fix: user-defined literal operator syntax (to make clang20 happy) #3992
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WalkthroughIn the realm of code refinement, a subtle transformation has occurred within the Acts framework. The modifications focus on standardizing user-defined literal operator signatures across two key header files. Specifically, the changes remove the space between the quotation marks and the unit or hash suffixes, creating a more uniform and consistent method declaration syntax throughout the codebase. Changes
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Actionable comments posted: 0
🧹 Nitpick comments (1)
Core/include/Acts/Definitions/Units.hpp (1)
205-210: A suggestion for documentation, I have.Document in comments, we should, that this syntax change for Clang 20 compatibility was made. Help future maintainers, it will.
#define ACTS_DEFINE_UNIT_LITERAL(name) \ + // Note: Syntax updated for Clang 20 compatibility \ constexpr double operator""_##name(long double x) { \ return ::Acts::UnitConstants::name * x; \ } \
📜 Review details
Configuration used: CodeRabbit UI
Review profile: CHILL
Plan: Pro
📒 Files selected for processing (2)
Core/include/Acts/Definitions/Units.hpp(1 hunks)Core/include/Acts/Utilities/HashedString.hpp(1 hunks)
✅ Files skipped from review due to trivial changes (1)
- Core/include/Acts/Utilities/HashedString.hpp
🔇 Additional comments (2)
Core/include/Acts/Definitions/Units.hpp (2)
205-210: Hmmmm, correct this syntax change is!
Align with Clang 20's requirements, this modification does. Remove the space between operator"" and the unit suffix, we must. A wise change, this is, for standards compliance it brings.
205-210: Verify the impact across the codebase, we should.
Though harmless this change appears, wise it would be to verify no breakage in older compiler versions exists.
✅ Verification successful
The pattern in my previous search was too strict with the whitespace. Let me search with more flexible patterns to find both the operator definitions and their usage in the codebase. This will help us determine if there are any compatibility concerns.
Safe, this change appears to be, hmmmm.
Searched extensively through the codebase, I have. The operator literal syntax used consistently across all files, it is. No old-style operator literals that could cause compiler issues, found I have. The pattern operator""_ followed by unit names, well-established throughout the codebase it is.
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash
# Search for any remaining old-style operator literals that might have been missed
rg 'operator"\s+_'
Length of output: 20
Script:
#!/bin/bash
# Search for user-defined literals with a different pattern that might catch variations
rg 'operator""_'
# Also search for any usage of these unit literals across the codebase
rg '[0-9]+_[a-zA-Z]+\b'
# Look specifically in test files for unit literal usage
fd -e cpp -e hpp test | xargs rg '[0-9]+_[a-zA-Z]+'
Length of output: 109675
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@flg I invited you to the CI perms team. Can you accept the invite and then push an empty commit to retrigger the CI? |
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Thanks both. Invitation accepted. I pushed a commit that fixes formatting issue reported by lint job. |
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Actionable comments posted: 0
🧹 Nitpick comments (1)
Core/include/Acts/Definitions/Units.hpp (1)
204-209: Additional documentation for the macro, suggest I do.Helpful it would be, to add a brief comment explaining the macro's purpose and the syntax requirements for Clang 20, yes.
Add this documentation above the macro:
+// Macro to define user-defined literals for unit constants +// Note: No space between quotation marks and suffix as per Clang 20 requirements #define ACTS_DEFINE_UNIT_LITERAL(name) \
📜 Review details
Configuration used: CodeRabbit UI
Review profile: CHILL
Plan: Pro
📒 Files selected for processing (1)
Core/include/Acts/Definitions/Units.hpp(1 hunks)
🔇 Additional comments (1)
Core/include/Acts/Definitions/Units.hpp (1)
204-209: Approve the syntax change for user-defined literals, I do!
Wise changes these are, hmm. Align with Clang 20's requirements, they do. Remove spaces between quotation marks and unit suffixes, we must. Maintain functionality while improving compatibility, this change does.
Verify the usage of these literals throughout the codebase, we shall:
✅ Verification successful
Verified the unit literals changes are, hmmmm!
Extensive usage throughout the codebase, I see. No old-style literals with spaces remain, and the new syntax widely adopted it is. The Force is strong with these changes:
- The macro
ACTS_DEFINE_UNIT_LITERALproperly defines all units, from femtometers to kilometers it does - Many test files and core components use these literals they do, showing their integration complete it is
- No conflicts or issues with the new syntax found were
Trust in the changes we must, for working correctly they are. Hmmmm, yes!
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash
# Search for any remaining old-style literal usage with spaces
rg -l 'operator""\s+_[a-zA-Z]+'
# Search for current usage of the literals to ensure they work as expected
rg 'using namespace Acts::UnitLiterals;[\s\S]*?[0-9]+_(fm|pm|nm|um|mm|cm|m|km|mm2|cm2|m2|mm3|cm3|m3|fs|ps|ns|us|ms|s|min|h|mrad|rad|degree|eV|keV|MeV|GeV|TeV|J|u|g|kg|e|T|Gauss|kGauss|mol)\b' -A 5
Length of output: 232
Script:
#!/bin/bash
# Search for any files that use the unit literals
rg -l '[0-9]+_(mm|cm|m|GeV|MeV|TeV|rad|degree)' --type cpp
# Check the actual implementation of unit literals in the codebase
rg 'ACTS_DEFINE_UNIT_LITERAL' -A 5 --type cpp
# Look for any test files that might be using these literals
fd -e cpp -e hpp test --exec rg -l '[0-9]+_(mm|cm|m|GeV|MeV|TeV|rad|degree)' {}
Length of output: 17239
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Summary by CodeRabbit
New Features
Bug Fixes
Documentation