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a201fab208
By using `token_descr`, as is done for many other errors, we can get slightly better descriptions in error messages, e.g. "macro expansion ignores token `let` and any following" becomes "macro expansion ignores keyword `let` and any tokens following". This will be more important once invisible delimiters start being mentioned in error messages -- without this commit, that leads to error messages such as "error at ``" because invisible delimiters are pretty printed as an empty string.
60 lines
2.1 KiB
Plaintext
60 lines
2.1 KiB
Plaintext
error: expected one of `.`, `?`, or an operator, found `;`
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--> $DIR/expand-expr.rs:108:27
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LL | expand_expr_fail!("string"; hello);
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| ^ expected one of `.`, `?`, or an operator
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error: expected expression, found `$`
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--> $DIR/expand-expr.rs:111:19
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LL | expand_expr_fail!($);
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| ^ expected expression
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error: expected expression, found `$`
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--> $DIR/expand-expr.rs:112:29
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LL | expand_expr_fail!(echo_tts!($));
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| ^ expected expression
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error: expected expression, found `$`
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--> $DIR/expand-expr.rs:113:28
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LL | expand_expr_fail!(echo_pm!($));
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| ^ expected expression
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error: macro expansion ignores `hello` and any tokens following
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--> $DIR/expand-expr.rs:117:47
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LL | expand_expr_is!("string", echo_tts!("string"; hello));
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| --------------------^^^^^- caused by the macro expansion here
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= note: the usage of `echo_tts!` is likely invalid in expression context
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help: you might be missing a semicolon here
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LL | expand_expr_is!("string", echo_tts!("string"; hello););
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| +
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error: macro expansion ignores `;` and any tokens following
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--> $DIR/expand-expr.rs:118:44
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LL | expand_expr_is!("string", echo_pm!("string"; hello));
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| -----------------^------- caused by the macro expansion here
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= note: the usage of `echo_pm!` is likely invalid in expression context
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help: you might be missing a semicolon here
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LL | expand_expr_is!("string", echo_pm!("string"; hello););
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| +
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error: recursion limit reached while expanding `recursive_expand!`
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--> $DIR/expand-expr.rs:126:16
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LL | const _: u32 = recursive_expand!();
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| ^^^^^^^^^^^^^^^^^^^
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= help: consider increasing the recursion limit by adding a `#![recursion_limit = "256"]` attribute to your crate (`expand_expr`)
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= note: this error originates in the macro `recursive_expand` (in Nightly builds, run with -Z macro-backtrace for more info)
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error: aborting due to 7 previous errors
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