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# Description This PR adds two new `ParseError` and `ShellError` cases for type errors relating to operators. - `OperatorUnsupportedType` is used when a type is not supported by an operator in any way, shape, or form. E.g., `+` does not support `bool`. - `OperatorIncompatibleTypes` is used when a operator is used with types it supports, but the combination of types provided cannot be used together. E.g., `filesize + duration` is not a valid combination. The other preexisting error cases related to operators have been removed and replaced with the new ones above. Namely: - `ShellError::OperatorMismatch` - `ShellError::UnsupportedOperator` - `ParseError::UnsupportedOperationLHS` - `ParseError::UnsupportedOperationRHS` - `ParseError::UnsupportedOperationTernary` # User-Facing Changes - `help operators` now lists the precedence of `not` as 55 instead of 0 (above the other boolean operators). Fixes #13675. - `math median` and `math mode` now ignore NaN values so that `[NaN NaN] | math median` and `[NaN NaN] | math mode` no longer trigger a type error. Instead, it's now an empty input error. Fixing this in earnest can be left for a future PR. - Comparisons with `nan` now return false instead of causing an error. E.g., `1 == nan` is now `false`. - All the operator type errors have been standardized and reworked. In particular, they can now have a help message, which is currently used for types errors relating to `++`. ```nu [1] ++ 2 ``` ``` Error: nu::parser::operator_unsupported_type × The '++' operator does not work on values of type 'int'. ╭─[entry #1:1:5] 1 │ [1] ++ 2 · ─┬ ┬ · │ ╰── int · ╰── does not support 'int' ╰──── help: if you meant to append a value to a list or a record to a table, use the `append` command or wrap the value in a list. For example: `$list ++ $value` should be `$list ++ [$value]` or `$list | append $value`. ``` |
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Logic to resolve colors for syntax highlighting and output formatting
Internal Nushell crate
This crate implements components of Nushell and is not designed to support plugin authors or other users directly.