Cleanup and modernize ebpf_domain #690
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Signed-off-by: Elazar Gershuni <[email protected]>
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Actionable comments posted: 8
📜 Review details
Configuration used: CodeRabbit UI
Review profile: ASSERTIVE
📒 Files selected for processing (6)
- src/crab/dsl_syntax.hpp (0 hunks)
- src/crab/ebpf_domain.hpp (8 hunks)
- src/crab/interval.hpp (1 hunks)
- src/crab/linear_expression.hpp (4 hunks)
- src/crab_utils/num_big.hpp (1 hunks)
- src/crab_utils/num_extended.hpp (1 hunks)
💤 Files not reviewed due to no reviewable changes (1)
- src/crab/dsl_syntax.hpp
🔇 Additional comments (16)
src/crab_utils/num_extended.hpp (1)
46-46: Verify usage of the new constructor in the codebase.The new constructor provides a more direct way to construct
extended_numberfrom integral types. To ensure it's being used effectively and doesn't introduce any unintended behavior:
- Check for any existing code that might benefit from this new constructor.
- Verify that there are no unexpected implicit conversions in the codebase due to this addition.
Run the following script to find potential uses of the new constructor and verify its impact:
src/crab_utils/num_big.hpp (2)
262-262: LGTM: Correct implementation ofoperator<=for integral types.The overload is correctly implemented, allowing comparisons between integral types and
number_tobjects. It maintains consistency with existing comparison operators.
262-266: Summary: Good additions enhancingnumber_tfunctionality.These changes improve the
number_tclass by:
- Adding comparison capabilities with integral and enum types.
- Introducing a concept that combines integral types and
number_t, useful for future template work.These additions will make the
number_tclass more versatile and easier to use in various contexts. The changes are well-implemented and consistent with the existing codebase.To ensure these changes don't introduce any unintended side effects, please run the following verification script:
This script will help identify any existing code that might be affected by these changes, allowing for necessary adjustments if needed.
✅ Verification successful
Verification Successful: No Conflicting Usages Found
The introduced operator overloads and the
finite_integralconcept do not conflict with existing code outside ofsrc/crab_utils/num_big.hpp. No unintended side effects were detected.🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Description: Check for any existing usages of operator<= with number_t # that might be affected by the new overloads. # Test: Search for existing operator<= usages with number_t echo "Checking for existing operator<= usages with number_t:" rg --type cpp "operator<=.*number_t" --glob '!src/crab_utils/num_big.hpp' # Test: Search for potential usages of the new concept echo "Checking for potential usages of the finite_integral concept:" rg --type cpp "finite_integral" --glob '!src/crab_utils/num_big.hpp'Length of output: 722
src/crab/ebpf_domain.hpp (11)
27-27: LGTM: Constructor signature simplifiedThe removal of the
crab::namespace prefix from the constructor parameters improves code readability and aligns with the PR's cleanup objective.
38-38: LGTM: Improved const-correctness foroperator<=Adding the
constqualifier to theoperator<=function enhances const-correctness and allows the function to be called on const objects. This is a good practice for member functions that don't modify the object's state.
46-48: LGTM: Improved const-correctness and simplified namespace usageThe changes to
widen,widening_thresholds, andnarrowfunctions improve const-correctness by addingconstqualifiers where appropriate. The removal of thecrab::namespace prefix fromthresholds_tis consistent with other changes in the file and simplifies the code.
52-52: LGTM: Improved const-correctness forget_loop_count_upper_boundAdding the
constqualifier to theget_loop_count_upper_boundfunction is appropriate for a getter that doesn't modify the object's state. This change enhances const-correctness and is in line with best practices.
56-56: LGTM: Improved const-correctness forto_setThe addition of the
constqualifier to theto_setfunction enhances const-correctness. This is appropriate for a function that doesn't modify the object's state and allows it to be called on const objects.
88-88: LGTM: Improved efficiency forinitialize_loop_counterChanging the
label_tparameter to aconstreference in theinitialize_loop_counterfunction can improve performance by avoiding unnecessary copies. This change aligns with modern C++ practices and the PR's modernization objective.
100-105: LGTM: Improved const-correctness for arithmetic and bitwise operationsThe addition of
constqualifiers to various arithmetic and bitwise operation functions enhances const-correctness. These changes are consistent with the modifications made to other member functions and align with best practices for C++.
176-181: LGTM: Improved const-correctness for memory access check functionsThe addition of
constqualifiers tocheck_access_stack,check_access_context,check_access_packet, andcheck_access_sharedfunctions enhances const-correctness. These changes are consistent with the modifications made to other member functions and align with best practices for C++.
183-184: LGTM: Improved const-correctness forrecompute_stack_numeric_sizefunctionsThe addition of
constqualifiers to therecompute_stack_numeric_sizefunctions enhances const-correctness. These changes are consistent with the modifications made to other member functions and align with best practices for C++.
Line range hint
1-265: Summary: Successful cleanup and modernizationOverall, the changes in this file successfully achieve the PR objectives of cleanup and modernization. The consistent application of const-correctness to member functions and the simplification of namespace usage improve code quality and readability. These changes align well with modern C++ practices.
Key improvements:
- Enhanced const-correctness across numerous member functions.
- Simplified namespace usage by removing redundant
crab::prefixes.- Minor parameter type updates for improved flexibility and efficiency.
While no major issues were found, it's recommended to verify the implementation of the
ashrandadd_extra_invariantfunctions to ensure they correctly handle the updated parameter types.Great job on improving the code quality!
