refactor: Create accepting NFA states using RAII.#84
refactor: Create accepting NFA states using RAII.#84davidlion merged 30 commits intoy-scope:mainfrom
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WalkthroughThe changes refactor state creation and transition handling in the NFA system. The Changes
Sequence Diagram(s)sequenceDiagram
participant LR as LexicalRule
participant NFA as Nfa
participant NS as NfaState
LR->>NFA: add_to_nfa(nfa)
NFA->>NS: new_accepting_state(m_variable_id)
NS-->>NFA: Return new state
NFA-->>LR: NFA updated with accepting state
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Actionable comments posted: 1
🔭 Outside diff range comments (1)
CMakeLists.txt (1)
1-1:⚠️ Potential issueUpdate CMake minimum version to ensure future compatibility.
The current minimum version (3.5.1) will be incompatible with future CMake versions.
Apply this diff to update the minimum version:
-cmake_minimum_required(VERSION 3.5.1) +cmake_minimum_required(VERSION 3.10)🧰 Tools
🪛 GitHub Actions: Build
[warning] 1-1: Compatibility with CMake < 3.10 will be removed from a future version of CMake. Update the VERSION argument value.
🧹 Nitpick comments (4)
src/log_surgeon/finite_automata/NfaState.hpp (1)
92-92: Returning a bool by const reference may be unnecessary.
It is typically more common to return a simpleboolby value. Returningbool const&can be confusing and rarely provides performance benefits.- [[nodiscard]] auto is_accepting() const -> bool const& { return m_accepting; } + [[nodiscard]] auto is_accepting() const -> bool { return m_accepting; }src/log_surgeon/finite_automata/TagOperation.hpp (1)
40-49: Add a default case to handle future enum values.The switch statement should include a default case to handle any future additions to the
TagOperationTypeenum.[[nodiscard]] auto serialize() const -> std::string { switch (m_type) { case TagOperationType::Set: return fmt::format("{}{}", m_tag_id, "p"); case TagOperationType::Negate: return fmt::format("{}{}", m_tag_id, "n"); case TagOperationType::None: return "none"; + default: + throw std::runtime_error("Unknown TagOperationType"); } }src/log_surgeon/finite_automata/SpontaneousTransition.hpp (1)
53-55: Consider a more idiomatic approach while maintaining the guideline.While following the guideline for
false ==comparison, the code could be more idiomatic.- if (false == state_ids.contains(m_dest_state)) { + if (false == state_ids.contains(m_dest_state) || nullptr == m_dest_state) { return std::nullopt; }tests/test-nfa.cpp (1)
24-81: Consider adding test cases for failure scenarios.The test thoroughly covers the success path, but it would be beneficial to add test cases that verify:
- Invalid NFA states
- Serialization failures
- Edge cases in the NFA structure
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📒 Files selected for processing (11)
CMakeLists.txt(1 hunks)src/log_surgeon/Lexer.hpp(1 hunks)src/log_surgeon/LexicalRule.hpp(1 hunks)src/log_surgeon/finite_automata/Dfa.hpp(1 hunks)src/log_surgeon/finite_automata/Nfa.hpp(7 hunks)src/log_surgeon/finite_automata/NfaState.hpp(6 hunks)src/log_surgeon/finite_automata/RegexAST.hpp(4 hunks)src/log_surgeon/finite_automata/SpontaneousTransition.hpp(1 hunks)src/log_surgeon/finite_automata/TagOperation.hpp(1 hunks)tests/CMakeLists.txt(1 hunks)tests/test-nfa.cpp(2 hunks)
✅ Files skipped from review due to trivial changes (2)
- src/log_surgeon/Lexer.hpp
- src/log_surgeon/finite_automata/Dfa.hpp
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**/*.{cpp,hpp,java,js,jsx,ts,tsx}: - Prefer false == <expression> rather than !<expression>.
