#pragma clang diagnostic ignored "-Wmissing-prototypes"
#pragma clang diagnostic ignored "-Wmissing-braces"

#include <metal_stdlib>
#include <simd/simd.h>

using namespace metal;

template<typename T, size_t Num>
struct spvUnsafeArray
{
    T elements[Num ? Num : 1];
    
    thread T& operator [] (size_t pos) thread
    {
        return elements[pos];
    }
    constexpr const thread T& operator [] (size_t pos) const thread
    {
        return elements[pos];
    }
    
    device T& operator [] (size_t pos) device
    {
        return elements[pos];
    }
    constexpr const device T& operator [] (size_t pos) const device
    {
        return elements[pos];
    }
    
    constexpr const constant T& operator [] (size_t pos) const constant
    {
        return elements[pos];
    }
    
    threadgroup T& operator [] (size_t pos) threadgroup
    {
        return elements[pos];
    }
    constexpr const threadgroup T& operator [] (size_t pos) const threadgroup
    {
        return elements[pos];
    }
};

#ifndef SPIRV_CROSS_CONSTANT_ID_0
#define SPIRV_CROSS_CONSTANT_ID_0 100
#endif
constant int a = SPIRV_CROSS_CONSTANT_ID_0;
#ifndef SPIRV_CROSS_CONSTANT_ID_1
#define SPIRV_CROSS_CONSTANT_ID_1 200
#endif
constant int b = SPIRV_CROSS_CONSTANT_ID_1;

struct A
{
    spvUnsafeArray<int, a> member0;
    spvUnsafeArray<int, b> member1;
};

struct B
{
    spvUnsafeArray<int, b> member0;
    spvUnsafeArray<int, a> member1;
};

#ifndef SPIRV_CROSS_CONSTANT_ID_2
#define SPIRV_CROSS_CONSTANT_ID_2 300
#endif
constant int c = SPIRV_CROSS_CONSTANT_ID_2;
constant int d = (c + 50);

struct SSBO
{
    A member_a;
    B member_b;
    spvUnsafeArray<int, a> v;
    spvUnsafeArray<int, d> w;
};

constant int e_tmp [[function_constant(3)]];
constant int e = is_function_constant_defined(e_tmp) ? e_tmp : 400;
constant uint3 gl_WorkGroupSize [[maybe_unused]] = uint3(1u);

kernel void main0(device SSBO& _22 [[buffer(0)]], uint3 gl_GlobalInvocationID [[thread_position_in_grid]])
{
    _22.w[gl_GlobalInvocationID.x] += (_22.v[gl_GlobalInvocationID.x] + e);
}