flate: Cleanup & reduce casts #1050
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Small improvement by reducing casts for matchlen.
📝 WalkthroughWalkthroughThis pull request introduces type modifications across multiple files in the Changes
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Actionable comments posted: 0
🧹 Nitpick comments (3)
internal/le/unsafe_disabled.go (1)
29-41: LGTM! Store functions are correctly implemented.The Store functions correctly use
binary.LittleEndianfor endianness handling, ensuring consistent behavior across platforms.Consider adding examples in the documentation to show typical usage patterns:
// Store16 will store v at b. // // Example: // // b := make([]byte, 2) // Store16(b, 0x1234) // b now contains [0x34, 0x12]internal/le/unsafe_enabled.go (1)
11-16: LGTM! Efficient unsafe implementation.The implementation correctly uses unsafe pointer arithmetic for optimal performance while maintaining the same behavior as the safe version.
Consider removing the commented-out previous implementations since they're no longer needed and might cause confusion:
- //return binary.LittleEndian.Uint16(b[i:]) - //return *(*uint16)(unsafe.Pointer(&b[i]))flate/level1.go (1)
123-123: Consider using matchlen for small matches.For small matches (< 8 bytes), using
matchlenmight be more efficient thanmatchlenLongas it avoids the function call overhead.- l := e.matchlenLong(int(s+4), int(t+4), src) + 4 + // Use matchlen for small matches + l := e.matchlen(src[s+4:], src[t+4:]) + 4 + if l >= 8 { + l = e.matchlenLong(int(s+4), int(t+4), src) + 4 + }Also applies to: 126-130
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📒 Files selected for processing (9)
flate/fast_encoder.go(4 hunks)flate/level1.go(6 hunks)flate/level2.go(1 hunks)flate/level3.go(1 hunks)flate/level4.go(1 hunks)flate/level5.go(6 hunks)flate/level6.go(8 hunks)internal/le/unsafe_disabled.go(1 hunks)internal/le/unsafe_enabled.go(1 hunks)
✅ Files skipped from review due to trivial changes (1)
- flate/level3.go
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🔇 Additional comments (8)
internal/le/unsafe_disabled.go (1)
9-12: LGTM! Simple and correct implementation.The
Load8function provides a straightforward and safe way to access bytes from a slice.flate/level1.go (1)
80-80: LGTM! Improved readability with explicit offset calculation.The introduction of variable
tmakes the offset calculation clearer and reduces repeated expressions.Also applies to: 92-93
flate/level4.go (1)
130-130: LGTM! Consistent type casting.The explicit casting to
intaligns with the PR's goal of reducing unnecessary casts and maintains consistency with other level files.flate/fast_encoder.go (2)
Line range hint
139-180: LGTM! Type change improves consistency.The change from
int32tointparameters aligns better with Go's native integer type and reduces type conversions when working with slice lengths.
Line range hint
181-220: LGTM! Consistent with matchlen changes.The parameter type change to
intmaintains consistency withmatchlenand Go's native types.flate/level2.go (1)
129-129: LGTM! Necessary type cast for compatibility.The explicit casting to
intis required to match the updatedmatchlenLongsignature.flate/level6.go (1)
127-128: LGTM! Consistent type casting throughout the file.All calls to
matchlenandmatchlenLonghave been updated with appropriateintcasts to match the new method signatures.Also applies to: 151-151, 165-165, 179-179, 190-190, 210-212, 230-230, 240-240
flate/level5.go (1)
122-123: LGTM! Consistent type casting throughout the file.All calls to
matchlenandmatchlenLonghave been updated with appropriateintcasts to match the new method signatures.Also applies to: 145-145, 157-157, 168-168, 188-190, 206-206
Small improvement by reducing casts for matchlen.
Sanity check before/after...
Summary by CodeRabbit
Release Notes
Performance Improvements
New Features
lepackageLoad8,Store16,Store32, andStore64utility methodsTechnical Updates
These changes optimize the compression and byte manipulation capabilities of the library, focusing on performance and type safety.