Refactor lexing of fixed-point numbers#1915
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There's a pre-existing bug here: |
Rangi42
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Apr 4, 2026
ISSOtm
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I guess breaking apart a state machine into straight-line code is a readability win. Nice job!
ISSOtm
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Apr 5, 2026
…edPoint` This incidentally fixes a bug with too-long fixed-point literals that have precision suffixes.
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I have some more refactoring ideas. Let me know if you think this is getting too bikeshed-y.
ISSOtm
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Thanks for pulling through this! It was more painful than anticipated, huh.
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readFractionalPartwas a messy state machine with unclear correspondence to the actual fixed-point literals we accept and reject, so I refactored it.This also distinguishes between "no digits after
q" and "only0s afterq", so we no longer need to error about "significant digits".I also renamed
nonDigittoprevSeparatorin other number-parsing functions, not just the fixed-point ones.