207-212: LGTM with suggestion: Verify implementation ofadd_extra_invariantThe removal of
crab::namespace prefixes from member variable types and theadd_extra_invariantfunction signature simplifies the code and is consistent with other changes. The addition of theconstqualifier toadd_extra_invariantimproves const-correctness.Please ensure that the implementation of the
add_extra_invariantfunction correctly handles theconst NumAbsDomain& dstparameter, as this change might impact how the function operates on thedstobject.Also applies to: 253-255
✅ Verification successful
Verified:
add_extra_invariantImplementation Maintains Const-CorrectnessThe
add_extra_invariantfunction correctly uses theconstqualifier for thedstparameter. Additionally, bothhas_typeandeval_intervalmethods invoked within the function are properly marked asconst, ensuring that no unintended modifications occur.No further issues were found regarding const-correctness in the implementation.
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Description: Verify the implementation of the add_extra_invariant function # Test: Search for the add_extra_invariant function implementation echo "Searching for add_extra_invariant function implementation:" rg --type cpp -A 15 "void\s+add_extra_invariant\s*\(" # Test: Search for calls to the add_extra_invariant function echo "Searching for calls to add_extra_invariant function:" rg --type cpp "add_extra_invariant\s*\("Length of output: 2416
Script:
#!/bin/bash # Description: Verify the implementation of the add_extra_invariant function in ebpf_domain.cpp # Search for the add_extra_invariant function implementation in ebpf_domain.cpp echo "Extracting add_extra_invariant implementation:" rg --type cpp "void\s+ebpf_domain_t::TypeDomain::add_extra_invariant\s*\(" -A 20 src/crab/ebpf_domain.cppLength of output: 1435
Script:
#!/bin/bash # Description: Verify that has_type and eval_interval methods in NumAbsDomain are const # Search for the has_type method declaration in NumAbsDomain echo "Verifying has_type method is const in NumAbsDomain:" rg --type cpp "bool\s+has_type\s*\(.*\)\s+const" src/crab/num_abs_domain.hpp # Search for the eval_interval method declaration in NumAbsDomain echo "Verifying eval_interval method is const in NumAbsDomain:" rg --type cpp "interval_t\s+eval_interval\s*\(.*\)\s+const" src/crab/num_abs_domain.hppLength of output: 540
Script:
#!/bin/bash # Description: Broadly search for has_type and eval_interval method declarations in NumAbsDomain # Search for the has_type method declaration within any file in the codebase echo "Verifying has_type method is const in NumAbsDomain across the codebase:" rg --type cpp "bool\s+has_type\s*\(.*\)\s+const" # Search for the eval_interval method declaration within any file in the codebase echo "Verifying eval_interval method is const in NumAbsDomain across the codebase:" rg --type cpp "interval_t\s+eval_interval\s*\(.*\)\s+const"Length of output: 958
src/crab/interval.hpp (1)
59-59: Verify usage and consider refactoring opportunities.The new constructor provides a convenient way to create intervals from integral types. To fully leverage this addition:
- Verify that the new constructor is being used where appropriate throughout the codebase.
- Look for opportunities to simplify existing code by using this constructor instead of more verbose interval creations.
To help with this, you can run the following script to find potential refactoring opportunities:
This script will help identify places where the new constructor could potentially be used to simplify the code.
✅ Verification successful
To address the regex errors, please run the updated scripts below with the
--pcre2flag enabled:
Verification successful: No instances of the new constructor found.
The search did not identify any usages of the new
interval_tconstructor with identical integral arguments or withbound_t. Therefore, no refactoring is necessary at this time.🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Description: Find potential places to use the new integral constructor # Search for interval_t construction with two identical integral arguments rg --type cpp -e 'interval_t\s*\(\s*(\d+)\s*,\s*\1\s*\)' -g '!src/crab/interval.hpp' # Search for interval_t construction with bound_t and identical integral arguments rg --type cpp -e 'interval_t\s*\(\s*bound_t\s*\{\s*(\d+)\s*\}\s*,\s*bound_t\s*\{\s*\1\s*\}\s*\)' -g '!src/crab/interval.hpp'Length of output: 758
Script:
#!/bin/bash # Description: Find potential places to use the new integral constructor with PCRE2 enabled # Search for interval_t construction with two identical integral arguments rg --pcre2 --type cpp -e 'interval_t\s*\(\s*(\d+)\s*,\s*\1\s*\)' -g '!src/crab/interval.hpp' # Search for interval_t construction with bound_t and identical integral arguments rg --pcre2 --type cpp -e 'interval_t\s*\(\s*bound_t\s*\{\s*(\d+)\s*\}\s*,\s*bound_t\s*\{\s*\1\s*\}\s*\)' -g '!src/crab/interval.hpp'Length of output: 229
src/crab/linear_expression.hpp (1)
114-114: Ensure proper usage of 'finite_integral' in 'subtract' methodThe
subtractmethod signature has been updated:linear_expression_t subtract(const finite_integral auto& constant) const {Confirm that
finite_integralis the appropriate concept for this parameter and that it does not inadvertently exclude valid types previously supported bynumber_t. Additionally, ensure all usages of this method are compatible with the new parameter type.Run the following script to find all invocations of
subtractand their argument types:#!/bin/bash # Description: Locate all calls to 'subtract' and review argument types. # Test: Find all usages of 'subtract' with a single argument. rg --type-add 'cpp:*.cpp' --type cpp 'subtract\(\s*[^\s].*\s*\)' .
Signed-off-by: Elazar Gershuni <[email protected]>
elazarg
changed the title
Signed-off-by: Elazar Gershuni <[email protected]>
Summary by CodeRabbit
New Features
interval_t,extended_number, andlinear_expression_tinstances using integral types.number_t.Bug Fixes
linear_expression_tandnumber_t, simplifying interactions.Documentation
constqualifiers for better clarity and understanding.