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044c99df78
Use the same error as other invalid types for `concat_bytes!`, rather than using `ConcatCStrLit` from `concat!`. Also add more information with a note about why this doesn't work, and a suggestion to use a null-terminated byte string instead.
76 lines
3.0 KiB
Rust
76 lines
3.0 KiB
Rust
//@ edition: 2021
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// 2021 edition for C string literals
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#![feature(concat_bytes)]
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fn main() {
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// Identifiers
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concat_bytes!(pie); //~ ERROR expected a byte literal
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concat_bytes!(pie, pie); //~ ERROR expected a byte literal
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// String literals
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concat_bytes!("tnrsi", "tnri"); //~ ERROR cannot concatenate string literals
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//~^ SUGGESTION b"tnrsi"
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concat_bytes!(r"tnrsi", r"tnri"); //~ ERROR cannot concatenate string literals
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//~^ SUGGESTION br"tnrsi"
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concat_bytes!(r#"tnrsi"#, r###"tnri"###); //~ ERROR cannot concatenate string literals
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//~^ SUGGESTION br#"tnrsi"#
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concat_bytes!(c"tnrsi", c"tnri"); //~ ERROR cannot concatenate C string literals
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//~^ SUGGESTION b"tnrsi\0"
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concat_bytes!(cr"tnrsi", cr"tnri"); //~ ERROR cannot concatenate C string literals
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concat_bytes!(cr#"tnrsi"#, cr###"tnri"###); //~ ERROR cannot concatenate C string literals
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// Other literals
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concat_bytes!(2.8); //~ ERROR cannot concatenate float literals
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concat_bytes!(300); //~ ERROR cannot concatenate numeric literals
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//~^ SUGGESTION [300]
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concat_bytes!('a'); //~ ERROR cannot concatenate character literals
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//~^ SUGGESTION b'a'
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concat_bytes!(true, false); //~ ERROR cannot concatenate boolean literals
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concat_bytes!(42, b"va", b'l'); //~ ERROR cannot concatenate numeric literals
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//~^ SUGGESTION [42]
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concat_bytes!(42, b"va", b'l', [1, 2]); //~ ERROR cannot concatenate numeric literals
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//~^ SUGGESTION [42]
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// Nested items
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concat_bytes!([
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"hi", //~ ERROR cannot concatenate string literals
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]);
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concat_bytes!([
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'a', //~ ERROR cannot concatenate character literals
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//~^ SUGGESTION b'a'
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]);
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concat_bytes!([
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true, //~ ERROR cannot concatenate boolean literals
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]);
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concat_bytes!([
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false, //~ ERROR cannot concatenate boolean literals
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]);
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concat_bytes!([
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2.6, //~ ERROR cannot concatenate float literals
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]);
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concat_bytes!([
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265, //~ ERROR numeric literal is out of bounds
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]);
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concat_bytes!([
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-33, //~ ERROR expected a byte literal
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]);
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concat_bytes!([
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b"hi!", //~ ERROR cannot concatenate doubly nested array
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]);
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concat_bytes!([
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[5, 6, 7], //~ ERROR cannot concatenate doubly nested array
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]);
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concat_bytes!(5u16); //~ ERROR cannot concatenate numeric literals
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//~^ SUGGESTION [5u16]
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concat_bytes!([5u16]); //~ ERROR numeric literal is not a `u8`
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concat_bytes!([3; ()]); //~ ERROR repeat count is not a positive number
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concat_bytes!([3; -2]); //~ ERROR repeat count is not a positive number
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concat_bytes!([pie; -2]); //~ ERROR repeat count is not a positive number
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concat_bytes!([pie; 2]); //~ ERROR expected a byte literal
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concat_bytes!([2.2; 0]); //~ ERROR cannot concatenate float literals
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concat_bytes!([5.5; ()]); //~ ERROR repeat count is not a positive number
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concat_bytes!([[1, 2, 3]; 3]); //~ ERROR cannot concatenate doubly nested array
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concat_bytes!([[42; 2]; 3]); //~ ERROR cannot concatenate doubly nested array
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}
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