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52 lines
1.9 KiB
Rust
52 lines
1.9 KiB
Rust
// Ensure constant and array length values are not taken from source
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// code, which wreaks havoc with macros.
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macro_rules! make {
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($n:expr) => {
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pub struct S;
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// @has issue_33302/constant.CST.html \
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// '//pre[@class="rust item-decl"]' 'pub const CST: i32'
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pub const CST: i32 = ($n * $n);
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// @has issue_33302/static.ST.html \
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// '//pre[@class="rust item-decl"]' 'pub static ST: i32'
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pub static ST: i32 = ($n * $n);
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pub trait T<X> {
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fn ignore(_: &X) {}
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const C: X;
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// @has issue_33302/trait.T.html \
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// '//pre[@class="rust item-decl"]' 'const D: i32'
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// @has - '//*[@id="associatedconstant.D"]' 'const D: i32'
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const D: i32 = ($n * $n);
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}
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// @has issue_33302/struct.S.html \
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// '//*[@class="impl"]' 'impl T<[i32; 16]> for S'
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// @has - '//*[@id="associatedconstant.C"]' 'const C: [i32; 16]'
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// @has - '//*[@id="associatedconstant.D"]' 'const D: i32'
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impl T<[i32; ($n * $n)]> for S {
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const C: [i32; ($n * $n)] = [0; ($n * $n)];
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}
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// @has issue_33302/struct.S.html \
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// '//*[@class="impl"]' 'impl T<[i32; 16]> for S'
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// @has - '//*[@id="associatedconstant.C-1"]' 'const C: (i32,)'
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// @has - '//*[@id="associatedconstant.D-1"]' 'const D: i32'
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impl T<(i32,)> for S {
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const C: (i32,) = ($n,);
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}
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// @has issue_33302/struct.S.html \
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// '//*[@class="impl"]' 'impl T<(i32, i32)> for S'
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// @has - '//*[@id="associatedconstant.C-2"]' 'const C: (i32, i32)'
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// @has - '//*[@id="associatedconstant.D-2"]' 'const D: i32'
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impl T<(i32, i32)> for S {
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const C: (i32, i32) = ($n, $n);
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const D: i32 = ($n / $n);
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}
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};
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}
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make!(4);
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