src/log_surgeon/LexicalRule.hppsrc/log_surgeon/finite_automata/TagOperation.hppsrc/log_surgeon/finite_automata/Nfa.hppsrc/log_surgeon/finite_automata/RegexAST.hppsrc/log_surgeon/finite_automata/SpontaneousTransition.hpptests/test-nfa.cppsrc/log_surgeon/finite_automata/NfaState.hpp
**/*.{cpp,hpp,java,js,jsx,ts,tsx}: - Prefer false == <expression> rather than !<expression>.
src/log_surgeon/LexicalRule.hppsrc/log_surgeon/finite_automata/TagOperation.hppsrc/log_surgeon/finite_automata/Nfa.hppsrc/log_surgeon/finite_automata/RegexAST.hppsrc/log_surgeon/finite_automata/SpontaneousTransition.hpptests/test-nfa.cppsrc/log_surgeon/finite_automata/NfaState.hpp🧠 Learnings (4)
CMakeLists.txt (1)
Learnt from: SharafMohamed
PR: y-scope/log-surgeon#47
File: src/log_surgeon/finite_automata/TaggedTransition.hpp:16-37
Timestamp: 2024-11-10T16:46:58.543Z
Learning: In `src/log_surgeon/finite_automata/TaggedTransition.hpp`, the classes `PositiveTaggedTransition` and `NegativeTaggedTransition` currently do not share enough functionality to justify refactoring into a common base class.
tests/CMakeLists.txt (1)
Learnt from: SharafMohamed
PR: y-scope/log-surgeon#47
File: src/log_surgeon/finite_automata/TaggedTransition.hpp:16-37
Timestamp: 2024-11-10T16:46:58.543Z
Learning: In `src/log_surgeon/finite_automata/TaggedTransition.hpp`, the classes `PositiveTaggedTransition` and `NegativeTaggedTransition` currently do not share enough functionality to justify refactoring into a common base class.
src/log_surgeon/finite_automata/RegexAST.hpp (2)
Learnt from: SharafMohamed
PR: y-scope/log-surgeon#48
File: src/log_surgeon/finite_automata/RegexNFAState.hpp:0-0
Timestamp: 2024-11-13T20:02:13.737Z
Learning: In `src/log_surgeon/finite_automata/RegexNFAState.hpp`, the constructor `RegexNFAState(std::set<Tag const*> tags, RegexNFAState const* dest_state)` has been updated to use `std::vector<Tag const*> tags` instead of `std::set`.
Learnt from: SharafMohamed
PR: y-scope/log-surgeon#48
File: src/log_surgeon/finite_automata/RegexAST.hpp:700-700
Timestamp: 2024-11-13T22:38:19.472Z
Learning: In `RegexASTCapture`, `m_tag` must always be non-null.
src/log_surgeon/finite_automata/NfaState.hpp (1)
Learnt from: SharafMohamed
PR: y-scope/log-surgeon#48
File: src/log_surgeon/finite_automata/RegexNFAState.hpp:0-0
Timestamp: 2024-11-13T20:02:13.737Z
Learning: In `src/log_surgeon/finite_automata/RegexNFAState.hpp`, the constructor `RegexNFAState(std::set<Tag const*> tags, RegexNFAState const* dest_state)` has been updated to use `std::vector<Tag const*> tags` instead of `std::set`.
🪛 GitHub Actions: Build
CMakeLists.txt
[warning] 1-1: Compatibility with CMake < 3.10 will be removed from a future version of CMake. Update the VERSION argument value.
tests/CMakeLists.txt
[warning] 1-1: Compatibility with CMake < 3.10 will be removed from a future version of CMake. Update the VERSION argument value.
src/log_surgeon/finite_automata/Nfa.hpp
[error] 141-141: Out-of-line definition of 'new_accepting_state' does not match any declaration in 'Nfa'.
🔇 Additional comments (19)
src/log_surgeon/finite_automata/NfaState.hpp (7)
4-4: No issues with the newly added headers.
