Aaron Hill 6c14aad58e Improve handling of spans around macro result parse errors ... Fixes #81543 After we expand a macro, we try to parse the resulting tokens as a AST node. This commit makes several improvements to how we handle spans when an error occurs: * Only ovewrite the original `Span` if it's a dummy span. This preserves a more-specific span if one is available. * Use `self.prev_token` instead of `self.token` when emitting an error message after encountering EOF, since an EOF token always has a dummy span * Make `SourceMap::next_point` leave dummy spans unused. A dummy span does not have a logical 'next point', since it's a zero-length span. Re-using the span span preserves its 'dummy-ness' for other checks		2021-01-31 15:24:34 -05:00
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src	Improve handling of spans around macro result parse errors	2021-01-31 15:24:34 -05:00
Cargo.toml	Add SEMICOLON_IN_EXPRESSIONS_FROM_MACROS lint	2021-01-28 08:51:43 -05:00