docs(collections): add comments for funcs #22214
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🧹 Outside diff range and nitpick comments (17)
collections/triple.go (8)
Line range hint
88-106: Revise function comments to follow Go conventionsThe comment for
EncodeJSONshould begin with the function name and be a complete sentence. According to Go conventions, it should be:// EncodeJSON converts triple keys to JSON.Please update the comment to match this style.
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88-106: Handle nil pointers to prevent potential panicsIn the
EncodeJSONmethod, dereferencing*value.k1,*value.k2, and*value.k3without checking if they arenilcan lead to panics if any of the keys arenil. To prevent this, add nil checks before dereferencing:func (t tripleKeyCodec[K1, K2, K3]) EncodeJSON(value Triple[K1, K2, K3]) ([]byte, error) { var json1, json2, json3 []byte var err error if value.k1 != nil { json1, err = t.keyCodec1.EncodeJSON(*value.k1) if err != nil { return nil, err } } else { json1 = []byte("null") } if value.k2 != nil { json2, err = t.keyCodec2.EncodeJSON(*value.k2) if err != nil { return nil, err } } else { json2 = []byte("null") } if value.k3 != nil { json3, err = t.keyCodec3.EncodeJSON(*value.k3) if err != nil { return nil, err } } else { json3 = []byte("null") } return json.Marshal(jsonTripleKey{json1, json2, json3}) }
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108-132: Revise function comments to follow Go conventionsThe comment for
DecodeJSONshould begin with the function name and be a complete sentence. It should be:// DecodeJSON converts JSON to triple keys.Please update the comment accordingly.
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108-132: Validate JSON array length to prevent index out of range errorsIn
DecodeJSON, after unmarshalling, ensure that the JSON array has exactly three elements to prevent potential index out of range errors:if len(jsonKey) != 3 { return Triple[K1, K2, K3]{}, fmt.Errorf("expected JSON array of length 3") }
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108-132: Handle null values during JSON decoding to support optional keysIf the JSON array contains
nullvalues, decoding into keys without handlingnullcan cause errors. Modify the decoding to handlenullvalues:var key1 K1 if string(jsonKey[0]) != "null" { key1, err = t.keyCodec1.DecodeJSON(jsonKey[0]) if err != nil { return Triple[K1, K2, K3]{}, err } } var key2 K2 if string(jsonKey[1]) != "null" { key2, err = t.keyCodec2.DecodeJSON(jsonKey[1]) if err != nil { return Triple[K1, K2, K3]{}, err } } var key3 K3 if string(jsonKey[2]) != "null" { key3, err = t.keyCodec3.DecodeJSON(jsonKey[2]) if err != nil { return Triple[K1, K2, K3]{}, err } } return Triple[K1, K2, K3]{&key1, &key2, &key3}, nil
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134-170: Revise function comments to follow Go conventionsThe comment for
Stringifyshould begin with the function name and be a complete sentence:// Stringify converts triple keys to a string.Please adjust the comment to follow this format.
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134-170: Simplify string concatenation usingfmt.Sprintffor readabilityRefactor the
Stringifymethod to usefmt.Sprintf, enhancing readability and maintainability:func (t tripleKeyCodec[K1, K2, K3]) Stringify(key Triple[K1, K2, K3]) string { k1Str := "<nil>" if key.k1 != nil { k1Str = fmt.Sprintf(`"%s"`, t.keyCodec1.Stringify(*key.k1)) } k2Str := "<nil>" if key.k2 != nil { k2Str = fmt.Sprintf(`"%s"`, t.keyCodec2.Stringify(*key.k2)) } k3Str := "<nil>" if key.k3 != nil { k3Str = fmt.Sprintf(`"%s"`, t.keyCodec3.Stringify(*key.k3)) } return fmt.Sprintf("(%s, %s, %s)", k1Str, k2Str, k3Str) }
Line range hint
88-106: Wrap errors with additional context per style guidelinesWhen returning errors, wrap them with context to improve debuggability, following the Uber Go Style Guide:
if err != nil { return nil, fmt.Errorf("failed to encode key1: %w", err) }Apply similar error wrapping in other error handling blocks.