They appear necessary for the introduced structures and functions, and they conform to typical practice.Also applies to: 9-9, 13-13, 15-15, 18-18, 21-21, 24-24
40-40: Instantiation of default constructor seems fine.
No issues found.
42-44: Accepting state constructor is clearly defined.
This addition cleanly sets the state to accepting and the matching variable ID as needed.
46-52: Constructor with TagOperation logic is coherent.
It creates a new state and delegates toadd_spontaneous_transition(...). Implementation looks correct.
54-65: Spontaneous transition addition is well-structured.
Reserving capacity fortag_opsand then moving intom_spontaneous_transitionsis efficient and clear.
178-179: Epsilon closure logic is correct.
Pushing spontaneous transitions onto the stack properly ensures correct closure computation.
201-208: Optional check ensures safe serialization flow.
Returningstd::nulloptearly prevents partial or invalid output.src/log_surgeon/finite_automata/Nfa.hpp (3)
6-6: Included headers look appropriate.
No redundant elements detected.Also applies to: 15-15, 18-18, 20-20
206-208: Spontaneous transitions handled in BFS.
This complements the new transition mechanism nicely. No issues found.
224-229: Serializing states with optional return is robust.
Thestd::nulloptcheck is a sound approach for failure signalling.src/log_surgeon/finite_automata/RegexAST.hpp (3)
24-24: New include for TagOperation is justified.
It corresponds with the usage ofTagOperationTypereferences.
114-127: Revised logic for negative captures is coherent.
Switching to spontaneous transitions aligns with the updated NFA model.
910-949: Capture group NFA construction is logically consistent.
The commented diagram clarifies spontaneous transitions for start and end tags. No immediate issues.src/log_surgeon/LexicalRule.hpp (1)
43-46: Great use of RAII principles!The refactoring improves state initialization by combining state creation and accepting state setup into a single operation, making the code more robust and less error-prone.
src/log_surgeon/finite_automata/TagOperation.hpp (1)
13-17: Well-structured enum class definition!The use of an enum class with uint8_t as the underlying type is a good choice for type safety and memory efficiency.
src/log_surgeon/finite_automata/SpontaneousTransition.hpp (1)
23-31: Well-designed class with clear constructors!The class design is clean with good use of move semantics in the constructor taking tag operations.
tests/test-nfa.cpp (1)
64-68: Good improvement in error handling!The change to handle optional serialization result makes the test more robust by explicitly checking for successful serialization.
tests/CMakeLists.txt (1)
12-14:Details
❓ Verification inconclusive
LGTM! Verify test coverage for the new transition model.
The changes reflect the transition from tagged to spontaneous transitions, aligning with the PR objectives.
Run the following script to verify test coverage for the new transition model:
🏁 Script executed:
#!/bin/bash # Description: Check test coverage for the new transition model. # Test: Search for test cases using SpontaneousTransition rg -A 5 'SpontaneousTransition' test-nfa.cpp # Test: Search for test cases using TagOperation rg -A 5 'TagOperation' test-nfa.cppLength of output: 186
Action: Verify Comprehensive Test Coverage for the New Transition Model
The changes in
tests/CMakeLists.txtcorrectly reflect the PR objectives by updating source file references from the tagged to the spontaneous transition model. However, the initial test coverage script targeted a non-existent file (test-nfa.cpp), as confirmed by the error output. This makes it unclear whether tests usingSpontaneousTransitionandTagOperationexist elsewhere in the repository.
- Next Steps:
Manually verify that test cases covering the new transition model exist.
Alternatively, update the test coverage script to search across the entire tests directory. For instance:
#!/bin/bash # Re-verify test coverage by searching all test files in the tests directory fd -e cpp tests | xargs rg -A 5 'SpontaneousTransition' fd -e cpp tests | xargs rg -A 5 'TagOperation'Please ensure that the new transition model is fully exercised by existing tests or add appropriate tests if necessary.
