Improve `json.loads` performance#6704

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RustPython:mainfrom

moreal:improve-json-perf

Jan 15, 2026

Commits on Jan 15, 2026

Parse JSON in Rust

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Reuse key when decoding JSON

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Unmark resolved test

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Parse null/true/false directly in call_scan_once

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Parse numbers directly in call_scan_once

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Parse NaN/Infinity/-Infinity in call_scan_once

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Correct wrong index access

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Leave more flame span

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Refactor json scanstring with byte index

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