::InvalidType;
}

inline bool isGatedActivation(ActivationType activaiton_type)
{
    return activaiton_type == ActivationType::GeGLU || activaiton_type == ActivationType::ReGLU
           || activaiton_type == ActivationType::SiGLU;
}

}  // namespace fastertransformer