CMakeLists.txt (1)
81-83: LGTM! Source files updated to reflect the new transition model.The changes align with the PR objectives to refactor NFA states using RAII.
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Actionable comments posted: 0
🧹 Nitpick comments (1)
src/log_surgeon/finite_automata/Nfa.hpp (1)
187-217: Consider error handling in traversal order.The
get_bfs_traversal_order()method assumes all operations will succeed. Sinceserialize()now handles failures, consider propagating potential errors from this method as well.-auto Nfa<TypedNfaState>::get_bfs_traversal_order() const -> std::vector<TypedNfaState const*> { +auto Nfa<TypedNfaState>::get_bfs_traversal_order() const -> std::optional<std::vector<TypedNfaState const*>> { // ... existing implementation ... - return visited_order; + return std::make_optional(visited_order);
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src/log_surgeon/finite_automata/Nfa.hpp(7 hunks)
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`**/*.{cpp,hpp,java,js,jsx,ts,tsx}`: - Prefer `false ==
**/*.{cpp,hpp,java,js,jsx,ts,tsx}: - Prefer false == <expression> rather than !<expression>.
src/log_surgeon/finite_automata/Nfa.hpp
**/*.{cpp,hpp,java,js,jsx,ts,tsx}: - Prefer false == <expression> rather than !<expression>.
src/log_surgeon/finite_automata/Nfa.hpp🔇 Additional comments (5)
src/log_surgeon/finite_automata/Nfa.hpp (5)
6-6: LGTM! Well-organized header inclusions.The new headers are properly organized following the standard convention: standard library headers first, followed by third-party headers, and then project-specific headers.
Also applies to: 15-15, 18-20
46-50: LGTM! Declaration matches previous review comment.The declaration of
new_accepting_statehas been added as suggested in the previous review, resolving the build error.
87-87: LGTM! Improved error handling with std::optional.The change to return
std::optional<std::string>fromserialize()allows for better error handling by explicitly indicating failure cases.
147-151: LGTM! Proper use of RAII pattern.The implementation correctly initializes the accepting state with its matching variable ID during construction, following RAII principles.
219-237: LGTM! Robust error handling in serialization.The implementation properly handles potential failures during state serialization by checking
optional_serialized_stateand propagating the failure.
Co-authored-by: Lin Zhihao <[email protected]>
Co-authored-by: Lin Zhihao <[email protected]>
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Actionable comments posted: 0
🧹 Nitpick comments (4)
src/log_surgeon/finite_automata/TagOperation.hpp (1)
39-48: Add [[fallthrough]] attribute to switch cases.Even though the cases end with return statements, it's good practice to add the [[fallthrough]] attribute to make the intention explicit and future-proof the code.
Apply this diff:
switch (m_type) { case TagOperationType::Set: + [[fallthrough]]; return fmt::format("{}{}", m_tag_id, "p"); case TagOperationType::Negate: + [[fallthrough]]; return fmt::format("{}{}", m_tag_id, "n"); default: + [[fallthrough]]; return fmt::format("{}{}", m_tag_id, "?");src/log_surgeon/finite_automata/NfaState.hpp (1)
54-69: Reserve capacity for tag_ops vector.Consider reserving capacity for the tag_ops vector to avoid potential reallocations.
Apply this diff:
auto add_spontaneous_transition( TagOperationType const op_type, std::vector<tag_id_t> const& tag_ids, NfaState const* dest_state ) -> void { std::vector<TagOperation> tag_ops; tag_ops.reserve(tag_ids.size()); + m_spontaneous_transitions.reserve(m_spontaneous_transitions.size() + 1); for (auto const tag_id : tag_ids) { tag_ops.emplace_back(tag_id, op_type); } m_spontaneous_transitions.emplace_back(std::move(tag_ops), dest_state);src/log_surgeon/finite_automata/Nfa.hpp (2)
147-151: Improve const correctness in state creation methods.Consider marking parameters as const references where appropriate to improve const correctness.
