//! This file has been automatically generated by `objc2`'s `header-translator`.
//! DO NOT EDIT
use core::ffi::*;
use core::ptr::NonNull;
use objc2::__framework_prelude::*;
use objc2_foundation::*;

use crate::*;

/// The possible data types for the elements of a tensor.
///
/// See also [Apple's documentation](https://developer.apple.com/documentation/metal/mtltensordatatype?language=objc)
// NS_ENUM
#[repr(transparent)]
#[derive(Clone, Copy, Debug, PartialEq, Eq, Hash, PartialOrd, Ord)]
pub struct MTLTensorDataType(pub NSInteger);
impl MTLTensorDataType {
    #[doc(alias = "MTLTensorDataTypeNone")]
    pub const None: Self = Self(0);
    #[doc(alias = "MTLTensorDataTypeFloat32")]
    pub const Float32: Self = Self(3);
    #[doc(alias = "MTLTensorDataTypeFloat16")]
    pub const Float16: Self = Self(16);
    #[doc(alias = "MTLTensorDataTypeBFloat16")]
    pub const BFloat16: Self = Self(121);
    #[doc(alias = "MTLTensorDataTypeInt8")]
    pub const Int8: Self = Self(45);
    #[doc(alias = "MTLTensorDataTypeUInt8")]
    pub const UInt8: Self = Self(49);
    #[doc(alias = "MTLTensorDataTypeInt16")]
    pub const Int16: Self = Self(37);
    #[doc(alias = "MTLTensorDataTypeUInt16")]
    pub const UInt16: Self = Self(41);
    #[doc(alias = "MTLTensorDataTypeInt32")]
    pub const Int32: Self = Self(29);
    #[doc(alias = "MTLTensorDataTypeUInt32")]
    pub const UInt32: Self = Self(33);
}

unsafe impl Encode for MTLTensorDataType {
    const ENCODING: Encoding = NSInteger::ENCODING;
}

unsafe impl RefEncode for MTLTensorDataType {
    const ENCODING_REF: Encoding = Encoding::Pointer(&Self::ENCODING);
}

extern_class!(
    /// An array of length matching the rank, holding the dimensions of a tensor.
    ///
    /// Supports rank up to ``MTL_TENSOR_MAX_RANK``.
    ///
    /// See also [Apple's documentation](https://developer.apple.com/documentation/metal/mtltensorextents?language=objc)
    #[unsafe(super(NSObject))]
    #[derive(Debug, PartialEq, Eq, Hash)]
    pub struct MTLTensorExtents;
);

extern_conformance!(
    unsafe impl NSObjectProtocol for MTLTensorExtents {}
);

impl MTLTensorExtents {
    extern_methods!(
        /// Creates a new tensor extents with the rank and extent values you provide.
        ///
        /// Zero rank extents represent scalars. `values` can only be `nil`if `rank` is 0.
        /// - Parameters:
        /// - rank: the number of dimensions.
        /// - values: an array of length `rank` that specifies the size of each dimension. The first dimension is the innermost dimension.
        /// - Returns: Tensor extents with the rank and extent values you provide. Returns `nil` if `rank` exceeds 0 and `values` is nil or if `rank` exceeds ``MTL_TENSOR_MAX_RANK``.
        ///
        /// # Safety
        ///
        /// `values` must be a valid pointer or null.
        #[unsafe(method(initWithRank:values:))]
        #[unsafe(method_family = init)]
        pub unsafe fn initWithRank_values(
            this: Allocated<Self>,
            rank: NSUInteger,
            values: *const NSInteger,
        ) -> Option<Retained<Self>>;

        /// Obtains the rank of the tensor.
        ///
        /// The rank represents the number of dimensions.
        #[unsafe(method(rank))]
        #[unsafe(method_family = none)]
        pub fn rank(&self) -> NSUInteger;

