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226edf64fa
Attribute values must be literals. The error you get when that doesn't hold is pretty bad, e.g.: ``` unexpected expression: 1 + 1 ``` You also get the same error if the attribute value is a literal, but an invalid literal, e.g.: ``` unexpected expression: "foo"suffix ``` This commit does two things. - Changes the error message to "attribute value must be a literal", which gives a better idea of what the problem is and how to fix it. It also no longer prints the invalid expression, because the carets below highlight it anyway. - Separates the "not a literal" case from the "invalid literal" case. Which means invalid literals now get the specific error at the literal level, rather than at the attribute level.
31 lines
968 B
Plaintext
31 lines
968 B
Plaintext
error: attribute value must be a literal
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--> $DIR/key-value-expansion.rs:21:6
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LL | bug!((column!()));
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| ^^^^^^^^^^^
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error: attribute value must be a literal
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--> $DIR/key-value-expansion.rs:27:14
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LL | bug!("bug" + stringify!(found));
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| ^^^^^^^^^^^^^^^^^^^^^^^^^
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...
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LL | bug!();
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| ------ in this macro invocation
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= note: this error originates in the macro `bug` (in Nightly builds, run with -Z macro-backtrace for more info)
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error: attribute value must be a literal
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--> $DIR/key-value-expansion.rs:48:23
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LL | doc_comment! {format!("{coor}", coor = stringify!($t1)).as_str()}
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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...
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LL | some_macro!(u8);
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| --------------- in this macro invocation
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= note: this error originates in the macro `some_macro` (in Nightly builds, run with -Z macro-backtrace for more info)
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error: aborting due to 3 previous errors
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