Apply this diff:
- auto new_state_from_negative_captures( + auto new_state_from_negative_captures( std::vector<Capture const*> const& captures, - TypedNfaState const* dest_state + TypedNfaState const* const dest_state ) -> TypedNfaState*; - auto new_start_and_end_states_from_positive_capture( + auto new_start_and_end_states_from_positive_capture( Capture const* capture, - TypedNfaState const* dest_state + TypedNfaState const* const dest_state ) -> std::pair<TypedNfaState*, TypedNfaState*>;Also applies to: 154-169, 172-184
187-217: Reserve capacity for serialized_states vector.Consider reserving capacity for the serialized_states vector to avoid potential reallocations.
Apply this diff:
std::vector<std::string> serialized_states; + serialized_states.reserve(traversal_order.size()); for (auto const* state : traversal_order) { auto const optional_serialized_state{state->serialize(state_ids)}; if (false == optional_serialized_state.has_value()) {Also applies to: 220-237
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CMakeLists.txt(1 hunks)src/log_surgeon/finite_automata/Nfa.hpp(7 hunks)src/log_surgeon/finite_automata/NfaSpontaneousTransition.hpp(1 hunks)src/log_surgeon/finite_automata/NfaState.hpp(6 hunks)src/log_surgeon/finite_automata/RegexAST.hpp(4 hunks)src/log_surgeon/finite_automata/TagOperation.hpp(1 hunks)tests/CMakeLists.txt(1 hunks)
🚧 Files skipped from review as they are similar to previous changes (2)
- tests/CMakeLists.txt
- CMakeLists.txt
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`**/*.{cpp,hpp,java,js,jsx,ts,tsx}`: - Prefer `false ==
**/*.{cpp,hpp,java,js,jsx,ts,tsx}: - Prefer false == <expression> rather than !<expression>.
src/log_surgeon/finite_automata/TagOperation.hppsrc/log_surgeon/finite_automata/NfaSpontaneousTransition.hppsrc/log_surgeon/finite_automata/Nfa.hppsrc/log_surgeon/finite_automata/NfaState.hppsrc/log_surgeon/finite_automata/RegexAST.hpp
**/*.{cpp,hpp,java,js,jsx,ts,tsx}: - Prefer false == <expression> rather than !<expression>.
src/log_surgeon/finite_automata/TagOperation.hppsrc/log_surgeon/finite_automata/NfaSpontaneousTransition.hppsrc/log_surgeon/finite_automata/Nfa.hppsrc/log_surgeon/finite_automata/NfaState.hppsrc/log_surgeon/finite_automata/RegexAST.hpp🧠 Learnings (4)
src/log_surgeon/finite_automata/TagOperation.hpp (1)
Learnt from: SharafMohamed
PR: y-scope/log-surgeon#50
File: src/log_surgeon/finite_automata/Tag.hpp:0-0
Timestamp: 2024-11-18T16:45:46.074Z
Learning: The class `TagPositions` was removed from `src/log_surgeon/finite_automata/Tag.hpp` as it is no longer needed.
src/log_surgeon/finite_automata/Nfa.hpp (1)
Learnt from: SharafMohamed
PR: y-scope/log-surgeon#48
File: src/log_surgeon/finite_automata/RegexNFAState.hpp:0-0
Timestamp: 2024-11-13T20:02:13.737Z
Learning: In `src/log_surgeon/finite_automata/RegexNFAState.hpp`, the constructor `RegexNFAState(std::set<Tag const*> tags, RegexNFAState const* dest_state)` has been updated to use `std::vector<Tag const*> tags` instead of `std::set`.
