microsoft / microsoft/DirectXShaderCompiler

[HLSL 2021] Setter array subscript operator overload

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hlsl-next
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C++
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Description

Hi,

How can I implement a setter array subscript operator overload? A getter works like this but doesn't require references like C does.

Thanks,
Tom

struct MyArray {
  float4 A[MAX_SIZE];
  
  float4 operator[](int ix) {
    if (ix >= MAX_SIZE)
      return 0.0;
    return A[ix];
  };
};

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Research direction

Start by reviewing the HLSL 2021 operator-overloading rules and the compiler's existing array-subscript getter handling. Determine whether setter subscripting is supported or requires a language and code-generation design; completion should include an agreed syntax and behavior, with corresponding compiler tests.

Written by the indexing model from the issue text.

Assessment

Tech stack
cpp
Domain
compilers
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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