        /// Returns the extent at an index.
        ///
        /// - Parameters:
        /// - dimensionIndex: the index of the dimension. The first dimension is the innermost dimension.
        /// - Returns: the extent at `dimensionIndex`. This method returns -1 if `dimensionIndex` is greater than or equal to `rank`.
        ///
        /// # Safety
        ///
        /// `dimensionIndex` might not be bounds-checked.
        #[unsafe(method(extentAtDimensionIndex:))]
        #[unsafe(method_family = none)]
        pub unsafe fn extentAtDimensionIndex(&self, dimension_index: NSUInteger) -> NSInteger;
    );
}

/// Methods declared on superclass `NSObject`.
impl MTLTensorExtents {
    extern_methods!(
        #[unsafe(method(init))]
        #[unsafe(method_family = init)]
        pub fn init(this: Allocated<Self>) -> Retained<Self>;

        #[unsafe(method(new))]
        #[unsafe(method_family = new)]
        pub fn new() -> Retained<Self>;
    );
}

impl DefaultRetained for MTLTensorExtents {
    #[inline]
    fn default_retained() -> Retained<Self> {
        Self::new()
    }
}

extern "C" {
    /// An error domain for errors that pertain to creating a tensor.
    ///
    /// See also [Apple's documentation](https://developer.apple.com/documentation/metal/mtltensordomain?language=objc)
    pub static MTLTensorDomain: &'static NSErrorDomain;
}

/// The error codes that Metal can raise when you create a tensor.
///
/// See also [Apple's documentation](https://developer.apple.com/documentation/metal/mtltensorerror?language=objc)
// NS_ENUM
#[repr(transparent)]
#[derive(Clone, Copy, Debug, PartialEq, Eq, Hash, PartialOrd, Ord)]
pub struct MTLTensorError(pub NSInteger);
impl MTLTensorError {
    #[doc(alias = "MTLTensorErrorNone")]
    pub const None: Self = Self(0);
    #[doc(alias = "MTLTensorErrorInternalError")]
    pub const InternalError: Self = Self(1);
    #[doc(alias = "MTLTensorErrorInvalidDescriptor")]
    pub const InvalidDescriptor: Self = Self(2);
}

unsafe impl Encode for MTLTensorError {
    const ENCODING: Encoding = NSInteger::ENCODING;
}

unsafe impl RefEncode for MTLTensorError {
    const ENCODING_REF: Encoding = Encoding::Pointer(&Self::ENCODING);
}

/// The type that represents the different contexts for a tensor.
///
/// See also [Apple's documentation](https://developer.apple.com/documentation/metal/mtltensorusage?language=objc)
// NS_OPTIONS
#[repr(transparent)]
#[derive(Clone, Copy, Debug, PartialEq, Eq, Hash, PartialOrd, Ord)]
pub struct MTLTensorUsage(pub NSUInteger);
bitflags::bitflags! {
    impl MTLTensorUsage: NSUInteger {
/// A tensor context that applies to compute encoders.
///
/// You can use tensors with this context in ``MTL4ComputeCommandEncoder`` or ``MTLComputeCommandEncoder`` instances.
        #[doc(alias = "MTLTensorUsageCompute")]
        const Compute = 1<<0;
/// A tensor context that applies to render encoders.
///
/// You can use tensors with this context in ``MTL4RenderCommandEncoder`` or ``MTLRenderCommandEncoder`` instances.
        #[doc(alias = "MTLTensorUsageRender")]
        const Render = 1<<1;
/// A tensor context that applies to machine learning encoders.
///
/// You can use tensors with this context in ``MTL4MachineLearningCommandEncoder`` instances.
        #[doc(alias = "MTLTensorUsageMachineLearning")]
        const MachineLearning = 1<<2;
    }
}

unsafe impl Encode for MTLTensorUsage {
    const ENCODING: Encoding = NSUInteger::ENCODING;
}

unsafe impl RefEncode for MTLTensorUsage {
    const ENCODING_REF: Encoding = Encoding::Pointer(&Self::ENCODING);
}