src/log_surgeon/finite_automata/NfaState.hpp (1)
Learnt from: SharafMohamed
PR: y-scope/log-surgeon#48
File: src/log_surgeon/finite_automata/RegexNFAState.hpp:0-0
Timestamp: 2024-11-13T20:02:13.737Z
Learning: In `src/log_surgeon/finite_automata/RegexNFAState.hpp`, the constructor `RegexNFAState(std::set<Tag const*> tags, RegexNFAState const* dest_state)` has been updated to use `std::vector<Tag const*> tags` instead of `std::set`.
src/log_surgeon/finite_automata/RegexAST.hpp (2)
Learnt from: SharafMohamed
PR: y-scope/log-surgeon#48
File: src/log_surgeon/finite_automata/RegexNFAState.hpp:0-0
Timestamp: 2024-11-13T20:02:13.737Z
Learning: In `src/log_surgeon/finite_automata/RegexNFAState.hpp`, the constructor `RegexNFAState(std::set<Tag const*> tags, RegexNFAState const* dest_state)` has been updated to use `std::vector<Tag const*> tags` instead of `std::set`.
Learnt from: SharafMohamed
PR: y-scope/log-surgeon#48
File: src/log_surgeon/finite_automata/RegexAST.hpp:700-700
Timestamp: 2024-11-13T22:38:19.472Z
Learning: In `RegexASTCapture`, `m_tag` must always be non-null.
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🔇 Additional comments (8)
src/log_surgeon/finite_automata/RegexAST.hpp (3)
24-24: LGTM!The inclusion of
TagOperation.hppaligns with the refactoring to use RAII for NFA state creation.
864-866: LGTM! Improved efficiency and aligned with refactoring.The changes improve efficiency by using pre-increment and align with the transition to spontaneous transitions.
911-943: LGTM! Well-documented transition to RAII-based state creation.The changes effectively implement RAII for state creation while maintaining clear documentation of the NFA structure.
src/log_surgeon/finite_automata/TagOperation.hpp (2)
13-16: LGTM! Well-defined enum class.The enum class is well-defined with clear operation types and appropriate underlying type.
18-35: LGTM! Well-structured class with efficient comparison operators.The class is well-designed with appropriate member variables and efficient comparison operators using std::tie.
src/log_surgeon/finite_automata/NfaSpontaneousTransition.hpp (1)
23-62: LGTM! Well-designed template class with efficient operations.The class is well-documented and efficiently implemented:
- Constructor uses std::move for vector transfer
- Serialization uses std::ranges::views::transform for efficient transformation
- Boolean expressions follow coding guidelines
src/log_surgeon/finite_automata/NfaState.hpp (2)
40-52: LGTM! Well-structured constructors following RAII principles.The changes effectively implement the transition from tagged to spontaneous transitions while maintaining RAII principles.
Also applies to: 117-117
172-188: LGTM! Well-implemented methods following coding guidelines.The epsilon closure and serialization methods are well-implemented with proper error handling and boolean expression formatting.
Also applies to: 190-222
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🧹 Nitpick comments (1)
src/log_surgeon/finite_automata/Nfa.hpp (1)
114-115: Consider addressing the TODO comment about capture group naming.The current limitation of enforcing unique naming across capture groups could be improved to support more use cases.
Would you like me to help design a solution that allows for non-unique capture group names while maintaining proper functionality?
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src/log_surgeon/LexicalRule.hpp(1 hunks)src/log_surgeon/finite_automata/Nfa.hpp(2 hunks)src/log_surgeon/finite_automata/NfaState.hpp(1 hunks)
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- src/log_surgeon/LexicalRule.hpp
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src/log_surgeon/finite_automata/Nfa.hppsrc/log_surgeon/finite_automata/NfaState.hpp
**/*.{cpp,hpp,java,js,jsx,ts,tsx}: - Prefer false == <expression> rather than !<expression>.
src/log_surgeon/finite_automata/Nfa.hppsrc/log_surgeon/finite_automata/NfaState.hpp🧠 Learnings (1)
src/log_surgeon/finite_automata/NfaState.hpp (1)
Learnt from: SharafMohamed
PR: y-scope/log-surgeon#48
File: src/log_surgeon/finite_automata/RegexNFAState.hpp:0-0
Timestamp: 2024-11-13T20:02:13.737Z
Learning: In `src/log_surgeon/finite_automata/RegexNFAState.hpp`, the constructor `RegexNFAState(std::set<Tag const*> tags, RegexNFAState const* dest_state)` has been updated to use `std::vector<Tag const*> tags` instead of `std::set`.
