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rules_go improvement to externalize the nogo fix
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,85 +1,88 @@ | ||
| package main | ||
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| import ( | ||
| "fmt" | ||
| "go/token" | ||
| "strings" | ||
| "os" | ||
| "path/filepath" | ||
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| "golang.org/x/tools/go/analysis" | ||
| ) | ||
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| // DiagnosticEntry represents a diagnostic entry with the corresponding analyzer. | ||
| type DiagnosticEntry struct { | ||
| analysis.Diagnostic | ||
| *analysis.Analyzer | ||
| } | ||
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| // An Edit describes the replacement of a portion of a text file. | ||
| type Edit struct { | ||
| New string `json:"new"` // the replacement | ||
| Start int `json:"start"` // starting byte offset of the region to replace | ||
| End int `json:"end"` // ending byte offset of the region to replace | ||
| } | ||
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| // Change represents a set of edits to be applied to a set of files. | ||
| type Change struct { | ||
| AnalysisName string `json:"analysis_name"` | ||
| FileToEdits map[string][]Edit `json:"file_to_edits"` | ||
| AnalyzerToFileToEdits map[string]map[string][]Edit `json:"analyzer_file_to_edits"` | ||
| } | ||
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| // NewChange creates a new Change object. | ||
| func NewChange() *Change { | ||
| return &Change{ | ||
| FileToEdits: make(map[string][]Edit), | ||
| AnalyzerToFileToEdits: make(map[string]map[string][]Edit), | ||
| } | ||
| } | ||
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| // SetAnalysisName sets the name of the analysis that produced the change. | ||
| func (c *Change) SetAnalysisName(name string) { | ||
| c.AnalysisName = name | ||
| } | ||
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| // AddEdit adds an edit to the change. | ||
| func (c *Change) AddEdit(file string, edit Edit) { | ||
| c.FileToEdits[file] = append(c.FileToEdits[file], edit) | ||
| } | ||
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| // BuildFromDiagnostics builds a Change from a set of diagnostics. | ||
| // NewChangeFromDiagnostics builds a Change from a set of diagnostics. | ||
| // Unlike Diagnostic, Change is independent of the FileSet given it uses perf-file offsets instead of token.Pos. | ||
| // This allows Change to be used in contexts where the FileSet is not available, e.g., it remains applicable after it is saved to disk and loaded back. | ||
| // See https://github.com/golang/tools/blob/master/go/analysis/diagnostic.go for details. | ||
| func (c *Change) BuildFromDiagnostics(diagnostics []analysis.Diagnostic, fileSet *token.FileSet) error { | ||
| for _, diag := range diagnostics { | ||
| for _, sf := range diag.SuggestedFixes { | ||
| func NewChangeFromDiagnostics(entries []DiagnosticEntry, fileSet *token.FileSet) (*Change, error) { | ||
| c := NewChange() | ||
| cwd, err := os.Getwd() // workspace root | ||
| if err != nil { | ||
| return c, fmt.Errorf("Error getting current working directory: (%v)", err) | ||
| } | ||
| for _, entry := range entries { | ||
| analyzer := entry.Analyzer.Name | ||
| for _, sf := range entry.Diagnostic.SuggestedFixes { | ||
| for _, edit := range sf.TextEdits { | ||
| file := fileSet.File(edit.Pos) | ||
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| if file == nil { | ||
| return fmt.Errorf("invalid fix: missing file info for pos (%v)", edit.Pos) | ||
| return c, fmt.Errorf("invalid fix: missing file info for pos (%v)", edit.Pos) | ||
| } | ||
| if edit.Pos > edit.End { | ||
| return fmt.Errorf("invalid fix: pos (%v) > end (%v)", edit.Pos, edit.End) | ||
| return c, fmt.Errorf("invalid fix: pos (%v) > end (%v)", edit.Pos, edit.End) | ||
| } | ||
| if eof := token.Pos(file.Base() + file.Size()); edit.End > eof { | ||
| return fmt.Errorf("invalid fix: end (%v) past end of file (%v)", edit.End, eof) | ||