Also applies to: 108-132, 134-170
collections/quad.go (9)
Line range hint
110-133: Potential nil pointer dereference inEncodeJSONmethodIn the
EncodeJSONmethod, the fieldsvalue.k1,value.k2,value.k3, andvalue.k4are dereferenced without checking if they arenil. Since these fields are pointers, if any of them arenil, this could lead to a runtime panic. Consider adding nil checks before dereferencing to ensure robustness.Apply this diff to add nil checks:
func (t quadKeyCodec[K1, K2, K3, K4]) EncodeJSON(value Quad[K1, K2, K3, K4]) ([]byte, error) { + if value.k1 == nil || value.k2 == nil || value.k3 == nil || value.k4 == nil { + return nil, fmt.Errorf("one of the Quad keys is nil") + } json1, err := t.keyCodec1.EncodeJSON(*value.k1) if err != nil { return nil, err } // ... rest of the code ... }
110-110: Adjust function comment to follow Go conventionsThe comment for
EncodeJSONshould start with the function name and be a complete sentence, as per the Uber Go Style Guide. Consider rephrasing it to:// EncodeJSON encodes a Quad into JSON format.
135-135: Adjust function comment to follow Go conventionsThe comment for
DecodeJSONshould start with the function name and be a full sentence. Consider rephrasing it to:// DecodeJSON decodes JSON data into a Quad.
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135-164: Potential issue with nil pointers inDecodeJSONmethodIn the
DecodeJSONmethod, although it's unlikely, there is a possibility thatjsonKeymay not contain all four elements due to malformed input. AccessingjsonKey[0]tojsonKey[3]without bounds checking could lead to an index out of range panic. Consider adding a check to ensure thatjsonKeyhas exactly four elements before proceeding.Apply this diff to add a length check:
func (t quadKeyCodec[K1, K2, K3, K4]) DecodeJSON(b []byte) (Quad[K1, K2, K3, K4], error) { var jsonKey jsonQuadKey err := json.Unmarshal(b, &jsonKey) if err != nil { return Quad[K1, K2, K3, K4]{}, err } + if len(jsonKey) != 4 { + return Quad[K1, K2, K3, K4]{}, fmt.Errorf("expected 4 elements in JSON array, got %d", len(jsonKey)) + } key1, err := t.keyCodec1.DecodeJSON(jsonKey[0]) // ... rest of the code ... }
166-166: Adjust function comment to follow Go conventionsThe comment for
Stringifyshould start with the function name and be a complete sentence. Consider rephrasing it to:// Stringify converts a Quad into its string representation.
Line range hint
213-246: Consider refactoring to reduce code duplication inEncodemethodThe
Encodemethod has repetitive code blocks for each key. To improve maintainability and adhere to the DRY (Don't Repeat Yourself) principle, consider refactoring the code by extracting the repeated logic into a helper function or by using a loop over the keys.Here’s an example using a helper function:
func (t quadKeyCodec[K1, K2, K3, K4]) encodeKey(buffer []byte, key interface{}, codec interface{}, isTerminal bool) (int, error) { // Implement encoding logic based on isTerminal flag } func (t quadKeyCodec[K1, K2, K3, K4]) Encode(buffer []byte, key Quad[K1, K2, K3, K4]) (int, error) { writtenTotal := 0 // Call encodeKey for each key.k1 to key.k4 }
Line range hint
247-278: Ensure consistent error handling inDecodemethodIn the
Decodemethod, errors are immediately returned with minimal context. To provide better error messages, consider wrapping the errors with additional context usingfmt.Errorforerrors.Wrap.Apply this diff to enhance error messages:
if err != nil { - return 0, Quad[K1, K2, K3, K4]{}, err + return 0, Quad[K1, K2, K3, K4]{}, fmt.Errorf("failed to decode key1: %w", err) }
Line range hint
279-312: Reduce duplication betweenEncodeandEncodeNonTerminalmethodsThe
EncodeNonTerminalmethod shares similar logic withEncode. Refactoring to share common code will enhance readability and maintainability.Consider combining the methods or extracting shared logic, similar to the suggestion for the
Encodemethod.
Line range hint
213-246: Adhere to Uber Go Style Guide on error handling and return valuesPer the Uber Go Style Guide, when returning errors, it's recommended to wrap them with context. Additionally, ensure that the ordering of return values is consistent.
Also applies to: 279-312
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📒 Files selected for processing (2)
- collections/quad.go (5 hunks)
- collections/triple.go (3 hunks)
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📓 Path-based instructions (2)
collections/quad.go (1)
Pattern
**/*.go: Review the Golang code for conformity with the Uber Golang style guide, highlighting any deviations.collections/triple.go (1)
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**/*.go: Review the Golang code for conformity with the Uber Golang style guide, highlighting any deviations.
julienrbrt
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Summary by CodeRabbit
QuadandTripleinstances to and from JSON format.QuadandTripleinstances.These improvements facilitate better data handling and representation for users interacting with
QuadandTripledata structures.