/*! \file */
/*******************************************
 *                                         *
 *  File auto-generated by `::safer_ffi`.  *
 *                                         *
 *  Do not manually edit this file.        *
 *                                         *
 *******************************************/

#pragma warning disable IDE0044, IDE0049, IDE0055, IDE1006,
#pragma warning disable SA1004, SA1008, SA1023, SA1028,
#pragma warning disable SA1121, SA1134,
#pragma warning disable SA1201,
#pragma warning disable SA1300, SA1306, SA1307, SA1310, SA1313,
#pragma warning disable SA1500, SA1505, SA1507,
#pragma warning disable SA1600, SA1601, SA1604, SA1605, SA1611, SA1615, SA1649,

namespace Slang
{
    using System;
    using System.Runtime.InteropServices;

    public unsafe partial class Ffi
    {
#if IOS
        private const string RustLib = "slang.framework/slang";
#else
        public const string RustLib = "slang_compiler.dll";
#endif
    }

    /// <summary>
    /// <c>&'lt [T]</c> but with a guaranteed <c>#[repr(C)]</c> layout.
    ///
    /// # C layout (for some given type T)
    ///
    /// ```c
    /// typedef struct {
    /// // Cannot be NULL
    /// T * ptr;
    /// size_t len;
    /// } slice_T;
    /// ```
    ///
    /// # Nullable pointer?
    ///
    /// If you want to support the above typedef, but where the <c>ptr</c> field is
    /// allowed to be <c>NULL</c> (with the contents of <c>len</c> then being undefined)
    /// use the <c>Option< slice_ptr<_> ></c> type.
    /// </summary>
    [StructLayout(LayoutKind.Sequential, Size = 16)]
    public unsafe struct slice_ref_uint16_t
    {
        /// <summary>
        /// Pointer to the first element (if any).
        /// </summary>
        public UInt16 /*const*/
        * ptr;

        /// <summary>
        /// Element count
        /// </summary>
        public UIntPtr len;
    }

    /// <summary>
    /// Same as [<c>Vec<T></c>][<c>rust::Vec</c>], but with guaranteed <c>#[repr(C)]</c> layout
    /// </summary>
    [StructLayout(LayoutKind.Sequential, Size = 24)]
    public unsafe struct Vec_uint8_t
    {
        public byte* ptr;

        public UIntPtr len;

        public UIntPtr cap;
    }

    public unsafe partial class Ffi
    {
        /// <summary>
        /// C# handles strings as UTF16. We do NOT want to allocate that memory in C# because
        /// we want to avoid GC. So we pass it to Rust to handle all the memory allocations.
        /// This should result in the ability to compile many times without triggering frame drops
        /// from the GC from a <c>GetBytes()</c> call on a string in C#.
        /// </summary>
        [DllImport(RustLib, ExactSpelling = true)]
        public static extern unsafe Vec_uint8_t compile_from_string(slice_ref_uint16_t input);
    }

    [StructLayout(LayoutKind.Sequential, Size = 64)]
    public unsafe struct FfiToken_t
    {
        public Vec_uint8_t tooltip;

        public Vec_uint8_t error;

        public Int32 column;

        public Int32 length;

        public UInt32 token_kind;
    }

    /// <summary>
    /// Same as [<c>Vec<T></c>][<c>rust::Vec</c>], but with guaranteed <c>#[repr(C)]</c> layout
    /// </summary>
    [StructLayout(LayoutKind.Sequential, Size = 24)]
    public unsafe struct Vec_FfiToken_t
    {
        public FfiToken_t* ptr;

        public UIntPtr len;

        public UIntPtr cap;
    }

    public unsafe partial class Ffi
    {
        [DllImport(RustLib, ExactSpelling = true)]
        public static extern unsafe void free_ffi_token_vec(Vec_FfiToken_t v);
    }

    public unsafe partial class Ffi
    {
        [DllImport(RustLib, ExactSpelling = true)]
        public static extern unsafe void free_string(Vec_uint8_t s);
    }

    public unsafe partial class Ffi
    {
        /// <summary>
        /// C# handles strings as UTF16. We do NOT want to allocate that memory in C# because
        /// we want to avoid GC. So we pass it to Rust to handle all the memory allocations.
        /// This should result in the ability to tokenize many times without triggering frame drops
        /// from the GC from a <c>GetBytes()</c> call on a string in C#.
        /// </summary>
        [DllImport(RustLib, ExactSpelling = true)]
        public static extern unsafe Vec_FfiToken_t tokenize_line(slice_ref_uint16_t input);
    }
} /* Slang */