⚡ Bolt: Optimize SVG path number parsing - #28
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- Replaces `String(slice)` allocation with zero-allocation `Substring` in `scanNumber`. - Updates `PathScanner` to retain original string reference. - Avoids creating new String objects for every coordinate in SVG path data.
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⚡ Bolt: Optimized SVG path number parsing
💡 What:
Modified
PathScannerinSVGPathParser.swiftto store the original input string.Updated
scanNumber()to slice the original string using the scanned indices (string[startIndex..<index]) instead of creating a newStringfrom theUTF8Viewslice (String(slice)).🎯 Why:
The previous implementation allocated a new
Stringfor every single number parsed in an SVG path. For complex icons or vectors with thousands of coordinates, this resulted in significant memory churn and allocation overhead.The
Doubleinitializer acceptsSubstring(which conforms toStringProtocol), so we can parse directly from a view of the original string without allocation.📊 Impact:
Significantly reduces memory allocations during SVG path parsing.
Expected to improve parsing speed for large vector assets.
🔬 Measurement:
A benchmark (failed to run due to env crash) would show reduced execution time and memory usage.
The optimization leverages Swift's
Substringcapabilities for zero-copy parsing.PR created automatically by Jules for task 3331678641723186108 started by @alexey1312