extern_class!(
    /// A configuration type for creating new tensor instances.
    ///
    /// See also [Apple's documentation](https://developer.apple.com/documentation/metal/mtltensordescriptor?language=objc)
    #[unsafe(super(NSObject))]
    #[derive(Debug, PartialEq, Eq, Hash)]
    pub struct MTLTensorDescriptor;
);

extern_conformance!(
    unsafe impl NSCopying for MTLTensorDescriptor {}
);

unsafe impl CopyingHelper for MTLTensorDescriptor {
    type Result = Self;
}

extern_conformance!(
    unsafe impl NSObjectProtocol for MTLTensorDescriptor {}
);

impl MTLTensorDescriptor {
    extern_methods!(
        /// An array of sizes, in elements, one for each dimension of the tensors you create with this descriptor.
        ///
        /// The default value of this property is a rank one extents with size one.
        #[unsafe(method(dimensions))]
        #[unsafe(method_family = none)]
        pub fn dimensions(&self) -> Retained<MTLTensorExtents>;

        /// Setter for [`dimensions`][Self::dimensions].
        ///
        /// This is [copied][objc2_foundation::NSCopying::copy] when set.
        #[unsafe(method(setDimensions:))]
        #[unsafe(method_family = none)]
        pub fn setDimensions(&self, dimensions: &MTLTensorExtents);

        /// An array of strides, in elements, one for each dimension in the tensors you create with this descriptor, if applicable.
        ///
        /// This property only applies to tensors you create from a buffer, otherwise it is nil. You are responsible for ensuring `strides` meets the following requirements:
        /// - Elements of `strides`are in monotonically non-decreasing order.
        /// - The first element of `strides` is one.
        /// - For any `i` larger than zero, `strides[i]` is greater than or equal to `strides[i-1] * dimensions[i-1]`.
        /// - If `usage` contains ``MTLTensorUsage/MTLTensorUsageMachineLearning``, the second element of `strides` is aligned to 64 bytes, and for any `i` larger than one, `strides[i]` is equal to `strides[i-1] * dimensions[i-1]`.
        #[unsafe(method(strides))]
        #[unsafe(method_family = none)]
        pub fn strides(&self) -> Option<Retained<MTLTensorExtents>>;

        /// Setter for [`strides`][Self::strides].
        ///
        /// This is [copied][objc2_foundation::NSCopying::copy] when set.
        #[unsafe(method(setStrides:))]
        #[unsafe(method_family = none)]
        pub fn setStrides(&self, strides: Option<&MTLTensorExtents>);

        /// A data format for the tensors you create with this descriptor.
        ///
        /// The default value of this property is ``MTLTensorDataType/MTLTensorDataTypeFloat32``.
        #[unsafe(method(dataType))]
        #[unsafe(method_family = none)]
        pub fn dataType(&self) -> MTLTensorDataType;

        /// Setter for [`dataType`][Self::dataType].
        #[unsafe(method(setDataType:))]
        #[unsafe(method_family = none)]
        pub fn setDataType(&self, data_type: MTLTensorDataType);

        /// A set of contexts in which you can use tensors you create with this descriptor.
        ///
        /// The default value for this property is a bitwise `OR` of:
        /// - ``MTLTensorUsage/MTLTensorUsageRender``
        /// - ``MTLTensorUsage/MTLTensorUsageCompute``
        #[unsafe(method(usage))]
        #[unsafe(method_family = none)]
        pub fn usage(&self) -> MTLTensorUsage;

        /// Setter for [`usage`][Self::usage].
        #[unsafe(method(setUsage:))]
        #[unsafe(method_family = none)]
        pub fn setUsage(&self, usage: MTLTensorUsage);

        #[cfg(feature = "MTLResource")]
        /// A packed set of the `storageMode`, `cpuCacheMode` and `hazardTrackingMode` properties.
        #[unsafe(method(resourceOptions))]
        #[unsafe(method_family = none)]
        pub fn resourceOptions(&self) -> MTLResourceOptions;

