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Tags: astral-sh/RustPython-Parser
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Add `TextRange` to `Identifier` (#8) ## Summary This PR adds `TextRange` to `Identifier`. Right now, the AST only includes ranges for identifiers in certain cases (`Expr::Name`, `Keyword`, etc.), namely when the identifier comprises an entire AST node. In Ruff, we do additional ad-hoc lexing to extract identifiers from source code. One frequent example: given a function `def f(): ...`, we lex to find the range of `f`, for use in diagnostics. Another: `except ValueError as e`, for which the AST doesn't include a range for `e`. Note that, as an optimization, we avoid storing the `TextRange` for `Expr::Name`, since it's already included.