Dispatch.h

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// ----------------------------------------------------------------------------
// -                        Open3D: www.open3d.org                            -
// ----------------------------------------------------------------------------
// The MIT License (MIT)
//
// Copyright (c) 2018 www.open3d.org
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
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// The above copyright notice and this permission notice shall be included in
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#pragma once

#include "open3d/core/Dtype.h"
#include "open3d/utility/Console.h"

#define DISPATCH_DTYPE_TO_TEMPLATE(DTYPE, ...)              \
    [&] {                                                   \
        if (DTYPE == open3d::core::Dtype::Float32) {        \
            using scalar_t = float;                         \
            return __VA_ARGS__();                           \
        } else if (DTYPE == open3d::core::Dtype::Float64) { \
            using scalar_t = double;                        \
            return __VA_ARGS__();                           \
        } else if (DTYPE == open3d::core::Dtype::Int32) {   \
            using scalar_t = int32_t;                       \
            return __VA_ARGS__();                           \
        } else if (DTYPE == open3d::core::Dtype::Int64) {   \
            using scalar_t = int64_t;                       \
            return __VA_ARGS__();                           \
        } else if (DTYPE == open3d::core::Dtype::UInt8) {   \
            using scalar_t = uint8_t;                       \
            return __VA_ARGS__();                           \
        } else if (DTYPE == open3d::core::Dtype::UInt16) {  \
            using scalar_t = uint16_t;                      \
            return __VA_ARGS__();                           \
        } else {                                            \
            utility::LogError("Unsupported data type.");    \
        }                                                   \
    }()

#define DISPATCH_DTYPE_TO_TEMPLATE_WITH_BOOL(DTYPE, ...)    \
    [&] {                                                   \
        if (DTYPE == open3d::core::Dtype::Bool) {           \
            using scalar_t = bool;                          \
            return __VA_ARGS__();                           \
        } else {                                            \
            DISPATCH_DTYPE_TO_TEMPLATE(DTYPE, __VA_ARGS__); \
        }                                                   \
    }()