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🔇 Additional comments (5)
src/log_surgeon/finite_automata/NfaState.hpp (3)
40-44: LGTM! Well-designed constructors using RAII.The constructors properly initialize state properties at construction time, following RAII principles. The explicit keyword and initialization list are used appropriately.
177-178: LGTM! Follows coding guidelines.The condition
false == stack.empty()follows the preferred style guideline, and the DFS traversal implementation is correct.
209-210: LGTM! Good error handling.The method properly uses std::optional for error handling and follows the coding guidelines for condition style.
src/log_surgeon/finite_automata/Nfa.hpp (2)
46-50: LGTM! Well-implemented accepting state creation.The method properly leverages RAII through the constructor and is well-documented. The [[nodiscard]] attribute ensures the caller doesn't accidentally ignore the returned state.
Also applies to: 146-151
206-206:Details
❓ Verification inconclusive
Address UTF-8 handling in traversal.
The TODO indicates that UTF-8 case handling is missing in the traversal. This could affect functionality when processing non-ASCII text.
🏁 Script executed:
#!/bin/bash # Check if there are any UTF-8 specific test cases rg -l "utf-?8" test/Length of output: 68
Attention: Verify and address UTF-8 handling in traversal
Line 206 of
src/log_surgeon/finite_automata/Nfa.hppcontains a TODO for handling the UTF-8 case. Our initial search usingrg -l "utf-?8"in thetest/directory did not return any results, which suggests that there may not be dedicated tests verifying UTF-8 functionality. Please manually verify that non-ASCII text is processed correctly once added, and consider adding test cases to ensure robust UTF-8 support when this feature is implemented.
Co-authored-by: davidlion <[email protected]>
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Actionable comments posted: 0
🧹 Nitpick comments (1)
src/log_surgeon/finite_automata/Nfa.hpp (1)
46-50: Enhance method documentation for clarity.Consider expanding the documentation to clarify:
- What an "accepting state" represents in the context of an NFA
- The ownership semantics of the returned pointer (e.g., whether the NFA retains ownership)
/* + * Creates a new accepting state in the NFA. An accepting state represents a final + * state that indicates successful pattern recognition. * @param matching_variable_id The id for the variable matched by this state. - * @return A pointer to the newly created accepting NFA state. + * @return A pointer to the newly created accepting NFA state. The NFA retains + * ownership of the state through its internal vector of unique_ptrs. */
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src/log_surgeon/finite_automata/Nfa.hpp(2 hunks)
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`**/*.{cpp,hpp,java,js,jsx,tpp,ts,tsx}`: - Prefer `false == ...
**/*.{cpp,hpp,java,js,jsx,tpp,ts,tsx}: - Preferfalse == <expression>rather than!<expression>.
src/log_surgeon/finite_automata/Nfa.hpp
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🔇 Additional comments (3)
src/log_surgeon/finite_automata/Nfa.hpp (3)
146-151: LGTM! Implementation follows RAII principles.The implementation correctly creates a new accepting state using RAII, maintaining consistency with the existing state creation pattern.
58-61: LGTM! Method names are more descriptive.The renamed methods better convey their purpose and relationship to capture operations.
Also applies to: 72-75
219-237: LGTM! Improved error handling with std::optional.The implementation now properly handles and propagates serialization failures, making error cases more explicit and safer to handle.
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Summary by CodeRabbit
New Features
Refactor