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morealclaude
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Improve json.loads performance (#6704)
* Parse JSON in Rust * Reuse key when decoding JSON * Unmark resolved test * Parse null/true/false directly in call_scan_once Parse JSON constants (null, true, false) directly in Rust within call_scan_once() instead of falling back to Python scan_once. This reduces Python-Rust boundary crossings for array/object values. Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com> * Parse numbers directly in call_scan_once Parse JSON numbers starting with digits (0-9) directly in Rust within call_scan_once() by reusing the existing parse_number() method. This reduces Python-Rust boundary crossings for array/object values. Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com> * Parse NaN/Infinity/-Infinity in call_scan_once Parse special JSON constants (NaN, Infinity, -Infinity) and negative numbers directly in Rust within call_scan_once(). This handles: - 'N' -> NaN via parse_constant callback - 'I' -> Infinity via parse_constant callback - '-' -> -Infinity or negative numbers via parse_constant/parse_number This reduces Python-Rust boundary crossings for array/object values. Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com> * Correct wrong index access * Leave more flame span * Refactor json scanstring with byte index --------- Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>
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‎Lib/test/test_json/test_decode.py‎

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@@ -138,8 +138,6 @@ def test_limit_int(self):
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class TestPyDecode(TestDecode, PyTest): pass
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class TestCDecode(TestDecode, CTest):
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# TODO: RUSTPYTHON
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@unittest.expectedFailure
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def test_keys_reuse(self):
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return super().test_keys_reuse()
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