        #[cfg(feature = "MTLResource")]
        /// Setter for [`resourceOptions`][Self::resourceOptions].
        #[unsafe(method(setResourceOptions:))]
        #[unsafe(method_family = none)]
        pub fn setResourceOptions(&self, resource_options: MTLResourceOptions);

        #[cfg(feature = "MTLResource")]
        /// A value that configures the cache mode of CPU mapping of tensors you create with this descriptor.
        ///
        /// The default value of this property is ``MTLCPUCacheMode/MTLCPUCacheModeDefaultCache``.
        #[unsafe(method(cpuCacheMode))]
        #[unsafe(method_family = none)]
        pub fn cpuCacheMode(&self) -> MTLCPUCacheMode;

        #[cfg(feature = "MTLResource")]
        /// Setter for [`cpuCacheMode`][Self::cpuCacheMode].
        #[unsafe(method(setCpuCacheMode:))]
        #[unsafe(method_family = none)]
        pub fn setCpuCacheMode(&self, cpu_cache_mode: MTLCPUCacheMode);

        #[cfg(feature = "MTLResource")]
        /// A value that configures the memory location and access permissions of tensors you create with this descriptor.
        ///
        /// The default value of this property defaults to ``MTLStorageMode/MTLStorageModeShared``.
        #[unsafe(method(storageMode))]
        #[unsafe(method_family = none)]
        pub fn storageMode(&self) -> MTLStorageMode;

        #[cfg(feature = "MTLResource")]
        /// Setter for [`storageMode`][Self::storageMode].
        #[unsafe(method(setStorageMode:))]
        #[unsafe(method_family = none)]
        pub fn setStorageMode(&self, storage_mode: MTLStorageMode);

        #[cfg(feature = "MTLResource")]
        /// A value that configures the hazard tracking of tensors you create with this descriptor.
        ///
        /// The default value of this property is ``MTLHazardTrackingMode/MTLHazardTrackingModeDefault``.
        #[unsafe(method(hazardTrackingMode))]
        #[unsafe(method_family = none)]
        pub fn hazardTrackingMode(&self) -> MTLHazardTrackingMode;

        #[cfg(feature = "MTLResource")]
        /// Setter for [`hazardTrackingMode`][Self::hazardTrackingMode].
        #[unsafe(method(setHazardTrackingMode:))]
        #[unsafe(method_family = none)]
        pub fn setHazardTrackingMode(&self, hazard_tracking_mode: MTLHazardTrackingMode);
    );
}

/// Methods declared on superclass `NSObject`.
impl MTLTensorDescriptor {
    extern_methods!(
        #[unsafe(method(init))]
        #[unsafe(method_family = init)]
        pub fn init(this: Allocated<Self>) -> Retained<Self>;

        #[unsafe(method(new))]
        #[unsafe(method_family = new)]
        pub fn new() -> Retained<Self>;
    );
}

impl DefaultRetained for MTLTensorDescriptor {
    #[inline]
    fn default_retained() -> Retained<Self> {
        Self::new()
    }
}

extern_protocol!(
    /// A resource representing a multi-dimensional array that you can use with machine learning workloads.
    ///
    /// See also [Apple's documentation](https://developer.apple.com/documentation/metal/mtltensor?language=objc)
    #[cfg(all(feature = "MTLAllocation", feature = "MTLResource"))]
    pub unsafe trait MTLTensor: MTLResource {
        #[cfg(feature = "MTLTypes")]
        /// A handle that represents the GPU resource, which you can store in an argument buffer.
        #[unsafe(method(gpuResourceID))]
        #[unsafe(method_family = none)]
        fn gpuResourceID(&self) -> MTLResourceID;

