abc8812df0
This is an implementation of P1061 Structure Bindings Introduce a Pack without the ability to use packs outside of templates. There is a couple of ways the AST could have been sliced so let me know what you think. The only part of this change that I am unsure of is the serialization/deserialization stuff. I followed the implementation of other Exprs, but I do not really know how it is tested. Thank you for your time considering this. --------- Co-authored-by: Yanzuo Liu <zwuis@outlook.com>
26 lines
1.2 KiB
C++
26 lines
1.2 KiB
C++
// RUN: %clang_cc1 -std=c++2c -verify -fsyntax-only %s
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template <unsigned N>
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void decompose_array() {
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int arr[4] = {1, 2, 3, 5};
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auto [x, ... // #1
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rest, ...more_rest] = arr; // expected-error{{multiple packs in structured binding declaration}}
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// expected-note@#1{{previous binding pack specified here}}
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auto [y...] = arr; // expected-error{{'...' must immediately precede declared identifier}}
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auto [...] = arr; // #2
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// expected-error@#2{{expected identifier}}
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// expected-error@#2{{{no names were provided}}}
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// expected-warning@#2{{{does not allow a decomposition group to be empty}}}
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auto [a, ..., b] = arr; // #3
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// expected-error@#3{{expected identifier}}
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// expected-error@#3{{{only 1 name was provided}}}
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auto [a1, ...] = arr; // #4
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// expected-error@#4{{expected identifier}}
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// expected-error@#4{{{only 1 name was provided}}}
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auto [..., b] = arr; // #5
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// expected-error@#5{{expected identifier}}
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// expected-error@#5{{{no names were provided}}}
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}
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