| return c, fmt.Errorf("invalid fix: end (%v) past end of file (%v)", edit.End, eof) | ||
| } | ||
| edit := Edit{Start: file.Offset(edit.Pos), End: file.Offset(edit.End), New: string(edit.NewText)} | ||
| fileRelativePath := file.Name() | ||
| c.AddEdit(fileRelativePath, edit) | ||
| fileRelativePath, err := filepath.Rel(cwd, file.Name()) | ||
| if err != nil { | ||
| fileRelativePath = file.Name() // fallback logic | ||
| } | ||
| c.AddEdit(analyzer, fileRelativePath, edit) | ||
| } | ||
| } | ||
| } | ||
| return nil | ||
| return c, nil | ||
| } | ||
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| // MergeChanges merges multiple changes into a single change. | ||
| func MergeChanges(changes []Change) Change { | ||
| mergedChange := NewChange() // Create a new Change object for the result | ||
| analysisNames := []string{} // no deduplication needed | ||
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| for _, change := range changes { | ||
| if change.AnalysisName != "" { | ||
| analysisNames = append(analysisNames, change.AnalysisName) | ||
| } | ||
| for file, edits := range change.FileToEdits { | ||
| // If the file already exists in the merged change, append the edits | ||
| if existingEdits, found := mergedChange.FileToEdits[file]; found { | ||
| // checking the overlapping of edits happens in edit.go during the ApplyEdits function. | ||
| // so we don't need to check it here. | ||
| mergedChange.FileToEdits[file] = append(existingEdits, edits...) | ||
| } else { | ||
| // Otherwise, just set the file and edits | ||
| mergedChange.FileToEdits[file] = edits | ||
| } | ||
| } | ||
| // AddEdit adds an edit to the change. | ||
| func (c *Change) AddEdit(analyzer string, file string, edit Edit) { | ||
| // Check if the analyzer exists in the map | ||
| if _, ok := c.AnalyzerToFileToEdits[analyzer]; !ok { | ||
| // Initialize the map for the analyzer if it doesn't exist | ||
| c.AnalyzerToFileToEdits[analyzer] = make(map[string][]Edit) | ||
| } | ||
| mergedChange.AnalysisName = strings.Join(analysisNames, ",") | ||
| return *mergedChange | ||
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| // Append the edit to the list of edits for the specific file under the analyzer | ||
| c.AnalyzerToFileToEdits[analyzer][file] = append(c.AnalyzerToFileToEdits[analyzer][file], edit) | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,39 @@ | ||
| package main | ||
|
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| import ( | ||
| "os" | ||
| "reflect" | ||
| "testing" | ||
| ) | ||
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| func TestSaveLoad(t *testing.T) { | ||
| // Create a temporary file | ||
| file, err := os.CreateTemp("", "tmp_file") | ||
| if err != nil { | ||
| t.Fatal(err) | ||
| } | ||
| defer os.Remove(file.Name()) | ||
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| // Initialize a Change struct with some edits and analyzers | ||
| change := *NewChange() | ||
| change.AddEdit("AnalyzerA", "file1.txt", Edit{New: "replacement1", Start: 0, End: 5}) | ||
| change.AddEdit("AnalyzerA", "file1.txt", Edit{New: "replacement2", Start: 10, End: 15}) | ||
| change.AddEdit("AnalyzerB", "file2.txt", Edit{New: "new text", Start: 20, End: 25}) | ||
|
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| // Test saving to file | ||
| err = SaveToFile(file.Name(), change) | ||
| if err != nil { | ||
| t.Fatalf("Failed to save Change struct to file: %v", err) | ||
| } | ||
|
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| // Test loading from file | ||
| loadedChange, err := LoadFromFile(file.Name()) | ||
| if err != nil { | ||
| t.Fatalf("Failed to load Change struct from file: %v", err) | ||
| } | ||
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| // Compare original and loaded Change structs | ||
| if !reflect.DeepEqual(change, loadedChange) { | ||
| t.Fatalf("Loaded Change struct does not match original.\nOriginal: %+v\nLoaded: %+v", change, loadedChange) | ||
| } | ||
| } |
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