        #[cfg(feature = "MTLBuffer")]
        /// A buffer instance this tensor shares its storage with or nil if this tensor does not wrap an underlying buffer.
        #[unsafe(method(buffer))]
        #[unsafe(method_family = none)]
        fn buffer(&self) -> Option<Retained<ProtocolObject<dyn MTLBuffer>>>;

        /// An offset, in bytes, into the buffer instance this tensor shares its storage with, or zero if this tensor does not wrap an underlying buffer.
        #[unsafe(method(bufferOffset))]
        #[unsafe(method_family = none)]
        fn bufferOffset(&self) -> NSUInteger;

        /// An array of strides, in elements, one for each dimension of this tensor.
        ///
        /// This property only applies if this tensor shares its storage with a buffer, otherwise it's nil.
        #[unsafe(method(strides))]
        #[unsafe(method_family = none)]
        fn strides(&self) -> Option<Retained<MTLTensorExtents>>;

        /// An array of sizes, in elements, one for each dimension of this tensor.
        #[unsafe(method(dimensions))]
        #[unsafe(method_family = none)]
        fn dimensions(&self) -> Retained<MTLTensorExtents>;

        /// An underlying data format of this tensor.
        #[unsafe(method(dataType))]
        #[unsafe(method_family = none)]
        fn dataType(&self) -> MTLTensorDataType;

        /// A set of contexts in which you can use this tensor.
        #[unsafe(method(usage))]
        #[unsafe(method_family = none)]
        fn usage(&self) -> MTLTensorUsage;

        /// Replaces the contents of a slice of this tensor with data you provide.
        ///
        /// - Parameters:
        /// - sliceOrigin: An array of offsets, in elements, to the first element of the slice that this method writes data to.
        /// - sliceDimensions: An array of sizes, in elements, of the slice this method writes data to.
        /// - bytes: A pointer to bytes of data that this method copies into the slice you specify with `sliceOrigin` and `sliceDimensions`.
        /// - strides: An array of strides, in elements, that describes the layout of the data in `bytes`. You are responsible for ensuring `strides` meets the following requirements:
        /// - Elements of `strides`are in monotonically non-decreasing order.
        /// - For any `i` larger than zero, `strides[i]` is greater than or equal to `strides[i-1] * dimensions[i-1]`.
        ///
        /// # Safety
        ///
        /// `bytes` must be a valid pointer.
        #[unsafe(method(replaceSliceOrigin:sliceDimensions:withBytes:strides:))]
        #[unsafe(method_family = none)]
        unsafe fn replaceSliceOrigin_sliceDimensions_withBytes_strides(
            &self,
            slice_origin: &MTLTensorExtents,
            slice_dimensions: &MTLTensorExtents,
            bytes: NonNull<c_void>,
            strides: &MTLTensorExtents,
        );

        /// Copies the data corresponding to a slice of this tensor into a pointer you provide.
        ///
        /// - Parameters:
        /// - bytes: A pointer to bytes of data that this method copies into the slice you specify with `sliceOrigin` and `sliceDimensions`.
        /// - strides: An array of strides, in elements, that describes the layout of the data in `bytes`. You are responsible for ensuring `strides` meets the following requirements:
        /// - Elements of `strides`are in monotonically non-decreasing order.
        /// - For any `i` larger than zero, `strides[i]` is greater than or equal to `strides[i-1] * dimensions[i-1]`.
        /// - sliceOrigin: An array of offsets, in elements, to the first element of the slice that this method reads data from.
        /// - sliceDimensions: An array of sizes, in elements, of the slice this method reads data from.
        ///
        /// # Safety
        ///
        /// `bytes` must be a valid pointer.
        #[unsafe(method(getBytes:strides:fromSliceOrigin:sliceDimensions:))]
        #[unsafe(method_family = none)]
        unsafe fn getBytes_strides_fromSliceOrigin_sliceDimensions(
            &self,
            bytes: NonNull<c_void>,
            strides: &MTLTensorExtents,
            slice_origin: &MTLTensorExtents,
            slice_dimensions: &MTLTensorExtents,
        );
    }
);